CN104074494B - Combination type well casing gas recovery device - Google Patents

Combination type well casing gas recovery device Download PDF

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Publication number
CN104074494B
CN104074494B CN201410337437.4A CN201410337437A CN104074494B CN 104074494 B CN104074494 B CN 104074494B CN 201410337437 A CN201410337437 A CN 201410337437A CN 104074494 B CN104074494 B CN 104074494B
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CN
China
Prior art keywords
oil
seating nipple
seat
piston
stroke
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CN201410337437.4A
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Chinese (zh)
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CN104074494A (en
Inventor
檀长江
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檀长江
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Priority to CN201410337437.4A priority Critical patent/CN104074494B/en
Publication of CN104074494A publication Critical patent/CN104074494A/en
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Publication of CN104074494B publication Critical patent/CN104074494B/en

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Abstract

The invention discloses a kind of combination type well casing gas recovery device, above ground portion is a Combined type tee joint assembly, one end of threeway is connected with the oil pipe gate of little four-way front end, and the threeway other end is connected with the sleeve gate of big four front end, and threeway the 3rd end is provided with discharge opeing ball-and-seat and stop valve;Described under ground portion is an air-fuel mixture pump assembly, and outer working tube upper end therein is connected with the boll-weevil hanger in well head big four, and 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 interior seating nipple;It it is accumulator between mixing pump outer working tube and interior seating nipple。Interior seating nipple sidewall has bar shaped inlet opening。Described discharge opeing ball-and-seat is that upstroke opens discharge opeing, and down stroke is automatically switched off;Aerofluxus ball-and-seat is that down stroke opens aerofluxus, and upstroke is automatically switched off。The present invention can solve well casing gas and build the pressure for a long time, causes that well fluid level decline production capacity reduces the phenomenon with gas lock。

Description

Combination type well casing gas recovery device
Technical field
The present invention relates to oil extraction in oil field technical field, particularly relate to casing gas recovering device。
Background technology
The geology block of a certain amount of hyposmosis oil-bearing structure is had at oil field production development middle and late stage much oil recovery blocks。The geology block of hyposmosis oil-bearing structure is mainly characterized by yielding poorly, oil well casing atmospheric pressure is low, and sleeve pipe combustion gas hardly results in utilization and reclaims in process of production。Portion of natural gas accumulates in oil sets annular space, causes oil well suppressing production capacity and declines, can cause " gas lock " phenomenon time serious, and outer row can cause again the pollution to air, wastes valuable and non-renewable cleaning resource defines vicious cycle simultaneously。The product of ripe application mostly is valve discharging gas under certain pressure at present, its cost is low, simple in construction, premise is must to build the pressure for a long time at casing gas to reach certain pressure and could enter in production of hydrocarbons main line, reaches moment discharge, makes casing gas build the pressure for a long time and directly affect oil well productivity。
Summary of the invention
It is an object of the invention to the present situation on product for current the art and technological deficiency and a kind of combination type well casing gas recovery device is provided, build the pressure for a long time solving well casing gas, cause well fluid level decline production capacity to reduce and the phenomenon of gas lock。
In order to realize foregoing invention purpose, the technical solution adopted in the present invention is as follows:
Combination type well casing gas recovery device, including 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, it is 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 aerofluxus ball-and-seat, being 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 to blowout prevention box, and lower end is connected to big four by boll-weevil hanger;Described under ground portion is an air-fuel mixture pump assembly, air-fuel mixture pump assembly includes seating nipple in mixing pump, mixing pump outer working tube, 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;It it is accumulator between mixing pump outer working tube and interior seating nipple, 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 most promotion to boll-weevil hanger place, seating nipple sidewall has bar shaped inlet opening in the bottom of accumulator, the length of this bar shaped inlet opening is more than the length of down stroke piston, and down stroke piston is down in the middle part of bar shaped inlet opening with polished rod and sucker rod are minimum in interior seating nipple;Described discharge opeing ball-and-seat is that upstroke opens discharge opeing, and down stroke is automatically switched off;Aerofluxus ball-and-seat is contrary with discharge opeing ball-and-seat job order, and down stroke opens aerofluxus, and upstroke is automatically switched off。
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 gauge;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。
Being provided with travelling valve in the piston of interior seating nipple, travelling valve is contrary with the operation 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: the gravity that it utilizes well rod descending is without the new power drive energy, reach with the same tubing string oil gas of oil well with adopting, the low pressure oil well casing gas that can make 90% is recycled utilization, pollution that the outer row of well casing gas brings to air and the injury to the mankind are stopped, accomplish oil well casing gas zero, achieve energy-conservation, consumption reduction, reduce discharging, the overall economic efficiency of the commercial production of potentiation exploitation, social benefit, environmental benefit, production management's target of HSE, low-carbon (LC), green, safety and environmental protection are reached。This device can Reusability, long-term freedom from repairs, unitized, the standardization of well mouth of oil well, normalization can be accomplished, make oil well management entirety upgrade。
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention。
Fig. 2 is the structural representation of the Combined type tee joint assembly of the present invention。
Fig. 3 is the structural representation of the air-fuel mixture pump assembly (piston is positioned at down stroke) of the present invention。
Fig. 4 be the present invention air-fuel mixture pump assembly in the internal structure schematic diagram of piston。
Fig. 5 is the profile along A-A direction of Fig. 4。
Figure numbers: 1 is blowout prevention box, 2 is polished rod, 3 is little four-way, 4 is oil pipe gate, 5 is A oil interface in the ninth of the ten Heavenly Stems, 6 is oil pressure Pressure gauge, 7 is threeway plug, 8 is antifreezing sampling valve, 9 is antifreezing type aerofluxus ball-and-seat, 10 is discharge opeing ball-and-seat, 11 is produce main line back pressure table, 12 is oil-gas mixer, 13 are off valve, 14 is casing pressure Pressure gauge, 15 is B oil interface in the ninth of the ten Heavenly Stems, 16 is sleeve gate, 17 is inlet opening, 18 is sleeve pipe, 19 is oil pick-up tube, 20 is big four, 21 is boll-weevil hanger, 22 is piston, 23 is tubing coupling, 24 is short joint, 25 is mixing pump outer working tube, 26 is sucker rod, 27 is seating nipple in mixing pump, 28 is accumulator, 29 is bar shaped inlet opening, 30 is outer pin thread, 31 is valve supporting positive cover, 32 is that piston enters hole at night。
Detailed description of the invention
The structure of the present invention is referring to Fig. 1, and combination type well casing gas recovery device includes 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, being 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 end is connected to blowout prevention box 1, and lower end is connected to big four 20 by boll-weevil hanger 21。
Described under ground portion is an air-fuel mixture pump assembly, air-fuel mixture pump assembly includes seating nipple 27 in mixing pump, mixing pump outer working tube 25, mixing pump outer working tube 25 upper end is connected with the boll-weevil hanger 21 in well head big four 20, lower end is connected with oil well production string, is provided with upper end and is connected the piston 22 that lower end is connected with sucker rod 26 with polished rod 2 in mixing pump outer working tube 25 in the interior seating nipple 27 being nested with;It it is accumulator 28 between mixing pump outer working tube 25 and interior seating nipple 27, 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 most promotion to boll-weevil hanger 21 place, in the bottom of accumulator 28, seating nipple 27 sidewall has bar shaped inlet opening 29, the length of this bar shaped inlet opening 29 is more than the length of piston 22, and down stroke piston 22 is down in the middle part of bar shaped inlet opening 29 with polished rod and sucker rod 26 are minimum in interior seating nipple 27。
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 aerofluxus 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 gauge 6;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 end is 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 end is connected with oil well production string by outer pin thread 30。
The operation principle of the discharge opeing ball-and-seat 10 of threeway manifold of the present invention is that upstroke opens discharge opeing, and down stroke is automatically switched off, and the aerofluxus ball-and-seat 9 of threeway manifold is contrary with discharge opeing ball-and-seat 10 job order, and down stroke opens aerofluxus, and upstroke is automatically switched off。
Referring to Fig. 4,5, in the piston 22 of interior seating nipple, be provided with travelling valve, travelling valve is contrary with the operation principle of oil well pump, this piston travelling valve upstroke open, down stroke close。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 surface。
When the operation principle of the present invention is to utilize oil pumper down stroke, the sucker rod 26 in oil well drives the descending casing gas that realizes of piston 22 of seating nipple 27 in this device to bleed。While the piston 22 of interior seating nipple is descending, the discharge opeing ball-and-seat in threeway manifold is closed, and antifreezing type aerofluxus ball-and-seat is opened, and the combustion gas in sleeve pipe is drawn in the pump barrel of air-fuel mixture pump。When the piston 22 of interior seating nipple continues to come downwards to the inlet opening less than 29 of interior seating nipple 27, in fluid in outer working tube 25 in air-fuel mixture pump enters, seating nipple 27 mixes with gas, form the normality fluid column of flow string UNICOM, when oil pumper goes to upstroke from down stroke, the piston 22 of interior seating nipple rises, oil-gas mixture together suction tee T Correspondent is crossed tapping valve be discharged into together in the gathering pipeline of oil well, achieved the purpose of oil well liquid and casing gas synchronous lifting by air-fuel mixture pump and combination threeway manifold。

Claims (4)

1. a combination type well casing gas recovery device, it is characterised in that include 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, it is 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 aerofluxus ball-and-seat, being 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 to blowout prevention box, and lower end is connected to big four by boll-weevil hanger;Described under ground portion is an air-fuel mixture pump assembly, air-fuel mixture pump assembly includes seating nipple in mixing pump, mixing pump outer working tube, 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;It it is accumulator between mixing pump outer working tube and interior seating nipple, 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 most promotion to boll-weevil hanger place, seating nipple sidewall has bar shaped inlet opening in the bottom of accumulator, the length of this bar shaped inlet opening is more than the length of down stroke piston, and down stroke piston is down in the middle part of bar shaped inlet opening with polished rod and sucker rod are minimum in interior seating nipple;Described discharge opeing ball-and-seat is that upstroke opens discharge opeing, and down stroke is automatically switched off;Aerofluxus ball-and-seat is contrary with discharge opeing ball-and-seat job order, and down stroke opens aerofluxus, and upstroke is automatically switched off。
2. a kind of combination type well casing gas recovery device according to claim 1, it is characterised 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 gauge;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 combination type well casing gas recovery device according to claim 1, it is characterised 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 combination type well casing gas recovery device according to claim 1, it is characterised in that being provided with travelling valve in the piston of interior seating nipple, travelling valve is contrary with the operation principle of oil well pump, and this piston travelling valve upstroke is opened, and down stroke is closed。
CN201410337437.4A 2014-07-16 2014-07-16 Combination type well casing gas recovery device CN104074494B (en)

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CN104074494B true CN104074494B (en) 2016-06-22

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105464625B (en) * 2014-09-10 2018-02-02 中国石油天然气股份有限公司 A kind of processing method of fine and close Oil/gas Well gas lock
CN104929586B (en) * 2015-06-19 2017-06-23 檀长江 Self-control type oil well casing
CN104963634B (en) * 2015-07-02 2017-06-13 中国石油天然气股份有限公司 A kind of actuating oil-pumping unit method
CN108533480B (en) * 2018-02-05 2019-10-01 东北石油大学 Casing gas auxiliary lifting off-load pump
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

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5132904A (en) * 1990-03-07 1992-07-21 Lamp Lawrence R Remote well head controller with secure communications port
CN201412129Y (en) * 2009-06-02 2010-02-24 中国石油天然气股份有限公司 Pumping and drainage gas production device of gas production well
CN201610747U (en) * 2010-02-09 2010-10-20 孙耀国 Wellhead device for recovering sleeve gas
CN102747987A (en) * 2012-07-04 2012-10-24 刘庆敏 Sleeve gas collection device and method
CN202882857U (en) * 2012-09-29 2013-04-17 檀长江 Self-controlled oil well casing gas recovery device
CN203702098U (en) * 2013-12-27 2014-07-09 檀长江 Self-control type oil well casing gas recovery unit
CN204002717U (en) * 2014-07-16 2014-12-10 张军 Combined type well casing gas recovery device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5132904A (en) * 1990-03-07 1992-07-21 Lamp Lawrence R Remote well head controller with secure communications port
CN201412129Y (en) * 2009-06-02 2010-02-24 中国石油天然气股份有限公司 Pumping and drainage gas production device of gas production well
CN201610747U (en) * 2010-02-09 2010-10-20 孙耀国 Wellhead device for recovering sleeve gas
CN102747987A (en) * 2012-07-04 2012-10-24 刘庆敏 Sleeve gas collection device and method
CN202882857U (en) * 2012-09-29 2013-04-17 檀长江 Self-controlled oil well casing gas recovery device
CN203702098U (en) * 2013-12-27 2014-07-09 檀长江 Self-control type oil well casing gas recovery unit
CN204002717U (en) * 2014-07-16 2014-12-10 张军 Combined type well casing gas recovery device

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