CN219974471U - Deep coal seam pumping unit drainage gas production equipment - Google Patents
Deep coal seam pumping unit drainage gas production equipment Download PDFInfo
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- CN219974471U CN219974471U CN202321400900.6U CN202321400900U CN219974471U CN 219974471 U CN219974471 U CN 219974471U CN 202321400900 U CN202321400900 U CN 202321400900U CN 219974471 U CN219974471 U CN 219974471U
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- sedimentation
- plunger
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- 239000003245 coal Substances 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000005086 pumping Methods 0.000 title claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 67
- 238000004062 sedimentation Methods 0.000 claims abstract description 33
- 239000004576 sand Substances 0.000 claims abstract description 9
- 230000002265 prevention Effects 0.000 claims abstract description 8
- 230000008878 coupling Effects 0.000 claims description 19
- 238000010168 coupling process Methods 0.000 claims description 19
- 238000005859 coupling reaction Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 239000002861 polymer material Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 11
- 230000009471 action Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000002817 coal dust Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model discloses drainage gas production equipment of a deep coal seam pumping unit, which comprises a gas sedimentation prevention device, a long plunger anti-seizing pump and a lining oil pipe, wherein the gas sedimentation prevention device is arranged at the lower part of the long plunger anti-seizing pump, and the upper part of the long plunger anti-seizing pump is connected with the lining oil pipe; the gas-proof sedimentation device comprises a liquid inlet screen pipe, a sedimentation pipe and a sand setting pipe; a central pipe is arranged in the liquid inlet sieve tube and the sedimentation pipe, the top of the central pipe is connected with the upper joint, and the bottom of the central pipe is connected with the centralizing plug; the central pipe and the sedimentation pipe form an annular space; a first liquid inlet hole is formed in the liquid inlet screen pipe; the central tube is provided with a second liquid inlet; a third liquid inlet hole is formed in the lower end face of the centralizing plug; the well liquid enters the device through the first liquid inlet hole, after reversing, the well liquid descends along an annular space formed by the central tube and the sedimentation tube, and then enters the oil pump after reversing through the second liquid inlet hole on the central tube and the third liquid inlet hole which is rightly blocked.
Description
Technical Field
The utility model relates to drainage and gas production equipment of a deep coal seam pumping unit.
Background
At present, most coal bed gas exploitation well conditions are in a middle shallow layer, well deviation is small, a common tubular pump is generally adopted, and the coal bed gas exploitation well conditions are matched with a conventional oil pipe and a sucker rod for use. The common oil pump mainly comprises a pump barrel, a plunger, a fixed valve, an oil inlet valve, an oil outlet valve, an upper coupling, a lower coupling and a double-thread joint, and is matched with the pump barrel and the plunger. With the increase of the gas-liquid ratio, the deepening of pump hanging and small liquid amount, the problems are more and more remarkable, and the problems are mainly represented in the following aspects:
(1) card pump: the discharge capacity is small, the capability of carrying pulverized coal is strong, and pump blockage is easy to occur.
(2) And (3) eccentric grinding: the pump hangs deeply, and the pole is crooked, produces the friction with oil pipe contact, because coal bed gas well medium is water, and lubricity is poor, and frictional resistance is big, further aggravates pole crooked and wearing and tearing, can finally lead to the sucker rod to break and take off or oil pipe grinds and wears out and leak.
(3) Air lock: the coalbed methane enters the normal mining period, the liquid level is low, the displacement is small, the gas content is increased, the fullness of a pump cavity is reduced, the pump efficiency is affected, and gas lock failure can be generated when the gas lock is serious.
Disclosure of Invention
The utility model aims to provide drainage gas production equipment suitable for deep coal seam pumping units, which is characterized in that a gas sedimentation prevention device, a long plunger anti-blocking pump and an inner lining oil pipe anti-eccentric wear technology are additionally arranged, so that the efficiency and the service life of a lifting machine gas production system are improved.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the drainage gas production equipment of the deep coal seam pumping unit comprises a gas sedimentation prevention device, a long plunger anti-seizing pump and a lining oil pipe, wherein the gas sedimentation prevention device is arranged at the lower part of the long plunger anti-seizing pump, and the upper part of the long plunger anti-seizing pump is connected with the lining oil pipe; the gas-proof sedimentation device comprises a liquid inlet screen pipe, a sedimentation pipe and a sand setting pipe; a central pipe is arranged in the liquid inlet sieve tube and the sedimentation pipe, the top of the central pipe is connected with the upper joint, and the bottom of the central pipe is connected with the centralizing plug; the central pipe and the sedimentation pipe form an annular space; a first liquid inlet hole is formed in the liquid inlet screen pipe; the central tube is provided with a second liquid inlet; a third liquid inlet hole is formed in the lower end face of the centralizing plug; the well liquid enters the device through the first liquid inlet hole, after reversing, the well liquid descends along an annular space formed by the central tube and the sedimentation tube, and then enters the oil pump after reversing through the second liquid inlet hole on the central tube and the third liquid inlet hole which is rightly blocked.
As a further technical scheme, the long plunger anti-blocking pump comprises a plunger, a pump cylinder and an elongated cylinder, wherein the plunger is a long plunger, the pump cylinder is a short pump cylinder, and the pump cylinder and the long plunger are always in a sealing fit state in the reciprocating motion process of the plunger.
As a further technical scheme, the lower part of the pump cylinder is also connected with an extension cylinder, and the inner diameter of the extension cylinder is 1-2mm larger than the outer diameter of the plunger.
Further, the lining oil pipe comprises an oil pipe coupling, a base pipe and a liner pipe, wherein the lower part of the oil pipe coupling is connected with the base pipe, and the liner pipe made of high polymer materials is arranged in the base pipe; the base pipe is connected with the long plunger anti-seize pump.
As a further technical scheme, the liquid inlet screen pipe is provided with connecting threads at two ends and a first liquid inlet hole is processed on the outer wall of the middle part.
As a further technical scheme, the central tube, the upper end is equipped with the external screw thread, and the lower extreme is equipped with the external screw thread, and its outer wall that is close to the lower extreme is equipped with the second feed liquor hole.
As a further technical scheme, the centralizing plug is provided with internal threads on the upper part, the outer wall is provided with a plurality of diversion trenches, and the lower end face of the centralizing plug is provided with a third liquid inlet.
As a further technical scheme, the plurality of diversion trenches are uniformly distributed.
The utility model has the beneficial effects that:
the long plunger anti-sticking pump is provided with the anti-gas sedimentation device at the lower part, and the upper part is matched with a lining oil pipe for use, so that the well liquid is subjected to gas-liquid and solid-liquid separation before entering the pump, thereby ensuring higher pump efficiency and preventing sticking; and the lining oil pipe protects the oil pipe and the sucker rod, avoids eccentric wear, can effectively prevent corrosion and scaling, and prolongs the service life of the mechanical system.
Drawings
FIG. 1 is a schematic sectional view of an anti-gas-settling device of the present utility model;
FIG. 2 is a schematic cross-sectional view of the long plunger anti-seize pump of this utility model;
FIG. 3 is a schematic cross-sectional view of a lined tubing of the present utility model;
FIG. 4 is a schematic view of the overall assembly of the present utility model;
in the figure: 1 upper joint, 2 first oil pipe coupling, 3 feed liquor pipe, 4 second oil pipe coupling, 5 settling leg, 6 central tube, 7 centralizing block, 8 third oil pipe coupling, 9 sand setting pipe, 10 guiding block, 11 plunger upper valve cover, 12 upper traveling valve, 13 plunger joint, 14 plunger, 15 plunger lower valve cover, 16 lower traveling valve, 17 valve seat pipe plug, 18 upper joint, 19 pump barrel, 20 middle joint, 21 extension barrel, 22 lower joint, 23 fixed valve, 24 fixed valve cover, 25 fixed valve joint, 26 oil pipe coupling, 27 base pipe, 28 liner pipe.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular forms also are intended to include the plural forms unless the present utility model clearly dictates otherwise, and furthermore, it should be understood that when the terms "comprise" and/or "include" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "upper", "lower", "left" and "right" in the present utility model, if they mean only the directions of upper, lower, left and right in correspondence with the drawings themselves, are not limiting in structure, but merely serve to facilitate description of the present utility model and simplify description, rather than to indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
The terms "mounted," "connected," "secured," and the like are to be construed broadly and refer to either a fixed connection, a removable connection, or an integral body, for example; the terms are used herein as specific meanings as understood by those of ordinary skill in the art, and are not limited to the following terms.
The embodiment discloses drainage gas production equipment of the deep coal seam pumping unit, which is shown in fig. 4, and comprises a gas sedimentation prevention device, a long plunger anti-seize pump and a lining oil pipe; the long plunger anti-blocking pump is additionally provided with an anti-gas sedimentation device to separate gas, liquid and solid, reduce the probability of feeding gas and coal powder into the pump and prevent blocking the pump and the air lock; the anti-seizing performance is improved by adopting a long plunger anti-seizing pump; the long plunger anti-seize pump adopts lining oil pipe to protect oil pipe and sucker rod and prevent abrasion and corrosion. The structure of each component is as follows:
1. anti-gas sedimentation device
The anti-gas settling device adopts a double-pipe sleeving structure, as shown in fig. 1, and comprises an upper joint 1, a first oil pipe coupling 2, a second oil pipe coupling 4, a third oil pipe coupling 8, a liquid inlet screen pipe 3, a settling pipe 5, a central pipe 6, a second liquid inlet 6-1, a centralizing plug 7, a sand settling pipe 9, a guide plug 10 and a liquid inlet 3-1;
the upper joint 1 is of an annular cylindrical structure, an external thread of the outer ring of the upper joint 1 is connected with the liquid inlet screen pipe 3 through the oil pipe coupling 2, the other end of the liquid inlet screen pipe 3 is connected with the upper part of the oil pipe coupling 4 through threads, and the lower part of the oil pipe coupling 4 is connected with the upper part of the sedimentation pipe 5; the lower part of the sedimentation pipe 5 is connected with a sand setting pipe 9 through threads, and the other end of the sand setting pipe 9 is connected with a guide plug 10; namely, the upper joint 1, the oil pipe coupling 2, the liquid inlet screen pipe 3, the oil pipe coupling 4, the sedimentation pipe 5 and the sand setting pipe 9 are coaxially arranged and are sequentially connected to form a whole;
a liquid inlet screen pipe 3, wherein a first liquid inlet hole 3-1 is processed on the outer wall of the liquid inlet screen pipe; the outer wall of the lower end of the central tube 6 is provided with a second liquid inlet 6-1; four diversion trenches are arranged on the outer wall of the centralizing plug 7, the diversion trenches are uniformly distributed, and a third liquid inlet 7-1 is arranged on the end face; the central pipe 6 is arranged inside the liquid inlet screen pipe 3 and the sedimentation pipe 5; the well fluid enters the device through the first fluid inlet hole 3-1 of the fluid inlet screen pipe 3, after reversing, the well fluid descends along an annular space formed by the central pipe 6 and the sedimentation pipe 5, and then enters the oil pump after reversing through the second fluid inlet hole 6-1 on the central pipe 6 and the third fluid inlet hole 7-1 of the centralizing plug 7.
2. Long plunger anti-seize pump
The long plunger anti-seize pump adopts long plunger to match with short pump barrel, including upper valve housing 11 of plunger, upper traveling valve 12, plunger joint 13, plunger 14, lower valve housing 15 of plunger, lower traveling valve 16, valve seat tube plug 17, upper joint 18, pump barrel 19, middle joint 20, lengthened barrel 21, lower joint 22, fixed valve 23, fixed valve housing 24 and fixed valve joint 25; an upper traveling valve 12 is arranged in the plunger upper valve cover 11, and the plunger upper valve cover 11 is connected with a plunger joint 13; the upper joint 18 is connected with a lining oil pipe and a pump cylinder 19, the lower part of the plunger joint 13 is connected with the plunger 14, the plunger 14 is arranged in the pump cylinder 19 and the lengthened cylinder 21, the pump cylinder 19 and the lengthened cylinder 21 are connected through an intermediate joint 20, the bottom of the plunger 14 is connected with a plunger lower valve cover 15, a lower traveling valve 16 is arranged in the plunger lower valve cover 15, the plunger lower valve cover 15 is connected with a valve seat pipe plug 17, the lengthened cylinder 21 is connected with the upper part of a lower joint 22 through threads, the lower part of the lower joint 22 is connected with a fixed valve cover 24, a fixed valve 23 is arranged in the fixed valve cover 24, and the fixed valve cover 24 is connected with the fixed valve joint 25; wherein the upper valve housing 11, the upper traveling valve 12, the plunger joint 13, the plunger 14, the lower valve housing 15, the lower traveling valve 16, the valve seat pipe plug 17 are arranged in the pump barrel 19 and the lengthening barrel 21 along with the sucker rod;
the plunger 14 is a long plunger, and the pump barrel 19 is a short pump barrel; the inner diameter of the lengthened cylinder 21 is 1-2mm larger than the outer diameter of the plunger 14.
3. Lining oil pipe
The lining oil pipe is a standard oil pipe, and a layer of high polymer material is lined in the inner hole, wherein the high polymer material comprises an oil pipe coupling 26, a base pipe 27 and a liner pipe 28; the lower part of the tubing collar 26 is connected with a base pipe 28, and a liner pipe 28 is arranged in the base pipe 27, wherein the thickness of the liner pipe 28 is 3-4mm.
The installation method of the device is as follows:
and (2) mounting: the long plunger anti-seize pump fixed valve joint 25 is connected with the upper joint 1 of the anti-gas settling device, the long plunger anti-seize pump upper joint 18 is connected with the outer pipe thread at the lower end of the lining oil pipe, and the long plunger anti-seize pump upper joint is downwards arranged along with the lining oil pipe; the upper valve cover 11 of the plunger is fixedly connected to the lower part of the sucker rod, and the upper valve cover 11 of the plunger, the upper traveling valve 12, the plunger joint 13, the plunger 14, the lower valve cover 15 of the plunger, the lower traveling valve 16 and the valve seat pipe plug 17 are arranged in the pump barrel 19 and the lengthening barrel 21 along with the sucker rod;
in operation, well fluid enters the anti-gas sedimentation device through the fluid inlet holes of the fluid inlet screen pipe 3, after reversing, flows down along an annular space formed by the central pipe 6 and the sedimentation pipe 5, enters the central pipe through the fluid inlet holes of the central pipe 6 and the fluid inlet holes of the righting and blocking lower end face, and enters the long plunger anti-blocking pump after reversing; in this process, the gas is separated into gas and liquid once when passing through the liquid inlet holes of the liquid inlet screen pipe 3, and bubbles rise when descending along the annular channel, and separated into gas and liquid twice when passing through the liquid inlet holes of the central pipe 6, and separated into gas and liquid once. Solid particles such as coal dust and the like flow along with the flow direction and the upward and downward processes, and sink into the lower sand setting tail pipe.
In the reciprocating motion process of the plunger 14 of the long plunger anti-seizing pump, the pump cylinder 19 is always in a sealing fit state with the plunger 14, so that solid particles such as coal dust are prevented from entering the pump cylinder, and the pump is prevented from seizing.
The liner tube 28 of the liner oil tube forms soft and hard sliding friction with the sucker rod, and protects the base tube 27 and the sucker rod from abrasion and disconnection;
the long plunger anti-sticking pump lower part installation prevents that the gas subsides device, and upper portion supporting connection inside lining oil pipe uses, and well liquid carries out gas-liquid, solid-liquid separation earlier before advancing the pump, guarantees higher pump efficiency, prevents the jamming. The lining oil pipe protects the oil pipe and the sucker rod, avoids eccentric wear, can effectively prevent corrosion and scaling, and prolongs the service life of the mechanical production system.
Finally, it is pointed out that relational terms such as first and second are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The drainage gas production equipment of the deep coal seam pumping unit is characterized by comprising a gas sedimentation prevention device, a long plunger anti-seizing pump and a lining oil pipe, wherein the gas sedimentation prevention device is arranged at the lower part of the long plunger anti-seizing pump, and the upper part of the long plunger anti-seizing pump is connected with the lining oil pipe; the gas-proof sedimentation device comprises a liquid inlet screen pipe, a sedimentation pipe and a sand setting pipe; a central pipe is arranged in the liquid inlet sieve tube and the sedimentation pipe, the top of the central pipe is connected with the upper joint, and the bottom of the central pipe is connected with the centralizing plug; the central pipe and the sedimentation pipe form an annular space; a first liquid inlet hole is formed in the liquid inlet screen pipe; the central tube is provided with a second liquid inlet; a third liquid inlet hole is formed in the lower end face of the centralizing plug; the well liquid enters the device through the first liquid inlet hole, after reversing, flows downwards along an annular space formed by the central tube and the sedimentation tube, and then enters the long plunger anti-blocking pump through the second liquid inlet hole on the central tube and the third liquid inlet hole which is rightly blocked.
2. The deep coal seam pumping unit drainage gas production device of claim 1, wherein the long plunger anti-seize pump comprises a plunger, a pump barrel and an elongated barrel, the plunger is a long plunger, the pump barrel is a short pump barrel, and the pump barrel is in sealing fit with the long plunger all the time in the reciprocating motion process of the plunger.
3. The deep coal seam pumping unit drainage gas production device of claim 2, wherein the lower part of the pump barrel is also connected with an extension barrel, and the inner diameter of the extension barrel is 1-2mm larger than the outer diameter of the plunger.
4. A deep coal seam pumping unit drainage gas production facility as claimed in claim 2 wherein a fixed valve connector is provided at the bottom of the long plunger anti-seize pump, the fixed valve connector being connected to the upper connector of the anti-gas settling device.
5. The deep coal seam pumping unit drainage gas production device of claim 1, wherein the lining oil pipe comprises an oil pipe coupling, a base pipe and a liner pipe, the lower part of the oil pipe coupling is connected with the base pipe, and the liner pipe made of high polymer materials is arranged in the base pipe.
6. A deep coal seam pumping unit drainage gas production facility as claimed in claim 5 wherein the base pipe outer ring is connected to the upper connector of the long plunger anti-seize pump.
7. The deep coal seam pumping unit drainage gas production facility of claim 1, wherein the liquid inlet screen pipe is provided with connecting threads at two ends, and the outer wall of the middle part is provided with a first liquid inlet.
8. The deep coal seam pumping unit drainage gas production facility of claim 1, wherein the upper end of the central tube is provided with external threads, the lower end is provided with external threads, and the outer wall of the central tube, which is close to the lower end, is provided with a second liquid inlet.
9. The deep coal seam pumping unit drainage gas production device of claim 1, wherein the upper part of the centralizing plug is provided with internal threads, the outer wall is provided with a plurality of diversion trenches, and the lower end face of the diversion trenches is provided with a third liquid inlet.
10. A deep coal seam pumping unit drainage gas production facility as claimed in claim 9 wherein said plurality of channels are evenly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321400900.6U CN219974471U (en) | 2023-06-03 | 2023-06-03 | Deep coal seam pumping unit drainage gas production equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321400900.6U CN219974471U (en) | 2023-06-03 | 2023-06-03 | Deep coal seam pumping unit drainage gas production equipment |
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| Publication Number | Publication Date |
|---|---|
| CN219974471U true CN219974471U (en) | 2023-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321400900.6U Active CN219974471U (en) | 2023-06-03 | 2023-06-03 | Deep coal seam pumping unit drainage gas production equipment |
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| CN (1) | CN219974471U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117569778A (en) * | 2024-01-15 | 2024-02-20 | 东营垣发石油科技有限公司 | Projectile perforation and sand-carrying oil extraction integrated tubular column and process |
-
2023
- 2023-06-03 CN CN202321400900.6U patent/CN219974471U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117569778A (en) * | 2024-01-15 | 2024-02-20 | 东营垣发石油科技有限公司 | Projectile perforation and sand-carrying oil extraction integrated tubular column and process |
| CN117569778B (en) * | 2024-01-15 | 2024-04-05 | 东营垣发石油科技有限公司 | Projectile perforation and sand-carrying oil extraction integrated tubular column and process |
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