System for controlling connections and feeding of electric current, oil well for extracting oil products (variants) and method for extracting oil product from oil well

FIELD: mining industry.

SUBSTANCE: system has first induction throttle, second induction throttle and controlled switch. Second induction throttle is positioned near second branch of pipeline structure. Controlled switch has two outputs. First switch output is electrically connected to pipeline structure on the side of induction throttles connection, where first and second branches of pipeline structure intersect. Second output of switch is electrically connected to pipeline structure on other side of at least one induction throttle. Pipeline structure can be positioned inside oil well, and can have casing string and operation tubing column. Also described is method for extracting oil products from oil well using said system.

EFFECT: higher efficiency.

4 cl, 10 dwg

 

The present invention relates to a system for controlled power and/or communication over a network of interconnected elements of the pipeline structure or metal patterns using individual managed switches and induction chokes, and more specifically to an oil production well and the method of controlling the operation of drilling wells, providing well managed switching circuit for supplying power and/or communication in the downhole device.

Prior art

There are several ways of placing operated valves, sensors and other devices in the well on a string of tubing in a borehole, but in all known devices commonly used electrical cable passing along the column tubing to supply power and communicate with devices and sensors. In practice, it is undesirable and difficult to use cable along the column tubing, combined with the column tubing or located in the ring between the tubing string and the casing string, as in such a system there is a number of failure mechanisms. Other means of communication inside the trunk of a borehole is described in U.S. patent No. 5493288, 5576703, 5574374, 5467083 and 5130706.

In patentese No. 6070608 described gas-lift valve, controlled from the surface and used in oil wells. The valve is excited electro-hydraulic, hydraulic and pneumatic-hydraulic way. The sensors transmit data on the state of the diaphragm of the flow meter and the critical pressure of the fluid in the control panel, located on the surface. Electricity is supplied to the downhole sensors and valves in the supply of electric power/signal to the valves/sensors, presented in the form of electric cables between the valve/sensor, located in the well, and the remote control on the surface. In U.S. patent No. 6070608 not specifically described or does not show the path of current from device positioned in the wellbore to the surface. The cable is depicted in the form of a standard cable, i.e. elongated protective tube placed in her individual wires. But such a standard electrical cables can cause trouble with the wiring at great depths, around bends in the curves of the wells, along with numerous bends well, with numerous lateral branches and/or in parallel arrangement with a spiral operational tubing column. Therefore, there is a need for a system and method of supplying power and communication signals in the downhole device without using a separate power supply required the integrity of the cable in the form of a pipe, filled wire and attached to the wall productive columns.

In U.S. patent No. 4839644 described method and system for wireless two-way communication casing in the wellbore. This system is a well toroidal antenna for supplying electromagnetic energy to the waveguide SO-fashion using the ring between the casing and tubing. Toroidal antenna uses electromagnetic coupling, which requires a non-conductive fluid such as purified crude oil, in the ring between the casing and the pipeline as a transmission medium, and a toroidal resonator and insulators in the wellhead. Therefore, the method and system described in U.S. patent No. 4839644 are expensive, there is a problem of leakage of saline into the casing and the problem of downhole two-way communication. Thus, there is a need for an improved system and method of supplying power and communication signals in the downhole device without requiring the presence of a non-conductive fluid in the ring between the casing and tubing column.

Other concepts downhole communication, such as pulse telemetry (U.S. patent No. 4648471 and 5887657)showed successful communication at low data rates, but are of limited use as Hemi communication require high speed data transfer or it is undesirable to have a complex downhole equipment for pulse telemetry in a borehole. Nevertheless, attempts were made to use other ways downhole communication, for example, U.S. patent No. 5467083, 4739325, 4578675, 5883516 and 4468665. Therefore, there is a need for a system and method of supplying power and communication signals in the downhole devices with higher data rates and with the available power to ensure the downhole device.

Therefore, significant improvement in the operation of oil wells will occur if the tubing column casing, the lower pipe casing and/or other conductors, installed in a borehole, can be used as guides, providing communication and power, for control and operation of downhole devices and sensors in the oil well.

The induction choke is used in conjunction with sensitive devices for protection from power surges and voltage. For example, most personal computers for such protection applies a choke of a particular type that is installed in a network wire. Such protective chokes work well for its purpose, but is not suitable for power circuit or connection.

Short and to the situation being inventions

The present invention is to remedy these disadvantages.

In accordance with one aspect of the present invention, the proposed system for controlled communication of the supply of electric power with the current, time-varying and flowing through a pipeline structure. The system comprises a first induction choke, the second induction choke, and a managed switch. The first induction choke is located around a portion of the first branch pipeline structure. Second induction choke is located around a portion of the second branch of the pipeline structure. Managed switch contains two conclusions. The first terminals of the switch is electrically connected to the piping structure at the side of the connection of the induction chokes. The first and second branch pipeline patterns intersect on the side of the connection of the induction chokes. The second of the terminals of the switch is electrically connected to the piping structure on the other side of at least one of the induction chokes.

In accordance with another aspect of the present invention, an oil well for production of oil products pipeline contains the structure and system control routing of communications and/or electrical power having a current changing in time, and p is oecause via pipeline structure. The pipeline structure is placed within the borehole. The system comprises a first induction choke, the second induction choke, and a managed switch. The first induction choke located about a first branch pipeline structure. A second induction choke located about a second branch of the pipeline structure. Managed switch contains two conclusions. The first terminals of the switch is electrically connected to the piping structure at the side of the connection of the induction chokes, where the first and second branch pipeline patterns intersect on the side of the connection of the induction chokes. The second of the terminals of the switch is electrically connected to the piping structure on the other side of at least one of the induction chokes.

In accordance with another aspect of the present invention, an oil well for production of oil contains casing borehole, operational tubing column, a power source, the first induction choke, the second induction choke, a managed switch and two downhole device. Casing drilling wells placed in geological formations, and operational tubing column placed inside the casing. The source of the IR power is on the surface. The power source is electrically connected with the outlet and adapted to the circuit for applying current, time-varying, in the booster casing and/or casing. The first induction choke located downhole about the first branch tubing of the column and/or the casing. A second induction choke located downhole about the second branch tubing of the column and/or the casing. A managed switch is located in the well and contains two conclusions. The first terminals of the switch is electrically connected with the tubing string and/or casing-side connection of the induction chokes. The first and second branches intersect on the side of the connection of the induction chokes. The second of the terminals of the switch is electrically connected with the tubing string and/or casing on the other side of the first induction choke, and/or the second induction choke. The first downhole device electrically connected with the first branch. Second downhole device electrically connected with the second branch.

In accordance with another aspect of the present invention, a method for extraction of oil from oil wells. The method comprises the following steps, the order of which may vary: using the pipeline structure, which is placed inside the borehole, using the source of electrical power located on the surface of the electrically associated with pipeline structure and adapted to output current, time-varying, use the first induction choke located about a first branch pipeline structure, use a second induction choke located about a second branch of the pipeline structure, use a managed switch with two output switch, and the first terminals of the switch is electrically connected to the piping structure at the side of the connection of the induction chokes, the first and second branch pipeline patterns intersect on the side of the connection of the induction choke, and the second of the terminals of the switch is electrically connected to pipeline structure on the other side of at least one of the induction chokes, use downhole device, which is electrically connected with the pipeline structure, serves current, time-varying, the piping structure from the power source, control the position controlled electric switch, a direct current varying in time, around at least one of the induction chokes in at least one of the first is about and the second branch pipeline structure using a controlled electric switch, direct current varying in time, through the downhole device which serves the electrical power to the downhole device in the extraction of oil from the power source through a pipeline structure and extracting oil from oil wells. If the second output of the switch is electrically connected to the first branch pipeline structure on the other side of the first induction choke, and a controlled switch further comprises a third output switch, the third output switch electrically connected with the second branch of the pipeline structure on the other side of the second induction choke. If the second output switch electrically connected with the first branch pipeline structure on the other side of the first induction choke, then optionally use the second controlled switch, which is placed between the pipeline structure-side connection of the second induction choke, and the second branch pipe structure on the other side of the second induction choke so that each of the electrically controlled switches were electrically connected in parallel and respectively to each of the induction chokes, control the switch position of the second controlled electrical switch.

T is thus, the present invention provides a system and method for switching and direction for the supply and/or communication network pipeline structure (for example, by a pump operating string and/or casing borehole). The present invention provides a system for power supply and communication, which allows for the mutual connection of each of the N input lines to any one or more of the M output lines, where "line" is mutually intersecting portions of the pipeline network structure. Removable and preconfigurable induction chokes provide such filing. Managed and independently addressable switches provide variables piping structures in the network.

One common characteristic of the present invention is the ability to connect power and/or communications from point to point, where the number of input lines (N) equals the number of output lines (M), i.e. M=n Chokes install around each "line", through which will not supply power and/or communication signals. When installing chokes the total number of N2-N(=N(N-1)) between the selected input-output connections, all power and communications is effectively blocked. The remaining N input-output connections are in parallel which is not installed induction chokes, do not prevent the transmission of power or information. Compound m which should be initiated by shunting or "short circuit" of the throttle using the addressable switch (for example, digital addressable switch). When it is desirable to have a partial transfer of power and communications across a grid of size N×N, you can set the chokes with a smaller mass or other magnetic properties, which are not completely prevent the transfer of power and communication signals.

Another common characteristic of the present invention is not blocking switching network, in which any input line (N) can be connected to multiple output lines (M), where the number of input lines (N) does not exceed the number of output lines (M). An extreme case occurs when N=1 and M are arbitrary numbers, thus defining a star or hub-and-spokes topology power and communications. Numerous chokes can be used for sampling the distribution and routing of power and information in any desired subset of the M output lines. If you want partial power supply and communication, you can use the choke with a smaller size and inductance. Regardless of the application, inductive chokes in selected positions provides a flexible, Preconfiguring the mechanism of supply and communication within the pipeline structure.

Brief description of drawings

Other objectives and advantages of the invention in the following detailed description with alcami on the accompanying drawings, on which:

figure 1 depicts the schema of the oil wells according to a preferred variant implementation of the present invention;

figure 2 depicts a simplified wiring diagram of the electric circuit formed by using a borehole according to the invention;

figa depicts a schematic top oil wells according to another preferred variant implementation of the present invention;

figv depicts a schematic top oil wells according to another preferred variant implementation of the present invention;

figure 4 depicts a diagram of another preferred variant implementation of the present invention;

figure 5 depicts a simplified wiring diagram of the electric circuit formed using borehole, shown in figure 4, according to the invention;

6 depicts a diagram of another preferred variant implementation of the present invention;

7 depicts a simplified wiring diagram of the electric circuit formed using borehole, shown in Fig.6, according to the invention;

Fig depicts a generalized scheme, with the main entrance, which can be divided into any number of outputs, according to the invention;

Fig.9 depicts Preconfiguring the th routing system power transmission and communication according to the invention.

A detailed description of the preferred embodiment variants of the invention

"Pipeline structure, which is used in this application, may be a single pipe, tubing column casing borehole, pump rod, a series of interconnected tubes, drill rods, rails, girders, lattice through a farm, support, idler or lateral extension drill hole, a network of interconnected pipes or other similar structures known in the art. In a preferred embodiment of the invention, a duct structure comprises a tubular, metallic, electrically conductive pipe or tubing column, but the invention is not limited to this. According to the present invention at least part of the pipeline structure must be electrically conductive. Such conductive part may be a pipeline structure (for example, steel pipes, copper pipes) or placed in the longitudinal direction of the conductive part, combined with the electroconductive part. In other words, the conductive piping structure is a structure that provides a current path from the first part, where the power source is electrically connected with the second part, where the device and/or circuit reverse current electricity is automatic linked. The pipeline structure is a well-known round metal tubing column, but the geometry of the cross-section of the pipeline structure or any part thereof may vary in shape (e.g. round, rectangular, square, oval) and the size (e.g. length, diameter, wall thickness) along any part of the pipeline structure. Therefore, the pipeline structure must be electrically conductive part from the first part of the pipeline structure to the second part of the pipeline structure in which the first part is separated from the second portion along the pipeline structure.

The terms "first" and "second part" mean in the General part, section or area of the pipeline structure, which can be positioned at any selected location along the pipeline structure and which may or may not cover the closest ends of the pipeline structure.

The term "modem" is used in the description for any communication device for transmitting and/or receiving electrical communication signals through an electrical conductor (e.g. metal). Therefore, the term "modem" is not limited acronym for modulator device, which converts the voice or data signal to a form suitable for transmission)/demodulator device, which restores the original the capacity signal, which was modulated high frequency carrier). In addition, the term "modem" is not restricted to the well-known computer modems, which convert digital signals to analog signals and Vice versa (for example, for the transmission of digital information signals on the analog public switched telephone network of General use). If the sensor gives the measurement data in the analog format, they can only modulate (e.g., using modulation with expansion of the range) and to transmit, and therefore do not need to perform analog-to-digital conversion. Another example is the relay/slave modem or communication device, which only needs to identify, filter, amplify and/or to relay the received signal.

The term "valve" refers to any device that performs the function of adjusting the flow of fluid. Examples of valves include, but are not limited to, bellows-type gas-lift valves and controllable gas-lift valves, each of which can be used to regulate the flow of carrier gas in the column tubing drilling wells. Internal valves can greatly differ, and in the present application is not limited to valves of any particular configuration, the valve acts as a flow control. Some who were from different types of mechanisms regulate the flow include ball valve, needle valve, gate valve and valve cage. How to install valves discussed in this application, can vary within wide limits.

The term "valve with electric control"usually refers to the "valve" (as described above), which you can open, close, adjust, alter, or throttle continuously in response to an electrical control signal (e.g. a signal from a computer on the surface or downhole module electronic controller). The mechanism that actually changes the state of the valve can include an electric motor, electrical motor, electrical solenoid, an electric switch, a hydraulic actuator, managed by at least one electric motor, electric motor, electric switch, electric solenoid, or combinations thereof, pneumatic actuator, controlled by at least one electric motor, electric motor, electric switch, electric solenoid, or combinations thereof, or the device to reject a spring in combination with at least one electric motor, electric motor, electric switch, electric solenoid, or combinations thereof. "Valve with electric control can include a sensor state is feedback to supply a feedback signal, corresponding to the actual valve position.

The term "sensor" refers to any device that detects, identifies, monitors, records or registers the absolute value or change the value of a physical quantity. The sensor can be used to measure the values of these physical quantities like temperature, pressure, (absolute and differential), the flow velocity, seismic data, acoustic data, pH, salinity levels, valve positions, or almost any other physical data.

The phrase "on the surface" refers to the location from Land surface to a depth of about fifty feet or more. In other words, the phrase "on the surface" does not necessarily mean the location on the ground level, and is used in a broader sense to indicate the location, which is usually readily available or convenient to the wellhead, where people. For example, the surface may indicate on the table in the workshop, which is located on the earth's surface on the platform of the drill hole, at the bottom of the ocean or lake, deep platform of an oil rig or on the 100th floor of the building. In addition, the term "surface" can be used as an adjective to define the location of the item or area that RA is put "on the surface". For example, the phrase "surface computer" means a computer located "on the surface".

The term "well" refers to the location at a depth of about fifty feet or below. In other words, the term "wellbore" refers to a location that is usually difficult or inconvenient to reach from the wellhead, working people. For example, in oil well mean plot in or near underground oil operational area, regardless of whether the operational area available vertically, horizontally, sideways, or at any other angle between them. In addition, the term "wellbore" is used as an adjective, describing the location of the item or area. For example, the downhole device in a borehole indicates that the device is "in the hole", and not "on the surface".

The term "wireless" means the absence of an electric wire from the surface to the downhole device. The use of the pipeline structure of the borehole (for example, tubing of the column and/or the casing) as a conductor is considered "wireless".

Figure 1 shows a diagram of a gas-lift drilling oil wells 20, according to a preferred variant implementation of the present invention. Borehole 20 keypanel borehole with a lateral branch 26. Borehole 20 may contain four sections - section 26 of the side branch, section 27 of the connection, the upper section 28 and a lower main section 29 of the wellbore. The lateral branch 26 connected to the main wellbore section 27 of the connection. The upper section 28 is above the section 27 to the surface. Borehole 20 has a casing 30, is placed inside the bore and passing through the geologic formation 32 in the operational zone (not shown) next to the location. Operational tubing column 40 is held within the casing borehole and is used to redirect fluid (e.g. oil, gas) from the downhole location to the surface during mining. Packers 42 are located in the casing 30 and tubing of the column 40. Packers 42-known and hydraulically isolate sections 26-29 borehole above operational areas, allowing you to introduce gas under pressure into the ring 44 between the casing 30 and the booster casing 40. During operation of the gas lift gas under pressure is injected on the surface of the earth in the ring 44 for further input in the tubing column 40 to perform the lift for fluids that are in it. Oil production well 20 is similar in design to the known drilling well.

The electrical circuit is brasovan elements borehole 20 and is used to supply power and/or communication signals in the downhole device 50. Computer system 52 provides power and/or communication signals to the surface. Computer system 52 includes a source 54 of the power supply and the main modem 56, but the elements of the surface equipment and the configuration can be changed. The source 54 of the power supply is designed to supply current, time-varying, which is preferably alternating current, but it can also be time-varying direct current. The communication signal supplied by computer system 52 is a signal spread spectrum, but alternatively, you can use other types of modulation or predistortion. The first output 61 of the computer, computer system 52 is electrically connected to the booster casing 40 on the surface. The first output 61 of the computer passes through the suspension 64 in an isolated seal 65 and is electrically isolated from the suspension 64 passing through the seal 65. The second output 62 of the computer, computer system 52 is electrically connected to the casing 30 of the borehole to the surface.

Tubing column 40 and casing 30 in the scheme borehole perform the role of electrical conductors. In a preferred embodiment, (1) tubing column 40 acts as a structure for transmitting electrical energy and/or signalises between the computer system 52 on the surface and the downhole device 50. Packers 42 and casing 30 are used as the return circuit. Isolated coupling 68 for tubing placed in the wellhead below the suspension 64 to provide electrical insulation tubing 40 from the suspension 64 and the casing 30 on the surface. The first output 61 of the computer is electrically connected to the booster casing 40 below isolated coupling 68 for tubing.

The induction choke 70 is located in the well about tubing of the column 40. Induction choke 70 is made in a ring shape and is concentrically arranged around the tubing of the column 40. Each induction choke 70 contains a ferromagnetic material and is not powered. Each induction choke 70 performs the function based on its size (mass), geometry and magnetic properties, and spatial location relative to the tubing 40. In some embodiments, the implement (not shown) each or both of the induction choke 70 is located around the casing 30.

Each downhole device 50 has two electric contacts 71, 72. The first conclusions 71 is electrically connected to the booster casing 40 on the side 81 of the source of the corresponding induction choke 70. The second is C conclusions 72 device is electrically connected to the booster casing 40 on the side 82 of the return circuit of the corresponding induction choke 70. Each packer 42 provides electrical connection between the pump-compressor pipe 40 and the casing 30 in the well. However, the tubing 40 and casing 30 can be electrically connected in the well using a conductive fluid (not shown) in the ring 44 above the packer 42 or otherwise. The fluid in the ring 44 above each packer 42 preferably have low or zero conductivity, but in practice it is impossible to prevent.

Other alternative ways of forming an electrical circuit with the use of the pipeline structure of the borehole and at least one induction choke is described in the related applications. The related applications describe methods based on the use of the casing, and not the tubing of the column, to transfer power from the surface to the downhole device.

Preferably, all elements of the downhole device 50 were in the same sealed collector tubing columns in a single module for easy operation and installation, as well as to protect the items from exposure to the environment. However, in other embodiments of the invention the elements of the downhole device 50 can be placed separately (i.e. not in the manifold tubing columns) or United.

Items skvazhina the device 50 may vary for other embodiments of the invention. For example, the downhole device 50 may include an electric servo motor, the other motor, sensor, or transducer, transducers, electrically controlled device discharge indicator, electrically controlled device discharge of chemicals, a reservoir for storage of chemicals or indicator, valve, electrically operated, relay modem module communication and control, logic, computer system, memory, microprocessor, power transformer, module or device for storing energy, an electrically driven hydraulic pump and/or actuator, an electrically driven air pump and/or actuator, or any combination thereof. Each downhole device 50 includes an electrically controlled gas lift valve (not shown) and a module for storing energy (not shown).

Managed individually addressable electrical shunt switch 90 are sequentially electrically connected to the first circuit output 71 of each of the devices 50. Each switch 90 can be controlled by means of a computer system 52 from the surface, the downhole control module switch (not shown), another downhole device 50 corresponding to the downhole device 50, the control circuit is located inside the switch, or any of them is combinatii. For example, each algorithm switching control can be based on time-series measured with schema synchronization and synchronized or coordinated with other switches. The switch 90 can be analog or digital. The movement of the working body of each of the switches 90 can be implemented in various ways known in the art, electrical, mechanical, hydraulic or pneumatic. Energy for control and switching of each switch 90 can only come from stored energy from the battery of the device from the surface (for example, from a source 54 power) through tubing column 40 and/or casing 30, from another downhole device 50 via a separate wire (not shown), the tubing column 40 and/or casing 30, or any combination thereof. Each switch 90 can be independently rasmijoti or shorted preferably using a computer system 52, and each switch 90 is powered by a battery that is periodically recharged with surface source 54 supply through tubing column 40 and/or the casing 30.

Figure 2 shows a simplified circuit diagram illustrating the electrical circuit in a borehole 20. In the process, Pete is s and/or communication signals served using a computer system 52 in the tubing column 40, located near the surface of the lower insulating couplings 68 for tubing, through the first output 61 of the computer. The flow of current, time-varying, from tubing of the column 40 in the casing 30 (and to the second output 62 of the computer) through the suspension 64 prevent the insulators 69 insulating coupling 68 for tubing. However, the current, time-varying flows freely in the bore along the tubing of the column 40 to a meeting with an induction choke 70. Each induction choke 70 has a large inductance, which prevents leakage greater part of the current through the booster casing 40 in each induction choke 70. Therefore, between the pump and compressor casing 40 and the casing 30 there is a potential difference due to the induction choke 70. As the downhole device 50 are electrically connected perpendicularly voltage potentials, which arise due to the choke 70, a large part of the current in the booster casing 40 and is not lost along the way, through the downhole device 50 and thus provides power and/or communication with downhole devices 50. Shunt switches 90 determines which of the downhole device 50 receives supply the e and/or communication signals, filed with the surface. If the switch 90 of the lower main section 29 of the borehole is closed and the switch 90 of the side section 26 is open, the device 50 side sections 26 are not included in the electrical circuit, and a large part of the current will be directed through the device 50 lower main section 29 of the borehole. If the switch 90 of the lower main section 29 of the borehole is open and the switch 90 of the side section 26 is closed, the device 50 lower main section 29 of the borehole is not included in an electric circuit, and a large part of the current will be directed through the device 50 side sections 26. And if both switch 90 closed, the downhole device 50 are arranged in parallel, and the current will pass through them. After passing current through one or both of the downhole device 50 current returns back to the computer system 52 through the packer(s) 42, the casing 30 and the second terminal 62 of the computer. When the current is alternating current, the direction of flow of this current through the borehole 20 will change to the opposite and go through the same path.

If other packers or centralizers (not shown) is inserted between the insulating coupling 68 for tubing and packer 42, they can be entered into the composition of the electrical insulator to prevent short circuit is between the pump and compressor casing 40 and the casing 30. Suitable centralizers may consist of integrally molded or machined plastic or a type of a spring is provided, if necessary, the respective insulating elements. Electrical isolation for more packers or centralizers can be done in other ways obvious to a person.

An alternative (or addition) for insulating the coupling 68 for tubing may serve as another induction choke 168 (figa), which can be placed around tubing 40 columns above the electrical connection to the first output 61 of the computer in the pump-compressor pipe 40, and/or suspension 64, which can be used stand-alone suspension 268 (pigv)with insulators 269 for electrical insulation tubing 40 of the casing 30. Thus, the upper part of the borehole can be modified to form other possible options for the implementation.

The configuration of the switches and their location can be changed. For example, in borehole 20 (1) you can add a section 27 of the connection, the lower main section 29 of the barrel bore hole and the side section 26 branches (figure 4). Figure 4 switches 90 with appropriate induction chokes 100 are located in section 27 connect the tion, and the downhole device 50 with the corresponding induction choke 70 is located farther in the hole inside the bottom of the main section 29 of the barrel bore hole and the side sections 26. Figure 5 shows a simplified circuit diagram illustrating the electrical circuit formed when in the borehole 20 (1) added sections 26, 27 and 29 (figure 4).

In another example, in borehole 20 (figure 1 and/or 4) add section 27 of the compound (6). Figure 6 shows one switch 90 to the feed direction and/or links at the bottom of the main section 29 of the borehole or in the side section 26, but not in both. In an alternative embodiment, the section 27 of the compound (6) may contain two switches in a single housing (not shown) or the switch on the three directions (not shown), and any variant adapted to supply power and/or communication in the lower main section 29 of the borehole and/or in the side section 26. Figure 7 shows a simplified circuit diagram of the electric circuit for the case when section 27 of the compound (6) is introduced into the bore hole 20 (Fig 1) with a lower main section 29 of the borehole and a lateral section 26 (figure 4).

On Fig shows a diagram illustrating a generalized configuration, which has a main input signal 110 (e.g., computer system 52, which can be divided into either the number (Y) outputs 112. The configuration of the switch may consider only one output at a given time (6), or any combination of outputs in a given time (figure 4). Thus, one main input 110 can be divided into Y outputs 112. But on the other hand, you can also use any number X main inputs 110.

Figure 9 depicts another diagram that shows how you can perform Preconfiguring system 120 routing power transmission and connection to the electric circuit borehole formed by the pipeline structure of the borehole. The system 120 includes individually controllable switches 90 and allows the connection of each of the N input lines 122 with any one or more of the M output "lines" 124, where "line" is part of the pipeline structure of the borehole (e.g., operational tubing of the column 40 and/or the casing 30).

In the field of telecommunications, a similar system for telephone lines is often called the "coordinate switch". A typical electrical switch is a matrix of intersecting conductors of the input lines and output "columns" with a mechanical or solid state switches located at each node of orthogonal rows and columns. The switch in any particular node can be a unique way to address and in which BBEdit for to complete the connection between intersecting the input lines and output lines. When the excitation of one and only one switch along one input line to the "line" reach a unique connection with the output "column". A loop can be used to transmit electrical energy or electrical signals from the source connected to the input line, the destination is connected to the "output" line. In telephony, matrix switches are used to route calls between a given source location and the specific location of the receiver.

The electrical circuit (figure 9) depicts the network of intersecting columns tubing and/or sections of the casing borehole (network formed by pipelines borehole)having N input lines 122 and M output lines 124. It is assumed that each of the N input lines 122 connected to each of the M output lines 124 through induction inductor 100 and one or more shunt switches 90, is placed in each node 127. For example, each node 127 can be used independently addressable electronic or mechanical switching bridge (not shown). Diagram of the controller (not shown) can provide a complete connection for power supply and/or communication by activitati is electronic or mechanical switches 90 and "short circuit" or bypass appropriate induction choke 100. The switch 90 can be configured so as to be normally open or normally closed in the "inactive" state. That is normal unexcited state of each switch 90 may be "off" (open) or "on" (closed). In a preferred embodiment of the invention it is assumed that all switches are open. With all the hub switch 90 in its natural open position of the choke 100, installed near the line of nodes 127, block some, most or all of the transmission power and/or communication output lines 124 as long as the switch 90 will not be activated for a specific node 127.

For example, if AC power is supplied to the input line A1 figure 9, the induction choke 100 prevents the passage of electric current in the output lines B1-BM. However, if the electrical signal passes to the control circuit bypass, located parallel to the node "A1 B2" of the throttle, the corresponding electronic switch 90 is closed and the choke 100 is shunted. Therefore, alternating current and unrestricted communication signals can pass from the input lines A1 to the output line B2. Additional electrical control signal can be carried out in the control circuit shunting, whic is its parallel to the node A2 in V7" throttle (not shown), controlling the switch 90 to open and complete an additional electrical connection between the input line A2 and the output line B7. Thus, one possible application of the present invention is the formation of communication from point to point and/or the relationship between a number of input lines 122 and a number of output lines 124 in the network formed by pipelines drilling wells.

In another example, if the power is AC current is applied to the input lines A1-AN (Fig.9), at the initial stage of the induction chokes 100 impede the passage of the electric current in the output lines B1-BM. But if the electrical control signals are received in the control circuit of the bypass, located at each node of the inductor to B1 (i.e. A1 to B1, A2 to B1,...AN in B1), the corresponding switch 90 will close, and the corresponding choke 100 will be bypassed. Therefore, all inputs A1-AN are combined in the output B1. Therefore, the present invention can be performed fully Preconfiguring system 120 network matrix switches by installing chokes 100 total number of M*N and the switches 90 to 127 nodes between N input lines 122 and M output lines 124.

When it is desirable to have a partial transfer of power and/or communication in the grid 120 "M by N" (Fig.9) for one or more nodes 127 or the La all nodes 127, you can install smaller chokes where it is desirable that the power and/or communication is not completely lost in the nodes 127, having a smaller chokes. A smaller inductor can be physically smaller (i.e. to have less weight in relation to other chokes 100) and/or may have different magnetic properties (i.e. contain less ferromagnetic material). In other words, the smaller the choke is a choke, which provides a lower effective impedance for alternating current flowing through the pipelines borehole. Therefore, the limited (i.e., reduced) the amount of energy you apply to equipment connected to a particular output line 124, to control, for example, in the case of a regulating valve in the interval when the corresponding shunt switch 90 throttle is open or "off" position. If the full Board should be sent to the equipment connected to this output line 124 for other purposes, for example, to open the control valve of the interval, the corresponding shunt switch 90 throttle can be closed or "on". Therefore, the present invention is made of the method and the device for switching and direction of the voltage and/or communication network 40 columns tubing and/or sections obsa the Noah columns 30, i.e. pipeline structures borehole.

The present invention can be applied to any type of wells, such as wells for exploration, injection wells, production wells, where meals in the well it is necessary for electronic or electrical equipment. The present invention can also be applied to other types of wells, such as water wells.

The system can be used many times in one oil well having one or more productive areas or in an oil well having multiple lateral or horizontal branches. Since the configuration of the borehole depends on the location of natural geological formations and location of productive zones, the system according to the invention may vary depending on the geological formation or requirements for voltage supply and/or installation of communication in a borehole.

The present invention can also be applied in other areas where the pipeline structure is used for the formation of an electric circuit as electrical conductors and induction choke. In addition, the present invention can be used where structural elements of the system or elements of transmission fluid is used for the formation of an electric circuit inside of the system p the power of the induction chokes. For example, the present invention can be used for controlled power and/or communication through the existing network of pipes of a sprinkler system in the building, an existing network of metal structural elements in the building, an existing network of metal structural elements for oil platforms, the existing pipeline network, for example a water network, an existing network of structural elements of the farm bridge and an existing network of metal rebar reinforced concrete, for example in the road or a dam.

1. The control system is connected and the electric voltage is fed with current through a pipeline structure, time-varying, containing the first induction choke located about a first branch pipeline structure, the second induction choke located about a second branch of the pipeline structure, a managed switch with two output, and the first terminals of the switch is electrically connected to the piping structure at the side of the connection of the induction chokes, where the first and second branch pipeline structure, and the second of the terminals of the switch is electrically connected to the piping structure on the other side of at least one of the induction chokes.

2. The system according to claim 1, great is the rpm die, the second output of the switch is electrically connected to the first branch of the pipeline structure on the other side of the first induction choke, and a controlled switch further comprises a third output that is electrically connected to the second branch of the pipeline structure on the other side of the second induction choke.

3. The system according to claim 1, characterized in that the second output of the switch is electrically connected to the first branch of the pipeline structure on the other side of the first induction choke, and the system further comprises a second controlled switch that is connected between the pipeline structure-side connection of the induction chokes and the second branch pipe structure on the other side of the second induction choke so that each of the controllable switches connected in parallel to each of the induction chokes.

4. The system according to claim 1, characterized in that the second output of the switch is electrically connected to the piping structure through the downhole device.

5. The system according to claim 4, wherein the downhole device comprises an electronic device.

6. The system according to claim 4, wherein the downhole device comprises a device connected to the power source.

7. The system according to claim 4, characterized the eat, what the downhole device comprises a modem.

8. The system according to claim 1, characterized in that the first output of the switch is electrically connected to the piping structure through the downhole device.

9. The system of claim 8, wherein the downhole device comprises an electronic device.

10. The system of claim 8, wherein the downhole device comprises a device connected to the power source.

11. The system of claim 8, wherein the downhole device comprises a modem.

12. The system according to claim 1, characterized in that the pipeline structure is part of the borehole.

13. The system of item 12, wherein the borehole is operational oil well.

14. Oil well for production of oil products containing pipeline structure placed inside a borehole, the system for managing and applying an electric voltage with current, time-varying, via pipeline structure, the system contains a first induction choke located about a first branch pipeline structure, the second induction choke located about a second branch of the pipeline structure, a managed switch with two output, and the first terminals of the switch is electrically connected to trubor the water structure on the side of the connection of the induction chokes, where the first and second branch pipeline structure, and the second of the terminals of the switch is electrically connected to the piping structure on the other side of at least one of the induction chokes.

15. Oil well through 14, characterized in that the second output of the switch is electrically connected to the first branch of the pipeline structure on the other side of the first induction choke, and a controlled switch further comprises a third output that is electrically connected with the second branch of the pipeline structure on the other side of the second induction choke.

16. Oil well on 15, characterized in that it further includes a third induction choke located about a portion of the first branch pipeline structure and further into the borehole relative to the first induction choke, fourth induction choke located about a second branch of the pipeline structure and further in the hole relative to the second induction choke, the first downhole device, electrically connected with the first branch pipeline structure from one side of the third induction choke to the other side of the third induction choke so that the first downhole device connected in parallel to the third is the induction choke, second downhole device, electrically connected with the second branch of the pipeline structure from one side of the fourth induction choke to the other side of the fourth induction choke so that the second downhole device connected in parallel to the fourth induction choke.

17. Oil well according to item 16, wherein the at least one downhole device contains electronic device.

18. Oil well according to item 16, characterized in that at least one of the downhole device includes a device connected to a power source.

19. Oil well according to item 16, characterized in that at least one of the downhole device includes a modem.

20. Oil well through 14, characterized in that the second output of the switch is electrically connected to the first branch of the pipeline structure on the other side of the first induction choke, and the well further comprises a second controlled switch that is connected between the pipeline structure-side connection of the second induction choke, and the second branch pipe structure on the other side of the second induction choke so that each of the electrically controlled switches connected in parallel to each of the induction chokes.

21. Aptana well according to claim 20, characterized in that it further includes a third induction choke located about a first branch pipeline structure at a distance relative to the first induction choke, fourth induction choke located about a second branch of the pipeline structure at a distance relative to the second induction choke, the first downhole device, electrically connected with the first branch pipeline structure from one side of the third induction choke to the other side of the third induction choke so that the first downhole device connected in parallel to the third induction choke, and the second downhole device, electrically connected with the second branch of the pipeline structure from one side of the fourth induction choke to the other side of the fourth induction choke so that the second downhole device connected in parallel to the fourth induction choke.

22. Oil well according to item 21, wherein the at least one downhole device contains electronic device.

23. Oil well according to item 21, wherein at least one of the downhole device includes a device connected to a power source.

24. Oil well according to item 21, characterized those who, that at least one of the downhole device includes a modem.

25. Oil well through 14, characterized in that the second output terminal is electrically connected to the piping structure through the downhole device.

26. Oil well on A.25, wherein the downhole device comprises an electronic device.

27. Oil well on A.25, wherein the downhole device comprises a device connected to the power source.

28. Oil well on A.25, wherein the downhole device comprises a modem.

29. Oil well through 14, characterized in that the first output of the switch is electrically connected to the piping structure through the downhole device.

30. Oil well according to clause 29, wherein the downhole device comprises an electronic device.

31. Oil well according to clause 29, wherein the downhole device comprises a device connected to the power source.

32. Oil well according to clause 29, wherein the downhole device comprises a modem.

33. Oil well according to 14, wherein said piping structure comprises at least a part of the production tubing string.

34. Oil well through 14, characterized in that the pipeline structure contains less than the least part of the casing drilling wells.

35. Oil well for production of oil containing casing borehole, located in geological formations, operational tubing column placed inside a casing, a power source located on the surface, electrically connected with the source and adapted to supply current, time-varying at least one of the tubing of the column and the casing, the first induction choke located downhole about the first branch at least one of the tubing of the column and the casing, a second induction choke located downhole about the second branch of the at least one from tubing of the column and the casing, a managed switch with two output switch, with the first pin of the switch is electrically connected to at least one of the tubing of the column and the casing-side connection of the induction chokes, and first and second branches intersect on the side of the connection of the induction chokes, the second terminals of the switch is electrically connected to at least one of the tubing of the column and the casing on the other side of at least one of the induction chokes, PE is the first downhole device, connected to the first branch, the second downhole device, connected to the second branch.

36. The method of extraction of oil from oil wells, which consists in the fact that the use of the pipeline structure, which is placed inside the drill hole and use the electric power source, which is located on the surface, connected to the pipeline structure and adapted to supply current, time-varying, use the first induction choke located about a first branch pipeline structure, use a second induction choke located about a second branch of the pipeline structure, use a managed switch that has only two pins, and the first terminals of the switch is electrically connected to the piping structure at the side of the connection of the induction chokes, where the first and the second branch of the pipeline structure intersect on the side of the connection of the induction choke, and the second of the terminals of the switch is electrically connected to the piping structure on the other side of at least one of the induction chokes, use downhole device is connected to the pipeline structure, serves current, time-varying, the piping structure from the source of the power, control the position controlled electric switch, a direct current varying in time, in at least one of the induction chokes in at least one of the first and second branches of the pipeline structure using a controlled electric switch, a direct current varying in time, through the downhole device which serves the electrical power to the downhole device during operation of the oil via pipeline structure from power source and perform the extraction of oil from drilling wells.

37. The method according to p, characterized in that the second output of the switch is electrically connected to the first branch of the pipeline structure on the other side of the first induction choke, with a managed switch further comprises a third output, which is connected with the second branch of the pipeline structure on the other side of the second induction choke.

38. The method according to p, characterized in that the second output of the switch is electrically connected to the first branch of the pipeline structure on the other side of the first induction choke, the method further use of the second controlled switch that is connected between the pipeline structure-side connection of the second induction is of Rossel and the second branch pipe structure on the other side of the second induction choke so, each of the electrically controlled switches connected via pipeline structure in parallel to each of the induction chokes, control the switch position of the second controlled electrical switch.



 

Same patents:

FIELD: oil industry.

SUBSTANCE: at least one acoustic dynamic is mounted immediately on product pipe in oil well and acoustic characteristic of flowing environment flow is determined in product pipe. It is sent into surface controller, using product pipe. Using surface controller flowing substance flowing mode is determined, on basis of which working parameters of oil well are adjusted. Working parameters of oil well can be adjusted to detect Taylor mode of flow. For adjustment of working parameters throttle is used and/or controlled valve of oil well, controlling amount of gas, forces into product pipe. For determining mode of flow of flowing environment artificial neuron net can be used. It is possible is provide energy for acoustic sensor through product pipe. It is possible to determine additional physical characteristics of flowing substance, for example pressure and temperature.

EFFECT: higher efficiency.

3 cl, 22 dwg

FIELD: oil producing industry; pumping facilities.

SUBSTANCE: according to proposed method jet pump with stepped through channel in its housing and packer with through channel and complex logging device are lowered into well on tubing string. Logging device is installed under packer on tubing string. Perforated section is made on tubing string from side of its lower end. In process of lowering, using logging device, background values of physical parameters of producing formations are recorded, and then packer is released. Packer is installed higher than producing formations under surveying, and complex logging device is installed in zone of producing formations. Then depression insert is installed in stepped through channel of jet pump housing to separate tubing string, and working liquid medium is fed into nozzle of jet pump, thus building different value depressions in underpacker space of well. At each value of depression, well production rate is measured and then, with jet pump operating, complex logging device is moved along producing formations by displacing tubing string without depacking of packer and geophysical parameters of producing formations are recorded. After completion of surveying, depacking of packer and lifting of tubing string with jet pump and logging device to surface is done.

EFFECT: provision of intensification of surveying, testing and preparation of wells, mainly, horizontal and highly slanted wells, optimization of functions of packer and improved reliability of jet plant.

1 dwg

FIELD: oil producing industry; pumping facilities.

SUBSTANCE: proposed well jet plant contains packer and jet pump installed on tubing. Pump is provided with nozzle and mixing chamber with diffuser installed in housing, and stepped through channel is made. Possibility is provided for fitting functional inserts in through channel, for instance, for recording formation pressure built-up curves, and self-contained logging complex is installed on tubing lower than packer for checking physical values, for instance, specific electric resistance of rocks. Jet pump is arranged in casing over producing formation of well. Ring is arranged on tubing lower than packer to center packer in casing. Packer is made of elastic material in form of open-top cup with cone-shaped side wall. Bottom of cup is hermetically secured on tubing, and packer, in its position before removing, has the following dimensions: maximum outer diameter of packer side wall D2 is 0.75-0.99 of inner diameter D1 of casing; length L of packer is from 0.5 to 3 diameters D4 of packer cup bottom; maximum inner diameter D3 of side wall of packer cup is 0.6-0.96 of maximum outer diameter D2of packer cup; and outer diameter D5 of centering ring is 0.8-1.05 of diameter D4 of packer cup bottom.

EFFECT: intensification of surveying and testing of walls with open and cased holes, mainly crooked and horizontal holes, optimization of sizes of packer operating together with jet pump and self-contained logging complex, improved reliability of well jet plant.

2 cl, 1 dwg

FIELD: oil producing industry; pumping facilities.

SUBSTANCE: method includes lowering of tubing with packer and support into well. Support is provided with bypass ports and seat. Then releasing of packer is carried out. Equipment is fitted on smooth flexible pipe on the ground. For this purpose lower end of flexible pipe is first passed through channel of sealing unit for displacing flexible pipe relative to sealing unit, and then pipe end is passed through stepped through channel and pumped out medium supply channel in jet pump housing, after which end piece is connected to lower end of smooth flexible pipe and instrument for surveying or treatment of producing formation is connected to lower end of flexible pipe, for instance, logging device or perforator and then sealing unit is arranged in stepped through channel of jet pump and flexible pipe with jet pump and instrument for surveyor treatment of producing formation is lowered through tubing into well. When jet pump reaches support, jet pump is fitted in seat in support after which smooth flexible pipe is lowered until instrument for surveying or treatment of producing formation reaches zone of surveying or treatment of producing formation. In process of lowering of smooth flexible pipe, recording of background values of physical parameters of rocks, for instance, temperature patterns, is carried out.

EFFECT: optimization of preparation of jet plant for operation, increased of jet plant at surveying and treatment of crooked and horizontal wells with open or cased hole.

2 cl, 1 dwg

FIELD: well drilling technologies.

SUBSTANCE: method includes cutting a special conic thread, which is made with triangular profile with rounded corners, at sleeve and nipple portions of electric separator, sand-stream treatment is performed and also grease is removed from parts screwed together. After that a sub-layer is applied to increase adhesive metal properties. Composition dielectric material is applied to threaded connection of nipple portion, after that thread shape is altered by this material, then adhesive is applied to screwed surfaces of threads and sleeve and nipple portions of electric separator are screwed together. After that a layer of dielectric substance is applied along outer surface of subs. Inside the electric separator a dielectric insert is mounted or dielectric film is applied by pressing method with use of press-form. Dielectric film is applied on outer surface of electric separator by forming method under pressure with use of press-form or of composition dielectric material by winding method.

EFFECT: higher durability and reliability.

1 dwg, 1 ex

The invention relates to a field Geophysics and is intended to measure downhole parameters during drilling of directional and horizontal wells in the shielding layers with high conductivity, for example, in salt formations

The invention relates to the field of drilling and can be used in geophysical and technological research wells in process of drilling

The invention relates to the technical equipment ensure drilling for oil and gas and is specifically designed to supply electric power to the downhole equipment

FIELD: oil industry.

SUBSTANCE: at least one acoustic dynamic is mounted immediately on product pipe in oil well and acoustic characteristic of flowing environment flow is determined in product pipe. It is sent into surface controller, using product pipe. Using surface controller flowing substance flowing mode is determined, on basis of which working parameters of oil well are adjusted. Working parameters of oil well can be adjusted to detect Taylor mode of flow. For adjustment of working parameters throttle is used and/or controlled valve of oil well, controlling amount of gas, forces into product pipe. For determining mode of flow of flowing environment artificial neuron net can be used. It is possible is provide energy for acoustic sensor through product pipe. It is possible to determine additional physical characteristics of flowing substance, for example pressure and temperature.

EFFECT: higher efficiency.

3 cl, 22 dwg

FIELD: oil and gas industry.

SUBSTANCE: method includes serial pumping into well of buffer, blocking and pressing liquid, blocking liquid contains hydrocarbon base, acyclic acid, caustic soda and mineral filler with following relation of components in percents of mass: hydrocarbon base 41-72, acyclic acid 6.1-14.4, caustic soda 4.9-13.0, mineral filler the rest. Hydrocarbon base of blocking liquid is oil or oil processing products. As mineral filler blocking liquid has calcium carbonate with diameter of particles no less than 2 micrometers.

EFFECT: higher efficiency, simplified maintenance, simplified construction.

3 cl, 1 ex

FIELD: oil and gas production.

SUBSTANCE: water-based composition that can be used for killing of well during pullout of hole and well remedial work as well as for temporary abandonment of well contains, wt %: carboxymethylcellulose3.5-4.5, sodium hydroxide1.5-2.0, copper sulfate 0.3-0.4, and methanol 4.0-16.0.

EFFECT: improved rheological properties of composition and increased lifetime of formed gels.

1 tbl

FIELD: oil and gas industry.

SUBSTANCE: method includes preparation of technological liquid - water solution of sylvinite ore mixture with chlorine calcium by solving a mixture of components in hot fresh technical water, drained from oil and water preparation plants or bed water. During solution of sylvinite ore mixture with chlorine calcium in bed water the latter is drained from the well at temperature 60-90°C. Technological liquid is produced with solution density 1.23-1.37 t/m3. Then prepared technological liquid is fed into well shaft a bit lower, oppositely to zone and above ceiling of productive bed with forming of hydraulic column above the latter. Then well shaft to the mouth is filled with water. Value of technological liquid hydraulic column of high density on basis of said mixture, fed into well shaft above ceiling of productive column of technological liquid is taken in amount, necessary and enough from well stopping conditions.

EFFECT: higher efficiency.

6 cl, 1 ex

FIELD: oil extractive industry.

SUBSTANCE: method includes mounting compressor pump in such a way, that input aperture of tail piece was positioned below bed sole. Prior to that water cone in face-adjacent zone is destroyed by draining water through tail piece, connected to lower suck-in valve of compressor pump cylinder, and along behind-pipe space through side suck-in valve of compressor pump cylinder. In case of increase of hydrocarbon contained in drained liquid beginning of water cone destruction is assumed. Draining is continued until destruction of emulsion in water cone, formed in non-homogenous porous environment of bed at limits of hydrocarbon-water and water-hydrocarbon, separation of water and hydrocarbon streams and bringing current water-hydrocarbon contact to initial position. Then during extraction water is drained through tail piece, and hydrocarbon - along behind-pipe space.

EFFECT: higher yield.

3 cl, 1 dwg

FIELD: oil and gas producing industry, in particular composition for killing of well.

SUBSTANCE: claimed polysaccharide gel contains sweet or mineralized water, polysaccharide gelling agent, boron cross-linking agent, diethanolamine, quaternary ammonium compounds, and mixture of non-ionic and anionic surfactant (complex surfactant). Mixture of water soluble oxyethilated alkylphenols and their sulphoethoxylates in form of sodium salts or salts with triethanolamine is used as complex surfactant in amount of 0.1-0.5 kg on 1000 l of water being the gel base. Polysaccharide gel is obtained by dissolution and hydration of polysaccharide gelling agent in sweet or mineralized water (preferably monovalent ion solution) followed by treatment of obtained polysaccharide solution with aqueous solution including boron cross-linking agent, diethanolamine, quaternary ammonium compounds, and complex surfactant.

EFFECT: well killing composition of improved quality.

2 cl, 6 ex, 1 tbl

FIELD: oil and gas extractive industry.

SUBSTANCE: compound includes water and inhibiting salt, as inhibiting salt contains processed electrolyte - side product during production of magnesium via electrolysis from carnallite, and additionally as reducer of filtering and thickener - carbooximethylcellulose polymer, and as colmatation agent - magnesium oxide with following relation of components in percents of mass: processed electrolyte - side product of magnesium production via electrolysis from carnallite 10.0-15.0, carbooximethylcellulose 2.5-3.0; magnesium oxide 1.0-2.0, water 80.0-86.5.

EFFECT: higher efficiency.

3 tbl

FIELD: oil and gas extractive industry.

SUBSTANCE: foam-forming compound for shutting wells contains hydrocarbon liquid, mixture of surfactants, one of components thereof is water solution of lignosulphonate reagent of 25% concentration, herbal filling agent and 20% water solution of calcium chloride, as lignosulphonate agent reagent it contains powder-like technical lignosulphonate, and as other component of surfactant mixture - hexamethylentetramine, and as herbal filling agent - peat or grass flour with following ratio of components in percents of mass: hydrocarbon liquid 12-14, said water solution of technical powder-like lignosulphonate 17-21, hexamethylentetramine 0.17-0.63, peat or grass flour 3-6, said calcium chloride solution - the rest, while relation of mass portions between said water solution of technical powder-like lignosulphonate and hexamethylentetramine is 1: 0.01-0.03 respectively, as grass flour it contains pulverized herbal waste of grain bread production or similar substance.

EFFECT: higher efficiency.

2 cl, 18 ex, 1 dwg

FIELD: mining industry.

SUBSTANCE: invention can be used in case of gas-lift operation of wells equipped by free piston-type installations. Invention envisages stopping well, connecting tube space and annular space in wellhead, recording bottom zone and wellhead pressures in tube and annular spaces, and computing well operation parameters using inflow curve plotted according to differences of bottom zone and wellhead pressures. Volume of produced fluid is found from potential output of formation and from condition of output of free piston. When comparing these volumes, parameters of well are computed in the base of minimum volume value.

EFFECT: optimized well operation.

2 dwg

The invention relates to the oil industry and can be used in the operation of deep-pumping of wells in which the reservoir is divided into water-saturated and saturated intervals

FIELD: mining industry.

SUBSTANCE: invention can be used in case of gas-lift operation of wells equipped by free piston-type installations. Invention envisages stopping well, connecting tube space and annular space in wellhead, recording bottom zone and wellhead pressures in tube and annular spaces, and computing well operation parameters using inflow curve plotted according to differences of bottom zone and wellhead pressures. Volume of produced fluid is found from potential output of formation and from condition of output of free piston. When comparing these volumes, parameters of well are computed in the base of minimum volume value.

EFFECT: optimized well operation.

2 dwg

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