Borehole transducer systems and appropriate processes

FIELD: instrumentation.

SUBSTANCE: set of inventions relates to sampling of formations and to analysis at formation estimation and testing. Module of transducers for metering unit is configured for in-well operation. Module of transducers comprises set of transducers for measurement of the formation selected parameters and control system for selective and independent operation of every said transducer of said set. Every said transducer is configured or designed as a discrete transducer element for individual communication and control. Every said transducer can incorporate electronics module to couple electronic components with control system.

EFFECT: perfected in-well transducer systems, hence, enhanced performances.

26 cl, 6 dwg

 

Related applications

This application claims the priority of provisional application No. 61/168218 on U.S. patent, filed April 10, 2009, the entire contents of which is incorporated into the present application by reference.

The level of technology

The present invention relates to the field sampling of geological strata and analysis for the evaluation and testing of seams in cases of trial operation and development of hydrocarbon production wells, such as oil or gas well. More specifically, the present disclosure relates to methods and systems using a well installation having a set of sensors, which are configured or designed as a discrete independent sensors with customized functionality, control and communications. While the present disclosure is provided architecture downhole sensor system for downhole logging devices using the configuration plug-and-play, which is configured or designed for applications in the hole in the oil fields.

Downhole sampling and analysis are an important and effective research method used to establish the characteristics and basic properties of geological formations with hydrocarbon deposits. While typical exploration and development places the birth of the oil includes a downhole sampling and analysis to determine petrophysical, mineralogical properties of hydrocarbon reservoirs, as well as properties of fluids. This characterization combined with an accurate assessment of the economic viability of the hydrocarbon reservoir.

Usually when you study in a well formation fluids reveal a complex mixture of fluids, such as oil, gas and water. Downhole fluids, which is also applicable to formation fluids have characteristics, including pressure, temperature, volume, along with other properties of the fluids. To evaluate subsurface formations surrounding the borehole, it is often desirable to determine the characteristics of the fluids, including the result of the composition analysis, fluid properties and phase behavior. Lowered on wireline devices for testing of formations are disclosed, for example, in U.S. patent No. 3780575 and 3859851, and examples of such layers are formation tester (RFT) and modular dynamic formation tester (MDT) from Schlumberger.

Recent developments in the field of downhole sampling and analysis include the methods of isolation and determination of downhole characteristics of the formation fluids in the wellbore or drilling the well. This modular dynamic formation tester may include one or more analysis modules fluids, such as composition analyzer fluids (CFA) and the parser p is movable partition fluids (LFA) from Schlumberger, for analysis, for example, borehole fluids, selected by the device at the time when the fluids are still in the well. In such downhole modules sampling and analysis of reservoir fluids, samples of which have skvazhina be selected and analyzed, flow past the sensor module associated with the module sampling and analysis. Such downhole modules sampling and analysis usually also include other types of sensors to register the relevant and important data related to the geological formations.

In a typical transducer modules of the type indicated above, the sensors are an integral part of the module, and the downhole tool is configured or adapted to work with a fixed and specific configuration of the sensors. In the case of adding or removing the sensor element required reflow and change the device configuration, including functional capabilities in terms of management and communication related to the device. Increasing the size of the set of sensors means that the overall size of the sensor will increase due to seat additional sensor elements. Similarly, for the repair of one or more sensor elements have the entire unit to ship or transport to perform the necessary work. In addition, a field test of new constructivization perform by creating a new prototype of the device, includes new sensors, which further complicates the development and testing of new sensors.

Since the construction and improvement of new sensors making progress, and opportunities for downhole analysis of the increase, there remains a need for a flexible and configurable architecture downhole tool, which provides easy attachment and removal of the sensors. However due to the availability of downhole sensors that are discrete elements having independent functionality, control and communications should be excluded some of the limitations that exist in a typical fixed system architecture sensors for downhole analysis.

According to this it should be clear that there is a need to improve conventional downhole systems of sensors to make the system more flexible and adaptable for downhole applications. The applicant of this application has found that the existing well systems of the type indicated above can be improved through the implementation of new mechanical, electrical and software infrastructure that facilitates the creation of discrete modular sensor elements based architecture "plug and play".

The limitation of the conventional systems mentioned above, the e is assumed to be exhaustive, and among the many that can reduce the effectiveness of already well known systems. However, the above should be sufficient to demonstrate that the downhole sensor system that existed in the past, it is advisable to improve.

Summary of the disclosure

Based on the results of consideration of the level of technology and other factors, which are known in the field of downhole systems sampling and analysis, the present disclosure proposes an improved system architecture sensors for methods and systems for determining downhole characteristics of the geological formations. In particular, some of the options for implementing the present disclosure provides methods and systems that use the new architecture of the set of sensors with capability plug-and-play and having discrete independent sensor elements with the corresponding functional connectivity and control.

In some embodiments, implementation of the present disclosure downhole device or module configured or adapted to maintain the functionality of the sensors plug-and-play. When this discrete sensor elements is formed with a standardized power supply, communication interface and the mechanical is the second interface; a standardized interface with the fluid in the pipe downhole tool, i.e. the standardized configuration of the pipeline and sealing, for analyzing the downhole fluid; having the capability of independent communication, including the ability to send and receive commands/queries the controller; functionality independent management and configuration, including the possibility of establishing communication between the controller and the sensor (sensors) and the configuration of one relative to another using the appropriate sequence of commands, including configuration changes to the controller and sensor (sensors) for adaptation to the use of well-defined elements of the sensor. The sensor elements are configured or adapted to mate with the downhole device, so that the modification of the hardware is not necessary, that is, the physical installation of the sensor elements is standardized.

In other embodiments, implementation of the present disclosure architecture "plug and play"disclosed in this application provides the ability to use the same type of sensor (sensors) devices of different types without modification of the devices, so it is possible to uniform data recording devices of various systems.

In accordance with one aspectaleatoire disclosure proposed well installation to determine characteristics of the fluid, configured for downhole operation, within a borehole. The installation includes an analysis module fluids, having a group of sensors, each sensor of the set of sensors configured or designed to measure specific characteristics of the surrounding formation. The sensors are placed as discrete elements and associated with the pipeline module sampling fluids and analysis. Each sensor in combination with the control system and telemetry units has the possibility of individualized and independent control and communication.

In some aspects of the present disclosure proposed borehole system for determining characteristics of fluids, configured for operation downhole, within a borehole. The system includes a module for sampling fluids and analysis of the body; the pipeline in the body fluid extracted from the formation to flow through the downhole module sampling fluids and analysis, within a borehole, the pipe flow has a first end for entry fluid and a second end for exit of fluid from the module sampling fluids and analysis; a group of sensors with multiple sensors placed in the message by the fluid pipe, for measuring selected parameters of the reservoir; and a control system configured or designed to izbirat the school and independent of each sensor from a set of sensors. Each sensor of the set of sensors includes a selectable item sensor configured or designed for individual independent communication and control.

In some embodiments, implementation of the present disclosure, each sensor of the set of sensors may be associated with the electronics module, which provides a standardized connectivity electronics control system. In other implementations in this application the same electronics module can be associated with each sensor of the sensor set.

In other embodiments, the implementation in this application each sensor from a set of sensors placed in the corresponding port on the sensor so that each sensor is in communication with the fluid pipe flow. In some aspects, each sensor of the array of sensors may be accessible from the outside of the casing. In other aspects of the present disclosure, each sensor of the array of sensors may be interchangeable or replaceable.

In some embodiments, implementation of the present disclosure, each sensor of the set of sensors located within the enclosure. In further implementations, each sensor of the set of sensors connected to at least one other sensor of the set of sensors. Aspects disclosed in this application, the module sampling fluids and analysis includes the sensor unit and the centre of the in ports of the sensor in the sensor unit, configured or designed to hold a variety of sensors from a group of sensors. In other aspects, disclosed in this application, the ports of the sensor and each sensor of the array of sensors may be appropriate standardized forms to be used interchangeably. In some implementations of the present disclosure, each sensor of the array of sensors is located on the pipeline. Each sensor of the array of sensors may be located inside the housing and can include a section of the pipe and the electrical connector. Multiple sensors can be positioned linearly so that the section of the pipe and the electrical connector of each sensor were connected with the corresponding section of the pipe and the electrical connector is at least one other sensor of the set of sensors. Each sensor of the array of sensors may be tubular in shape and multiple sensors may have the same outer diameter.

In some embodiments, the implementation disclosed in this application, the control system may be configured or designed to communicate with the ground system for control and communication each sensor from a set of sensors. In further implementations, the management system may be configured or designed to provide ground systems location and name of kadugodi from a set of sensors on the basis of, for example, architecture, plug-and-play. The control system may be configured or designed for telemetry data to the ground system for control and configuration of each sensor from a set of sensors and/or control system may be configured or designed to registration of sensor data from each sensor of the array of sensors. In some implementations, disclosed in this application, the control system may include many control systems sensor, each control system sensor made in one piece with the respective sensor from a variety of sensors.

Proposed is a device for sampling and characterization of formation fluids, buried in oil and gas reservoir. The device includes an analysis module fluids, with the pipeline fluid extracted from the formation to flow through the analysis module fluids, the tubing has a first end for entry fluid and a second end for exit of fluids from the analysis module of the fluid; and a set of sensors with multiple sensors placed in the message by the fluid pipe, for measuring selected parameters of the formation, with each sensor of the set of sensors includes a selectable item sensor configured or designed for individual and n is dependent communication and control.

In other aspects of the present disclosure the proposed system, which is configured for downhole operation, in one or more boreholes. The system includes a first device having a first slot of a sensor for receiving the sensor, and the second device having a second slot sensor for receiving the sensor. The first and second slots of the sensors have the same configuration, and the first and second devices are devices of different types.

A method for determining downhole characteristics of fluids involving downhole tool. The method includes deploying a downhole tool for sampling and characterization of formation fluids, skvazhina located in the oil reservoir. The device includes an analysis module fluids, with the pipeline fluid extracted from the formation to flow through the analysis module fluids, the tubing has a first end for entry fluid and a second end for exit of fluids from the analysis module fluids. The method also includes creating a set of sensors with multiple sensors in a message to the fluid pipe, for measuring the selected parameters; and configuring the control system for selective and independent operation of each sensor from a set of sensors, with each sensor set sensor which s contains a discrete sensor element, configured or designed for individual and independent communication and control. In some aspects, disclosed in this application, the method may include the input configuration of the device in the control module and communication; input sensor configuration in the control module and communication; system configuration registration data based on the sensor configuration; initiating communication device; checking the configurations of the device and sensors; and the beginning of the reception data on the basis of the test configurations of the device and sensors.

Additional advantages and new features will be set forth in the description which follows, or may be learned by experts in the art when reading the information in this application or the application in practice of the principles described in this application. Some of the benefits described in this application can be obtained by using the tools listed in the attached claims.

Drawings

The accompanying drawings illustrate some embodiments of and they are part of the description. In conjunction with the following description, the drawings demonstrate and explain some of the principles of the present invention. In the drawings:

figure 1 is a section view schematic representation of an example process conditions for methods and systems of the present disclosure;

IG - schematic representation of one possible configuration for a downhole tool according to the present disclosure;

figure 3 depicts one possible configuration, designed for downhole analysis of formation fluids according to the present disclosure;

figa and 4B is schematically illustrate other possible ways of executing the module downhole tool according to the present disclosure;

fig.5F-5D depict various configurations of interfaces for discrete sensor elements according to the present disclosure; and

6 is a block diagram of one possible method for downhole analysis of fluids using a discrete sensor elements according to the present disclosure.

Throughout the drawings, identical positions and legend indicated similar but not necessarily identical, elements. Despite the fact that allowed various modifications and alternative forms principles described in this application, specific embodiments of shown for illustration in the drawings and will be described in detail in this application. However, it should be clear that the invention is not intended limited to a particular open forms. More precisely, the invention includes all modifications, equivalents and alternatives falling within scope of the attached claims.

Detailed description

And lustrative embodiments of aspects of the invention are described below. Of course, it should be clear that the development of any such actual implementation must be received numerous implementation-specific decisions designed to achieve the developer's specific goals, such as related to compliance with the restrictions associated with the system and with the business activity, which vary from one implementation to another. In addition, it should be clear that such development can be complex and require time-consuming, but nevertheless should be a common procedure performed by specialists in the art having the benefit of this disclosure.

Referred to throughout the description of "one implementation", "option exercise", "some embodiments of", "one aspect" "aspect" or "some aspects" means that a particular feature, structure, method, or characteristic described in relation to the implementation or aspect is included in at least one alternative implementation of the present invention. Therefore, appearing in various places throughout the description of the phrase "in one embodiment"or "in an embodiment"or "some embodiments, the implementation of" do not necessarily all refer to the same implementation. In addition, a specific who's signs, structures, or characteristics may be combined in any suitable manner in one or more implementations. The words "including" and "having" have the same meaning as the word "contains".

In addition, aspects of the invention include all the features of one of the disclosed variant implementation. In the claims, the following detailed description and expressly incorporated into this detailed description, with each claim is a separate implementation of this invention.

The disclosure in this application relates to the concept of different methods that can be used to simplify and improve the downhole analysis of geological formations. In this disclosure it is assumed the applicability of the disclosed methods for measuring systems, such as viscosity sensors, density sensors, flow meters, sensors, chemical substances, such as H2S, CO2CH4and others, fluorescence detectors, the system for measuring gas factor, spectral sensors, and other similar measurement setup used for the monitoring and characterization of the underground reservoir.

Used throughout the description and in the claims, the term "borehole" means underground conditions, the particular wellbore. The term "downhole" is widely used to refer to any device used in underground conditions, including, but without limiting them, the logging device, a device for imaging, acoustic instrument, the instrument constant monitoring and the combined device.

The various ways disclosed in this application can be used to simplify and improve the registration and analysis of data in the downhole devices and systems. This proposed downhole devices and systems, which are used in sets of measuring devices, which are configured or designed for easy attachment and separation in the downhole devices or modules with sensors that are deployed to measure data relating to the environment and parameters of the downhole device within the borehole. Instruments and measuring system disclosed in this application, can effectively measure and store characteristics relating to components of downhole tools, as well as the parameters of layers at elevated temperatures and pressures. Chemical substances and chemical properties of interest in the exploration and development of oil fields, can also be determined and the determination results stored measuring systems set forth in the present disclosure. ISM is satisfactory system of this application can be included in the instrumental system, such as lowered on the cable logging devices, devices for measurement while drilling and logging while drilling, continuous monitoring system, drill bits, heavy-weight drill pipe, probes, among others. In the context of this disclosure using any one term of "wireline", "rope", "downhole cable or flexible pipe", or "transport" means that any of these deployment tools, or any other suitable equivalent means can be used in conjunction with the present disclosure without departure from the essence and scope of the present invention.

Some aspects of the present disclosure is applicable when the exploration and development of oil fields in areas such as sampling fluids and analysis in the well using, for example, one or more modules of the fluid sampling and analysis of modular dynamic formation tester (MDT) from Schlumberger.

As already mentioned, the measuring system of the present disclosure is configured or designed for easy attachment to an existing instrument column. You can draw consumer attention to the fact that if you want to add new sensors to the instrument column deployed to the field, the new sensors are merely placed in priborno the column. The total cost of the device and the length of the device can be reduced, because when the number of sensors by adding new sensors additional modules are required. In addition, the experimental sample or prototype of the sensor can be placed to perform field tests simply by putting a new sensor in the instrument column, using an easy procedure for fixing and configuration of the sensor. This possibility reduces the development time and reduces costs at the stage from development to serial production of new measuring systems.

In some embodiments, the implementation disclosed in this application, each sensor of the set of sensors may be associated with the electronics module, which provides a standardized connectivity electronics control system sensor. By using the same standardized electronics module for each sensor in the set of sensors flexibility of the modular system of sensors maximum increases. In some circumstances it may be impractical to use the same standardized sensor module for use in all the sensors, for example, when the various legacy systems of the sensor used in the existing downhole measurement systems. In addition, when continuous is yuno ongoing development of sensors may not be ensured full compatibility of the sensor with electronics modular sensor system. Therefore, in situations where not achieved compatibility with the electronics of the sensors according to the present disclosure are encouraged to use a standardized electronics module for each sensor of the sensor set.

The applicant notes that there are compatibility issues with the electronics of various types, which may relate to standardized modules electronics of the present disclosure. For example, compatibility issues arise regarding voltage, power, isolation from ground, etc. in electronic power supply unit, on the type of the communication device and the management device, relative to the needs of the particular instrument, such as the power consumption mode of the device, reset the device, the programming device, etc. To resolve such problems in the present disclosure proposed module electronics compliant, which is located in each sensor, so that the differences between the sensors in the array of sensors as possible excluded. Since the standard electronics module provides a uniform connectivity for all types of existing sensors, the newly developed sensors and advanced sensor modules can be used in downhole measurement systems of the present disclosure without serious limitations, due to which provided functional capability is the possibility of "plug and play", described in this application.

In the present disclosure assumes the use of architecture "plug and play"as disclosed in this application, for downhole tools and equipment, which are used for various applications in the field, such as cable logging, monitoring collector or logging of the well production, drilling & measurements, well completions, among other things. In devices of different types, having different transport means, you can easily use the sensors of the same type. In the case of this system, the reference pressure can be made, for example, a pressure sensor inserted into the descent on the cable device, during the operation of logging. In this case, the device for monitoring sensors can be installed the same type as the receiver for sensors in the descent capsule of the cable apparatus and device for monitoring are the same. In the next step the same defective sensor can be used in various devices by simply withdrawing it from one device and inserting it into another. In the presence of the above proposed system to easily correlation data taken by different devices, this will be facilitated global interpretation of the collector, as well systems devices you can get the same type of measurement with the same f the physical sense, resolution, accuracy. In addition, such data can be interpreted using conventional software, to obtain a much better estimate of the collector as of the end product for clients.

As described in further detail below, the sensors feature a "plug and play" of the present disclosure can be used in the transportation systems of various types to obtain measurements using the same sensors or sensor types. The two probes with the same design and the same calibration characteristics, will provide similar data for all transportation systems.

According to the present disclosure also provides for the possibility of applying the disclosed methods, systems monitoring in subsea pipeline or well completion, when, after the deployment of the carrier sensor multiple sensors can be flush or replace or save without excessive downtime or complex of works on modification and reconfiguration of the device.

Now refer to the drawings in which the same positions indicated similar parts, figure 1 shows a section view schematically represents an exemplary operating conditions of the present disclosure, where the downhole tool 20 is suspended on the end of the cable 22 at the location of wells, drill the new wells or barrel 12 bore. Figure 1 shows one possible situation, in accordance with the present disclosure is also assumed other working conditions. Usually borehole 12 contains a combination of fluids, such as water, mud filtrate, reservoir fluids, etc. Downhole tool 20 and cable 22 typically separated and placed at the service vehicle (not shown) at the location of the well.

Which is the example system of figure 1 can be used for downhole analysis and sampling of formation fluids. The downhole system includes a downhole tool 20, which can be used to test subsurface strata and analyzing the composition of fluids from the reservoir, associated telemetry system, controls and electronics, as well as ground installation, control and communications (referred to generally in figure 1 by the computer system). One example of such a system is the above-mentioned modular dynamic formation tester from Schlumberger.

The downhole tool 20 typically suspended in a borehole 12 at the lower end of a multiconductor logging cable or cable 22 wound on the winch (not shown). The logging cable 22 is typically electrically connected to the ground electric control system, with appropriate electronics and processing system for a downhole tool 20. The downhole tool 2 includes an elongated housing 26, containing various electronic components and modules, which are schematically represented in figure 1, designed to provide necessary and desirable functionality downhole tool 20. Selectively retractable node 28 of the inlet fluid and selectively retractable fixing device element 30, respectively, located on opposite side surfaces of the elongated body 26. Node 28 of the inlet fluid operable designed to selectively seal or isolate selected portions of the wall of the borehole 12 to carry out a message on the pressure and the fluid surrounding underground formation. Node 28 intake of fluids may be the only probe module 29 (shown in Fig.1) and/or packer module 31 (also schematically represented in figure 1). Examples of downhole tools are disclosed in U.S. patent No. 3780575, 3859851 and 4860581.

One or more modules 32 sampling fluids and analysis are provided in the housing 26 of the device. The fluids produced from the formation and/or borehole, the flow through the pipe 33, through the module or modules 32 analysis of fluids and can then be discharged through the opening module 38 pumping. As a variant of the reservoir fluids from the pipe 33 may be sent to one or more cameras 34 and 36 of the collection of fluids, such as sample chamber with a volume of 1, 2 or 3/4 6 is allanov (4,545; 12,498 or 27,27 l) and/or six modules of multiple sampling capacity of 450 cm3intended for reception and retention of fluids produced from the reservoir, during transport to the surface.

Nodes intake of fluids, one or more analysis modules of the fluid flow line and camera collecting fluids and other functional elements of the downhole tool 20 are controlled by an electric control system, such as ground-based electrical control system 24. As described in more detail below, the electrical control system 24 and other control system located in the housing 26 of the device can have, for example, the functional ability of the processor to determine characteristics of the formation fluids in the device 20.

The system 14 in its various implementations may include a control processor 40, functionally associated with the downhole device 20. Control processor 40 shown in figure 1 as an element of the control system 24. The methods disclosed in this application may be implemented using a computer program that executes the processor 40, located, for example, the control system 24. The program is connected to receive data, for example, from module 32 sampling fluids and analysis on logging cable 22 and to transmit control signals to the working elements of the borehole when the ora 20.

The computer program may be stored on a suitable used a computer data medium associated with the processor 40, or may be stored on the external, the computer uses the data carrier, and can be linked electronically to the processor 40 for use when needed. The data carrier may be implemented as one or more of the currently known data carriers such as magnetic disk installed in the disk drive, or optical readable persistent storage device on the CD, or read the device of any other type, including remote storage device associated dial-up connection, or promising media data suitable for the goals and objectives described in this proposal.

In some embodiments, implementation of the present disclosure, the methods and installation disclosed in this application may be implemented in one or more modules of sampling fluids and analysis of the device for testing of formations from Schlumberger, modular dynamic formation tester (MDT). The device for testing of formations, such as modular dynamic formation tester, you can add advanced functionality to determine downhole characteristics of the formation fluids and sampling of formation fluids. The device is for testing of formations can be used for sampling formation fluids in combination with the definition of the downhole characteristics of the formation fluids.

The present disclosure provides methods and installation having multiple discrete sensors for downhole analyzer fluids, shown in figure 1. Each sensor of the group of sensors configured or adapted for independent fastening and removal using "plug and play" and has functionality, control and communications, which make the sensor is individually controllable and configurable.

Figure 2 shows one implementation of the sensor configuration according to the present disclosure. Figure 2 shows the General concept of the present disclosure, in accordance with which the individual sensors are installed directly in the pipeline and can be located inside the casing of the device (not shown) or may be accessible from the outside of the casing of the device (note 3). As shown in the embodiment of figure 2, each sensor can be individually attached or attached to the pipeline and may be configured or designed to communicate with the ground unit, individually or through cost control. Each sensor in the set of sensors may have the functional ability to "plug and play"and can be configured or adapted so that it had an independent elements in the management and communication. However, in accordance with the principles disclosed in this application, a standardized form (s) of sensors and/or standardized jacks or connectors may be provided or may not be provided. To obtain significant design flexibility of layout of the sensors without increasing the complexity of the device in the embodiment of figure 2 may provide a standard mechanical interface between the pipeline and the sensor unit.

Figure 3 shows one possible configuration of the device for testing of formations intended for downhole sampling and sample fluids and analysis. The analysis module of the fluids are included in the instrument column, shown in figure 1, and includes a group of sensors having multiple sensors for the analysis of fluids in the well. In one possible configuration, shown in figure 3, one or more sensors (e.g., sensors a-C in figure 3) can be installed on one or more ports of the sensors (for example, ports 1-3 sensors figure 3) in the module analysis of fluids.

The present disclosure provides a standardized sensor that can be installed in any one of the numerous ports of the sensors. Feature plug-and-play sensors is provided by a land registration system that is able to recognize specific Yes the chick, which is installed in a particular port of the sensor, without excessive configuration changes or modifications to the existing system. While land registration system has the ability to communicate with the software processing of the sensor data, so that the whole system works with a high degree of reliability and security.

In one possible embodiment of the present disclosure, the device configuration can be entered in a land-based computer system (note 1). The configuration of the device provides the ground system information about which modules of the device included in the instrument column, and the layout of the modules, for example, the layout of the instrument column (note 1) is inserted into the ground control system to the descent of the instrument column in the well. Configuration of sensors analyzer fluids also may be injected into the ground computer, for example, the order and position of the sensors in the module analysis of fluids (note 3) entered into a ground control system. In the present disclosure have assumed various features, such at which configuration data can be entered manually by the operator and/or may be provided directly from downhole tools using appropriate functionalisations "plug and play". In each case, the ground-based computer communicates with software for data processing, which complies with the sensors. The software for data processing may be configured or designed to handle data from downhole tools and sensors. Electronics sensors associated with each sensor or sensor module configured or designed to present data from the sensors to ground the system using an appropriate telemetry data transmission system. Communication with the downhole device is initiated by the ground computer to check whether the configuration of the device and sensors are correct. After checking and confirmation of the correctness of the configuration of the downhole tools and sensors ground-based computer initiates the acquisition of data from the downhole tool. Thus, the usability of the architecture of the plug-and-play between ground systems and data acquisition and downhole tools having multiple sensors in the sensors group.

In the implementation of figure 3 structure of the device provides for the maintenance of the three slots or sockets sensors (a, b, C) with the functional ability to "plug and play" modular sensor unit. Note that the number of sensors and slots of sensors is not limited the about three, and may provide any desired number. The design and size of the sensors, as well as slots sensors are standardized, so that individual sensors can be installed on any of the places for sensors, which are provided in the sensor unit. The sensors and slots of the sensor of figure 3 can be accessed directly from the outside of the casing of the device, and there is no need to remove the chassis from the electronics module from the housing in order to install or remove the sensor.

Figure 3 also shows the additional sensor D, having a configuration different from the configuration of the sensors A-C. the Sensor D is installed in the sensor port in the block and is not directly accessible from the outside of the casing of the device. However, the sensor D with standard electronics and gear interface has small dimensions, the result of which provided additional functionality for the configuration of the sensor. In the example sensor D feature plug-and-play supported for electronics and/or parts of the software architecture of sensors, so that the total length of the device can be reduced by increasing the total number of sensors in the module.

On figa and 4B shows the architecture of a group of sensors, in which multiple sensors are located inside the casing of the device with the formation of chains. Each sensor of the set of Katya the t gate line and the electrical connector (note 4), which connects neighboring sensors or modules downhole instrument column. In configurations from figa and 4B, the sensors may be deleted or added simply by separation or attachment parts of the connector. Suitable mechanical connectors, such as blade connectors that can be used for mechanical connection and retention of the connected sensors. Therefore, arrangement or rearrangement of the positions of the sensors and replace other sensors can be easily achieved without excessive downtime and modifications of the device. In addition, the shell casing surrounds the connected sensors, so that provided mechanical stability and protection of the sensor module and the people near the device. For example, the shell casing in the implementation shown in figa and 4B, provides safety to the operator of the device from explosive internal pressure in the device.

On figa and 5B shows the architecture of the interfaces between the control Board and sensors group. As described above, each sensor according to the present disclosure has a common interface, the sensor electronics and has the functional ability to communicate with the sensor. Control Board supports a common interface that enables communication with the sensors for managing and recording data. For example, the common interface may b the th any one of the serial peripheral interface (PPI), controller local area network (CCL), RS232 serial interface, communication protocols. Harness and connectors can be common to all sensors. Because the format of the communication Protocol and data the same, for the control card does not need information about which port is connected to a specific sensor. Control Board sends a command and/or query with a ground-based computer to each sensor in sequence, and sequentially registers the data from the attached sensors. The recorded data are transmitted to the surface computer using the telemetry system.

On FIGU shows another interface architecture according to the present disclosure. Due to the complexity of sensor electronics all electronics of the sensor cannot be installed in the sensor housing, and can be provided for an additional charge sensor electronics. In the case of figv cartridge sensor includes space for additional charges.

On figs shows another interface architecture for a group of sensors according to the present disclosure. In the embodiment of figure 5, each sensor in the set of sensors directly connected to the telemetry line to perform the functions of control and communication. The configuration shown in figs provided will complement the supplemented flax independence and the ability to change the configuration of each sensor in the set, since the intermediate electronics included in the sensor housing and has a direct connection with telemetry line.

On fig.5D shows another interface architecture for a set of sensors according to the present disclosure. In the embodiment of fig.5D each sensor in the set of sensors has the electronics module associated with it in such a way that provides standardized communication with control electronics/telemetry system. As already discussed above, the configuration shown in fig.5D, flexibility each sensor in the set, since different sensors can be used with fewer problems in terms of compatibility. It is assumed that all sensors can use the same oscillator, resulting in simplifying the overall architecture of the downhole measurement system.

Figure 6 presents one possible way of downhole fluid analysis using systems of the present disclosure. The downhole tool is placed in a borehole for data logging in the borehole. The configuration of the instrument is introduced (step 100) to the control system and injected (step 102) the configuration of the sensors to the system as a whole to configure and prepare (step 104) to work. After checking (step 106) configurations of the device dutchican start (step 108) registration data on downhole sensors.

In General, the methods disclosed in this application can be implemented by software and/or hardware. For example, they can be implemented in the operating system kernel, in a separate user process, in the package library programs associated with the telemetry system and/or network applications, on a specially constructed machine, or on a network interface Board. In one embodiment, the methods disclosed in this application, can be implemented in software such as an operating system, or application program that is executed in accordance with the operating system.

Hybrid implementation of software/hardware of the proposed methods can be implemented on a programmed General purpose machine selectively activated or reconfigured by a computer program stored in the storage device. This programmable machine may be implemented based on the network host machine General purpose, such as a personal computer or workstation. In addition, the methods disclosed in this application at least partially implemented on a card (for example the interface Board) for the network device or computing device of General use.

The foregoing description presents only the about to illustrate and describe the invention and some examples of its implementation. Not intended to be exhausted or to limit the invention to any precise open form. In light of the above ideas are numerous possible modifications and variations. Aspects of these applications were chosen and described to best explain the principles of the invention and its practical applications. The preceding description assumes providing other professionals in the art the possibility of better use of the invention in various implementations and aspects and with various modifications suited to the particular intended use. It is assumed that the scope of the invention defined by the following claims.

1. The downhole system is configured for downhole operation, within a borehole, comprising:
module sampling and analysis, this module sampling and analysis contains:
casing;
the tubing in the casing for fluid extracted from the formation to flow through the downhole module sampling and analysis, within a borehole, the pipe has a first end for entry fluid and a second end for exit of fluid from the module sampling and analysis;
the set of sensors with multiple sensors placed in the message by the fluid pipe, for measuring the selected parameters; and
management system, RMS is figurirovanii or developed for selective and independent operation of each sensor from a set of sensors, this
each sensor of the set of sensors includes a selectable item sensor configured or designed for individual and independent communication and control.

2. The downhole system according to claim 1, in which each sensor from a set of sensors placed in the corresponding port on the sensor so that each sensor is in fluid communication with the pipeline.

3. The downhole system according to claim 2, in which each sensor of the array of sensors is available on the outside of the casing.

4. The downhole system according to claim 1, in which each sensor of the sensor set is interchangeable and replaceable.

5. The downhole system according to claim 1, in which each sensor from a set of sensors located inside the shroud.

6. The downhole system according to claim 1, in which each sensor from a set of sensors connected to at least one other sensor of the sensor set.

7. The downhole system according to claim 1, in which the module sampling fluids and analysis includes a sensor unit and a set of ports of the sensors in the sensor unit, configured or adapted for holding a variety of sensors from a set of sensors.

8. The downhole system according to claim 7, in which the ports of the sensors and each sensor of the set of sensors have standardized forms for interchangeability.

9. The downhole system according to claim 1, in which each sensor from a set of sensors, the positioning on the pipeline.

10. The downhole system according to claim 1, in which each sensor from a set of sensors located within the enclosure and includes a section of the pipe and the electrical connector, while
many sensors are placed linearly so that the section of the pipeline and an electric connector of each sensor is connected with a corresponding section of the pipe and the electrical connector is at least one other sensor of the sensor set.

11. The downhole system of claim 10, in which each sensor of the array of sensors is tubular in shape and multiple sensors has the same outer diameter.

12. The downhole system according to claim 1, in which the control system is configured or designed to communicate with the ground system for control and communication each sensor of the sensor set.

13. The downhole system 12, in which the control system is configured or designed to provide ground systems location and name of each sensor of the sensor set.

14. The downhole system according to item 13, in which the control system automatically provides ground system location and identification information of each sensor from a set of sensors based architecture "plug and play".

15. The downhole system 12, in which the control system is configured eliazabeth for telemetry data to the ground system, for the management and development of each sensor from the group of sensors.

16. The downhole system 12, in which the control system is configured or designed to acquire sensor data from each sensor of the sensor set.

17. The downhole system 12, in which the management system contains many control systems sensor, each control system sensor made in one piece with the respective sensor from a variety of sensors.

18. The device is configured for downhole location for sampling and characterization of formation fluids, skvazhina located in the oil reservoir, containing:
the analysis engine fluids, and the analysis module of the fluids contains:
the pipeline fluid extracted from the formation to flow through the analysis module fluids, the tubing has a first end for entry fluid and a second end for exit of fluid from the block analysis of the fluids; and
the set of sensors with multiple sensors placed in the message by the fluid pipe, for measuring the selected parameters,
each sensor of the set of sensors includes a selectable item sensor configured or designed for individual and independent communication and control.

19. Borehole system for determining characteristics of a fluid, with konfigurirovanija for downhole operation, within a borehole, comprising:
module sampling fluids and analysis this module sampling fluids and analysis contains:
casing;
the tubing in the casing for fluid extracted from the formation to flow through the downhole module sampling fluids and analysis, within a borehole, the pipe has a first end for entry fluid and a second end for exit of fluid from the module sampling fluids and analysis;
the set of sensors with multiple sensors placed in the message by the fluid pipe, for measuring the selected parameters; and
the control system is configured or designed for selective and independent operation of each sensor from a set of sensors, with this
each sensor of the array of sensors has an associated electronics module, which provides a standardized connectivity electronics control system.

20. Borehole system for determining characteristics of a fluid according to claim 19, in which the same electronics module associated with each sensor of the sensor set.

21. The system is configured for downhole operation, in one or more boreholes, containing:
the first device containing a first slot of a sensor for receiving the first sensor; and
a second unit containing a second slot sensor for receiving Vtorov the sensor, while the first and second slots of the sensors have the same configuration, and the first and second devices are devices of different types.

22. The system according to item 21, in which the socket and the sensor is configured to obtain the functionality of a "plug and play".

23. The system according to item 21, in which the first and second devices are deployed at various transportation devices.

24. The system according to item 21, in which the first and second sensors are the same sensors.

25. The method of determining downhole characteristics of fluids involving downhole tool, comprising stages, which are:
deploying the downhole tool for sampling and characterization of formation fluids within the well into the oil reservoir, the device contains:
the analysis engine fluids, and the analysis module of the fluids contains:
the pipeline fluid extracted from the formation to flow through the analysis module fluids, the tubing has a first end for entry fluid and a second end for exit of fluids from the analysis module fluids;
create a set of sensors with multiple sensors in a message to the fluid pipe, for measuring the selected parameters; and
configure the control system for selective and independent operation of each sensor of the set of the sensors, in which
each sensor of the set of sensors includes a selectable item sensor configured or designed for individual and independent communication and control.

26. The method of determining characteristics of formation fluids into the borehole on A.25 containing:
enter the device configuration in the control module and communication;
enter the configuration of the sensors to the control module and communication;
configuring a data acquisition system based on a configuration of sensors;
the initiating communication device;
check the configuration of the device and sensors; and
start data acquisition on the basis of the test configurations of the device and sensors.



 

Same patents:

FIELD: oil and gas industry.

SUBSTANCE: determination is carried out in a well equipped with a tubing string with an electric-centrifugal pump and a return valve at the end. In order to determine water cut the well is selected in the middle of an oil deposit with production modes close to the average values for the deposit. The well is operated not less than the time required to reach full operation. The well is stopped and process holding is made till gas separation from the well product and breakage into oil and water. Height of the liquid column is measured, volume of the water cut is determined against the boundary line of liquid and gas and water and oil.

EFFECT: improving accuracy of the water cut determination in the well.

FIELD: oil and gas industry.

SUBSTANCE: method involves identification of a variety of processes and their parameters; with that, processes include drilling and sampling processes and parameters include drilling and sampling parameters. Also, the method involves processing of parameters for each of the processes by means of a special modelling processor creating forecasts related to formation sampling. With that, special modelling processor includes at least one of simulators of a well shaft hydraulic system, a simulator of filter cake of drilling mud, a simulator of formation stream or a simulator of tool feedback. The method also involves classification of forecasts related to formation sampling based on at least one of sample fluid medium quality, duration of sampling process, productivity of sampling process or cost of sampling, and planning of sampling operation based on classified forecasts.

EFFECT: improving efficiency or productivity of a sampling operation of formation fluid medium or operation.

25 cl, 15 dwg

FIELD: machine building.

SUBSTANCE: device includes sampling tube mounted in pipeline perpendicular to flow movement and provided with slot-like inlet from side of flow movement. Slots in inlet are made horizontally along the height of pipeline and are directed toward liquid flow. Depth of slots changes from small near pipeline walls to largest near pipeline axis. Opposite to inlet in sampling tube there made is a vertical slot.

EFFECT: increasing sample uniformity and improving accuracy of sample composition determination.

4 dwg

FIELD: oil and gas industry.

SUBSTANCE: in addition, analysis of isotopic composition of carbon of sum of hydrocarbons C2-C6 is performed and limits of values of isotopic composition of carbon, methane and isotopic composition of carbon of sum of hydrocarbons C2-C6 for reference horizons are determined. Tables and/or graphs represent ranges of values of isotopic composition of gases from reference horizons and gases are represented from inter-string space of wells or drilling fluid; as per the degree of similarity or coincidence of the above ranges of those values (or individual points) there evaluated is nature of investigated inter-string gas shows.

EFFECT: improving reliability in determination of nature of inter-string gas shows.

1 ex, 2 tbl, 1 dwg

FIELD: oil and gas industry.

SUBSTANCE: method for assessing a gas-recovery ratio for the volume drained by at least one productive gas well comprises: calibration of the changes of an isotopic composition of at least one component of the natural gas recovered from the gas well with the gas-recovery ratio gain. Sampling of the natural gas recovered from the production well, and analysis of the sample for preparing the isotopic composition of the component of the natural gas. Use of the previous calibration and the specific isotopic composition for assessing the gas-recovery ratio for the volume drained by the gas well. Use of the assessed gas-recovery ratio and total volume of the natural gas produced from the gas well to determine the volume drained by the gas well.

EFFECT: amended assessment of the gas-recovery ratio which is based on the calibrated relation of the changes in the isotopic composition of one or more components of the produced gas and the gas-recovery ratio for the volume drained by the productive gas well.

3 dwg, 9 cl

FIELD: oil and gas industry.

SUBSTANCE: in process of sampling, values of specific electric conductivity are measured on liquid arriving into a sampling chamber. At the same time measured values of specific electric conductivity and readings of pressure and temperature sensors are recorded with a surface receiving-processing station, and to form a channel of communication with it and to provide for sampler lowering and lifting, an armoured geophysical cable is used, which is withdrawn from a drilling string via a sealing device. Besides, before opening of a potentially producing bed, the sampler at the vibration and impact safe distance from a bit is fixed on the cable in the above-packer space of the above-bit packering unit, providing for direct circulation of the mud. And after opening the sampling operation is carried out by means of multiple sampling and remote express-analysis of fluid composition in every sample according to specific electric conductivity, for this purpose the chamber by means of piston displacement is released from the first sample with fluid discharge into the above-packer space. Then it is put into the initial working condition, and similarly to the first sample taking, further sampling is carried out, until extremum of specific electric conductivity values is achieved, and on the basis of this parameter, a decision is made to lift the last sample from the well or to continue drilling process, and bed parameters are identified on the basis of pressure, temperature sensor readings, and by the value and speed of increments of specific electric conductivity.

EFFECT: increased efficiency of sampling of oil reservoirs opened with drilling, also in abnormal boreholes.

8 cl, 6 dwg

FIELD: oil and gas industry.

SUBSTANCE: method includes taking of a downhole sample by a sampler and its transportation to the surface. At that at the surface the sealed sampled chamber is set in different positions under vertical angles less than 180 degrees and measurements of the fluid are made by primary detectors installed inside the chamber on the surface of a dividing piston; then content of the downhole sample is analysed and calculated.

EFFECT: checkout of parameters for the total downhole sample, acquisition of reliable data on the fluid, creation of cost-effective control method.

7 dwg

FIELD: oil and gas industry.

SUBSTANCE: method and tool that implements the method involving the measurement of viscosities and flow rates of fluid media of the formation and obtainment of the ratio of relative permeabilities of formation fluid media and formation wetting ability using those viscosities and flow rates of the formation fluid media.

EFFECT: testing of bottom-hole formation for determination of relative permeability under bottom-hole conditions.

18 cl, 5 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the method and system for obtaining characteristics of the composition gradients and fluid medium properties of the involved header, and analysis of the header properties based on such gradients.

EFFECT: improvement of the device.

20 cl, 3 dwg

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to sampling of deep wells. Proposed device comprises suction-type sample intake chamber with separation piston, check valve and check valve seat, ballast chamber with pressure regulator, sample pressurisation mechanism with compressed gas chamber, pressurisation fluid chamber and pressurisation piston, control and data exchange module, sample input channel and valve. Said sample pressurisation mechanism is arranged between sample intake chamber and ballast chamber, and equipped with uncoupler with piston and holder. Note here that sample intake chamber is provided with extra moving piston with check valve.

EFFECT: simplified sample pressurisation mechanism.

6 dwg

FIELD: oil and gas extractive industry.

SUBSTANCE: method includes picking a sample of bed fluid under pressure by means of pump. Sample of fluid is then compressed by moveable piston, actuated by hydrostatic pressure in well through valve. Compressed sample of bed fluid is contained under high pressure inside the chamber with fixed volume for delivery to well surface. Moveable piston is in form of inner and outer bushings, moveable relatively to each other. At the same time several tanks for picking samples from several areas may be lowered into well with minimal time delays. Tanks may be emptied on well surface by evacuation pressure, to constantly provide for keeping of pressure of fluid sample above previously selected pressure.

EFFECT: higher reliability.

6 cl, 14 dwg

FIELD: oil industry.

SUBSTANCE: device has hollow body which is a fragment of force pipeline at vertically placed portion of mouth armature. Tool for controlling flow of multi-component gas-liquid substance is made in form of valve, connected to rotary support. Sample chamber is a ring-shaped hollow in hollow body, placed at same level with valve and connected at inlet to flow of multi-component gas-liquid substance through extracting channels, made on hollow body. Extracting channels are made in form of side slits, positioned symmetrically relatively to valve rotation axis. Ring-shaped hollow on hollow body is connected at outlet to locking tool, mounted at extension of valve shaft and made in form of sample-taking valve. Valve shaft and sample-taking valve are interconnected through hollow intermediate shaft. Sample-taking valve is placed in the body of locking tool with possible reciprocal movement. Valve shaft and hollow intermediate shaft are interconnected with possible mutual rotation for a quarter of one turn.

EFFECT: simplified construction and maintenance, higher quality.

4 dwg

FIELD: oil and gas industry.

SUBSTANCE: device has body in form of calibrated cylinder. From both sides lids are connected to body. Inside the body separating piston and ball for mixing sample are placed. Also provided is hydraulic resistance for slow inlet of sample. Slide valve is used for safe inletting, pressurization and depressurization of taken fluid, is connected to lid and consists of rod with channels and bushing with clamp. Clamp is held between nuts interconnected by threads, one of which is connected to rod by thread. Needle valve consists of locking pin and axle-bearing and is used to drain pressure from closed space above slide valve prior to disconnection of sample-taking container from bed-testing equipment.

EFFECT: simplified construction, higher reliability.

3 dwg

FIELD: oil industry.

SUBSTANCE: device has hollow body mounted in force pipeline, inside of which body tool for controlling flow of multi-component gas-liquid substance is placed, probing chamber with extracting channels, locking tool with handle and guiding pipe, driving valve for picking sample, mounted with possible interaction with spring-loaded rod, placed inside the shaft of flow control tool. Hollow body is a fragment of force pipeline at vertical portion of mouth armature, control tool is made in form of valve of lesser diameter, then inner diameter of hollow body, and probing chamber is a ring-shaped hollow in hollow body, positioned at same level with valve and connected at input to flow of multi-component gas-liquid substance through extraction channels, made symmetrically to rotation axis of valve, and at output - to locking tool, while rod is provided with shelves for multi-start thread of appropriate cross-section, made at shaft on length of no less than quarter of axial step of this thread.

EFFECT: simplified construction, higher efficiency.

3 dwg

FIELD: oil industry.

SUBSTANCE: device has hollow cylindrical body, branch pipes for extraction and output of sample and locking element. Body is made thick-walled. End portions of body are made in form of truncated cone and interconnected, on the side of lesser bases by means of channel. Branch pipe for extraction of sample is made elongated, with length equal to body diameter, and is let through in transverse direction of body through the center of said channel. Within limits of branch pipe cross-section its hollow is separated by slanted solid wall on two portions, each of which is connected thereto. One portion of branch pipe hollow is meant for taking sample, other one - for feeding reagent into well product. To receive trustworthy information about sample, by setting flow to homogenous state, inner surface of cone, on the side of larger base, is provided with rigidly fixed blades for turbulization of flow flowing into body, while diameter of channel connecting cones is selected equal to diameters of their lesser bases.

EFFECT: simplified construction, broader functional capabilities, higher quality of sample.

2 cl, 3 dwg

FIELD: oil industry.

SUBSTANCE: hollow body of device is actually a fragment of force pipeline at mostly vertical portion of mouth armature. Organ for controlling flow of multi-component gas-liquid substance is made in form of valve mounted on shaft having lesser size, than inner diameter of hollow body. Sample chamber is in form of ring-shaped hollow on hollow body, positioned at same level with valve. Ring-shaped hollow is connected at input to flow of multi-component gas-liquid substance through intake channels, positioned symmetrically to valve rotation axis, and at output - with locking organ. Driving screw mounted on body of locking organ is connected to sample-taking valve with possible mutual rotation and combined axial displacement. Sample-taking valve and shaft with valve are mated with possible synchronous rotation around common axis and relative axial displacement. Working organs of device are positioned immediately near main flow of substance taken as sample to provide for lesser dimensions of device and prevented freezing in winter season.

EFFECT: simplified construction, simplified maintenance.

7 dwg

FIELD: oil production industry, particularly methods or devices for cementing, for plugging holes, crevices, or the like.

SUBSTANCE: device comprises inflatable packers to be lowered into well along with flow string. One flow string end is closed to provide simultaneous well bore packing, another end is connected to production equipment. Flow string is provided with centralizers located near inflatable packers. Formed in flow string are additional holes located opposite to packers. Well pump is installed inside flow string. High-pressure water conduit having low diameter is connected to above holes. Flow string has perforated orifices created between inflatable packers.

EFFECT: extended operational capabilities.

1 dwg

Sampler // 2257471

FIELD: oil-field equipment, particularly for obtaining fluid samples or testing fluids in boreholes or wells and may be used for integrated obtaining sample of multicomponent liquid-gas systems transported through pipelines.

SUBSTANCE: sampler comprises hollow body installed in high-pressure pipeline of wellhead fittings and extraction chamber with discharge channels. Rotary tool adapted for multicomponent liquid-gas medium flow regulation is installed inside the body. Sampler also has shutoff member with actuated sample extracting valve, handle and guiding tube. Sampler comprises hollow body made as a part of high-pressure pipeline and tool adapted for multicomponent liquid-gas medium flow regulation arranged in hollow body. The tool consists of flap installed on a shaft and having diameter corresponding to inner hollow body diameter, extraction chamber used to extract and mix multicomponent liquid-gas medium flow formed as annular cavity around hollow body. The cavity is divided into inlet and outlet parts by partition arranged at flap level. Inlet and outlet parts communicate with common multicomponent liquid-gas medium flow correspondingly through inlet and outlet channels on hollow body and through opening formed in the partition at sample extracting valve inlet. Drive screw installed in shutoff member body is connected with sample extracting valve so that drive screw and sample extracting valve may perform mutual rotation and move in axial direction. Sample extracting valve and shaft with flap mate each other so that they may perform synchronous limited rotation about common axis and mutual axial movement.

EFFECT: increased simplicity, provision of high-quality mixing of sample product and increased sample reliability.

3 dwg

Sampling device // 2258807

FIELD: oil field equipment, particularly for take samples from wellhead, namely for integrated sampling multi-component gas-liquid medium transported through pipelines.

SUBSTANCE: device has hollow body built in pressure pipeline and formed as a part of the pipeline located on vertical part of wellhead fittings. Multi-component gas-liquid medium flow control unit is made as a gate connected to rotary support shaft. Sampling chamber is created as annular cavity arranged on hollow body at gate level. Sampling chamber inlet is communicated with multi-component gas-liquid medium flow through intake manifolds formed on hollow body. Intake manifolds are side slots arranged symmetrically about gate axis of rotation. Sampling chamber outlet is communicated with shutoff member installed on rotary gate support shaft extension. Shutoff member includes seat, hold-down screw and ball contacting with the seat and embedded in pressure screw end.

EFFECT: simplified structure and increased sampling quality.

2 dwg

FIELD: mining industry, particularly to take subsurface oil samples in running and exploratory wells working in flow mode.

SUBSTANCE: sampling device has tubular body with lock mechanism arranged inside the body and connected to controlling valve assembly from the first side and controllable valve assembly from the second side thereof. Joint relay is screwed on the controlling valve assembly. The controlling assembly is retained in its opened position by joint relay including body with orifices for pin receiving, pusher acting upon the controlling valve assembly and bush with fluid circulation orifices. Valve assemblies include all-rubber valves having 30° cone angles. The relay has barbs to engage with production string connector. When sampling device moves downwards the barbs are brought into folded state.

EFFECT: increased operational reliability and prevention of oil sample degassing due to improved air-tightness of sampling device interior.

2 cl, 1 dwg

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