Oil extraction water injection adjusting device

Abstract

The utility model relates to the technical field of oil extraction and water injection, and discloses an oil extraction and water injection adjusting device which comprises a water injection well, and a water injection pipe is arranged in a water injection opening of the water injection well. The oil extraction and water injection adjusting device comprises a water injection pipe, the water injection pipe is provided with a sealing mechanism, the sealing mechanism is used for improving the sealing performance between the water injection pipe and a water injection well, and the top of the water injection well is provided with a center positioning mechanism for limiting and locking the water injection pipe. The sealing performance of the gap between the water injection well and the water injection pipe can be improved, it is avoided that a large amount of water leaks to the outside of the water injection well, the water injection efficiency is reduced, waste of water resources is reduced, meanwhile, the water injection pressure can be kept stable, more energy and cost are not needed for maintaining the needed water injection pressure, energy consumption is reduced, and the using effect of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil production water injection technical field, concretely is an oil production water injection adjusting device. BACKGROUND

[0002] With the development of society, the importance of petroleum energy to the modern economic development is self-evident, is called the "blood" of modern industry, and in the process of oil exploitation, the production well needs to be water injection, thereby improving the recovery efficiency of oil well, and the adjusting device needs to be used in the water injection process;

[0003] The existing adjusting device is poor in the sealing performance in the production well when carrying out water injection operation, and a large amount of water may leak outside the stratum, resulting in the reduction of water injection efficiency, the waste of valuable water resources, the difficulty in keeping the water injection pressure stable, the need of more energy and cost to maintain the required water injection pressure, and the increase of energy consumption, so the oil production water injection adjusting device is proposed to solve the above problems. UTILITY MODEL CONTENT

[0004] In view of the defects of the prior art, the utility model provides an oil production water injection adjusting device, which solves the problems of poor sealing performance in the production well when the existing adjusting device carries out water injection operation, a large amount of water may leak outside the stratum, resulting in the reduction of water injection efficiency, the waste of valuable water resources, the difficulty in keeping the water injection pressure stable, the need of more energy and cost to maintain the required water injection pressure, and the increase of energy consumption.

[0005] To achieve the above purpose, the utility model is realized by the following technical scheme: an oil production water injection adjusting device, comprising a water injection well, a water injection pipe is arranged in the water injection opening of the water injection well;

[0006] A sealing mechanism is installed on the water injection pipe, and the sealing mechanism is used to increase the sealing performance between the water injection pipe and the water injection well.

[0007] A center positioning mechanism is installed on the top of the water injection well to limit and lock the water injection pipe.

[0008] Preferably, the sealing mechanism comprises an expansion air bag fixed on the surface of the water injection pipe and a connecting guide pipe fixed inside the expansion air bag;

[0009] One end of the connecting guide pipe penetrates to the outside of the water injection pipe and extends into the expansion air bag, and the other end of the connecting guide pipe penetrates to the outside of the water injection pipe and is fixed in communication with a pressing valve ball arranged outside the water injection pipe, and a control valve for plugging is installed inside the connecting guide pipe outside the water injection pipe.

[0010] Preferably, the center positioning mechanism comprises a support plate arranged above the water injection well, abutting plates sliding in a symmetrical arrangement inside the support plate, and an adjusting screw rod arranged at one side of the support plate;

[0011] The screw threads of the adjusting screw rod are designed in a center-opposite structure, the abutting plates are threadedly connected with different screw threads of the adjusting screw rod through the threaded holes, and the two groups of abutting plates are driven to move away from or close to each other by rotating the adjusting screw rod.

[0012] Preferably, a rectangular hole is arranged on one side of the surface of the support plate close to the abutting plates, and a plurality of limiting guide rods are arranged in a symmetrical arrangement in the rectangular hole, the limiting guide rods are fixedly connected with the support plate, a moving hole is arranged on the surface of the abutting plate, so that the abutting plate can stably slide on the surface of the limiting guide rods, and a plurality of fixed blocks are fixedly arranged on one side of the surface of the support plate close to the adjusting screw rod, and the fixed blocks are rotatably connected with the adjusting screw rod through bearings.

[0013] Preferably, locking bolts are arranged at four corners of the support plate to fix the support plate on the top of the water injection well.

[0014] Preferably, threaded bolts are threadedly connected with the support plate through the threaded holes arranged on two sides of the support plate, and a plurality of insertion grooves are arranged on the surface of the water injection pipe for limiting and locking the threaded bolts, so that the threaded bolts are screwed into the insertion grooves of the water injection pipe to limit and lock the position of the water injection pipe.

[0015] Beneficial effects

[0016] The utility model provides a kind of oil extraction water injection adjusting device. Compared with prior art, it has the following beneficial effects:

[0017] The oil extraction water injection adjusting device can increase the sealing property of the gap between the water injection well and the water injection pipe by the arrangement of the sealing mechanism and the center positioning mechanism, avoid a large amount of water leakage to the outside of the water injection well, thereby reducing the water injection efficiency and the waste of water resources, while the water injection pressure can be kept stable, without the need for more energy and cost to maintain the required water injection pressure, reducing energy consumption and improving the use effect of the device. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the utility model;

[0019] Figure 2 It is a structure schematic view of the water injection pipe and the connecting member such as expansion air bag of the utility model;

[0020] Figure 3 It is a water injection pipe structure sectional view of the utility model.

[0021] Fig. 101, water injection well; 102, water injection pipe; 2, sealing mechanism; 201, expansion air bag; 202, connecting conduit; 203, control valve; 204, pressing valve ball; 3, center positioning mechanism; 301, support plate; 302, adjusting screw; 303, abutting plate; 304, limiting guide rod; 305, locking bolt; 306, threaded bolt. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] As shown in the drawings: Figure 1

[0024] A water injection and oil production adjusting device comprises a water injection well 101.

[0025] In the present embodiment: to solve the technical problems existing in the prior art, as disclosed in the background art above, "the existing adjusting device has poor sealing performance in the production well during water injection operation, a large amount of water may leak outside the stratum, resulting in reduced water injection efficiency, waste of valuable water resources, difficulty in maintaining stable water injection pressure, and the need for more energy and cost to maintain the required water injection pressure, thereby increasing energy consumption", in combination with use, this problem is obviously a real problem and is relatively difficult to solve. Therefore, to solve this technical problem, a sealing mechanism 2 and a center positioning mechanism 3 are added to the present application. The power equipment involved in the present product is powered by an external power source.

[0026] Further:

[0027] As shown in the drawings: Figures 1-3

[0028] In combination with the above content: the water injection well 101 is provided with a water injection pipe 102, and the sealing mechanism 2 is installed on the water injection pipe 102. The sealing mechanism 2 is used to increase the sealing performance between the water injection pipe 102 and the water injection well 101.

[0029] The sealing mechanism 2 comprises an expansion air bag 201 fixed on the surface of the water injection pipe 102 and a connecting conduit 202 fixed inside the expansion air bag 201.

[0030] ​​One end of the connecting conduit 202 penetrates to the outside of the water injection pipe 102 and extends into the expansion air bag 201, and the other end of the connecting conduit 202 penetrates to the outside of the water injection pipe 102 and is fixedly communicated with the pressing valve ball 204 arranged outside the water injection pipe 102, and the control valve 203 for plugging is arranged inside the connecting conduit 202 outside the water injection pipe 102;

[0031] The top of the water injection well 101 is provided with a center positioning mechanism 3 for limiting and locking the water injection pipe 102;

[0032] The center positioning mechanism 3 comprises a support plate 301 arranged above the water injection well 101, abutting plates 303 symmetrically arranged and sliding inside the support plate 301, and an adjusting screw rod 302 arranged at one side of the support plate 301;

[0033] The screw threads of the adjusting screw rod 302 are designed in a center-opposite structure, the abutting plates 303 are respectively threadedly connected with different screw threads of the adjusting screw rod 302 through the threaded holes, and the two groups of abutting plates 303 are driven to move away from or close to each other by rotating the adjusting screw rod 302, and a through hole matched with the water injection pipe 102 is arranged at the center of the support plate 301;

[0034] A rectangular hole is arranged at one side of the surface of the support plate 301 close to the abutting plates 303, and limit guide rods 304 symmetrically arranged are arranged in the rectangular hole, the limit guide rods 304 are fixedly connected with the support plate 301, a moving hole is arranged at the surface of the abutting plate 303, so that the abutting plate 303 can stably slide on the surface of the limit guide rod 304, and fixed blocks symmetrically arranged are fixed at one side of the surface of the support plate 301 close to the adjusting screw rod 302, and the fixed blocks are rotatably connected with the adjusting screw rod 302 through bearings;

[0035] Threaded bolts 306 are threadedly connected with the support plate 301 through threaded holes arranged at both sides of the support plate 301, and a slot for limiting and locking the threaded bolt 306 is arranged on the surface of the water injection pipe 102, and the threaded bolt 306 is screwed into the slot of the water injection pipe 102, so as to limit and lock the position of the water injection pipe 102.

[0036] In this embodiment, the water injection and adjustment device is used as follows: first, the water injection pipe 102 is placed at the water injection port of the water injection well 101, then the through hole of the support plate 301 is sleeved on the top end of the water injection pipe 102 and on the surface of the water injection pipe 102, so that the threaded bolt 306 corresponds to the slot of the water injection pipe 102, and then the threaded bolt 306 is screwed into the slot of the water injection pipe 102, so as to connect and lock the position of the water injection pipe 102 and the support plate 301;

[0037] Subsequently support plate 301 is located at the top of the injection well 101, and make the plate 303 inserted into the injection well 101 injection mouth, and then turn the adjusting screw 302, because the adjusting screw 302 and the plate 303 are threaded, and the adjusting screw 302 thread is designed in the center of the opposite structure, while turning the adjusting screw 302, and drive two groups of plate 303 away from each other, so that the plate 303 and the injection well 101 injection mouth inside wall fit, at this time the injection pipe 102 and the injection well 101 injection mouth concentric, so that the expansion of the balloon 201 position is more uniform, avoid the injection well 101 and injection pipe 102 local gap too large or too small due to different, thereby significantly improve the tightness and reliability of the seal, avoid the pressure concentration caused by the expansion of the balloon 201 deformation or rupture, improve the stability of the injection pipe 102 in the injection well 101, reduce the expansion of the balloon 201 extrusion operation, improve the use effect of the device;

[0038] Subsequently, the support plate 301 is installed and fixed, and then the pipe joint (not shown in the figure) at the top of the injection pipe 102 is connected, and then the water supply mechanism is used for water supply operation;

[0039] At the same time, by installing the press valve ball 204, the generated gas is transported into the connecting pipe 202, and then the connecting pipe 202 is discharged into the expansion of the balloon 201, and then the expansion of the balloon 201 is inflated, so that the expansion of the balloon 201 is expanded, thereby filling the gap between the injection pipe 102 and the injection well 101, until the expansion of the balloon 201 is sealed to the injection well 101 and the injection pipe 102, and then the control valve 203 is turned to block the connecting pipe 202. By this operation, the sealing of the gap between the injection well 101 and the injection pipe 102 can be increased, so as to avoid a large amount of water leakage to the outside of the injection well 101, thereby reducing the injection efficiency and reducing the waste of water resources. At the same time, the injection pressure can be kept stable, without more energy and cost to maintain the required injection pressure, reduce energy consumption, improve the use effect of the device.

[0040] It should be noted that: the side of the two groups of plate 303 away from each other is designed as an arc surface structure, so that the plate 303 and the injection well 101 injection mouth inside wall fit, the press valve ball 204 gas inlet end is provided with a one-way air inlet valve, and the connecting pipe 202 is provided with an exhaust valve for exhausting the expansion of the balloon 201. The exhaust valve is in closed state when not exhausting.

[0041] Further more;

[0042] In an alternative embodiment, locking bolts 305 are installed at the four corners of the support plate 301 to fix the support plate 301 on the top of the injection well 101. The four corners of the support plate 301 are provided with mounting holes, and the locking bolts 305 pass through the mounting holes of the support plate 301 and are fixedly connected with the injection well 101.

[0043] In this embodiment, the locking bolts 305 pass through the mounting holes of the support plate 301 and are connected with the injection well 101, so as to fix and install the support plate 301 and increase the stability of the installation of the support plate 301.

[0044] The working principle and use process of the utility model: the oil extraction water injection adjusting device, when using, first, the water injection pipe 102 is put into the water injection well 101, then the through hole of the support plate 301 is sleeved with the top of the water injection pipe 102, and the threaded pin 306 is inserted into the slot of the water injection pipe 102, which is used for connecting and locking the position of the water injection pipe 102 and the support plate 301;Then the support plate 301 is located at the top of the water injection well 101, and the abutting plate 303 is inserted into the water injection well 101, then the adjusting screw 302 is rotated, because the adjusting screw 302 and the abutting plate 303 are screw connected, and the screw thread of the adjusting screw 302 is designed as a center opposite structure, when the adjusting screw 302 is rotated, the two groups of abutting plates 303 are driven away from each other, so that the abutting plate 303 is attached to the inner wall of the water injection well 101, at this time, the water injection pipe 102 is concentric with the water injection well 101, so that the expansion air bag 201 is in a more uniform position, which avoids the local gap between the water injection well 101 and the water injection pipe 102 being too large or too small, thereby significantly improving the tightness and reliability of the seal, avoiding the deformation or rupture of the expansion air bag 201 caused by pressure concentration, improving the stability of the water injection pipe 102 in the water injection well 101, reducing the extrusion operation of the expansion air bag 201, and improving the use effect of the device;Then the mounting hole of the support plate 301 is penetrated by the locking bolt 305, and is connected with the water injection well 101, which is used for mounting and fixing the support plate 301, then the pipe joint (not shown in the figure) at the top of the water injection pipe 102 is connected, and then the water supply operation is carried out by the water supply mechanism;At the same time, the press valve ball 204 is installed, the generated gas is transported into the connecting pipe 202, and then the expansion air bag 201 is inflated, so that the expansion air bag 201 expands, thereby filling the gap between the water injection pipe 102 and the water injection well 101, until the expansion air bag 201 seals the water injection well 101 and the water injection pipe 102, then the control valve 203 is rotated to block the connecting pipe 202, through this operation, the sealing property of the gap between the water injection well 101 and the water injection pipe 102 can be improved, avoiding a large amount of water leakage to the outside of the water injection well 101, thereby reducing the water injection efficiency and the waste of water resources, and the water injection pressure can be kept stable, without more energy and cost to maintain the required water injection pressure, reducing energy consumption and improving the use effect of the device.

[0045] Meanwhile, the contents not described in detail in the specification all belong to the prior art known by those skilled in the art.

Claims

1. An oil production water injection regulating device, comprising a water injection well (101), characterized in that, The water injection well (101) is equipped with a water injection pipe (102) inside the water injection port. A sealing mechanism (2) is installed on the water injection pipe (102). The sealing mechanism (2) is used to increase the sealing between the water injection pipe (102) and the water injection well (101). The sealing mechanism (2) includes an expansion airbag (201) fixed on the surface of the water injection pipe (102) and a connecting conduit (202) fixed inside the expansion airbag (201). One end of the connecting conduit (202) extends through the outside of the water injection pipe (102) and into the expansion airbag (201). The other end of the connecting conduit (202) extends through the outside of the water injection pipe (102) and is fixedly connected to the press valve ball (204) located outside the water injection pipe (102). A control valve (203) for sealing is installed inside the connecting conduit (202) located outside the water injection pipe (102). The top of the water injection well (101) is equipped with a central positioning mechanism (3) for limiting and locking the water injection pipe (102).

2. The oilfield water injection regulating device according to claim 1, characterized in that: The central positioning mechanism (3) includes a support plate (301) disposed above the water injection well (101), a contact plate (303) symmetrically arranged inside the support plate (301) and an adjusting screw (302) disposed on one side of the support plate (301). The adjusting screw (302) has a centrally opposite thread design. The abutment plate (303) is threaded to different threads of the adjusting screw (302) through threaded holes. By rotating the adjusting screw (302), the two sets of abutment plates (303) can be driven to move away from or closer to each other. The support plate (301) has a through hole at the center that is compatible with the water injection pipe (102).

3. The oil production water injection regulating device according to claim 2, characterized in that: A rectangular hole is provided on the side of the support plate (301) near the contact plate (303), and a symmetrically arranged limiting guide rod (304) is provided in the rectangular hole. The limiting guide rod (304) and the support plate (301) are fixedly connected. A movable hole is provided on the surface of the contact plate (303) so that it can slide stably on the surface of the limiting guide rod (304). A symmetrically arranged fixing block is fixed on the side of the support plate (301) near the adjusting screw (302), and the fixing block is rotatably connected to the adjusting screw (302) through a bearing.

4. The oil production water injection regulating device according to claim 3, characterized in that: Locking bolts (305) are installed at the four corners of the support plate (301) to fix the support plate (301) to the top of the water injection well (101).

5. The oil production water injection regulating device according to claim 4, characterized in that: The support plate (301) has threaded pins (306) threadedly connected to both sides through threaded holes. The surface of the water injection pipe (102) has a slot for the threaded pins (306) to be inserted and locked. The threaded pins (306) are screwed into the slots of the water injection pipe (102) to lock the position of the water injection pipe (102).

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