CN104806224A - Down-hole eccentric gas separator - Google Patents
Down-hole eccentric gas separator Download PDFInfo
- Publication number
- CN104806224A CN104806224A CN201510118423.8A CN201510118423A CN104806224A CN 104806224 A CN104806224 A CN 104806224A CN 201510118423 A CN201510118423 A CN 201510118423A CN 104806224 A CN104806224 A CN 104806224A
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- CN
- China
- Prior art keywords
- gas
- eccentric
- outer tube
- pipe
- liquid
- 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.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/38—Arrangements for separating materials produced by the well in the well
Abstract
The invention discloses a down-hole eccentric gas separator. The down-hole eccentric gas separator comprises an external pipe, an eccentric connector and a connecting base, wherein the eccentric connector and the connecting base are connected with the upper end and the lower end of the external pipe respectively, one end of an internal pipe is communicated with the eccentric connector, the other end of the internal pipe is communicated with the external pipe, the axis of the internal pipe and the axis of the external pipe are arranged in parallel, an eccentric annular space is formed between the internal pipe and the external pipe, a plurality of gas exhaust holes and a plurality of liquid inlet holes are formed in the two sides of the external pipe respectively, the gas exhaust holes are formed in the wide side of the eccentric annular space, and the liquid inlet holes are formed in the narrow side of the eccentric annular space. The axis of the internal pipe and the axis of the external pipe are not arranged on the same straight line, when a gas and liquid mixture which is processed through secondary separation enters the external pipe through the liquid inlet holes, the gas and liquid mixture will be separated again on the two eccentric flow passes between a sleeve and the external pipe, in other words, simple separation between gas and liquid is repeatedly carried out while the gas and liquid mixture naturally slides down due to its gravity, the content of gas in the liquid which finally enters the internal pipe is further reduced, and the pump efficiency of an oil pump is improved.
Description
Technical field
The present invention relates to a kind of down-hole string, specifically refer to DH eccentric center gas separator.
Background technology
Pumpingh well is when producing, and the fluid entering pit shaft is generally gas, oily two casees or gas, oil, water three-phase mixture.Due to the existence of gas phase, when PIP is less than bubble point pressure, gas exists with the form of minute bubbles, and in pumping process, because the compressibilty of gas is comparatively strong, gas becomes the principal element affecting sucker rod pump pump efficiency.For lowering gas to the impact of oil well pump work, the method usually adopted has two kinds: one to be that the submergence increasing pump improves pump inlet pressure, reduces free gas to the impact of pump work; Two is adopt downhole gas separator, and make before entering pump, to realize gas-liquid separation into pump fluid, the gas of separation place, by oil pipe collar air discharge, reduces into the gas content in pump liquid.
And in prior art, gas-liquid separator under oil well is made up of the outer tube of central tube and peripheral empty set thereof, the bottom of central tube offers lower inlet opening, outer tube and central tube form a chamber, between the top of outer tube and central tube, there is steam vent, the sidewall on the top of outer tube offers inlet opening, in use, first gas mixture in oil well enters into outer tube by the upper inlet opening on outer tube, enter fluid in the mixture in outer tube sink and taken away by oil pump from the lower inlet opening of central tube, gas then enters sleeve pipe by the steam vent of outer tube upper end.Although this structure make use of gas-liquid slippage effect, because gas mixture is separated in outer tube, when air-fuel mixture logistics capacity is constant, be subject to space constraint in outer tube, pressure is comparatively large, and therefore separating effect is poor, separative efficiency is lower.
Summary of the invention
The object of the present invention is to provide DH eccentric center gas separator, facilitate cable reasonable placement when connecting up turning, and then reach the object of protection cable.
Object of the present invention is achieved through the following technical solutions:
DH eccentric center gas separator, the eccentric joint, the Connection Block that comprise outer tube and be connected with the two ends up and down of outer tube respectively, also comprise the interior pipe being arranged on outer tube, one end of described interior pipe is communicated with eccentric joint, the other end of interior pipe is communicated with outer tube, the axis being parallel of described interior pipe and outer tube, and form eccentric annulus between interior pipe and outer tube, multiple steam vent and inlet opening is had in the both sides of described outer tube, described steam vent is positioned at the wide side of eccentric annulus, and described inlet opening is positioned at the narrow side of eccentric annulus; The lower end sidewall of Connection Block is provided with elastic arc sheet, and described elastic arc sheet and steam vent heteropleural, the outer wall of described Connection Block has groove, and the movable end of elastic arc sheet is slidably arranged in groove.When the present invention works, eccentric joint is connected with the below of oil well pump, and separation tubing string entirety is placed in sleeve pipe, by being fixed on the elastic arc sheet on Connection Block outer wall, make the axis of the axis of outer tube and sleeve pipe not point-blank, the both sides that outer tube is corresponding are respectively equipped with inlet opening and steam vent, the separation of gas is then carried out starting in a flash of starting working of oil well pump, after gas-liquid mixture enters into the eccentric runner formed between outer tube and sleeve pipe, a speed difference is produced between not of uniform size two eccentric runners, make the speed of the fluid of the wide lateral movement at eccentric runner much larger than the fluid of the narrow lateral movement at eccentric runner, and then realize the initial gross separation of gas, when gas-liquid mixture after initial gross separation is along eccentric runner perpendicular flow, delayed and the low density fluid of the fluid that density is high, make to occur laminar flow in gas-liquid mixture, namely liquid slippage is caused, and then destroy the homogenieity of fluid, speed difference between liquid and gas is expanded further, and then the second time realizing gas-liquid is separated, gas-liquid mixture after second time is separated enters into its inside by the inlet opening on outer tube outer wall, and empty with interior pipe ring, enter pump by internal tube after the downward liquid flow that density is high, low density gas has steam vent to discharge, when taking out journey under oil well pump, annular space inner fluid keeps static, oil gas natural separation, and the efficiency of gas separaion improves, and then reduces gas to the impact of oil well pump, improves the pump efficiency of oil well pump.
Wherein, portion within the outer tube, interior pipe is same with the axis of outer tube not point-blank, when the gas-liquid mixture through secondary separation flows into outer tube by inlet opening, gas-liquid mixture can carry out being separated on two eccentric runners between sleeve pipe with outer tube again, namely at gas-liquid mixture while because of its gravity factor natural downslide, repeat the simple separation of gas-liquid, further reduction finally enters into the gas content of the liquid of interior pipe, strengthens the pump efficiency of oil pump; And one end of elastic arc sheet is fixed, the other end is slidably arranged in the groove on Connection Block outer wall, can eliminator be placed in the sleeve pipe of different pore size thus, ensure to be formed in sleeve pipe can carry out the first eccentric runner be separated for gas-liquid mixture by the deformability of elastic arc sheet self, substantially increase practicality of the present invention.
Be provided with runner in described Connection Block, and by plug, runner sealed.When being separated tubing string and leaving unused or need to overhaul, directly plug can be taken off, have runner to be discharged by fluid residual in outer tube and interior pipe, the work of handled easily personnel.
With the bottom of outer tube for horizon, along the axis number downwards of described outer tube, the level height residing for the center of circle of first steam vent is A, and the level height residing for the center of circle of first inlet opening is B, and meets A < B.Multiple steam vent and inlet opening is had in the both sides of outer tube, and the level height of first steam vent is less than the height of first inlet opening, make through secondary separation gas-liquid mixture after outer tube with interior pipe ring sky while, the gas of the overwhelming majority is all discharged from steam vent, avoid a large amount of gas to pile up between outer tube and interior pipe, and then improve the pump efficiency of oil well pump.
The present invention compared with prior art, has following advantage and beneficial effect:
1, the present invention portion within the outer tube, interior pipe is same with the axis of outer tube not point-blank, when the gas-liquid mixture through secondary separation flows into outer tube by inlet opening, gas-liquid mixture can carry out being separated on two eccentric runners between sleeve pipe with outer tube again, namely at gas-liquid mixture while because of its gravity factor natural downslide, repeat the simple separation of gas-liquid, further reduction finally enters into the gas content of the liquid of interior pipe, strengthens the pump efficiency of oil pump;
2, the present invention is when being separated tubing string and leaving unused or need to overhaul, and directly can be taken off by plug, have runner to be discharged by fluid residual in outer tube and interior pipe, the work of handled easily personnel;
3, the present invention has multiple steam vent and inlet opening in the both sides of outer tube, and the level height of first steam vent is less than the height of first inlet opening, make through secondary separation gas-liquid mixture after outer tube with interior pipe ring sky while, the gas of the overwhelming majority is all discharged from steam vent, avoid a large amount of gas to pile up between outer tube and interior pipe, and then improve the pump efficiency of oil well pump.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide the further understanding to the embodiment of the present invention, forms a application's part, does not form the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is structural representation of the present invention;
Mark and corresponding component title in accompanying drawing:
Pipe, 4-Connection Block, 5-elastic arc sheet, 6-plug, 7-steam vent, 8-inlet opening in 1-eccentric joint, 2-outer tube, 3-.
Detailed description of the invention
Clearly understand for making the object, technical solutions and advantages of the present invention, below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, and exemplary embodiment of the present invention and explanation thereof are only for explaining the present invention, not as a limitation of the invention.
Embodiment 1
As shown in Figure 1, eccentric joint 1, Connection Block 4 that the present embodiment comprises outer tube 2 and is connected with the two ends up and down of outer tube 2 respectively, also comprise the interior pipe 3 being arranged on outer tube 2 inside, one end of described interior pipe 3 is communicated with eccentric joint 1, the other end of interior pipe 3 is communicated with outer tube 2 inside, the axis being parallel of described interior pipe 3 and outer tube 2, and form eccentric annulus between interior pipe 3 and outer tube 2, multiple steam vent 7 and inlet opening 8 is had in the both sides of described outer tube 2, described steam vent 7 is positioned at the wide side of eccentric annulus, and described inlet opening 8 is positioned at the narrow side of eccentric annulus; The lower end sidewall of Connection Block 4 is provided with elastic arc sheet 5, and described elastic arc sheet 5 and steam vent 7 heteropleural, the outer wall of described Connection Block has groove, and the movable end of elastic arc sheet is slidably arranged in groove.When the present invention works, eccentric joint 1 is connected with the below of oil well pump, and separation tubing string entirety is placed in sleeve pipe, by being fixed on the elastic arc sheet 5 on Connection Block 4 outer wall, make the axis of the axis of outer tube 2 and sleeve pipe not point-blank, the both sides of outer tube 2 correspondence are respectively equipped with inlet opening 8 and steam vent 7, the separation of gas is then carried out starting in a flash of starting working of oil well pump, after gas-liquid mixture enters into the eccentric runner formed between outer tube 2 and sleeve pipe, a speed difference is produced between not of uniform size two eccentric runners, make the speed of the fluid of the wide lateral movement at eccentric runner much larger than the fluid of the narrow lateral movement at eccentric runner, and then realize the initial gross separation of gas, when gas-liquid mixture after initial gross separation is along eccentric runner perpendicular flow, delayed and the low density fluid of the fluid that density is high, make to occur laminar flow in gas-liquid mixture, namely liquid slippage is caused, and then destroy the homogenieity of fluid, speed difference between liquid and gas is expanded further, and then the second time realizing gas-liquid is separated, gas-liquid mixture after second time is separated enters into its inside by the inlet opening 8 on outer tube 2 outer wall, and with interior pipe 3 annular space, enter pump by interior pipe 3 inside after the downward liquid flow that density is high, low density gas has steam vent 7 to discharge, when taking out journey under oil well pump, annular space inner fluid keeps static, oil gas natural separation, and the efficiency of gas separaion improves, and then reduces gas to the impact of oil well pump, improves the pump efficiency of oil well pump.
Wherein, inner at outer tube 2, interior pipe 3 is same with the axis of outer tube 2 not point-blank, when flowing into outer tube 2 inside through the gas-liquid mixture of secondary separation by inlet opening 8, gas-liquid mixture can carry out being separated on two eccentric runners between sleeve pipe with outer tube 2 again, namely at gas-liquid mixture while because of its gravity factor natural downslide, repeat the simple separation of gas-liquid, further reduction finally enters into the gas content of the liquid of interior pipe 3, strengthens the pump efficiency of oil pump; And one end of elastic arc sheet 5 is fixed, the other end is slidably arranged in the groove on Connection Block 4 outer wall, can eliminator be placed in the sleeve pipe of different pore size thus, ensure to be formed in sleeve pipe can carry out the first eccentric runner be separated for gas-liquid mixture by the deformability of elastic arc sheet 5 self, substantially increase practicality of the present invention.
Further, with the bottom of outer tube 2 for horizon, along the axis number downwards of described outer tube 2, the level height residing for the center of circle of first steam vent 7 is A, and the level height residing for the center of circle of first inlet opening 8 is B, and meets A < B.Multiple steam vent 7 and inlet opening 8 is had in the both sides of outer tube 2, and the level height of first steam vent 7 is less than the height of first inlet opening 8, make through secondary separation gas-liquid mixture after outer tube 2 with interior pipe 3 annular space while, the gas of the overwhelming majority is all discharged from steam vent 7, avoid a large amount of gas to pile up between outer tube 2 and interior pipe 3, and then improve the pump efficiency of oil well pump.
Above-described detailed description of the invention; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; the protection domain be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. DH eccentric center gas separator, the eccentric joint (1) comprising outer tube (2) and be connected with the two ends up and down of outer tube (2) respectively, Connection Block (4), it is characterized in that: also comprise and be arranged on the inner interior pipe (3) of outer tube (2), one end of described interior pipe (3) is communicated with eccentric joint (1), the other end of interior pipe (3) is communicated with outer tube (2) inside, the axis being parallel of described interior pipe (3) and outer tube (2), and form eccentric annulus between interior pipe (3) and outer tube (2), multiple steam vent (7) and inlet opening (8) is had in the both sides of described outer tube (2), described steam vent (7) is positioned at the wide side of eccentric annulus, described inlet opening (8) is positioned at the narrow side of eccentric annulus, the lower end sidewall of Connection Block (4) is provided with elastic arc sheet (5), and described elastic arc sheet (5) and steam vent (7) heteropleural, the outer wall of described Connection Block (4) has groove, and the movable end of elastic arc sheet (5) is slidably arranged in groove.
2. DH eccentric center gas separator according to claim 1, is characterized in that: described Connection Block is provided with runner in (4), and is sealed by runner by plug (6).
3. DH eccentric center gas separator according to claim 1 and 2, it is characterized in that: with the bottom of outer tube (2) for horizon, along the axis number downwards of described outer tube (2), the level height residing for the center of circle of first steam vent (7) is A, the level height residing for the center of circle of first inlet opening (8) is B, and meets A < B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510118423.8A CN104806224A (en) | 2015-03-18 | 2015-03-18 | Down-hole eccentric gas separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510118423.8A CN104806224A (en) | 2015-03-18 | 2015-03-18 | Down-hole eccentric gas separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104806224A true CN104806224A (en) | 2015-07-29 |
Family
ID=53691376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510118423.8A Pending CN104806224A (en) | 2015-03-18 | 2015-03-18 | Down-hole eccentric gas separator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104806224A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108467825A (en) * | 2018-06-29 | 2018-08-31 | 青岛涌略环境科学研究院有限公司 | A kind of quick dry method anaerobic reaction device of house refuse |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2378100Y (en) * | 1999-06-18 | 2000-05-17 | 吐哈石油勘探开发指挥部钻采工艺研究院 | Eccentric gas separator |
| US6260626B1 (en) * | 1999-02-24 | 2001-07-17 | Camco International, Inc. | Method and apparatus for completing an oil and gas well |
| CN2693990Y (en) * | 2003-12-24 | 2005-04-20 | 大港油田集团有限责任公司 | Inner offset gas sand anchor |
| CN2714803Y (en) * | 2004-06-22 | 2005-08-03 | 李玉东 | Downhole gas separator |
| US20110209866A1 (en) * | 2007-08-28 | 2011-09-01 | Daqing Oilfield Co., Ltd., | corrugated settling cup and a multi-cup uniform flux gas anchor |
-
2015
- 2015-03-18 CN CN201510118423.8A patent/CN104806224A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6260626B1 (en) * | 1999-02-24 | 2001-07-17 | Camco International, Inc. | Method and apparatus for completing an oil and gas well |
| CN2378100Y (en) * | 1999-06-18 | 2000-05-17 | 吐哈石油勘探开发指挥部钻采工艺研究院 | Eccentric gas separator |
| CN2693990Y (en) * | 2003-12-24 | 2005-04-20 | 大港油田集团有限责任公司 | Inner offset gas sand anchor |
| CN2714803Y (en) * | 2004-06-22 | 2005-08-03 | 李玉东 | Downhole gas separator |
| US20110209866A1 (en) * | 2007-08-28 | 2011-09-01 | Daqing Oilfield Co., Ltd., | corrugated settling cup and a multi-cup uniform flux gas anchor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108467825A (en) * | 2018-06-29 | 2018-08-31 | 青岛涌略环境科学研究院有限公司 | A kind of quick dry method anaerobic reaction device of house refuse |
| CN108467825B (en) * | 2018-06-29 | 2023-06-30 | 青岛涌略环境科学研究院有限公司 | Rapid dry anaerobic reaction device for household garbage |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150729 |
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| RJ01 | Rejection of invention patent application after publication |