CN104074494A - Combined-type oil well casing gas recovery device - Google Patents
Combined-type oil well casing gas recovery device Download PDFInfo
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- CN104074494A CN104074494A CN201410337437.4A CN201410337437A CN104074494A CN 104074494 A CN104074494 A CN 104074494A CN 201410337437 A CN201410337437 A CN 201410337437A CN 104074494 A CN104074494 A CN 104074494A
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- seating nipple
- oil well
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Abstract
The invention discloses a combined-type oil well casing gas recovery device. The ground part is a combined-type tee assembly, one end of a tee is connected with an oil pipe gate at the front end of a small cross, another end of the tee is connected with a casing gate at the front end of a large cross, and the third end of the tee is provided with a liquid discharge check valve and a stop valve. The underground part comprises an oil-gas mixing pump assembly, the upper end of an outer working barrel is connected with an oil pipe hanger in the large cross of a wellhead, the lower end of the outer working barrel is connected with an oil well production tubular column, and a piston with the upper end being connected with a polish rod and the lower end being connected with a sucker rod is arranged in an inner working barrel. An oil storage chamber is arranged between the outer working barrel of a mixing pump and the inner working barrel of the mixing pump. A strip-shaped liquid inlet is formed in the lateral wall of the inner working barrel. The liquid discharge check valve is opened during upstroke to discharge liquid and closed automatically during down-stroke. A gas exhaust check valve is opened to exhaust gas during down-stroke and closed automatically during upstroke. The combined-type oil well casing gas recovery device can solve the phenomena of descending of the working fluid level of an oil well, productivity reduction and gas locking caused due to the fact that oil well casing gas builds the pressure for a long time.
Description
Technical field
The present invention relates to oil extraction in oil field technical field, particularly relate to casing gas recovering device.
Background technology
There is the geology block of a certain amount of hyposmosis oil-bearing structure at field produces exploitation a lot of oil recovery blocks of middle and later periods.The geology block main feature of hyposmosis oil-bearing structure be yield poorly, oil well casing atmospheric pressure is low, sleeve pipe combustion gas is difficult to be utilized and reclaim in process of production.Part natural gas accumulates in oil sets annular space, has caused oil well suppressing production capacity to decline, and when serious, can cause " gas lock " phenomenon, and outer row can cause again the pollution to atmosphere, has also wasted valuable simultaneously and non-renewable clean resource has formed vicious circle.The product of ripe application mostly is valve discharging gas under certain pressure at present, its cost is low, simple in structure, prerequisite is just can enter in production of hydrocarbons main line at the casing gas pressure that reaches certain that builds the pressure for a long time, reaches moment discharge, and casing gas is built the pressure for a long time directly affects oil well productivity.
Summary of the invention
The object of the invention is provides a kind of combined type well casing gas recovery device for present situation on product and the technological deficiency of current the art, builds the pressure for a long time to solve well casing gas, causes the phenomenon of the reduction of well fluid level decline production capacity and gas lock.
In order to realize foregoing invention object, the technical solution adopted in the present invention is as follows:
Combined type well casing gas recovery device, comprises above ground portion and under ground portion; Above ground portion is a Combined type tee joint assembly, one end of threeway is A oil joint in the ninth of the ten Heavenly Stems, be connected with little four-way by oil pipe gate, the threeway other end is B oil joint in the ninth of the ten Heavenly Stems, the vertical component upper end of the interface of B oil joint in the ninth of the ten Heavenly Stems is provided with antifreezing type exhaust ball-and-seat, be connected with big four by sleeve valve, threeway the 3rd end is provided with discharge opeing ball-and-seat and stop valve; Described little four-way upper end is connected with blowout prevention box, and lower end is connected with big four by boll-weevil hanger; Described under ground portion is an air-fuel mixture pump assembly, air-fuel mixture pump assembly comprises seating nipple, mixing pump outer working tube in mixing pump, mixing pump outer working tube upper end is connected with the boll-weevil hanger in well head big four, lower end is connected with oil well production string, is provided with upper end and is connected the piston that lower end is connected with sucker rod with polished rod in mixing pump outer working tube in the interior seating nipple being nested with; Between mixing pump outer working tube and interior seating nipple, it is accumulator, described piston does upper and lower stroke movement with polished rod and sucker rod in interior seating nipple, upstroke piston with polished rod in interior seating nipple promotion to boll-weevil hanger place, in the bottom of accumulator, on seating nipple sidewall, have bar shaped inlet opening, the length of this bar shaped inlet opening is greater than the length of down stroke piston, and down stroke piston is the minimum bar shaped inlet opening middle part of being down in interior seating nipple with polished rod and sucker rod; Described discharge opeing ball-and-seat is that upstroke is opened discharge opeing, and down stroke is closed automatically; Exhaust ball-and-seat is contrary with discharge opeing ball-and-seat job order, and down stroke is opened exhaust, and upstroke is closed automatically.
The B oil tip side in the ninth of the ten Heavenly Stems of described Combined type tee joint assembly is provided with casing pressure table; A oil tip side in the ninth of the ten Heavenly Stems is provided with oil pressure pressure meter; The 3rd end is provided with antifreezing sampling valve, is provided with oil-gas mixer and produces main line back pressure table between discharge opeing ball-and-seat and stop valve.
Described mixing pump outer working tube upper end is connected with the boll-weevil hanger in well head big four by short joint; Mixing pump outer working tube lower end is connected with oil well production string by outer pin thread.
In the piston of interior seating nipple, be provided with travelling valve, travelling valve is contrary with the operating principle of oil well pump, and this piston travelling valve upstroke is opened, and down stroke is closed.
The present invention has following positive effect: it utilizes the descending gravity of well rod without the new power drive energy, reach with the same tubing string oil gas of oil well with adopting, can make 90% low pressure oil well casing gas be recycled utilization, pollution that the outer row of well casing gas brings to atmosphere and the injury to the mankind are stopped, accomplish oil well casing gas zero, overall economic efficiency, social benefit, the environmental benefit of the industrial production exploitation of energy-conservation, consumption reduction, reduction of discharging, synergy are realized, reach the production management target of HSE, low-carbon (LC), green, safety and environmental protection.This device can Reusability, and long-term maintenance-free can be accomplished unitized, standardization, the normalization of well mouth of oil well, makes the upgrading of oil well management entirety.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of Combined type tee joint assembly of the present invention.
Fig. 3 is the structural representation of air-fuel mixture pump assembly of the present invention (piston is positioned at down stroke).
Fig. 4 is the internal construction schematic diagram of piston in air-fuel mixture pump assembly of the present invention.
Fig. 5 is the sectional drawing along A-A direction of Fig. 4.
In figure, number: the 1st, blowout prevention box, the 2nd, polished rod, the 3rd, little four-way, the 4th, oil pipe gate, the 5th, A oil interface in the ninth of the ten Heavenly Stems, the 6th, oil pressure pressure meter, the 7th, threeway plug, the 8th, antifreezing sampling valve, the 9th, antifreezing type exhaust ball-and-seat, the 10th, discharge opeing ball-and-seat, the 11st, produce main line back pressure table, the 12nd, oil-gas mixer, the 13rd, stop valve, the 14th, casing pressure pressure meter, the 15th, B oil interface in the ninth of the ten Heavenly Stems, the 16th, sleeve gate, the 17th, inlet opening, the 18th, sleeve pipe, the 19th, oil pick-up tube, the 20th, big four, the 21st, boll-weevil hanger, the 22nd, piston, the 23rd, tubing coupling, the 24th, short joint, the 25th, mixing pump outer working tube, the 26th, sucker rod, the 27th, seating nipple in mixing pump, the 28th, accumulator, the 29th, bar shaped inlet opening, the 30th, outer pin thread, the 31st, valve supporting positive cover, the 32nd, piston enters hole at night.
Detailed description of the invention
Structure of the present invention is referring to Fig. 1, and combined type well casing gas recovery device comprises above ground portion and under ground portion.Above ground portion is a Combined type tee joint assembly, referring to Fig. 2.Described under ground portion is an air-fuel mixture pump assembly, referring to Fig. 3.
Above ground portion is a Combined type tee joint assembly, one end of threeway is A oil joint in the ninth of the ten Heavenly Stems 5, is connected with little four-way 3 by oil pipe gate 4, and the threeway other end is B oil joint in the ninth of the ten Heavenly Stems 15, be connected with big four 20 by sleeve valve 16, threeway the 3rd end is provided with discharge opeing ball-and-seat 10 and stop valve 13; Described little four-way 3 upper ends are connected with blowout prevention box 1, and lower end is connected with big four 20 by boll-weevil hanger 21.
Described under ground portion is an air-fuel mixture pump assembly, air-fuel mixture pump assembly comprises seating nipple 27, mixing pump outer working tube 25 in mixing pump, mixing pump outer working tube 25 upper ends are connected with the boll-weevil hanger 21 in well head big four 20, lower end is connected with oil well production string, and 27 li of the interior seating nipples that are nested with in mixing pump outer working tube 25 are provided with upper end and are connected the piston 22 that lower end is connected with sucker rod 26 with polished rod 2; Between mixing pump outer working tube 25 and interior seating nipple 27, it is accumulator 28, described piston 22 does upper and lower stroke movement with polished rod and sucker rod 26 in interior seating nipple 27, upstroke piston 22 with polished rod 26 in interior seating nipple 27 promotion to boll-weevil hanger 21 places, in the bottom of accumulator 28, on seating nipple 27 sidewalls, have bar shaped inlet opening 29, the length of this bar shaped inlet opening 29 is greater than the length of piston 22, and down stroke piston 22 is minimum bar shaped inlet opening 29 middle parts of being down in interior seating nipple 27 with polished rod and sucker rod 26.
The B oil tip side in the ninth of the ten Heavenly Stems of described Combined type tee joint assembly is provided with antifreezing type exhaust ball-and-seat 9 and casing pressure table 14; A oil tip side in the ninth of the ten Heavenly Stems 5 is provided with oil pressure pressure meter 6; The 3rd end is provided with antifreezing sampling valve 8, is provided with oil-gas mixer 12 and produces main line back pressure table 11 between discharge opeing ball-and-seat 10 and stop valve 13.
Described mixing pump outer working tube 24 upper ends are connected with the boll-weevil hanger 21 in well head big four by short joint 24, and in mixing pump, seating nipple 27 is connected with tubing string by tubing coupling 23; Mixing pump outer working tube 24 lower ends are connected with oil well production string by outer pin thread 30.
The operating principle of the discharge opeing ball-and-seat 10 of threeway manifold of the present invention is that upstroke is opened discharge opeing, and down stroke is closed automatically, and the exhaust ball-and-seat 9 of threeway manifold is contrary with discharge opeing ball-and-seat 10 job orders, and down stroke is opened exhaust, and upstroke is closed automatically.
Referring to Fig. 4,5, in the piston 22 of interior seating nipple, be provided with travelling valve, travelling valve is contrary with the operating principle of oil well pump, and this piston travelling valve upstroke is opened, and down stroke is closed.The valve supporting positive cover 31 of this travelling valve is positioned at piston, is provided with piston inlet opening 32 in piston 22 lower surfaces.
Operating principle of the present invention is that while utilizing oil pumper down stroke, the sucker rod 26 in oil well drives the descending casing gas of realizing of piston 22 of seating nipple 27 in this device to bleed.Discharge opeing ball-and-seat when the piston 22 of interior seating nipple is descending in threeway manifold is closed, and antifreezing type exhaust ball-and-seat is opened, and the combustion gas in sleeve pipe is drawn in the pump barrel of air-fuel mixture pump.The inlet opening that continues to come downwards to interior seating nipple 27 when the piston 22 of interior seating nipple is below 29, fluid in outer working tube 25 in air-fuel mixture pump enters interior seating nipple 27 to be mixed with gas, form the normality fluid column of flow string UNICOM, in in the time that oil pumper goes to upstroke from down stroke, the piston 22 of seating nipple rises, oil-gas mixture together suction tee piece Correspondent is crossed in the defeated main line of collection that tapping valve is discharged into oil well together, realized the object of oil well liquid and casing gas synchronous lifting by air-fuel mixture pump and combination threeway manifold.
Claims (4)
1. a combined type well casing gas recovery device, is characterized in that, comprises above ground portion and under ground portion; Above ground portion is a Combined type tee joint assembly, one end of threeway is A oil joint in the ninth of the ten Heavenly Stems, be connected with little four-way by oil pipe gate, the threeway other end is B oil joint in the ninth of the ten Heavenly Stems, the vertical component upper end of the interface of B oil joint in the ninth of the ten Heavenly Stems is provided with antifreezing type exhaust ball-and-seat, be connected with big four by sleeve valve, threeway the 3rd end is provided with discharge opeing ball-and-seat and stop valve; Described little four-way upper end is connected with blowout prevention box, and lower end is connected with big four by boll-weevil hanger; Described under ground portion is an air-fuel mixture pump assembly, air-fuel mixture pump assembly comprises seating nipple, mixing pump outer working tube in mixing pump, mixing pump outer working tube upper end is connected with the boll-weevil hanger in well head big four, lower end is connected with oil well production string, is provided with upper end and is connected the piston that lower end is connected with sucker rod with polished rod in mixing pump outer working tube in the interior seating nipple being nested with; Between mixing pump outer working tube and interior seating nipple, it is accumulator, described piston does upper and lower stroke movement with polished rod and sucker rod in interior seating nipple, upstroke piston with polished rod in interior seating nipple promotion to boll-weevil hanger place, in the bottom of accumulator, on seating nipple sidewall, have bar shaped inlet opening, the length of this bar shaped inlet opening is greater than the length of down stroke piston, and down stroke piston is the minimum bar shaped inlet opening middle part of being down in interior seating nipple with polished rod and sucker rod; Described discharge opeing ball-and-seat is that upstroke is opened discharge opeing, and down stroke is closed automatically; Exhaust ball-and-seat is contrary with discharge opeing ball-and-seat job order, and down stroke is opened exhaust, and upstroke is closed automatically.
2. a kind of combined type well casing gas recovery device according to claim 1, is characterized in that, the B oil tip side in the ninth of the ten Heavenly Stems of described Combined type tee joint assembly is provided with casing pressure table; A oil tip side in the ninth of the ten Heavenly Stems is provided with oil pressure pressure meter; The 3rd end is provided with antifreezing sampling valve, is provided with oil-gas mixer and produces main line back pressure table between discharge opeing ball-and-seat and stop valve.
3. a kind of combined type well casing gas recovery device according to claim 1, is characterized in that, described mixing pump outer working tube upper end is connected with the boll-weevil hanger in well head big four by short joint; Mixing pump outer working tube lower end is connected with oil well production string by outer pin thread.
4. a kind of combined type well casing gas recovery device according to claim 1, it is characterized in that, in the piston of interior seating nipple, be provided with travelling valve, travelling valve is contrary with the operating principle of oil well pump, this piston travelling valve upstroke is opened, and down stroke is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410337437.4A CN104074494B (en) | 2014-07-16 | 2014-07-16 | Combination type well casing gas recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410337437.4A CN104074494B (en) | 2014-07-16 | 2014-07-16 | Combination type well casing gas recovery device |
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| Publication Number | Publication Date |
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| CN104074494A true CN104074494A (en) | 2014-10-01 |
| CN104074494B CN104074494B (en) | 2016-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410337437.4A Expired - Fee Related CN104074494B (en) | 2014-07-16 | 2014-07-16 | Combination type well casing gas recovery device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929586A (en) * | 2015-06-19 | 2015-09-23 | 檀长江 | Autocontrol type oil well casing pipe gas recycling device |
| CN104963634A (en) * | 2015-07-02 | 2015-10-07 | 中国石油天然气股份有限公司 | Method for tripping sucker rod |
| CN105464625A (en) * | 2014-09-10 | 2016-04-06 | 中国石油天然气股份有限公司 | Treatment method of gas lock of compact oil and gas well |
| CN108533480A (en) * | 2018-02-05 | 2018-09-14 | 东北石油大学 | Casing gas auxiliary lifting off-load pumps |
| CN110295870A (en) * | 2019-05-29 | 2019-10-01 | 中石化石油机械股份有限公司研究院 | Conducive to stripper well recyclable device |
| CN110778289A (en) * | 2019-11-06 | 2020-02-11 | 中国石油天然气股份有限公司 | Oil production wellhead device and method capable of recycling casing gas |
| CN111021995A (en) * | 2019-12-18 | 2020-04-17 | 中国石油天然气股份有限公司 | Mechanical pumping drainage gas production wellhead pressurization process pipe column |
| CN111042771A (en) * | 2019-11-21 | 2020-04-21 | 中国石油天然气股份有限公司 | Wellhead casing gas pressurization recovery device, system, method and application |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105464625A (en) * | 2014-09-10 | 2016-04-06 | 中国石油天然气股份有限公司 | Treatment method of gas lock of compact oil and gas well |
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| CN104963634A (en) * | 2015-07-02 | 2015-10-07 | 中国石油天然气股份有限公司 | Method for tripping sucker rod |
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| CN108533480A (en) * | 2018-02-05 | 2018-09-14 | 东北石油大学 | Casing gas auxiliary lifting off-load pumps |
| CN110295870A (en) * | 2019-05-29 | 2019-10-01 | 中石化石油机械股份有限公司研究院 | Conducive to stripper well recyclable device |
| CN110295870B (en) * | 2019-05-29 | 2021-04-30 | 中石化石油机械股份有限公司研究院 | Recovery device beneficial to low-yield well |
| CN110778289A (en) * | 2019-11-06 | 2020-02-11 | 中国石油天然气股份有限公司 | Oil production wellhead device and method capable of recycling casing gas |
| CN111042771A (en) * | 2019-11-21 | 2020-04-21 | 中国石油天然气股份有限公司 | Wellhead casing gas pressurization recovery device, system, method and application |
| CN111042771B (en) * | 2019-11-21 | 2022-03-29 | 中国石油天然气股份有限公司 | Wellhead casing gas pressurization recovery device, system, method and application |
| CN111021995A (en) * | 2019-12-18 | 2020-04-17 | 中国石油天然气股份有限公司 | Mechanical pumping drainage gas production wellhead pressurization process pipe column |
| CN111021995B (en) * | 2019-12-18 | 2024-05-28 | 中国石油天然气股份有限公司 | Mechanical pumping drainage gas production wellhead supercharging process tubular column |
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