CN203770102U - Special sand-prevention and leak-proof drainage extraction tubing pump for coal-bed gas well drainage extraction - Google Patents
Special sand-prevention and leak-proof drainage extraction tubing pump for coal-bed gas well drainage extraction Download PDFInfo
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- CN203770102U CN203770102U CN201420174679.1U CN201420174679U CN203770102U CN 203770102 U CN203770102 U CN 203770102U CN 201420174679 U CN201420174679 U CN 201420174679U CN 203770102 U CN203770102 U CN 203770102U
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- pump
- sand
- bed gas
- gas well
- standing valve
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Abstract
The utility model discloses a special sand-prevention and leak-proof drainage extraction tubing pump for coal-bed gas well drainage extraction. The bottom of an oil tube is provided with a sand leakage cover. A standing valve assembly penetrates through the oil tube and is placed on a groove of the sand leakage cover. A gap is formed between the standing valve assembly and the oil tube. A plunger assembly partially penetrates through the standing valve assembly. The sand leakage cover is sleeved with an oil-tube short segment, and the oil-tube short segment is fixed to the bottom of the oil tube. The special sand-prevention and leak-proof drainage extraction tubing pump is simple in structure and convenient to use; in the process of pumping water in a coal mine, the problems of leakage and clamping by sand can be effectively avoided. In this way, the usage effect of the pump is greatly improved, and the service life of the pump is greatly prolonged. Accordingly, project progress and project quality can be guaranteed, and therefore the pump has extremely high practical value.
Description
Technical field
The utility model relates to the special sand control lost circulation prevention mining tubing pump of a kind of coal bed gas well mining, belongs to coal bed gas extraction Manifold technology field.
Background technique
Along with the foundation of Qinshui Basin In Shanxi Province coal-seam gas demonstration area, indicate the breakthrough of China at CBM exploration and development technical elements, form the technical system of a set of applicable CBM exploration and development, also promote coal-seam gas simultaneously and be transitioned into the production phase from the exploration phase, more than 3000 mouthful of China's coal bed gas well at present, wherein mining well majority utilizes conventional gas and oil exploitation tubing pump to carry out mining operation, but because of the difference of coal-seam gas self reservoir properties feature and conventional gas and oil reservoir, make coal bed gas extraction tubing pump often occur the phenomenon that sand card and pump efficiency are not high, concrete problem is as follows: coal dust or sand grains that row is returned on stratum are deposited on tubing pump standing valve, tubing pump extraction process is leaked, finally cause pump efficiency on the low side, the problem of even not taking out water when serious, sand grains and coal dust that row is returned on stratum enter plunger, make holddown in oil pump running process, cause oil pump running not steady.
Summary of the invention
The purpose of this utility model is: a kind of practicality, the special sand control lost circulation prevention mining tubing pump of coal bed gas well mining are easily provided, and effectively sand prevention card and lost circulation prevention, guarantee construction speed, to overcome the deficiencies in the prior art.
The technical solution of the utility model
The sand control lost circulation prevention mining tubing pump that a kind of coal bed gas well mining is special, be provided with and let out husky lid in oil pipe bottom, standing valve assembly penetrates in oil pipe and is placed on the groove of letting out husky lid, standing valve assembly and oil pipe form space, plunger piston assembly part penetrates in standing valve assembly, and tubing nipple entangles lets out the husky oil pipe bottom of covering and be fixed on.
In the special sand control lost circulation prevention mining tubing pump of aforesaid coal bed gas well mining, at standing valve assembly and let out between husky lid and be provided with spring.
In the special sand control lost circulation prevention mining tubing pump of aforesaid coal bed gas well mining, under to let out Sha Gai cross section be spill, be provided with through hole letting out husky lid middle part, on the convex surface of letting out husky lid, be provided with ring-type and let out husky hole, in ring-type is let out husky hole, be provided with one-way valve.
In the special sand control lost circulation prevention mining tubing pump of aforesaid coal bed gas well mining, the top that ring-type is let out husky hole is hemisphere.
In the special sand control lost circulation prevention mining tubing pump of aforesaid coal bed gas well mining, described standing valve assembly adopts oil gas tubular type pump structure, is followed successively by from top to bottom pump barrel, valve bonnet, standing valve and valve seat, and this valve seat is convex structure.
In the special sand control lost circulation prevention mining tubing pump of aforesaid coal bed gas well mining, plunger piston assembly adopts two traveling valve structures, and plunger piston assembly top and bottom are traveling valve, and wherein the traveling valve of lower end is provided with a plunger, below plunger with rubber washer.
In the special sand control lost circulation prevention mining tubing pump of aforesaid coal bed gas well mining, let out husky lid and oil pipe and tubing nipple by screwed connection.
Know-why of the present utility model is: sand control lost circulation prevention mining tubing pump special this coal bed gas well mining is put into well fixing, then by liftout plunger assembly (this principle and injector principle are similar), now in standing valve assembly, pressure diminishes, water containing coal sand flows in standing valve assembly cavity by tubing nipple, and then depression of plunger assembly, standing valve in standing valve assembly is shut standing valve assembly inflow entrance, water containing coal sand flow in oil pipe by plunger piston assembly, by repeating drive plunger assembly, can in oil pipe, deposit more and more until flow out outside well by oil pipe containing the water of coal sand, wherein lost circulation prevention principle is to use after a period of time at this mining tubing pump, the coal grain returning out in coal seam and the grains of sand often can be deposited on the valve seat of standing valve, make valve seat leakage, cause pump efficiency to reduce, now face beam hanger for pumping machine releasably, control plunger and squeeze into standing valve assembly downwards, under the extruding of plunger, standing valve assembly moves downward after certain distance (at standing valve assembly and let out between husky lid and be provided with spring, this standing valve assembly can be issued to and let out husky lid contact position), manipulate on plunger and carry again, under the effect of spring, standing valve assembly is upspring, float with coal grain and sand grains above valve seat, while finally utilizing plunger pump up water, extract out together with water in cutter oil pipe, if coal sand is more on valve seat, can repeat aforesaid operations, until valve seat is completely unimpeded, and sand prevention card principle is, in the mining tubing pump of original technology, standing valve assembly and oil pipe are Spielpassung, after within handle contains the water suction oil pipe of coal sand, owing to containing a large amount of coal sand, this coal sand is deposited on because gravity returns between oil pipe and standing valve assembly and plunger piston assembly, can not be along with water flows into outside well, in repetition extraction process, a large amount of coal sand can be deposited between oil pipe and standing valve assembly and plunger piston assembly, cause the holddown pump that even weares and teares, and pass through the utility model, be provided with and let out husky lid in oil pipe bottom, making has a gap between oil pipe and standing valve assembly and plunger piston assembly, coal sand can be deposited on and unload sand and cover, in the time that the deadweight of coal sand and the pressure of water are enough large, can impel the one-way valve of letting out in husky lid to open, coal sand flows in tubing nipple until shaft bottom again by one-way valve, thereby realize sand prevention card problem.
Owing to adopting technique scheme, compared with prior art, the utility model is simple in structure, easy to use, in extraction coal WIH process, can effectively avoid lost circulation prevention and sand prevention card problem, greatly increase using effect and the service time of this pump, thereby ensured project progress and construction quality, there is fine use value.
Brief description of the drawings
Accompanying drawing 1 is the utility model structural representation;
Accompanying drawing 2 is sand prevention lid structural representations in the utility model;
Accompanying drawing 3 is standing valve assembly structure schematic diagram in the utility model;
Accompanying drawing 4 is plunger assembly structure schematic diagram in the utility model.
Being labeled as in accompanying drawing: 1-plunger piston assembly, 2-standing valve assembly, 3-spring, 4-let out husky lid, 5-tubing nipple, 6-oil pipe, 7-groove, 8-space, 9-through hole, 10-and let out husky hole, 11-one-way valve, 12-pump barrel, 13-valve bonnet, 14-standing valve, 15-valve seat, 16-traveling valve, 17-plunger, 18-rubber washer.
Embodiment
Below in conjunction with accompanying drawing to the utility model with being described in further detail, but not as to any restriction of the present utility model.
Embodiment of the present utility model: the sand control lost circulation prevention mining tubing pump that a kind of coal bed gas well mining is special, as shown in drawings: comprise oil pipe 6, be provided with in oil pipe 6 bottoms and let out husky lid 4, standing valve assembly 2 penetrates in oil pipe 6 and is placed on the groove 7 of letting out husky lid 4, this lets out husky lid 4 cross sections is spill, be provided with through hole 9 letting out husky lid 4 middle parts, on the convex surface of letting out husky lid 4, be provided with ring-type and let out husky hole 10, in letting out husky hole 10, ring-type is provided with one-way valve 11, and the top that this ring-type is let out husky hole 10 is hemisphere, at standing valve assembly 2 and let out between husky lid 4 and be provided with spring 3, standing valve assembly 2 forms space 8 with oil pipe 6, this standing valve assembly 2 adopts oil gas tubular type pump structure, be followed successively by from top to bottom pump barrel 12, valve bonnet 13, standing valve 14 and valve seat 15, this valve seat is convex structure, plunger piston assembly 1 part penetrates in standing valve assembly 2, this plunger piston assembly 1 adopts two traveling valve structures, plunger piston assembly 1 top and bottom are traveling valve 16, wherein the traveling valve of lower end is provided with a plunger 17, plunger 17 is below with rubber washer 18, tubing nipple 5 entangles to be let out husky lid 4 and is fixed on oil pipe 6 bottoms, and let out husky lid 4 and oil pipe 6 and tubing nipple 5 by screwed connection.
Know-why of the present utility model is: sand control lost circulation prevention mining tubing pump special this coal bed gas well mining is put into well fixing, then by liftout plunger assembly, (this principle and injector principle are similar, now in standing valve assembly, pressure diminishes, water containing coal sand flows in standing valve assembly cavity by tubing nipple, and then depression of plunger assembly, standing valve in standing valve assembly is shut standing valve assembly inflow entrance, water containing coal sand flow in oil pipe by plunger piston assembly, by repeating drive plunger assembly, can in oil pipe, deposit more and more until flow out outside well by oil pipe containing the water of coal sand.
Lost circulation prevention principle is: use after a period of time at this mining tubing pump, the coal grain returning out in coal seam and the grains of sand often can be deposited on the valve seat of standing valve, make valve seat leakage, cause pump efficiency to reduce, now face beam hanger for pumping machine releasably, control plunger and squeeze into standing valve assembly downwards, under the extruding of plunger, standing valve assembly moves downward after certain distance (at standing valve assembly and let out between husky lid and be provided with spring, this standing valve assembly can be issued to and let out husky lid contact position, manipulate on plunger and carry again, under the effect of spring, standing valve assembly is upspring, float with coal grain and sand grains above valve seat, while finally utilizing plunger pump up water, extract out together with water in cutter oil pipe, if coal sand is more on valve seat, can repeat aforesaid operations, until valve seat is completely unimpeded.
Sand prevention card principle is: in the mining tubing pump of original technology, standing valve assembly and oil pipe are Spielpassung, after within handle contains the water suction oil pipe of coal sand, owing to containing a large amount of coal sand, this coal sand is deposited on because gravity returns between oil pipe and standing valve assembly and plunger piston assembly, can not be along with water flows into outside well, in repetition extraction process, a large amount of coal sand can be deposited between oil pipe and standing valve assembly and plunger piston assembly, cause the holddown pump that even weares and teares, and pass through the utility model, be provided with and let out husky lid in oil pipe bottom, making has a gap between oil pipe and standing valve assembly and plunger piston assembly, coal sand can be deposited on and unload sand and cover, in the time that the deadweight of coal sand and the pressure of water are enough large, can impel the one-way valve of letting out in husky lid to open, coal sand flows in tubing nipple until shaft bottom again by one-way valve, thereby realize sand prevention card problem.
Claims (7)
1. the sand control lost circulation prevention mining tubing pump that coal bed gas well mining is special, comprise oil pipe (6), it is characterized in that: be provided with and let out husky lid (4) in oil pipe (6) bottom, standing valve assembly (2) penetrates in oil pipe (6) and is placed on the groove (7) of letting out husky lid (4), standing valve assembly (2) forms space (8) with oil pipe (6), plunger piston assembly (1) part penetrates in standing valve assembly (2), and tubing nipple (5) entangles to be let out husky lid (4) and be fixed on oil pipe (6) bottom.
2. the special sand control lost circulation prevention mining tubing pump of coal bed gas well mining according to claim 1, is characterized in that: at standing valve assembly (2) and let out between husky lid (4) and be provided with spring (3).
3. the special sand control lost circulation prevention mining tubing pump of coal bed gas well mining according to claim 1, it is characterized in that: under to let out husky lid (4) cross section be spill, in the middle part of letting out husky lid (4), be provided with through hole (9), on the convex surface of letting out husky lid (4), be provided with ring-type and let out husky hole (10), in ring-type is let out husky hole (10), be provided with one-way valve (11).
4. the special sand control lost circulation prevention mining tubing pump of coal bed gas well mining according to claim 3, is characterized in that: the top that ring-type is let out husky hole (10) is hemisphere.
5. the special sand control lost circulation prevention mining tubing pump of coal bed gas well mining according to claim 1, it is characterized in that: described standing valve assembly (2) adopts oil gas tubular type pump structure, be followed successively by from top to bottom pump barrel (12), valve bonnet (13), standing valve (14) and valve seat (15), this valve seat (15) is convex structure.
6. the special sand control lost circulation prevention mining tubing pump of coal bed gas well mining according to claim 1, it is characterized in that: plunger piston assembly (1) adopts two traveling valve structures, plunger piston assembly (1) top and bottom are traveling valve (16), wherein the traveling valve of lower end is provided with a plunger (17), and plunger (17) is below with rubber washer (18).
7. the special sand control lost circulation prevention mining tubing pump of coal bed gas well mining according to claim 1, is characterized in that: let out husky lid (4) and oil pipe (6) and tubing nipple (5) by screwed connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420174679.1U CN203770102U (en) | 2014-04-11 | 2014-04-11 | Special sand-prevention and leak-proof drainage extraction tubing pump for coal-bed gas well drainage extraction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420174679.1U CN203770102U (en) | 2014-04-11 | 2014-04-11 | Special sand-prevention and leak-proof drainage extraction tubing pump for coal-bed gas well drainage extraction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203770102U true CN203770102U (en) | 2014-08-13 |
Family
ID=51287299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420174679.1U Expired - Fee Related CN203770102U (en) | 2014-04-11 | 2014-04-11 | Special sand-prevention and leak-proof drainage extraction tubing pump for coal-bed gas well drainage extraction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203770102U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840483A (en) * | 2015-02-02 | 2016-08-10 | 中国石油大学(北京) | Sticking and leakage preventing pump used for discharge and mining of coal-bed gas well |
| CN106703771A (en) * | 2017-01-16 | 2017-05-24 | 丹东纳泰石油机械有限公司 | Lifting device for petroleum production vane pump of petroleum well |
-
2014
- 2014-04-11 CN CN201420174679.1U patent/CN203770102U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840483A (en) * | 2015-02-02 | 2016-08-10 | 中国石油大学(北京) | Sticking and leakage preventing pump used for discharge and mining of coal-bed gas well |
| CN106703771A (en) * | 2017-01-16 | 2017-05-24 | 丹东纳泰石油机械有限公司 | Lifting device for petroleum production vane pump of petroleum well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20160411 |