CN216406784U

CN216406784U - Novel oil well casing pressure stabilizing and yield increasing device

Info

Publication number: CN216406784U
Application number: CN202122809120.4U
Authority: CN
Inventors: 孔德岩; 李雪
Original assignee: Shandong Oubote Petroleum Engineering Technology Co ltd
Current assignee: Shandong Oubote Petroleum Engineering Technology Co ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-04-29
Anticipated expiration: 2031-11-17

Abstract

The utility model discloses a novel oil well casing pressure stabilizing and yield increasing device, which adopts the technical scheme that: including the pressure stabilizer main part, the inner wall fixedly connected with of pressure stabilizer main part connects the boss, the left side outer fixed surface of connecting the boss is connected with the filter screen, the below of pressure stabilizer main part is provided with fixed knot and constructs, and fixed knot constructs including connecting pipe and connection pad, is equipped with the connecting pipe on the connection pad, and the lower extreme and the bushing of connecting pipe, upper end pass connection pad and pressure stabilizer main part inner chamber intercommunication, the bottom swing joint of connection pad and pressure stabilizer main part. The utility model has the beneficial effects that: according to the utility model, the movable block is moved, so that the fixed pin cannot be extruded by the movable block, the fixed pin can leave the pressure stabilizing device main body under the action of the spring, and the connecting disc with the connecting pipe can be easily detached for replacement; the pressure stabilizing device can be connected with sleeves with different thicknesses by disassembling and assembling connecting pipes with different sizes; moreover, the pressure stabilizing effect can be achieved, and the air pollution caused by sleeve air can be effectively reduced.

Description

Novel oil well casing pressure stabilizing and yield increasing device

Technical Field

The utility model relates to the technical field of oil well casing pressure stabilizing and yield increasing devices, in particular to a novel oil well casing pressure stabilizing and yield increasing device.

Background

The oil well is a hole drilled according to a well arrangement system planned by oil field development, the oil rises from the bottom of the well to a channel of a well head, the oil well is a hole drilled by a well drilling method, after the oil layer is drilled by a common oil well, an oil layer casing is put into the oil layer casing, oil well cement is injected into an annular space between the casing and the well wall to maintain the well wall and seal oil, gas and water layers, then the oil layer is shot by a perforating gun according to the requirements of the oil field development to form a channel, an oil pipe is put into the oil pipe, the oil is lifted from the bottom of the oil well to the well head by using a proper induced flow method, the oil casing is a steel pipe used for supporting the wall of the oil well and the wall of the gas well to ensure the normal operation of the whole oil well after the well drilling process and the well completion, and each well uses several layers of casings according to different drilling depths and geological conditions. After the casing is put into the well, cement is adopted for cementing the well, the casing is different from an oil pipe and a drill rod, can not be reused, and belongs to a disposable consumption material, so the consumption of the casing accounts for more than 70 percent of the total oil well pipe, and the casing can be divided into the following parts according to the use condition: the guide pipe, the surface casing, the technical casing and the oil layer casing are connected with a pressure stabilizing and yield increasing device on a common oil well casing.

The prior art has the following defects: the existing oil well casing pressure-stabilizing production-increasing device can not be connected with oil pipes with different sizes, and can not effectively prevent pipe gas from polluting air, the thickness and the length of the oil pipes used by different oil wells are different, the used pressure-stabilizing production-increasing device can not be suitable for all the oil pipes, and meanwhile, the pipe gas contains polluted gas and is directly discharged into the air, so that the environment is influenced.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a novel oil well casing pressure-stabilizing production-increasing device which can be connected with oil pipes with different sizes, can effectively reduce air pollution caused by casing gas and has a pressure-stabilizing function.

In order to achieve the purpose, the utility model provides the following technical scheme: a novel oil well casing pressure stabilizing and yield increasing device comprises a pressure stabilizing device main body (1), wherein a connecting boss (9) is arranged in the middle of the inner wall of the pressure stabilizing device main body (1), a filter screen (10) is fixedly connected to the inner side of the connecting boss (9), a movable plug (3) is arranged at the upper end of the pressure stabilizing device main body (1), and a fixing structure is arranged below the pressure stabilizing device main body (1);

the upper end of the inner wall of the pressure stabilizer main body (1) is provided with a convex sliding strip (6), the outer wall of the movable plug (3) is provided with a sliding groove (5) and a plurality of exhaust holes (4) which are communicated with the inside and the outside, and the sliding strip (6) is in sliding fit with the sliding groove (5); the bottom of the movable plug (3) is provided with a boss (7) which is used for being matched with a connecting hole at the top of the pressure stabilizing device main body (1);

the fixing structure comprises a connecting pipe (2) and a connecting disc (11), the connecting pipe (2) is arranged on the connecting disc (11), the lower end of the connecting pipe (2) is connected with the sleeve, the upper end of the connecting pipe penetrates through the connecting disc (11) to be communicated with the inner cavity of the pressure stabilizing device main body (1), and the connecting disc (11) is movably connected with the bottom of the pressure stabilizing device main body (1).

Preferably, the connecting disc (11) is provided with a knob (12), a spiral column (13), a movable block (15), a fixed block (16), a spring (17) and fixed pins (18), the inner wall of a connecting hole at the upper end of the pressure stabilizer main body (1) is provided with a plurality of fixed grooves, the fixed grooves are respectively in inserting fit with the fixed grooves through the plurality of fixed pins (18), and one end of each fixed pin (18) is connected with the fixed block (16) through the spring (17); the upper portion of the fixing pin (18) close to one end of the spring is provided with a movable block (15), the movable block (15) is connected with the lower end of the spiral column (13), and the upper end of the spiral column (13) is provided with a knob (12).

Preferably, the spiral column (13) is matched with a spiral groove (14) arranged on the connecting disc (11).

Preferably, the movable block (15) has a tapered structure with a thin lower end and a thick upper end.

Preferably, the outer wall of the movable block (15) is in fit contact with one end, close to the spring, of the fixed pin (18), and one end, close to the spring, of the fixed pin (18) is of an inclined surface structure.

Preferably, the outer diameter of the boss (7) at the bottom of the movable plug (3) is larger than the inner diameter of the top connecting hole of the pressure stabilizer main body (1).

Preferably, the slide bar (6) is of a T-shaped structure, and the sliding groove (5) is a T-shaped groove.

The utility model has the beneficial effects that:

1. the connecting plate can be connected with sleeves with different diameters, air pollution by sleeve gas can be effectively avoided, and the connecting plate is different from a traditional oil well sleeve pressure stabilizing and yield increasing device, the connecting pipe of the pressure stabilizing device can be easily disassembled, the connecting pipes with different sizes can be disassembled and assembled, the pressure stabilizing device can be connected with the sleeves with different thicknesses, the position of the movable block can be moved by rotating the knob, the movable block can not extrude the fixed pin, the fixed pin can leave the fixed groove in the inner wall of the connecting hole under the action of the spring, and the connecting plate with the connecting pipe can be easily disassembled for replacement, so that the device can be connected with the sleeves with different thicknesses;

2. the filter screen is arranged in the device, and the activated carbon is also arranged on the filter screen, so that impurities in the casing gas can be simply filtered when the casing gas passes through the filter screen, the pollution gas is reduced and discharged into the atmosphere through the vent holes arranged on the movable plug, and the pollution to the environment is reduced;

3. according to the utility model, the sealing and opening of the exhaust hole of the movable plug are controlled by the self pressure of the sleeve, when the pressure in the sleeve is greater than the gravity of the movable plug, the movable plug moves upwards to expose the exhaust hole, when the pressure in the sleeve is less than the gravity of the movable plug, the movable plug moves downwards to enter the pressure stabilizing device main body, and the movable plug is matched with the sliding groove through the sliding strip, so that manual intervention is not required, and the device is more convenient and safer to use.

Drawings

FIG. 1 is an overall schematic view of the present invention;

FIG. 2 is a schematic bottom view of the present invention;

FIG. 3 is a schematic structural view of the upper part of the present invention;

FIG. 4 is a schematic view of the structure of the lower part of the present invention;

FIG. 5 is an enlarged view of portion A of FIG. 4;

FIG. 6 is an enlarged view of a portion of the slide and the chute of the movable plug;

FIG. 7 is a schematic structural view of a second embodiment of the upper portion of the present invention;

in the figure: 1. a voltage stabilizer main body; 2. a connecting pipe; 3. a movable plug; 4. an exhaust hole; 5. a chute; 6. a slide bar; 7. a boss; 8. a gasket; 9. connecting the bosses; 10. a filter screen; 11. a connecting disc; 12. a knob; 13. a helical column; 14. a helical groove; 15. a movable block; 16. a fixed block; 17. a spring; 18. and fixing the pin.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Embodiment 1, referring to fig. 1 to 6, the novel oil well casing pressure stabilizing and yield increasing device provided by the utility model comprises a pressure stabilizing device main body 1, wherein a connecting boss 9 is arranged in the middle of the inner wall of the pressure stabilizing device main body 1, a filter screen 10 is fixedly connected to the inner side of the connecting boss 9, a movable plug 3 is arranged at the upper end of the pressure stabilizing device main body 1, and a fixing structure is arranged below the pressure stabilizing device main body 1;

the upper end of the inner wall of the pressure stabilizing device main body 1 is provided with a convex sliding strip 6, the outer wall of the movable plug 3 is provided with a sliding groove 5 and a plurality of vent holes 4 which are communicated with the inside and the outside, and the sliding strip 6 is in sliding fit with the sliding groove 5; the bottom of the movable plug 3 is provided with a boss 7 which is used for matching with a connecting hole at the top of the pressure stabilizing device main body 1;

the fixing structure comprises a connecting pipe 2 and a connecting disc 11, the connecting pipe 2 is arranged on the connecting disc 11, the lower end of the connecting pipe 2 is connected with the sleeve, the upper end of the connecting pipe penetrates through the connecting disc 11 to be communicated with the inner cavity of the pressure stabilizing device main body 1, and the connecting disc 11 is movably connected with the bottom of the pressure stabilizing device main body 1.

The connecting disc 11 is provided with a knob 12, a spiral column 13, a movable block 15, a fixed block 16, a spring 17 and fixed pins 18, the inner wall of a connecting hole at the upper end of the voltage stabilizer main body 1 is provided with a plurality of fixed slots, the fixed slots are respectively matched with the fixed slots in an inserting manner through the plurality of fixed pins 18, and one end of each fixed pin 18 is connected with the fixed block 16 through the spring 17; a movable block 15 is arranged above one end, close to the spring, of the fixing pin 18, the movable block 15 is connected with the lower end of the spiral column 13, and a knob 12 is arranged at the upper end of the spiral column 13. The spiral column 13 is matched with a spiral groove 14 arranged on the connecting disc 11, and particularly, the spiral column can move up and down by adopting thread matching; in addition, the movable block 15 has a tapered structure with a thin lower end and a thick upper end; the outer wall of above-mentioned movable block 15 and the one end cooperation contact that fixed pin 18 is close to the spring, just fixed pin 18 one end that is close to the spring be the inclined plane structure, toper structure and inclined plane structure, extrusion that can be better promote fixed pin 18 and remove.

In addition, the external diameter of the boss 7 at the bottom of the movable plug 3 is larger than the internal diameter of the top connecting hole of the pressure stabilizer main body 1, so that the movable plug can be limited and kept in the inner cavity of the pressure stabilizer main body 1 to avoid falling off, the upper side is matched with the sliding groove and the sliding strip, the sliding groove is only arranged on one side of the movable plug 3 and is not arranged to the top, the movable plug 3 can be ensured not to enter the inner cavity of the pressure stabilizer main body 1 when falling, the sliding strip 6 is of a T-shaped structure, and the sliding groove 5 is a T-shaped groove.

When the device is used, when the pressure in the sleeve needs to be stabilized through the device, the device can be connected with the sleeve through the connecting pipe 2, the valve is arranged, when the pressure in the sleeve is overlarge, the valve is opened, the movable plug 3 can move upwards along the sliding groove 5 through the sliding strip 6 under the pushing of the gas pressure in the sleeve, the exhaust hole 4 formed in the movable plug 3 can be exposed as the movable plug 3 gradually moves upwards, redundant gas in the sleeve can be exhausted through the exhaust hole 4, when the pressure in the sleeve is stable, the movable plug 3 can fall back under the action of gravity, the exhaust hole 4 is sealed again, the purpose of stabilizing the pressure is achieved, meanwhile, the boss 7 plays a limiting role in the movable plug 3 and can be prevented from being separated from the device, and the sealing gasket 8 is arranged on the boss 7 to ensure the sealing effect. In addition, still be provided with the filter screen 10 that has active carbon in the device inside, filter screen 10 can filter the sleeve pipe gas, reduces the interior toxic gas of sleeve pipe and passes through exhaust hole 4 and exhaust the air, reduces the pollution to the environment. In addition, the thickness of the casing used in different oil wells is different, in order to enable the device to be connected with casings with different thicknesses, a tool can be used for rotating the knob 12, the knob 12 can drive the spiral column 13 to rotate in the spiral groove 14 while rotating, the spiral column 13 can gradually move upwards along with the rotation of the spiral column 13, the spiral column 13 can drive the movable block 15 to move upwards while moving upwards, when the movable block 15 moves upwards, the movable block 15 can be gradually separated from the fixed pin 18, when the fixed pin 18 loses the external force provided by the movable block 15, the fixed pin 18 can be moved out of the pressure stabilizer main body 1 under the action of the spring 17 and is contained in the connecting disc 11, another fixed pin 18 is contained in the connecting disc 11 in the same way, the connecting disc 11 can be easily taken out of the pressure stabilizer main body 1 after losing the fixation of the fixed pin 18, so that the connecting discs 2 with different sizes can be replaced by replacing the connecting disc 11, the practicability of the device is improved, when the connecting disc 11 needs to be installed, the movable block 15 is moved in the above mode, the fixing pin 18 is pushed into the matched fixing groove again, and then the connecting disc 11 can be fixed again.

Embodiment 2, the novel oil well casing pressure stabilizing and yield increasing device provided by the utility model comprises a pressure stabilizing device main body 1, wherein a connecting boss 9 is arranged in the middle of the inner wall of the pressure stabilizing device main body 1, a filter screen 10 is fixedly connected to the inner side of the connecting boss 9, a movable plug 3 is arranged at the upper end of the pressure stabilizing device main body 1, and a fixing structure is arranged below the pressure stabilizing device main body 1;

The difference from the embodiment 1 is that: referring to fig. 7, the top of the movable plug 3 can also be provided with an upper boss, the outer diameter of the upper boss is larger than the inner diameter of the top connecting hole of the voltage stabilizing device main body 1, the movable plug can be limited, and the phenomenon that the movable plug falls into the inner cavity of the voltage stabilizing device main body 1 due to the fact that the sliding groove and the sliding strip are matched to fall off is avoided, so that the failure of the device is caused.

The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solution described above. Therefore, any simple modifications or equivalent substitutions made in accordance with the technical solution of the present invention are within the scope of the claims of the present invention.

Claims

1. The utility model provides a novel oil well casing steady voltage increase production device, includes voltage regulator device main part (1), its characterized in that: a connecting boss (9) is arranged in the middle of the inner wall of the pressure stabilizing device main body (1), a filter screen (10) is fixedly connected to the inner side of the connecting boss (9), a movable plug (3) is arranged at the upper end of the pressure stabilizing device main body (1), and a fixing structure is arranged below the pressure stabilizing device main body (1);

2. The novel oil well casing pressure-stabilizing production-increasing device of claim 1, which is characterized in that: the connecting disc (11) is provided with a knob (12), a spiral column (13), a movable block (15), a fixed block (16), a spring (17) and fixed pins (18), the inner wall of a connecting hole in the upper end of the pressure stabilizer main body (1) is provided with a plurality of fixed grooves, the fixed grooves are respectively matched with the fixed grooves in an inserting manner through the plurality of fixed pins (18), and one end of each fixed pin (18) is connected with the fixed block (16) through the spring (17); the upper portion of the fixing pin (18) close to one end of the spring is provided with a movable block (15), the movable block (15) is connected with the lower end of the spiral column (13), and the upper end of the spiral column (13) is provided with a knob (12).

3. The novel oil well casing pressure-stabilizing production-increasing device of claim 2, characterized in that: the spiral column (13) is matched with a spiral groove (14) arranged on the connecting disc (11).

4. The novel oil well casing pressure-stabilizing production-increasing device of claim 2, characterized in that: the movable block (15) is of a conical structure with a thin lower end and a thick upper end.

5. The novel oil well casing pressure-stabilizing production-increasing device of claim 4, wherein: the outer wall of movable block (15) and fixed pin (18) are close to the one end cooperation contact of spring, just fixed pin (18) be close to the one end of spring and be the inclined plane structure.

6. The novel oil well casing pressure-stabilizing production-increasing device of claim 1, which is characterized in that: the outer diameter of a boss (7) at the bottom of the movable plug (3) is larger than the inner diameter of a connecting hole at the top of the pressure stabilizer main body (1).

7. The novel oil well casing pressure-stabilizing production-increasing device of claim 1, which is characterized in that: the slide bar (6) is of a T-shaped structure, and the sliding groove (5) is a T-shaped groove.