CN112814635A - Pulse type pressurization water injection string - Google Patents

Pulse type pressurization water injection string Download PDF

Info

Publication number
CN112814635A
CN112814635A CN202110328939.0A CN202110328939A CN112814635A CN 112814635 A CN112814635 A CN 112814635A CN 202110328939 A CN202110328939 A CN 202110328939A CN 112814635 A CN112814635 A CN 112814635A
Authority
CN
China
Prior art keywords
pressure
pump
valve
power piston
piston
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202110328939.0A
Other languages
Chinese (zh)
Other versions
CN112814635B (en
Inventor
管芮
杨春语
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Liaoning Jinxing Petroleum Group Co ltd
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202110328939.0A priority Critical patent/CN112814635B/en
Publication of CN112814635A publication Critical patent/CN112814635A/en
Application granted granted Critical
Publication of CN112814635B publication Critical patent/CN112814635B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/20Displacing by water
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00Survey of boreholes or wells
    • E21B47/06Measuring temperature or pressure
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use

Abstract

The invention discloses a pulse type pressurization water injection pipe column, which comprises a sucker rod, a water replenishing pump and a water storage tank, one end of the sucker rod is connected with a counterweight column, the water storage tank is arranged on the ground, the inlet end of the water replenishing pump is communicated with the water storage tank, the outlet end of the water replenishing pump is communicated with the supercharging device, the control part of the water replenishing pump is connected with the control system, the invention utilizes the pumping unit to drive the underground supercharging device to achieve the purpose of injection increasing, the device can increase the injection pressure under the condition of not increasing the pressure of a ground pipeline, thereby achieving the purpose of increasing the injection and avoiding the phenomena that ground equipment hurts people due to high pressure and pipelines puncture, meanwhile, the pressure sensor can be used for monitoring the water body pressure in the pressurizing device, and the water replenishing pump is started and stopped through the control system according to monitoring data, so that the purpose of pressurizing and injecting water in the pipe column is achieved.

Description

Pulse type pressurization water injection string
Technical Field
The invention relates to the technical field of oil development water injection, in particular to a pulse type pressurization water injection string.
Background
In the process of oil field development, the water injection system is an important component of an oil field production system and is used for realizing high and stable yield of an oil field and maintaining stratum energy. The method can improve the formation pressure through artificial water injection, so that an oil layer has a powerful oil displacement condition, a higher oil layer pressure is maintained, oil flow can effectively overcome various resistances, and long-term stable yield and high yield are achieved.
Disclosure of Invention
The invention aims to solve the problems, designs a pulse type pressurization water injection string, and solves the problems that in the prior art, the injection water pressure is high due to low permeability of an oil layer, an injection pump is mostly additionally arranged on the ground, and normal water injection is realized by improving the water injection pressure on the ground, however, the mode causes high pressure and corrosion of a ground pipeline, the phenomena of puncture and leakage frequently occur, certain damage is caused to the safety of ground personnel and equipment, and the water injection pressure cannot be effectively controlled.
The technical scheme of the invention for realizing the aim is as follows: a pulse type pressure-increasing water injection pipe column comprises a sucker rod, a water supplementing pump and a water storage tank, wherein one end of the sucker rod is connected with a counterweight column, the water storage tank is installed on the ground, the inlet end of the water supplementing pump is communicated with the water storage tank, the outlet end of the water supplementing pump is communicated with a pressure increasing device, the control part of the water supplementing pump is connected with a control system, the upper end of the pressure increasing device is connected with a butt joint device, the butt joint device is connected with the counterweight column, a first pressure sensor is arranged on the inner side of the upper portion of the pressure increasing device and connected with the control system through a first transmission cable, the lower portion of the pressure increasing device is connected with a pressure-decreasing controller body, a pressure-decreasing controller is arranged in a side wall hole of the pressure-decreasing controller body, a second pressure sensor is arranged in a groove in the pressure-decreasing controller body, a packer is sleeved at the lower part of the pressure relief controller body;
the supercharging device includes: the anti-backflow water replenishing pump comprises a power piston cylinder, a positioning connecting assembly, a sliding sealing assembly, a range-increasing pressurizing assembly and an injection-increasing pump cylinder, wherein the power piston cylinder is communicated with the outlet end of a water replenishing pump, the positioning connecting assembly is inserted into the power piston cylinder and connected with a counterweight column, the sliding sealing assembly is sleeved outside the positioning connecting assembly and attached to the power piston cylinder, the range-increasing pressurizing assembly is arranged in the power piston cylinder and connected with the positioning connecting assembly, the injection-increasing pump cylinder is arranged at the lower end of the power piston cylinder and matched with the range-increasing pressurizing assembly, and an anti-backflow valve is arranged in the injection-increasing pump cylinder.
The positioning connection assembly includes: the pump comprises an upper joint, a bridge joint and a driven pump cylinder, wherein one end of the upper joint is connected with a butt joint device, the bridge joint is arranged at the lower end of the upper joint, the bridge joint is provided with a plurality of axial through holes around a central axis, the driven pump cylinder is inserted into a power piston cylinder, and one end of the driven pump cylinder is connected with the bridge joint.
The sliding seal assembly includes: the power piston is sleeved outside the positioning and connecting assembly in a sliding mode and is in clearance fit with the power connecting assembly, the end portion of the lower portion of the power piston is provided with a pressure relief hole communicated with an overflowing clearance, the sliding valve is sleeved outside the positioning and connecting assembly in a sliding mode and is located above the power piston, the limiting ring is sleeved on the outer wall of the positioning and connecting assembly in a fixed mode and is located above the sliding valve, the fixing cap is arranged on the side wall of the lower portion of the positioning and connecting assembly, a pressure relief groove is formed in the inner side wall face of the middle portion of the power piston cylinder, and the length of the pressure relief groove is larger than that of the power piston.
The range-extending pressurizing assembly comprises: passive piston, connecting rod, weight bar and pressure boost piston, passive piston slides and sets up in passive pump cylinder, the upper end of connecting rod is connected with passive piston, the weight bar sets up on the lower extreme of connecting rod, it has the feed liquor hole to open on the weight bar lateral wall, the feed liquor hole communicates with each other with the inside axial hole in weight bar lower part, the pressure boost piston sets up on the lower extreme of weight bar, pressure boost piston the central axis department offer the shoulder hole and by last internal diameter crescent and with the feed liquor hole that the weight bar side was opened under to, be provided with the valve of increasing the notes in the pressure boost piston.
The anti-backflow valve comprises: the injection pump comprises a valve seat, a valve ball and a valve cover, wherein the valve seat is arranged in the injection pump barrel, and the valve cover seals the valve ball in the valve seat.
The filling valve comprises: the valve comprises a valve seat, a valve ball and a valve cover, wherein the valve seat is arranged in the pressurizing piston, and the valve ball is sealed in the valve seat through the valve cover.
The edge positions of the upper end face and the lower end face of the passive piston are both in a chamfer structure.
The connecting rod is of a cylindrical rod-shaped structure, the upper end part and the lower end part of the connecting rod are provided with external threads, and the upper part of the connecting rod is connected with the driven piston through threads.
And a coupling is connected between the injection increasing pump cylinder and the pressure relief controller body.
The packer is connected with the lower part of the pressure relief controller body through threads.
The pulse type pressure-increasing water injection pipe column manufactured by the technical scheme of the invention utilizes the pumping unit to drive the underground pressure-increasing device to achieve the purpose of increasing injection, the device can increase the injection pressure under the condition of not increasing the pressure of a ground pipeline, further achieve the purpose of increasing injection, simultaneously avoid the phenomena of high-pressure injury to ground equipment and pipeline leakage, simultaneously monitor the water body pressure in the pressure-increasing device by utilizing the pressure sensor, and carry out start-stop control operation on the water replenishing pump by a control system according to monitoring data to realize the purpose of pressure-increasing water injection in the pipe column, solve the problems that in the prior art, the pressure of low-permeability guided water injection of an oil layer is high, the pressure-increasing pump is mostly additionally arranged on the ground, normal water injection is realized by improving the water injection pressure on the ground, however, the mode can cause large pressure of the ground pipeline and corrosion, and the phenomenon of leakage frequently occurs, the safety of ground personnel and equipment is harmed to a certain extent, and the water injection pressure can not be effectively controlled.
Drawings
Fig. 1 is a schematic sectional view of a pulse type pressurized water injection string according to the present invention.
Fig. 2 is a schematic front sectional view of a pressurizing device of a pulse pressurizing water injection string according to the present invention.
FIG. 3 is a schematic diagram of a partially enlarged structure of an upper end of a pulse type pressurized water injection string according to the present invention.
FIG. 4 is a schematic diagram of a partially enlarged structure of a lower end of a pulse type pressurized water injection string according to the present invention.
In the figure: 1. a sucker rod; 2. a counterweight column; 3. a control system; 4. a water replenishing pump; 5. a water storage tank; 6. a butt joint device; 7. a first transmission cable; 8. a first pressure sensor; 9. a pressure boosting device; 10. a coupling; 11. a pressure relief controller body; 12. a pressure relief controller; 13 a transmission cable; 14. a second pressure sensor; 15. a packer; 9-1, an upper joint; 9-2, a bridge joint; 9-3, a passive pump cylinder; 9-4, a power piston cylinder; 9-5, a passive piston; 9-6, a limit ring; 9-7, a sliding valve; 9-8, power piston; 9-9, pressure relief holes; 9-10, fixing cap; 9-11, a pressure relief groove; 9-12, connecting rod; 9-13, a weight lever; 9-14 parts of liquid inlet hole; 9-15, a pressurizing piston; 9-16, augmented injection valve; 9-16-1, valve seat; 9-16-2, Versailles; 9-16-3 and a valve cover; 9-17, adding a pump cylinder; 9-18 parts of a backflow prevention valve; 9-18-1 and Versailles; 9-18-2, Versailles; 9-18-3 and a valve cover.
Detailed Description
The present invention is described in detail below with reference to the accompanying drawings, as shown in fig. 1 to 4, by those skilled in the art, all electrical components in the present application are connected to their adapted power supplies through wires, and an appropriate controller should be selected according to actual conditions to meet control requirements, and specific connection and control sequence should be implemented by referring to the following working principle, in which the electrical connection between the electrical components is implemented in sequence, and the detailed connection means thereof is known in the art, and the following description mainly describes the working principle and process, and does not describe the electrical control.
Example (b): as can be seen from the attached figures 1-4 of the specification, in the implementation process, a first transmission cable 7 and a second transmission cable 13 are lowered into a shaft along with a pipe column, a water storage tank 5 is installed on the ground, an inlet of a water replenishing pump 4 is connected with the water storage tank 5, an outlet of the water replenishing pump 4 is communicated with the inside of a power piston cylinder 9-4 of a pressure boosting device 9, the lower part of the first transmission cable 7 is connected with a first pressure sensor 8, the lower part of the second transmission cable 13 is connected with a second pressure sensor 14, the upper parts of the first transmission cable 7 and the second transmission cable 13 are connected with a control system 3, a control part of the water replenishing pump 4 is connected with the control system 3, the upper part of a coupling 10 is connected with the pressure boosting device 9, and the lower part of the coupling 10 is connected; the pressure relief controller 12 is installed on a side wall hole on the pressure relief controller body 11; the second pressure sensor 14 is installed in a groove inside the pressure relief controller body 11 and is coupled with the second transmission cable 13, and the packer 15 is coupled to the lower portion of the pressure relief controller body 11 by a coupling means such as a screw.
The upper part of the upper joint 9-1 is internally provided with internal threads of the sucker rod to facilitate the connection with the sucker rod 1, and the lower part of the upper joint is provided with external threads to facilitate the connection with other parts; the upper joint 9-1 and the bridge joint 9-2 are connected together through threads; threads are turned at the central part and the outer part of the bridge joint 9-2 to be conveniently connected with other parts, and a plurality of axial through holes are formed around the central axis of the bridge joint 9-2 to facilitate the fluid to enter and exit; the bridge joint 9-2 is connected with the upper joint 9-1 through threads, and is connected with the upper end part of the passive pump barrel 9-3 through threads; the upper part of the driven pump cylinder 9-3 is provided with an external thread, and the outer part of the lower end part of the external thread is provided with an external thread; the external part of the lower part of the driven cylinder 9-3 is also provided with external threads for being conveniently connected with other parts; the limiting ring 9-6 is annularly sleeved outside the driven pump barrel 9-3 and is connected with the driven barrel 9-3 through fixed connection modes such as pins or welding; the sliding valve 9-7 is also sleeved outside the driven pump cylinder 9-3, a sealing ring is arranged between the sliding valve 9-7 and the driven pump cylinder 9-3, and the sliding valve 9-7 can freely slide up and down on the outer wall of the driven pump cylinder 9-3; the power piston 9-8 is sleeved outside the driven pump cylinder 9-3 and is in clearance fit with the driven pump cylinder 9-3, and the lower end part of the power piston 9-8 is provided with a pressure relief hole 9-9 communicated with the overflowing clearance; the fixed cap 9-10 is connected to the lower part of the passive pump cylinder 9-3 through threads or other fixing modes to prevent components sleeved on the passive pump cylinder 9-3 from falling off; the upper part and the lower part of the power piston cylinder 9-4 are provided with internal threads so as to be conveniently connected with other parts; a pressure relief groove 9-11 is turned in the middle of the power piston cylinder 9-4; the driven piston 9-5 is cylindrical, the lower part of the driven piston is provided with internal threads for being conveniently connected with other parts, and chamfers are arranged on the upper part and the lower part of the driven piston 9-5 for being conveniently assembled; the driven piston 9-5 is arranged in the driven pump cylinder 9-3, and the driven piston 9-5 can freely slide along the interior of the driven pump cylinder 9-3; the connecting rods 9-12 are cylindrical, and the upper end part and the lower end part are both provided with external threads for being conveniently connected with other parts; the upper parts of the connecting rods 9-12 are connected with the passive piston through threads; the lower part of the connecting rod 9-12 is connected with the balance weight rod 9-13 through threads; the upper part of the counterweight rod 9-13 is turned with an internal screw to be conveniently connected with the connecting rod 9-12, the side wall of the counterweight rod 9-13 is provided with a liquid inlet 9-14, and the liquid inlet 9-14 is communicated with a blind hole in the lower part of the counterweight rod 9-13; the outer diameter of the upper part of the counterweight rod 9-13 is larger, and the outer diameter of the lower part is smaller; the center position of the inner part of the lower part of the counterweight rod 9-13 is provided with internal threads so as to be convenient for connecting with other parts; the pressurizing piston 9-15 is cylindrical, the upper part of the pressurizing piston is provided with external threads for being conveniently connected with other parts, a stepped hole is arranged at the central axis, and the inner diameter of the stepped hole is gradually increased from top to bottom; the pressure increasing valve 9-16 is connected to the inside of the pressure increasing piston 9-15 through threads or other fixed modes, and the valve ball 9-16-2 is pressed inside the valve seat 9-16-1 through the valve cover 9-16-3; the upper part of the augmented injection pump cylinder 9-17 is connected with the power piston cylinder 9-4 through threads or other connection modes, a stepped hole is formed in the augmented injection pump cylinder 9-17, the inner diameter of the stepped hole is gradually increased from top to bottom, and external threads are turned on the upper part and the lower part of the augmented injection pump cylinder 9-17 to facilitate the connection with other parts; the backflow prevention valve 9-18 is connected inside the injection pump barrel 9-17 through threads; the valve cover 9-18-3 seals the valve ball 9-18-2 in the valve seat 9-18-1;
when the device is put into a shaft to a designed depth during operation, the packer 15 is set, the tail end of a further sucker rod 1 is connected with a counterweight column 2 to facilitate the downward movement of an upper joint 9-1, and the lower part of the counterweight column 2 is connected with the upper half part of a butt joint device 6 to facilitate the butt joint with the lower half part of the butt joint device 6 connected with the upper joint 9-1; when the upper part and the lower part of the butt joint device 6 are connected, water is injected into the power piston cylinder 9-4, when the water can be injected, the parts related to the upper joint 9-1 are in a static state, the water passes through a gap between the driven cylinder 9-3 and the power piston cylinder 9-4, further passes through a gap between the counterweight rod 9-13 and the power piston cylinder 9-4, passes through a liquid inlet 9-14, further passes through an injection increasing valve 9-16, further passes through an injection increasing pump cylinder 9-17 and further passes through an anti-backflow valve 9-18 to be injected into a target oil reservoir;
when the injection pump on the ground can not inject water, the device is started.
Firstly, the injection pressure is estimated, the estimated injection pressure is higher than the actual injection pressure as much as possible, the estimated injection pressure value is assigned to the control system 3, the system can automatically calculate the required internal pressure of the pipe column, pressure data signals at the upper parts of the power piston cylinders 9-4, which are obtained by the first pressure sensor 8, are fed back to the control system 3 through the first transmission cable 7, the system can automatically identify and make a judgment, the water replenishing pump 4 is started and stopped, the pressure at the position of the pressure relief controller body 11 is monitored by the second pressure sensor 14, the second pressure sensor 13 assigns values to the control system 3 at any time, the control system 3 can automatically calculate the required pipe column pressure to start and stop the water replenishing pump 4, meanwhile, the second pressure sensor 14 transmits the injection pressure to the control system 3 through the second transmission cable 13, and the injection pressure is displayed through the liquid crystal screen.
When the pressure of the pipe column is automatically adjusted to be matched with the injection pressure, the power piston 9-8 starts to move upwards along with the passive pump cylinder 9-3 and the accessories, the power piston 9-8 and the sliding valve 9-7 are in a sealing state, the position of the power piston 9-9 is positioned in a pressure relief groove 9-11 of the power piston cylinder 9-4, and the power piston is in up-and-down liquid communication; the upper joint 9-1 moves upwards, the sliding valve 9-7 moves together with the driven pump cylinder 9-3, the power piston 9-9 is in a static state, the upper joint 9-1 further moves upwards, the power piston 9-9 is driven by the fixing cap 9-10 to move upwards to an upper dead point together with the upper joint 9-1, the driven pump cylinder 9-3 and components mounted on the driven pump cylinder; in the upward movement process, the power piston 9-9 and the power piston cylinder 9-4 are kept in a sealing state, the sliding valve 7 is separated from the power piston 9-8, and liquid enters the lower part of the power piston cylinder 9-4 through a gap between the power piston 9-8 and the driven pump cylinder 9-3 and further through the pressure relief hole 9-9.
When the power piston 9-8 moves downwards along with the passive pump cylinder 9-3 and the accessories, the upper joint 9-1, the passive pump cylinder 9-3 and the components arranged on the upper joint are moved downwards together, the power piston 9-8 keeps a separation state with the sliding valve 9-7, the upper joint 9-1, the passive pump cylinder 9-3 and the components arranged on the upper joint are further moved downwards together, the sliding valve 9-7 is contacted with the power piston 9-8 and moves downwards together until the sliding valve 9-7 is blocked by the limiting ring 9-6, the power piston 9-8 keeps a sealing state with the sliding valve 7, the upper joint 9-1, the passive pump cylinder 9-3 and the components arranged on the lower joint move downwards together, and the liquid in the power piston cylinder 9-4 at the lower part is extruded to form a high pressure area, the further driven piston 9-5 drives the connecting components such as the connecting rod 9-12, the counterweight rod 9-13, the booster piston 9-15, the booster valve 9-16 and the like which are directly or indirectly connected with the driven piston to move upwards under the action of high pressure, the further upper joint 9-1, the driven pump barrel 9-3 and the components mounted on the upper joint move downwards to a bottom dead center together, meanwhile, the driven piston 9-5 drives the connecting components such as the connecting rod 9-12, the counterweight rod 9-13, the booster piston 9-15, the booster valve 9-16 and the like which are directly or indirectly connected with the driven piston 9-5 to move to a top dead center under the action of high pressure, and as the area of the power piston 9-8 is n times of the area of the driven piston 9-5, the ascending distance of the driven piston 9-5 is n times of the descending distance of the power piston, the method belongs to the technical scheme that the range is increased by ascending; at the moment, the movable piston 9-5 enters a pressure relief groove 9-11 above the power piston cylinder 9-4, the upper joint 9-1, the passive pump cylinder 9-3 and components mounted on the upper joint and the power piston cylinder 9-4 extrude to form high-pressure area liquid, the liquid is quickly relieved through the pressure relief groove 9-11, the upper pressure and the lower pressure of the passive piston 9-5 are balanced, under the action of self weight and hydraulic pressure, the connecting rod 9-12, the counterweight rod 9-13, the pressure boost piston 9-15, the pressure boost valve 9-16 and other connecting components which are directly or indirectly connected with the passive piston are further driven to move downwards, the pressure boost valve 9-16 is further pressed and closed, the hydraulic pressure of the liquid in the pressure boost pump cylinder 9-17 is gradually increased, the anti-backflow valve 9-18 is further opened, the liquid enters the stratum, and a pressure boosting process is completed, thus, the operation is repeated periodically, and the continuous operation of pressurizing and water injection is realized.
In summary, the pulse type pressure boosting water injection pipe column utilizes the oil pumping unit to drive the underground pressure boosting device to achieve the purpose of increasing injection, the device can increase the injection pressure under the condition of not increasing the pressure of a ground pipeline, further achieve the purpose of increasing injection, simultaneously avoid the phenomena that ground equipment hurts people due to high pressure and the pipeline leaks, simultaneously monitor the water pressure in the pressure boosting device by utilizing the pressure sensor, and start and stop control operation is carried out on the water replenishing pump through the control system according to the monitoring data to achieve the purpose of boosting water injection in the pipe column, and solve the problems that in the prior art, the pressure of low-permeability guiding injection water of an oil layer is high, the pressure boosting pump is mostly additionally arranged on the ground, and normal water injection is realized by improving the water injection pressure on the ground, however, the mode can cause large pressure and corrosion of the ground pipeline, the phenomena of puncture often occur, and certain damage is caused to the safety of ground personnel and equipment, and the water injection pressure can not be effectively controlled.
The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides a pulsed pressure boost water injection tubular column, includes sucker rod (1), moisturizing pump (4) and water storage tank (5), its characterized in that, the one end of sucker rod (1) is connected with counter weight post (2), water storage tank (5) are installed subaerial, the entry end and the water storage tank (5) of moisturizing pump (4) are linked together, the exit end and the supercharging device (9) of moisturizing pump (4) are linked together, the control part and the control system (3) of moisturizing pump (4) link, the upper end of supercharging device (9) is connected with butt-joint ware (6), butt-joint ware (6) are connected with counter weight post (2), supercharging device (9) upper portion inboard is provided with first pressure sensor (8), first pressure sensor (8) link with control system (3) through first transmission cable (7), supercharging device (9) sub-unit connection has pressure release controller body (11), a pressure relief controller (12) is arranged in a side wall hole of the pressure relief controller body (11), the second pressure sensor (14) is arranged in a groove in the pressure relief controller body (11), the second pressure sensor (14) is connected with the control system (3) through a second transmission cable (13), and a packer (15) is sleeved on the lower portion of the pressure relief controller body (12);
the supercharging device (9) comprises: a power piston cylinder (9-4), a positioning connecting component, a sliding sealing component, a range-increasing pressurizing component and an injection-increasing pump cylinder (9-17), the power piston cylinder (9-4) is communicated with the outlet end of the water replenishing pump (4), the positioning connecting assembly is inserted in the power piston cylinder (9-4) and is connected with the counterweight column (2), the sliding seal assembly is sleeved outside the positioning connection assembly and is attached to the power piston cylinder (9-4), the range-increasing pressurizing assembly is arranged in the power piston cylinder (9-4) and is connected with the positioning connecting assembly, the injection increasing pump cylinder (9-17) is arranged on the lower end of the power piston cylinder (9-4) and is matched with the range increasing pressurizing assembly, and the injection increasing pump cylinder (9-17) is internally provided with a backflow preventing valve (9-18).
2. The pulsed pressurized water injection string of claim 1, wherein the positioning connection assembly comprises: the pump comprises an upper connector (9-1), a bridge connector (9-2) and a driven pump cylinder (9-3), wherein one end of the upper connector (9-1) is connected with a butt joint device (6), the bridge connector (9-2) is arranged at the lower end of the upper connector (9-1), the bridge connector (9-2) is provided with a plurality of axial through holes around a central axis, the driven pump cylinder (9-3) is inserted into a power piston cylinder (9-4), and one end of the driven pump cylinder is connected with the bridge connector (9-2).
3. The pulsed pressurized water injection string of claim 1, wherein the sliding seal assembly comprises: the power piston (9-8), the sliding valve (9-7), the limiting ring (9-6) and the fixing cap (9-10), the power piston (9-8) is sleeved outside the positioning connecting assembly in a sliding mode and is in clearance fit with the power connecting assembly, the end portion of the lower portion of the power piston (9-8) is provided with a pressure relief hole (9-9) communicated with an overflowing clearance, the sliding valve (9-7) is sleeved outside the positioning connecting assembly in a sliding mode and is located above the power piston (9-8), the limiting ring (9-6) is fixedly sleeved on the outer wall of the positioning connecting assembly and is located above the sliding valve (9-7), the fixing cap (9-10) is arranged on the side wall of the lower portion of the positioning connecting assembly, and the inner side wall face of the middle portion of the power piston cylinder (9-8) is provided with a pressure relief groove (9-11), the length of the pressure relief groove (9-11) is greater than that of the power piston (9-8).
4. The pulsed pressurized water injection string of claim 2, wherein the extended-range pressurization assembly comprises: the pump comprises a driven piston (9-5), a connecting rod (9-12), a balance weight rod (9-13) and a pressurizing piston (9-15), wherein the driven piston (9-5) is arranged in a driven pump cylinder (9-3) in a sliding mode, the upper end of the connecting rod (9-12) is connected with the driven piston (9-5), the balance weight rod (9-13) is arranged at the lower end of the connecting rod (9-12), a liquid inlet hole (9-14) is formed in the side wall of the balance weight rod (9-13), the liquid inlet hole (9-14) is communicated with an axial hole in the lower portion of the balance weight rod (9-13), the pressurizing piston (9-15) is arranged at the lower end of the balance weight rod (9-13), a step hole is formed in the central axis of the pressurizing piston (9-15), and the inner diameter of the pressurizing piston gradually increases from top to bottom, And is communicated with a liquid inlet hole (9-14) opened at the side of the balance weight rod (9-13), and a filling valve (9-16) is arranged in the pressurizing piston (9-15).
5. A pulsed pressurized water injection string according to claim 1, characterized in that the anti-backflow valves (9-18) comprise: the injection pump comprises a valve seat (9-18-1), a valve ball (9-18-2) and a valve cover (9-18-3), wherein the valve seat (9-18-1) is arranged in an injection pump barrel (9-17), and the valve ball (9-18-2) is sealed inside the valve seat (9-18-1) by the valve cover (9-18-3).
6. A pulsed pressurized water injection string according to claim 4, characterized in that the injection valves (9-16) comprise: the valve ball type booster comprises a valve seat (9-16-1), a valve ball (9-16-2) and a valve cover (9-16-3), wherein the valve seat (9-16-1) is arranged in a booster piston (9-15), and the valve ball (9-16-2) is sealed inside the valve seat (9-16-11) through the valve cover (9-16-3).
7. The pulse type pressurization water injection string according to claim 4, characterized in that the edge positions of the upper end face and the lower end face of the passive piston (9-5) are in a chamfer structure.
8. The pulse type pressurization water injection string according to claim 4, characterized in that the connecting rods (9-12) are cylindrical rod-shaped structures, the upper end and the lower end of each connecting rod are externally threaded, and the upper parts of the connecting rods (9-12) are connected with the driven pistons through threads.
9. The pulse type pressurization water injection string according to claim 1, characterized in that a coupling (10) is connected between the pressurization and injection pump cylinders (9-17) and the pressure relief controller body (11).
10. The pulse type pressurization water injection string as claimed in claim 1, characterized in that the packer (15) is connected with the lower part of the pressure release controller body (11) through threads.
CN202110328939.0A 2021-03-27 2021-03-27 Pulse type pressurization water injection string Active CN112814635B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110328939.0A CN112814635B (en) 2021-03-27 2021-03-27 Pulse type pressurization water injection string

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110328939.0A CN112814635B (en) 2021-03-27 2021-03-27 Pulse type pressurization water injection string

Publications (2)

Publication Number Publication Date
CN112814635A true CN112814635A (en) 2021-05-18
CN112814635B CN112814635B (en) 2022-08-12

Family

ID=75863521

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110328939.0A Active CN112814635B (en) 2021-03-27 2021-03-27 Pulse type pressurization water injection string

Country Status (1)

Country Link
CN (1) CN112814635B (en)

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020007952A1 (en) * 2000-07-24 2002-01-24 Vann Roy R. Cable actuated downhole smart pump
US20020189805A1 (en) * 2001-06-13 2002-12-19 Weatherford/Lamb, Inc. Double-acting reciprocating downhole pump
EP1541774A2 (en) * 2003-12-09 2005-06-15 M. Michel Seguin Method and device for hydraulically declogging a well
US20070110598A1 (en) * 2005-11-17 2007-05-17 Jacobs Christopher A System and method for pumping fluids
US7669651B1 (en) * 2007-03-01 2010-03-02 Carstensen Kenneth J Apparatus and method for maximizing production of petroleum wells
US20100126721A1 (en) * 2007-02-13 2010-05-27 Al-Jarri Abdulrahman S Subterranean water production, transfer and injection method and apparatus
US20110048724A1 (en) * 2008-01-17 2011-03-03 Wavefront Reservoir Technologies Ltd. System for pulse-injecting fluid into a borehole
CN201874543U (en) * 2010-11-26 2011-06-22 大港油田集团有限责任公司 Underground boosting water injection process pipe string
CN105422065A (en) * 2015-12-29 2016-03-23 中国石油天然气股份有限公司 Huff-and-puff oil production device with electric submersible reciprocating pump
CN105649585A (en) * 2016-01-27 2016-06-08 新疆江汉油田技术服务有限公司 Flood suction integrated pipe column and operating process thereof
US20190292866A1 (en) * 2016-05-26 2019-09-26 Metrol Technology Limited Method to manipulate a well using an overbalanced pressure container
CN112282712A (en) * 2019-07-24 2021-01-29 中国石油天然气股份有限公司 Underground reciprocating water injection device
CN112302590A (en) * 2019-07-24 2021-02-02 中国石油天然气股份有限公司 Underground pressurizing water injection device and method

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020007952A1 (en) * 2000-07-24 2002-01-24 Vann Roy R. Cable actuated downhole smart pump
US20020189805A1 (en) * 2001-06-13 2002-12-19 Weatherford/Lamb, Inc. Double-acting reciprocating downhole pump
EP1541774A2 (en) * 2003-12-09 2005-06-15 M. Michel Seguin Method and device for hydraulically declogging a well
US20070110598A1 (en) * 2005-11-17 2007-05-17 Jacobs Christopher A System and method for pumping fluids
US20100126721A1 (en) * 2007-02-13 2010-05-27 Al-Jarri Abdulrahman S Subterranean water production, transfer and injection method and apparatus
US7669651B1 (en) * 2007-03-01 2010-03-02 Carstensen Kenneth J Apparatus and method for maximizing production of petroleum wells
US20110048724A1 (en) * 2008-01-17 2011-03-03 Wavefront Reservoir Technologies Ltd. System for pulse-injecting fluid into a borehole
CN201874543U (en) * 2010-11-26 2011-06-22 大港油田集团有限责任公司 Underground boosting water injection process pipe string
CN105422065A (en) * 2015-12-29 2016-03-23 中国石油天然气股份有限公司 Huff-and-puff oil production device with electric submersible reciprocating pump
CN105649585A (en) * 2016-01-27 2016-06-08 新疆江汉油田技术服务有限公司 Flood suction integrated pipe column and operating process thereof
US20190292866A1 (en) * 2016-05-26 2019-09-26 Metrol Technology Limited Method to manipulate a well using an overbalanced pressure container
CN112282712A (en) * 2019-07-24 2021-01-29 中国石油天然气股份有限公司 Underground reciprocating water injection device
CN112302590A (en) * 2019-07-24 2021-02-02 中国石油天然气股份有限公司 Underground pressurizing water injection device and method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
丁倩: "低频脉动注水井增注技术研究与评价", 《石化技术》 *

Also Published As

Publication number Publication date
CN112814635B (en) 2022-08-12

Similar Documents

Publication Publication Date Title
CN102383759B (en) Multifunctional blowout preventer specially used for steam-driven well
WO2017000622A1 (en) Storage-type precise quantitative injection system for injection of underground oil or gas well operating agent and injection method thereof
CN103075123B (en) A kind of electric liquid drives setting tool
CN112814635B (en) Pulse type pressurization water injection string
CN109779543A (en) A kind of expansion tube pressurization pressure charging system
CN201778771U (en) Fixed tubular column hydraulic jetting layer separating and fracturing integral tubular column
CN212867528U (en) Downhole flow control layering and simultaneous production device and constant-displacement oil production device
CN210919029U (en) Three-layer oil production is with looking for stifled tubular column
CN112282712B (en) Underground reciprocating type water injection device
CN203022678U (en) Blowout preventer pressure testing and boosting device
CN112855099B (en) Pulse type pressurization injection device
CN208763632U (en) Anti- return of one kind spits eccentric injection mandrel
CN201078219Y (en) Beam pumping unit drive type hydraulic oil pumping system without pole
CN203260953U (en) Cable injecting and recovering system
CN202451097U (en) Differential motion hydraulic pressure booster for horizontal section of horizontal well
CN201425018Y (en) Pipe column drainage pump for oil well
CN105422042B (en) One kind is exempted to bore two stage cementing device
CN204024568U (en) Water injection well oil jacket plugging device
CN2854066Y (en) Pressure non-return gate gurgle valve
CN210859161U (en) Hydraulic control blowout preventer for pump oil pipe
CN209817975U (en) Expansion pipe pressurization supercharging device
CN110821452B (en) Same well extracting and injecting underground pump
RU2523270C1 (en) Well conversion method, including flooded wells, for operation with two production strings and device for its implementation
CN113356813B (en) Pressure drive injector, using pipe column and multi-round sub-layer pressure drive method
CN215761587U (en) Hydraulic-based reinforcement upward-pulling and releasing device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20220721

Address after: 124000 No. 6-7 Workshop of Petroleum Equipment Manufacturing Base Phase III, Xinglongtai District, Panjin City, Liaoning Province

Applicant after: Liaoning Jinxing Petroleum Group Co.,Ltd.

Address before: 116000 2-1-1, No.25, Xinbo North Garden, Ganjingzi District, Dalian City, Liaoning Province

Applicant before: Guan Rui

GR01 Patent grant
GR01 Patent grant