Device for well deep sampling

FIELD: oil and gas industry.

SUBSTANCE: invention is related to oil and gas industry, in particular, to procedure of fluid and gas sampling in wells. Device consists of cylindrical casing, where the following components are installed: sample receiving chamber of suction type with separating piston, ballast chamber, module of control and information exchange interface. The following components are introduced into cylindrical casing between sample receiving and ballast chambers, leakproof relative to environment, serially connected downstream sample receiving chamber: uncontrolled adjustable reduction gear of fluid pressure and hydraulic relay controlled by electric current that is supplied from module of control and information exchange interface, which uses elastic mechanic oscillations excited on device body and noise-immune coding of information for control of device operation, and also for communication to personal computer.

EFFECT: increase of device operation reliability, monitoring of sample receiving chamber opening and time of its filling with fluid, expansion of equipment operation thermobaric range, provision of sample transport safety.

5 cl, 1 dwg


The invention relates to the oil and gas industry, in particular to techniques for sampling liquid and gas wells.

Famous sampler [1], consisting of a hydraulic actuator, gettimer, mechanism of opening of the sampling chamber value, sampling chamber value and the ballast chamber. The disadvantages of the design are:

first, a small interval of time expires gettimer;

secondly, the strong dependence of the time of gettimer from external temperature and pressure;

thirdly, the lack of controlling the filling of liquid or gas sampling chamber value.

The presence of capillary tubes and the flow of oil through it in this design did closeprogram the sampling time in the borehole due to the change in the viscosity of the used oil under the action of thermobaric conditions of the external environment. In addition, this low-tech due to the clogging of the capillary tube.

After tripping hydrocele liquid rushes in prosoprano the camera. The degassing of the liquid is prevented by the presence of oil under the piston chamber, which expires in similar capillary tube in the ballast chamber. The rate of flow is established experimentally, and therefore, the degree of rangatiratanga liquid samples it is impossible to establish that affects repeat the TB results in the analysis of samples.

Famous sampler [2], consisting of hydraulic, electronic module, mechanism of opening of the sampling chamber value, sampling chamber value. The disadvantages of the design are:

first, the design complexity, due to the presence of a large number of nodes and technically complex parts;

secondly, the lack of controlling the filling of liquid or gas sampling chamber value;

third, restrictions on hydraulic drive for the operating pressure range.

In fact, this sampler follows the ideology of sampling described in [1]. Instead of gettimer electric timer is used, and the hydraulic actuator is equipped with a controllable opening mechanism of the channel expires oil. Still no control over the opening of the sampling chamber value. Described in [2] control methods only indirectly can yield results. First, the presence of current in the actuator does not always speak about his healthy state. Secondly, the pressure sensor may capture only a partial movement of the piston of the hydraulic drive, which will not lead to the opening of the sampling chamber value.

The absence of a control process fill fluid sampling chamber value does makes the process meaningless. Firstly, there is the degassing of the sample due to the lack of ballast camera with hydrocortisone at least in the form of capillary tubes. The second is x, because of the strong pressure drop in prosoprano chamber is a strong blow of the piston, which can lead to deformation of the structure, and consequently, affects its performance properties.

In any mechanism there are capacity limits and by analogy with the device [2] it is necessary to use interchangeable components to operate over a wide pressure range.

An object of the invention is to improve the reliability of device operation, the control of opening and the time of filling fluid sampling chamber value, the expansion temperature range of operation of the equipment without the use of interchangeable parts, ensuring the safe transport of samples were taken.

The technical problem is solved by the proposed device for sampling fluid, consisting of the suction chamber, the ballast chamber (the chamber at atmospheric pressure) and located between them managed stabilizer pressure drop.

What's new is that:

a) does not require mechanical cock to its original state governing bodies, which during operation are motionless;

b) manage to combine the control for the opening of the sampling chamber value and control over the time of its completion and implementation of this control is not indirectly, but directly at the sensor level;

C) controlled stabilizer is adeniya pressure, consisting of a series unmanaged custom gearbox fluid pressure and managed hydrocele electric current seamlessly within specified through the computer time interval to fill prosoprano the camera regardless of the temperature and pressure used in the oil system;

g) in prosoprano the camera for the first time introduced under pressure by a dividing piston, preventing the filling of its breakdown;

d) in prosoprano chamber is a pressure sensor which is connected to the secondary circuits after removing the sampler from the borehole with the aim of continuously monitoring the pressure of the sample in the chamber during transportation and delivery of appropriate signals in case of seal failure or exceeding the permissible limit for the pressure in the chamber.

The drawing shows the design of the device, where 1 is the head of the fastening device to the wire or geophysical cable, 2 - spring, 3 - filter 4 - axle seat sealing cone, 5 - sealing cone, 6 - separating piston, 7 butter, 8 - case sampling chamber value, 9 separating the piston from the pressure sensor in prosoprano chamber 10 to the pressure sensor, 11 - pressure sensor interface, 12 - stop the puck, 13 - filter 14 - spring, 15 - ball, 16 - protective tube, 17 - unmanaged custom ed is ctor fluid pressure, 18 - managed hydrocele electric shock, 19 - case ballast chamber, 20 gauge, 21 - protective tube, 22 - case control electronics, 23 - management module and interface information exchange, 24 - batteries, 25 - seasonthey, 26 - lower shank.

The operation principle of the sampling wells.

On the surface of the earth staff prepares the device.

First initialize the control module via a personal computer to work on a given program, taking into account the presence (absence) in linking multiple devices sampling with subsequent assignment of the upper device status "main", and other devices "slave".

Thus seasonthey 25 by the elastic mechanical waves propagating through the device, and error-correcting encoded information, allows you to control the sampling of several similar units in the layout.

In the ballast chamber is checked no oil by the extraction tube 21 with the subsequent installation in place. In the suction chamber, the piston 6 is given in the upper position and built pressure in the oil pumped through the valve 15. The pressure is selected at 10% above the wellhead pressure issleduyuschimi.

After setting the device at the sampling point on command from the control module begins the process of transmission oil from the suction chamber in the ballast. Unmanaged custom gearbox fluid pressure, designed for small expenses, supports, slaborebristaya largest outlet pressure when a large change in the input.

By periodically switching on and off managed hydrocele 18 electric current and control the oil level on the testimony of the level sensor 20 a smooth controlled process time. After a process of flowing oil pressure at the inlet unmanaged custom gearbox fluid pressure is zero.

Sources of information

1. Copyright certificate EN No. 2078206, IPC 6 EV 49/08, publ. BI # 10 of 27.04.1997,

2. Copyright certificate EN No. 2280160, IPC 6 EV 49/08, publ. BI No. 20 dated 20.07.2006,

1. Device for selection of the deep samples from wells, consisting of a cylindrical body in which probationa Luggage suction type with a separating piston, the ballast chamber, the management module and interface exchange of information, characterized in that the cylindrical housing between prosoprano and ballast chambers sealed from the external environment, introduced sequentially connected, the following from the sampling chamber value, n is a managed custom gearbox fluid pressure, hydrocele, a controlled electric current coming from the control module and interface information exchange using elastic mechanical vibrations induced on the device, and error-correction coding information to control the operation of the device, as well as for communication with a personal computing machine.

2. The device according to claim 1, characterized in that probationa Luggage under the separating piston is made with the possibility of creating excess pressure.

3. The device according to claim 1, characterized in that the unmanaged custom gearbox fluid pressure, hydrocele controlled electric shock, do not require reloading.

4. The device according to claim 1, characterized in that the unmanaged custom gearbox fluid pressure, hydrocele controlled electric current is arranged to control the beginning and the fill rate sampling chamber value, given the pressure and temperature of the environment through the management module and interface information exchange, based on the direct method of measuring the level of selected samples.

5. The device according to claim 1, characterized in that it is configured to control the pressure in prosoprano chamber without loss of pressure.


Same patents:

FIELD: oil and gas industry.

SUBSTANCE: invention relates to devices for sampling of horizon fluids from gas and oil wells at specified depth. The technical result is achieved in the mechanism of valve control by means of the following: in a case with a bushing and a plunger with holes for a calibrated pin positioned therein the mechanism is additionally equipped with a device in form of a cartridge located in the case of the mechanism above the bushing and interacting with the upper part of the plunger equipped with sealing rings insulating a cavity of the cartridge placed above the upper part of the plunger.

EFFECT: upgraded reliability and quality of sampling at any horizon conditions including aggressiveness of horizon and also possibility of operation of mechanism valve control with majority of employed types of samplers.

1 dwg

FIELD: mining; physics.

SUBSTANCE: device includes seat and ferromagnetic valve, the seat being equipped with a permanent magnet system, while the valve has ferromagnetic inserts with Curie magnetic transition point equal to oil temperature at the sampling site.

EFFECT: improved device efficiency due to actuating valve device at given oil sampling site and creating additional press force.

1 dwg

Subsurface sampler // 2333358

FIELD: petroleum industry.

SUBSTANCE: invention relates to the mining industry and can be used for taking subsurface samples of oil in production and exploration wells, mainly operating by the natural flow production method. The subsurface sampler contains the receiving chamber, the upper and the lower valves, the piston, sealing assemblies, valve rods for retaining samples in the sampler, the locking mechanism, the upper head and the lower tail piece with a hole for passing the fluid; the sampler is also provided with a stirrer located in the receiving chamber between the upper and the lower valves. The piston is of cylindrical form with axial boring, in which a spring-loaded valve is accommodated. The retaining and restricting nuts are provided in the bottom of the piston. The subsurface sampler is made so that it can be connected with the valve control mechanism in the upper and in the lower parts of the sampler.

EFFECT: increased strength of the sampler and operational reliability.

2 cl, 3 dwg

FIELD: petroleum industry.

SUBSTANCE: invention relates to investigations of subsurface samples of fluids and particularly, to taking aliquot subsurface microsamples of formation fluids for conducting in-situ express analysis. The well device contains the sampling tank and several microsampling chambers. Microsampling chambers may have at least one window for input of energy of visible emission, emissions in the near and middle fields of the infrared range and energy of other kinds of electromagnetic emission into the tank for samples collected in the microsampling chamber, in the well or downhole. Such window can be made of sapphire or another material transparent for electromagnetic emission. Besides the whole microsampling chamber can be made of sapphire or other material transparent for electromagnetic emission with a possibility of visual control or analysis of samples in the microsampling chamber. The microsampling chamber makes it possible to immediately analyse a sample obtained in situ, on the surface to determine the quality of the sample contained in the main sampling tank or to make thorough analysis of the same.

EFFECT: increased sampling capacity and express analysis of samples, more accurate determination of the parameters of the sample.

30 cl, 8 dwg

FIELD: mining.

SUBSTANCE: invention relates to determination of various well characteristics in the underground formation, through which the borehole passes. For this purpose a pressure drop is created due to the difference between the internal pressure of fluid that passes through the drilling tools and pressure in the circular space in the borehole. The device contains an extension arm that can be connected with the drilling tools and has an opening that enters into the chamber in the extension arm. A piston is located in the chamber with a rod passing through the opening. The piston can move from the closed position when the rod blocks the opening to the open position when the rod is retracted into the chamber to form a cavity for intake of well fluid. A sensor is located inside the rod, which is intended for data collection from the well fluid contained in the cavity.

EFFECT: increase of accuracy of determination of well characteristics.

34 dwg, 9 dwg

FIELD: method and sensor for gas monitoring in well environment.

SUBSTANCE: method involves providing infrared light-emitting diode in well; transmitting corresponding infrared signals to the first optical path extending from the diode through well gas sample and the second optical path extending from the diode through gas sample; detecting transmitted infrared signals and determining concentration of component in well gas sample from detected signals. The first optical path is free of liquid.

EFFECT: increased accuracy of gas monitoring.

36 cl, 4 ex, 19 dwg

FIELD: equipment for reservoir gas presence in drilling mud flow passing via well during well drilling.

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EFFECT: increased reliability and accuracy of gas detection.

16 cl, 4 dwg

FIELD: in-situ or remote measurement and analysis of drilling mud, completion fluid, completion fluid, industrial solutions and reservoir fluids.

SUBSTANCE: method involves taking liquid samples from predetermined liquid sample taking points where drilling mud, completion fluid, completion fluid, industrial solutions and reservoir fluid flow or are stored; introducing the samples in chemical analyzing microfluid system linked to computer device; performing one or several selected tests in said microfluid device with the use of test result detecting and data creation means; converting said data with analytic test results obtaining; monitoring said results to control selected parameters of drilling operation, reservoir penetration and operation.

EFFECT: decreased amount of sample and test reagents.

12 cl, 3 ex, 3 tbl, 5 dwg

FIELD: oil and gas production, particularly equipment for oil and gas property investigation under reservoir conditions.

SUBSTANCE: plant comprises piston container with plug and transfer unit, which moves sample from piston container into measuring press including two piston pumps having equal capacities. One piston pump delivers sample from piston container, another one lowers floating piston in measuring press. Measuring press is provided with floating piston having hollow shaft, ultrasonic linear displacement sensor for oil volume determination and electronic linear displacement sensor for gas volume determination. Circulation piston pump provides unidirectional oil circulation at controllable rate. Viscosimeter has bypass with shutoff valve. Single thermostating shell encloses all components of the plant.

EFFECT: increased accuracy of oil and gas volume and viscosity determination, decreased sample characteristic measurement time under reservoir conditions and, as a result, increased operational efficiency.

1 dwg

FIELD: oil and gas industry, particularly obtaining fluid samples or testing fluids in pipelines.

SUBSTANCE: device comprises pipeline, body made as connection pipe with hollow shaft and cock. Hollow shaft is fixedly connected to pipeline in air-tight manner and is made as connection pipe with beveled end and radial orifices facing liquid flow made in shaft side opposite to that provided with beveled end. Pipeline has restriction located downstream of the shaft. Another end of connection pipe is air-tightly connected to pipeline downstream of the restriction and located in decreased pressure zone. Connection pipe section defined by cock and the second end is provided with cylindrical case with piston, which may slide in axial direction with respect to the case. The case has discharge connection pipe arranged from cock side. The piston comprises valve providing liquid flow from the cock side. The cock is made as a cylinder with electromagnet and shaft air-tightly installed in the cylinder and sliding with respect to the cylinder in axial direction by means of electromagnet. Cylinder has outlet connection pipe and is communicated with discharge connection pipe. Both connection pipes are closed with shaft. The shaft has two annular grooves. The first groove may communicate connection pipe with cylinder to seal the connection pipe as shaft moves inside the cylinder. The second groove may communicate outlet and discharge connection pipes as shaft slides inside the cylinder.

EFFECT: increased sample taking quality.

1 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