CN104047588A - Underground gas-liquid separation tubular column - Google Patents
Underground gas-liquid separation tubular column Download PDFInfo
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- CN104047588A CN104047588A CN201410278487.XA CN201410278487A CN104047588A CN 104047588 A CN104047588 A CN 104047588A CN 201410278487 A CN201410278487 A CN 201410278487A CN 104047588 A CN104047588 A CN 104047588A
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- oil
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- packer
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Abstract
The invention discloses an underground gas-liquid separation tubular column. The pipe wall of an oil pumping pipe inside the tubular column is provided with an oil inlet hole located above a packer, the packer and/or the oil pumping pipe is internally provided with a communication channel for communicating the upper side with the lower side of the packer, the communication channel and an oil pumping channel formed by the oil pumping pipe are arranged in parallel, when the underground gas-liquid separation tubular column is used, gas-oil mixtures in an oil layer pass through the communication channel on the packer and then enter the open space, outside the oil pumping pipe, above the packer, gas in the gas-oil mixtures in the open space ascends through the slippage effect, oil in the gas-oil mixtures in the open space descend to achieve the gas-oil separation effect, the separated oil flows into the oil pumping channel through the oil inlet hole and is pumped out, the gas will be discharged out of the space outside the oil pumping pipe, the open space is wide, pressure changes are small under the condition that the gas-oil mixtures are supplemented continuously, and therefore the gas-oil separation efficiency is greatly improved.
Description
Technical field
The present invention relates to oilfield exploitation field, relate in particular to a kind of down-hole gas-liquid separator tube post.
Background technology
At present, in oilfield development process, most oil fields are in the deep well pump productive life, be all to produce lower than under saturation pressure, even produce under above bubble point pressure, the pressure of pumping hole is also lower than saturation pressure, therefore, in the time of oil well pump pumping, always gas-liquid two-phase enters pump simultaneously.Because gas has very strong dilatancy and compressibilty, when air containing fluid enters oil well pump because the expansion of gas occupies pump barrel space, while discharging liquid, affect the discharge rate of oil well pump because of the compression of gas, thereby pumping efficiency of oil pump is reduced, more seriously, at the higher pumpingh well of gas liquid ratio, in the time that the occupied volume of the gas in pump chamber is enough large, just there will be " gas lock " phenomenon, now in whole upper and lower stroke, just intracavity gas is expanding and compression, and there is no liquid lifting.
Chinese patent literature CN2471930Y discloses a kind of Underwell oil-gas separator, this gs-oil separator comprises 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, on the sidewall on the top of outer tube, offer inlet opening, in use, first gas mixture in oil well enters into outer tube by the upper inlet opening on outer tube, entering fluid in the mixture in outer tube sinks and is taken away by oil pump from the lower inlet opening of central tube, gas enters sleeve pipe by the steam vent of outer tube upper end.Although this structure has been utilized gas-liquid slippage effect, because gas mixture is to separate in outer tube, in the situation that air-fuel mixture logistics capacity is constant, in outer tube, be subject to spatial limitation, pressure is larger, and therefore separating effect is poor, separative efficiency is lower (pressure is lower, and slippage effect is larger).
Summary of the invention
The object of this invention is to provide the down-hole gas-liquid separator tube post that a kind of oil-gas separation efficiency is high.
In order to realize above object, in the present invention, the technical scheme of down-hole gas-liquid separator tube post is as follows:
Down-hole gas-liquid separator tube post, comprise the packer of oil pick-up tube and upper setting thereof, on the tube wall of oil pick-up tube, offer the fuel feed hole in packer top, on packer and/or in oil pick-up tube, be provided with the communicating passage that is communicated with the upper and lower side of packer, the oil pumping channel parallel that communicating passage and oil pick-up tube form arranges.
Communicating passage is the communicating pipe of being located in oil pick-up tube, and oil pumping passage is between the outer tube wall of communicating pipe and the inner tubal wall of oil pick-up tube.
Coaxially be arranged on communicating pipe in oil pick-up tube, oil pumping passage is the circular passage between communicating pipe and oil pick-up tube.
In oil pick-up tube, be provided with oil pick-up tube inner chamber every the separator that is made as upper and lower section, hypomere is provided with oil and gas import, and described fuel feed hole is in epimere, and the lower end of described communicating pipe is communicated with oil and gas import through separator and lower port.
On the tube wall of oil and gas import in oil pick-up tube, oil pick-up tube is provided with the plug in oil and gas import below.
Oil and gas import is made up of the sieve aperture on phloem set on oil pick-up tube lower end.
Fuel feed hole is made up of the sieve aperture on the set phloem of oil pick-up tube epimere.
Fuel feed hole is under the mouth of pipe of the upper end of communicating pipe.
The upper end of oil pick-up tube is equipped with crossover sub, and crossover sub is provided with the Switching-through channel that is communicated with the upper end mouth of pipe of communicating pipe and the oil pick-up tube external space of packer top.
Oil pick-up tube is communicated with in the import of oil well pump by crossover sub, and crossover sub is provided with the interface channel that is communicated with the oil pumping outlet of passage and the import of oil well pump.
The present invention offers the fuel feed hole above packer on the tube wall of oil pick-up tube, on packer and/or in oil pick-up tube, be provided with and be communicated with on packer, the communicating passage of downside, the oil pumping channel parallel that communicating passage and oil pick-up tube form arranges, in use, gas mixture in oil reservoir is after the communicating passage on packer, gas mixture can enter the clearing of packer top beyond oil pick-up tube, in this clearing, in gas mixture, rise by slippage effect gas, fluid sinks to reach the effect of Oil-gas Separation, fluid after separation is flowed in oil pumping passage and is drawn out of by fuel feed hole, gas is discharged from from oil pick-up tube space in addition, and clearing is more abundant, in the situation that gas mixture constantly fills into, it is not very greatly that pressure changes, so the efficiency of Oil-gas Separation will improve greatly, thereby the pressure rising problem that the limitation that has reduced gas mixture space of living in Oil-gas Separation process causes.
Brief description of the drawings
Fig. 1 is the structural representation of an embodiment of the present invention.
Detailed description of the invention
The embodiment of down-hole gas-liquid separator tube post in the present invention: as shown in Figure 1, this down-hole gas-liquid separator tube post is a kind of downhole gravity gas-liquid separation process pipe string, it comprises the oil well pump 10 of oil pick-up tube 7 and upper end assembling thereof and the packer 3 of lower end assembling, oil pick-up tube 7 again by the separator 5 of its mounted inside every being made as epimere and hypomere, the hypomere of oil pick-up tube 7 is through packer 3, and on hypomere, in packer, the position below 3 is provided with the oil and gas import 2 on tube wall and the plug 1 in oil and gas import 2 belows; The epimere of oil pick-up tube 7 is communicated with in the import of oil well pump 10 by crossover sub 9, and crossover sub 9 is provided with the interface channel that is communicated with the oil pumping outlet of passage and the import of oil well pump 10, and is provided with fuel feed hole 6 in the position near separator 5 on the tube wall of epimere.In oil pick-up tube 7, be coaxially equipped with communicating pipe 4, the lower end mouth of pipe of communicating pipe 4 is communicated with oil and gas import 2 and in oil and gas import 2 tops, the upper end mouth of pipe of communicating pipe 4 is communicated with oil pick-up tube 7 external spaces of packer 3 tops by the Switching-through channel of offering on crossover sub 9.The epimere of oil pick-up tube 7 and the circular passage between communicating pipe 4 form the oil pumping passage that is communicated with fuel feed hole 6 and oil pump, and the pipe internal channel of communicating pipe 4 forms the communicating passage that is communicated with packer 3 upper and lower sides.
In the present embodiment, plug 1 is selected plug, and oil and gas import 2 and fuel feed hole 6 form by the sieve aperture on the phloem of oil pick-up tube 7 upper lock tongues, and packer 3 is selected and set Y221 packer 3, and separator 5 is selected annular sealing drum.
In use, after all instruments have been connected, be lowered to precalculated position, the tubing string of above carrying, turn clockwise, transfers packer 3 completions.Owing to making gas-liquid mixture stream through oil and gas import 2, flow through communicating pipe 4, flow in the clearing on packer 3 tops through crossover sub 9, there are time and the space of larger gas-liquid separation at clearing, be conducive to the eliminating of free gas, make to apply at the scene point gas effective, can effectively reduce the impact of gas on pump work, improve pump efficiency, there is better economic benefit.
In the above-described embodiments, plug is plug, and plug is easily mounted in oil pick-up tube, and in other embodiments, plug can be also blind flange etc.
In the above-described embodiments, oil pick-up tube is structure as a whole, and in other embodiments, oil pick-up tube can be to be also formed by connecting by more than two sections tubing.
In the above-described embodiments, communicating pipe is in oil pick-up tube, in order to reduce the volume of whole tubing string, improve globality, in other embodiments, communicating pipe also can be outside oil pick-up tube, and even communicating pipe also can get rid of, and replace with the passage of the upper and lower side of connection of offering on packer, only need to ensure the oil pumping channel parallel setting of communicating passage and oil pick-up tube formation.
In the above-described embodiments, surround oil pick-up tube and communicating pipe annular oil pumping passage, in other embodiments, oil pumping passage can not be also annular, and corresponding communicating pipe not necessarily coaxially arranges in oil pick-up tube.
Claims (10)
1. down-hole gas-liquid separator tube post, it is characterized in that, comprise the packer of oil pick-up tube and upper setting thereof, on the tube wall of oil pick-up tube, offer the fuel feed hole in packer top, on packer and/or in oil pick-up tube, be provided with the communicating passage that is communicated with the upper and lower side of packer, the oil pumping channel parallel that communicating passage and oil pick-up tube form arranges.
2. down-hole according to claim 1 gas-liquid separator tube post, is characterized in that, communicating passage is the communicating pipe of being located in oil pick-up tube, and oil pumping passage is between the outer tube wall of communicating pipe and the inner tubal wall of oil pick-up tube.
3. down-hole according to claim 2 gas-liquid separator tube post, is characterized in that, is coaxially arranged on communicating pipe in oil pick-up tube, and oil pumping passage is the circular passage between communicating pipe and oil pick-up tube.
4. down-hole according to claim 2 gas-liquid separator tube post, it is characterized in that, in oil pick-up tube, be provided with oil pick-up tube inner chamber every the separator that is made as upper and lower section, hypomere is provided with oil and gas import, described fuel feed hole is in epimere, and the lower end of described communicating pipe is communicated with oil and gas import through separator and lower port.
5. down-hole according to claim 4 gas-liquid separator tube post, is characterized in that, on the tube wall of oil and gas import in oil pick-up tube, oil pick-up tube is provided with the plug in oil and gas import below.
6. down-hole according to claim 4 gas-liquid separator tube post, is characterized in that, oil and gas import is made up of the sieve aperture on phloem set on oil pick-up tube lower end.
7. down-hole according to claim 4 gas-liquid separator tube post, is characterized in that, fuel feed hole is made up of the sieve aperture on the set phloem of oil pick-up tube epimere.
8. down-hole according to claim 4 gas-liquid separator tube post, is characterized in that, fuel feed hole is under the mouth of pipe of the upper end of communicating pipe.
9. down-hole according to claim 4 gas-liquid separator tube post, is characterized in that, the upper end of oil pick-up tube is equipped with crossover sub, and crossover sub is provided with the Switching-through channel that is communicated with the upper end mouth of pipe of communicating pipe and the oil pick-up tube external space of packer top.
10. down-hole according to claim 9 gas-liquid separator tube post, is characterized in that, oil pick-up tube is communicated with in the import of oil well pump by crossover sub, and crossover sub is provided with the interface channel that is communicated with the oil pumping outlet of passage and the import of oil well pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410278487.XA CN104047588A (en) | 2014-06-20 | 2014-06-20 | Underground gas-liquid separation tubular column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410278487.XA CN104047588A (en) | 2014-06-20 | 2014-06-20 | Underground gas-liquid separation tubular column |
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| CN104047588A true CN104047588A (en) | 2014-09-17 |
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| CN201410278487.XA Pending CN104047588A (en) | 2014-06-20 | 2014-06-20 | Underground gas-liquid separation tubular column |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761601A (en) * | 2016-12-01 | 2017-05-31 | 中国石油天然气股份有限公司 | Oil well underground gas collection mixed pumping process pipe column |
| CN110593846A (en) * | 2019-10-15 | 2019-12-20 | 闫波 | Gas well gas-liquid separate production well completion pipe string |
| CN111005711A (en) * | 2019-11-19 | 2020-04-14 | 中国石油天然气股份有限公司 | Oil well underground oil-gas separation device and method |
| CN111520116A (en) * | 2020-03-31 | 2020-08-11 | 东营市朝阳石油科技有限公司 | Oil-gas lifting device and method for high oil-gas ratio oil field |
| CN113404468A (en) * | 2021-08-02 | 2021-09-17 | 西南石油大学 | Novel gas-liquid separate production pipe column for underground drainage and gas production of sulfur-containing gas well |
| CN113756757A (en) * | 2021-10-27 | 2021-12-07 | 中联煤层气国家工程研究中心有限责任公司 | Compound series connection row of coal bed gas well adopts device |
| CN113898319A (en) * | 2020-06-22 | 2022-01-07 | 中国石油化工股份有限公司 | High-gas-content well sucker-rod pump lifting effect-improving device and process pipe column |
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| CN201778781U (en) * | 2010-09-01 | 2011-03-30 | 大港油田集团有限责任公司 | Sand jamming prevention oil extraction production tubular column |
| CN201924839U (en) * | 2010-12-23 | 2011-08-10 | 中国石油天然气股份有限公司 | Once production tubular column |
| CN102242621A (en) * | 2011-07-18 | 2011-11-16 | 天津市滨海新区龙新石油机械制造有限公司 | Negative pressure de-plugging and oil extraction process and device |
| CN102268976A (en) * | 2011-06-21 | 2011-12-07 | 中国石油天然气股份有限公司 | Pipe column for sleeve-type variable water outlet well |
| CN202731871U (en) * | 2012-06-01 | 2013-02-13 | 中国石油天然气股份有限公司 | Combined gas anchor |
| CN204098892U (en) * | 2014-06-20 | 2015-01-14 | 中国石油化工股份有限公司 | A kind of down-hole gas-liquid separator tube post |
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2014
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN86106505A (en) * | 1985-11-22 | 1987-05-27 | 奇弗龙研究公司 | Gas anchor device at bottom of well |
| US5240073A (en) * | 1992-04-03 | 1993-08-31 | Corpoven, S.A. | Down-hole concentric chamber gas separator and method |
| CN2251636Y (en) * | 1996-05-09 | 1997-04-09 | 大庆石油管理局试油试采公司 | Separate zone production synchronous oil pump |
| CA2455487C (en) * | 2004-01-21 | 2008-04-15 | Vernon E. Vossler | Gas lift apparatus for a well |
| CN101025082A (en) * | 2005-11-29 | 2007-08-29 | 英特卫普有限公司 | Downhole gas separator |
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| CN204098892U (en) * | 2014-06-20 | 2015-01-14 | 中国石油化工股份有限公司 | A kind of down-hole gas-liquid separator tube post |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761601A (en) * | 2016-12-01 | 2017-05-31 | 中国石油天然气股份有限公司 | Oil well underground gas collection mixed pumping process pipe column |
| CN110593846A (en) * | 2019-10-15 | 2019-12-20 | 闫波 | Gas well gas-liquid separate production well completion pipe string |
| CN111005711A (en) * | 2019-11-19 | 2020-04-14 | 中国石油天然气股份有限公司 | Oil well underground oil-gas separation device and method |
| CN111520116A (en) * | 2020-03-31 | 2020-08-11 | 东营市朝阳石油科技有限公司 | Oil-gas lifting device and method for high oil-gas ratio oil field |
| CN113898319A (en) * | 2020-06-22 | 2022-01-07 | 中国石油化工股份有限公司 | High-gas-content well sucker-rod pump lifting effect-improving device and process pipe column |
| CN113404468A (en) * | 2021-08-02 | 2021-09-17 | 西南石油大学 | Novel gas-liquid separate production pipe column for underground drainage and gas production of sulfur-containing gas well |
| CN113756757A (en) * | 2021-10-27 | 2021-12-07 | 中联煤层气国家工程研究中心有限责任公司 | Compound series connection row of coal bed gas well adopts device |
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Application publication date: 20140917 |
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