CN104213897A - High-efficiency underground gas-liquid separator - Google Patents

High-efficiency underground gas-liquid separator Download PDF

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Publication number
CN104213897A
CN104213897A CN201310222734.XA CN201310222734A CN104213897A CN 104213897 A CN104213897 A CN 104213897A CN 201310222734 A CN201310222734 A CN 201310222734A CN 104213897 A CN104213897 A CN 104213897A
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CN
China
Prior art keywords
gas
liquid
coil
ball seat
turbulication
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201310222734.XA
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Chinese (zh)
Inventor
孙德启
石凤琴
陆利新
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI EXTRONG OILFIELD TECHNOLOGY Co Ltd
Original Assignee
SHANGHAI EXTRONG OILFIELD TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHANGHAI EXTRONG OILFIELD TECHNOLOGY Co Ltd filed Critical SHANGHAI EXTRONG OILFIELD TECHNOLOGY Co Ltd
Priority to CN201310222734.XA priority Critical patent/CN104213897A/en
Publication of CN104213897A publication Critical patent/CN104213897A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a high-efficiency underground gas-liquid separator. The upper end of a floating ball seat is connected with the lower end of a gas-liquid distribution head, the inner wall of the lower end of the floating ball seat is connected with a turbulication arm, the outer wall of the lower end of the floating ball seat is connected with a turbulication pipe, and a gas collection chamber is formed in the floating ball seat. An axial liquid through hole is formed in the lower wall of the gas-liquid distribution head, a gas exhaust cavity is further formed in the gas-liquid distribution head, a gas exhaust hole is formed in the lateral end of the gas exhaust cavity, the lower end of the gas exhaust cavity is communicated with the gas collection chamber, and the lower end of the gas collection chamber is communicated with the turbulication arm. Turbulication space is formed between the turbulication arm and the turbulication pipe, a semi-circular boss is arranged on the outer wall of the turbulication pipe, and the tail ends of the two sides of the semi-circular boss are connected with axial protruding strips respectively. A first semi-annulus channel and a second semi-annulus channel are divided between the turbulication pipe and a distribution pipe, a tangential liquid inlet hole is formed in the lateral wall of the turbulication pipe in the first semi-annulus channel, and the lower end of a distribution body separates the second semi-annulus channel from the first semi-annulus channel. By means of the high-efficiency underground gas-liquid separator, pump efficiency can be increased effectively, and gas locking is avoided.

Description

Underground high-efficient gas-liquid separator
Technical field
The present invention relates to a kind of downhole tool be arranged on for separating of associated gas in crude oil under pump for pumping well, specifically a kind of underground high-efficient gas-liquid separator.
Background technology
At the oil well of oilfield exploitation middle and later periods or the low oil well (particularly the oil well of high gas-liquid ratio) of producing fluid level, gas is the principal element affecting pumping efficiency of oil pump.These gases occupy the partial volume of pump chamber, can reduce the degree of filling in pump chamber, cause the valve ball of oil well pump to be opened delayed; " gas lock " phenomenon is even there will be time serious.Also can occur " hydraulic shock " when there is " gas lock " phenomenon, cause the vibration of rod pumping system, accelerate it and damage.These bad results can cause the frequent operation of rod-pumped well, and pump detection period is shortened, and development cost increases.
For will preventing oil well pump gas lock and improving pump efficiency, mode the most frequently used in industry is under pump, install underground gas-liquid separator (crying again " gas anchor ").But the most principle of existing underground gas-liquid separator is single, gas-liquid separation effect is undesirable; Ubiquity structure design defect, easily makes gas-liquid again be mixed into oil well pump after isolation.
Summary of the invention
The present invention adopts the mode of multi-stage separation to solve the undesirable difficult problem of gas-liquid separator separates effect under existing well.
For achieving the above object, the invention provides a kind of underground high-efficient gas-liquid separator, be arranged on oil pipe lower end, mainly comprise gas-liquid shunt head, steel ball, isocon, the ball seat that floats, make coil, make spiral arm, shunting body, connector, feed tube and interior pipe, wherein oil pipe, gas-liquid shunt head, isocon, connector connect successively, also comprise coaxial feed tube and interior pipe that connector lower end connects respectively, the floating ball seat connected successively vertically also having the inside of isocon to be provided with, make coil, shunting body; Wherein the float upper end of ball seat connects the lower end of gas-liquid shunt head, the lower end inner wall of the ball seat that floats connect upper and lower end through make spiral arm, the lower end outer wall of the ball seat that floats connects makes coil, and ball seat inside of floating is provided with collection chamber;
Gas-liquid shunt head lower wall is provided with the axial liquid pass hole of at least two through oil pipes and isocon; Gas-liquid shunt head inside is also provided with independently discharge chamber, and the side of described discharge chamber has the steam vent of through gas-liquid shunt head sidewall, the lower end connected set air chamber of described discharge chamber, and collection chamber lower end is connected and made spiral arm; Described make spiral arm and make form columnar making between coil and revolve space;
The outer wall making coil is provided with the semicircular ring boss extended radially, and the both-side ends of described semicircular ring boss connects an axial raised line respectively; Described semicircular ring boss, two axial raised lines are all close to isocon inwall; And the space of making between coil outer wall and isocon inwall is divided into two the first half annulus access in semi-ring and the second half annulus access with this; The sidewall making coil in the first half annulus access is provided with tangential direction hole;
The first half annular space beneath galleries connect in the endoporus of pipe, top is connected by tangential direction hole and is made making in coil and revolve space; The liquid separating port that the lower end of described coil endoporus is arranged by horn mouth, shunting body radial direction successively connects the lower end of the second half annulus access, and described axial liquid pass hole is connected in the upper end of described the second half annulus access; The lower end of described shunting body is by the second half annulus access and the first half annular space channel partition.
Wherein, the sidewall of described feed tube is provided with inlet opening, and described inlet position all higher than interior pipe bottom.
Wherein, make described on spiral arm sidewall and be drilled with plural radial hole.
Wherein, the upper end of the ball seat that floats also is provided with the circular open of through collection chamber, and steel ball relies on self gravitation to put on described circular open, and circular open diameter is less than steel ball.
Compared to the prior art, technical scheme provided by the invention adopts multi-stage gas-liquid to be separated: mixed liquor carries out multi-stage separation, good separating effect through slippage, sedimentation, centrifugal action, effectively can improve pump efficiency, avoids the generation of " gas lock " phenomenon.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is A-A cross-sectional view in Fig. 1;
Fig. 3 is B-B cross-sectional view in Fig. 1;
Fig. 4 is C-C cross-sectional view in Fig. 1;
Fig. 5 is D-D cross-sectional view in Fig. 1;
Fig. 6 is E-E cross-sectional view in Fig. 1;
Fig. 7 is F-F cross-sectional view in Fig. 1.
In figure: 1 is gas-liquid shunt head, 2 is steel ball, and 3 is holding screw, 4 is seal, and 5 is the ball seat that floats, and 6 is axial raised line, 7 for making coil, and 8 is isocon, and 9 for making spiral arm, 10 is semicircular ring boss, and 11 is tangential direction hole, and 12 is the first half annulus access, 13 is shunting body, and 14 is connector, and 15 is feed tube, 16 is interior pipe, 17 is steam vent, and 18 is discharge chamber, and 19 is axial liquid pass hole, 20 is collection chamber, 21 revolve space for making, and 22 is the second half annulus access, and 23 is horn mouth, 24 is liquid separating port, and 151 is inlet opening.
Detailed description of the invention
In order to make object of the present invention, technical scheme and effect clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described in further detail.See Fig. 1 and Fig. 2, the present invention to be connected on below oil well pump under three to five oil pipe places and to stretch in well.
During work, open oil well pump.Under the swabbing action of oil well pump, shaft bottom gas and liquid mixture enters the annular space between feed tube 15 and interior pipe 16 by the inlet opening 151 on feed tube 15; The aperture of mixed liquor on inlet opening 151 can produce first time gas-liquid separation under " de'collement ".
Mixed liquor after first time is separated is descending along the annular space between feed tube 15 and interior pipe 16, mixed liquor produces second time gas-liquid separation under " settlement action ", the up upper end from feed tube 15 of gas enters oil jacket annular space, and liquid enters the endoporus of interior pipe 16 from bottom.
Mixed liquor after second time is separated is up along the endoporus of interior pipe 16, the first half annulus access 12.The axial raised line 6 that the first half annulus access 12 are connected by isocon (8) inwall, semicircular ring boss 10 and its both sides is formed; Mixed liquor, when running into the axial raised line 6 that semicircular ring boss (10) is connected with its both sides, cannot continue up and enter through tangential direction hole 11 to make coil 7 and make making between spiral arm 9 and revolve annular space 21.
Tangential direction hole 11 is being made along the hole that its diameter direction tangential is offered on coil 7 sidewall, thus mixed liquor enter to make when revolving annular space 21 can along with make coil 7 diameter direction tangential and enter, and then and make coil 7 inwall impact thus produce eddy flow.
Under centrifugal action, the liquid in mixed liquor is thrown to surrounding, and air accumulation in mixed liquor is making the central authorities of endoporus of coil 7, so just produces third time gas-liquid separation.Liquid after separation is descending along horn mouth 23, turns to enter half annulus access 2 22 through liquid separating port 24; Then the axial liquid pass hole 19 that the second half annulus access 22 of passing through on are connected enters the oil pipe on top, finally enters oil well pump.And the gas major part after being separated enters collection chamber 20 through the through centre bore making spiral arm 9, fraction is separately had to revolve the up radial hole by making spiral arm 9 top in space 21 enter collection chamber 20 through making.When accumulated gases is to certain pressure, the steel ball 2 that gas can wash floating ball seat 5 upper end open enters discharge chamber 18, enters oil jacket annular space finally by steam vent 17.
In addition, seal 4 is provided with between the lower end of gas-liquid shunt head 1 and the upper end of floating ball seat 5; Float ball seat 5 lower end outer wall and make between coil 7 upper end and be provided with second group of seal 4.
Being connected in addition between all parts adopts outside screw thread and holding screw 3 also can be adopted to connect.
In addition, the ball seat 5 that floats can carry out upper and lower floating in gas-liquid shunt head 1 lower end, to compensate processing and alignment error.
The foregoing is only better possible embodiments of the present invention; described embodiment is also not used to limit scope of patent protection of the present invention; therefore the equivalent structure that every utilization manual of the present invention and accompanying drawing content are done changes, and in like manner all should be included within protection scope of the present invention.

Claims (4)

1. a underground high-efficient gas-liquid separator, be arranged on oil pipe lower end, mainly comprise gas-liquid shunt head (1), steel ball (2), isocon (8), the ball seat (5) that floats, make coil (7), make spiral arm (9), shunting body (13), connector (14), feed tube (15) and interior pipe (16), wherein oil pipe, gas-liquid shunt head (1), isocon (8), connector (14) connect successively, it is characterized in that:
Also comprise coaxial feed tube (15) and interior pipe (16) that connector (14) lower end connects respectively, the floating ball seat (5) connected successively vertically also having the inside of isocon (8) to be provided with, make coil (7), shunting body (13);
Wherein the upper end of floating ball seat (5) connects the lower end of gas-liquid shunt head (1), float ball seat (5) lower end inner wall connect upper and lower end through make spiral arm (9), the lower end outer wall of floating ball seat (5) connects makes coil (7), and ball seat (5) inside of floating is provided with collection chamber (20);
Gas-liquid shunt head (1) lower wall is provided with the axial liquid pass hole (19) of at least two through oil pipes and isocon (8); Gas-liquid shunt head (1) inside is also provided with independently discharge chamber (18), the side of described discharge chamber (18) has the steam vent (17) of through gas-liquid shunt head (1) sidewall, lower end connected set air chamber (20) of described discharge chamber (18), collection chamber (20) lower end is connected and is made spiral arm (9); Described make spiral arm (9) and make form columnar making between coil (7) and revolve space (21);
The outer wall making coil (7) is provided with the semicircular ring boss (10) extended radially, and the both-side ends of described semicircular ring boss (10) connects an axial raised line (6) respectively; Described semicircular ring boss (10), two axial raised lines (6) are all close to isocon (8) inwall; And the space of making between coil (7) outer wall and isocon (8) inwall is divided into two the first half annulus access (12) in semi-ring and the second half annulus access (22) with this; The sidewall making coil (7) in the first half annulus access (12) is provided with tangential direction hole (11);
The first half annulus access (12) bottoms connect in the endoporus of pipe (16), top is connected by tangential direction hole (11) and is made making in coil (7) and revolve space (21); The liquid separating port (24) that the lower end of described coil (7) endoporus is arranged by horn mouth (23), shunting body (13) radial direction successively connects the lower end of the second half annulus access (22), and described axial liquid pass hole (19) is connected in the upper end of described the second half annulus access (22); The second half annulus access (22) and the first half annulus access (12) are separated by the lower end of described shunting body (13).
2. underground high-efficient gas-liquid separator as claimed in claim 1, it is characterized in that: the sidewall of described feed tube (15) is provided with inlet opening (151), described inlet (15) position all higher than interior pipe (16) bottom.
3. underground high-efficient gas-liquid separator as claimed in claim 1, is characterized in that: described in make on spiral arm (9) sidewall and be drilled with plural radial hole.
4. underground high-efficient gas-liquid separator as claimed in claim 1, it is characterized in that: the upper end of the ball seat (5) that floats also is provided with the circular open of through collection chamber (20), steel ball (2) relies on self gravitation to put on described circular open, and circular open diameter is less than steel ball (2).
CN201310222734.XA 2013-06-05 2013-06-05 High-efficiency underground gas-liquid separator Pending CN104213897A (en)

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Publications (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108533243A (en) * 2018-03-16 2018-09-14 中国科学院力学研究所 A kind of underground gas-liquid separator
CN113863899A (en) * 2021-09-30 2021-12-31 新疆赢华石油技术服务有限公司 Gas-proof sand-proof pumping aid for oil well

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4676308A (en) * 1985-11-22 1987-06-30 Chevron Research Company Down-hole gas anchor device
US20050081718A1 (en) * 2003-10-17 2005-04-21 Carruth Don V. Downhole gas/liquid separator and method
CN201502369U (en) * 2009-09-28 2010-06-09 濮阳市中发石油机械有限公司 Spiral-flow-type underground gas-liquid separator
CN201546691U (en) * 2009-09-28 2010-08-11 濮阳市中发石油机械有限公司 Multistage separation gas anchor
CN202659222U (en) * 2012-05-30 2013-01-09 李桂芳 Twice-separation gas anchor
CN202707028U (en) * 2012-05-15 2013-01-30 西安鼎和新型能源有限公司 Multistage separation gas anchor
CN202707027U (en) * 2012-05-15 2013-01-30 陕西鼎和源瑞环境工程有限公司 Centrifugal-type gas anchor
CN202926307U (en) * 2012-12-02 2013-05-08 中国石油化工股份有限公司 Well washing protective gas anchor
CN203296763U (en) * 2013-06-05 2013-11-20 上海优强石油科技有限公司 Downhole efficient gas-liquid separator

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4676308A (en) * 1985-11-22 1987-06-30 Chevron Research Company Down-hole gas anchor device
US20050081718A1 (en) * 2003-10-17 2005-04-21 Carruth Don V. Downhole gas/liquid separator and method
CN201502369U (en) * 2009-09-28 2010-06-09 濮阳市中发石油机械有限公司 Spiral-flow-type underground gas-liquid separator
CN201546691U (en) * 2009-09-28 2010-08-11 濮阳市中发石油机械有限公司 Multistage separation gas anchor
CN202707028U (en) * 2012-05-15 2013-01-30 西安鼎和新型能源有限公司 Multistage separation gas anchor
CN202707027U (en) * 2012-05-15 2013-01-30 陕西鼎和源瑞环境工程有限公司 Centrifugal-type gas anchor
CN202659222U (en) * 2012-05-30 2013-01-09 李桂芳 Twice-separation gas anchor
CN202926307U (en) * 2012-12-02 2013-05-08 中国石油化工股份有限公司 Well washing protective gas anchor
CN203296763U (en) * 2013-06-05 2013-11-20 上海优强石油科技有限公司 Downhole efficient gas-liquid separator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108533243A (en) * 2018-03-16 2018-09-14 中国科学院力学研究所 A kind of underground gas-liquid separator
CN113863899A (en) * 2021-09-30 2021-12-31 新疆赢华石油技术服务有限公司 Gas-proof sand-proof pumping aid for oil well

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Application publication date: 20141217