CN103306641A - Gas handling and gas lift production integral pipe column - Google Patents
Gas handling and gas lift production integral pipe column Download PDFInfo
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- CN103306641A CN103306641A CN2012100620503A CN201210062050A CN103306641A CN 103306641 A CN103306641 A CN 103306641A CN 2012100620503 A CN2012100620503 A CN 2012100620503A CN 201210062050 A CN201210062050 A CN 201210062050A CN 103306641 A CN103306641 A CN 103306641A
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Abstract
The invention discloses a gas handling and gas lift production integral pipe column, which is designed for meeting the requirement on the development of a thick oil reservoir. The pipe column mainly comprises fixed high-pressure gas lift working cylinders, a pump base, a bow spring centering device, a sealed insertion tube, a permanent packer, a pull rod, a thinning T-joint, a thinning valve, a plunger and the like, wherein the fixed high-pressure gas lift working cylinders are connected from top to bottom through oil pipes; and the pull rod, the thinning T-joint, the thinning valve, the plunger and the like construct a sucker rod string. According to the pipe column, switching among three functions, namely, gas handling, sucker-rod pump production and gas lift production is realized innovatively, and a thinning function is realized for a hollow rod of a thick oil well. One set of gas lift ground pressure boosting equipment and high-pressure gas injection pipeline can be shared by gas handling, so that a gas lift lifting ground gas injection system and an oil gas collecting and conveying system are not required to be constructed, and the construction time of ground equipment and pipe networks is shortened. According to the pipe column, a gas lift oil producing technique is applied to thick oil innovatively, so that the problem of incapability of doping thin oil due to insufficient thin oil resources is solved. According the pipe column disclosed by the invention, the operation and production are integrated, so that the ascending and descending times of an underground pipe column can be reduced, the operation procedures are simplified, the cost is lowered, and the production time is shortened.
Description
Technical field
The present invention relates to that a kind of natural gas is handled up and gaslift production integration tubing string, belong to the Development of Viscous Crude Oil technical field.
Background technology
Along with the World Economics rapid growth, demand to oil also increases rapidly, in conventional oil resource situation less and less, development and use are accounted for the viscous crude resource of Global Oil resource 70%, according to the prediction of Cambridge energy research association, the annual production of viscous crude will be with annual 150% to 300% speed increase in the time in 25 years from now on, therefore, the exploitation of viscous crude resource becomes the important strategy that the energy is taken over.
At present the natural gas mining type of handling up is one of major way of heavy crude heat extraction, but the Effective Raise heavy oil production, but have certain production cycle.At first, along with the exploitation of heavy crude reservoir, heavy oil wells can enter the moisture mining phase of middle height, and natural gas production cycle of handling up shortens the effect of increasing production variation; Secondly in heavy oil wells was handled up the production cycle, along with the production of oil well, output can reduce gradually, when production decline during to limiting value, need to carry out that handle up the second time or directly turn taking out.Therefore, at present, the natural gas throughput operation often combines with sucker rod pump production, solves natural gas production cycle of handling up to finish rear heavy oil wells and take over problem, but for the high viscosity heavy oil wells, still can't directly use sucker rod pump and turn the pumping product.For this reason supporting mix rare technology on the pump, by hollow stem thin oil is injected in the oil pipe, reduce viscosity of thickened oil, realize that the natural gas rear sucker rod pump of handling up turns the purpose of taking out the lifting viscous crude.
Owing to the continuous minimizing of global thin oil resource, it is limited gradually that sucker rod pump will be mixed the thin oil mode of production now.Therefore, in the urgent need to a kind of viscous crude completion tubular column that discharges the thin oil resource.
Summary of the invention
The object of the present invention is to provide a kind of natural gas to handle up and gaslift production integration tubing string, it not only can be used for viscous crude natural gas throughput operation, simultaneously also can satisfy the well of handling up and carry out sucker rod pump production or gas-lift production, but one-trip string realizes that natural gas is handled up, the switching of sucker rod pump production and three functions of gas-lift production, string matching is mixed rare system simultaneously, realizes rare function of mixing of heavy oil wells.
Concrete technology contents of the present invention is as follows:
Natural gas is handled up and gaslift production integration tubing string is located in the sleeve pipe, it connects the fixed high-pressure gas-lift working barrel that one or more levels equates with pipe aperture successively by oil pipe from top to bottom, the fixed high-pressure gas-lift working barrel is provided with gas lift valve outward, all is connected with oil pipe between each fixed high-pressure gas-lift working barrel.Connect pump seat in final stage fixed high-pressure gas-lift working barrel lower end by oil pipe, the pump seat lower end connects bow spring centralizer by oil pipe, bow spring centralizer lower end directly connects the sealing intubate, sealing intubate lower end directly connects permanent packer, the permanent packer lower end directly connects bow spring formula centralizer, and bow spring formula centralizer lower end connects horn mouth by oil pipe.The position of permanent packer is above oil reservoirs.
Handle up with natural gas and the rod string of gaslift production integration string matching is a built spar, its from top to bottom by pull bar, mix rare threeway, polished rod, hollow stem, mix rare valve, solid hopkinson bar, weighted lever and plunger and be connected in sequence, be ball-and-seat as rare valve of mixing of the rare point of lifting thickened oil.
Tubing string of the present invention possesses following function:
1) fixed high-pressure gas-lift working barrel: for gas lift valve provides working material.Gas lift valve is installed in outside the fixed high-pressure gas-lift working barrel, can guarantee fixed high-pressure gas-lift working barrel and oil pipe latus rectum, realizes that sucker rod pump is by the purpose of seating nipple.
2) gas lift valve: being fixed gas lift valve, is that natural gas is handled up and the core tool of gaslift production integration tubing string gaslift gas injection, is used for the control of gas-lift production gas injection rate and off-load, reaches lifting wellbore fluids purpose.
3) sucker rod pump: be that the well of handling up turns the down-hole corollary equipment of taking out, complete by pump seat and plunger assembling.Its operating principle is: plunger is finished the up-down stroke of sucker rod pump under pumping of sucker rod drives, in the upstroke process, rod string moves upward with plunger, is the process that sucks liquid, well head discharge liquid in the pump; In the down stroke process, rod string moves downward with plunger, the process of the discharge opeing in the oil pipe that is pump.In up-down stroke, the bearing load that reduces rod string is the depth of setting of restriction sucker rod pump and the key factor of the wider application of its oil production method of restriction.This invention rod string adopts compound tube, can reduce sucker rod pump load, can satisfy the rod string requirement of strength, can also realize that hollow stem mixes rarely simultaneously, more is applicable to rare the helping of mixing of viscous crude and takes out when solution reduces the load problem.
4) permanent packer: the oil jacket annular space is played the packing effect.Oil pipe inner high voltage gas enters the oil jacket annular space by horn mouth in the time of at first can avoiding the natural gas throughput operation, and sleeve pipe is played a protective role; Secondly oil jacket annular space gases at high pressure enter oil pipe by horn mouth in the time of can avoiding gas-lift production, to improve the gaslift lifting efficiency; Again can avoid the gaslift gases at high pressure to directly act on reservoir, reservoir is played a protective role.
5) sealing intubate: be the kit of permanent packer, lower tubular column in the connection is used for locking and seal pack device.
6) bow spring centralizer: when bow spring centralizer is used in conjunction with the sealing intubate, be connected to sealing intubate upper end, play the effect of righting sealing intubate, make the sealing intubate not be subjected to Well Deflection Influence, insert smoothly in the permanent packer; When the bow spring holds up centralizer and permanent packer to be used in conjunction with, be connected to the permanent packer lower end, play the effect of righting permanent packer, when avoiding packer to go into the well and casing wall directly bump or rub, simultaneously, guaranteeing to seal intubate inserts in the permanent packer smoothly.
7) horn mouth: being positioned at tubing string bottom, is the end sign of tubing string.
The invention has the advantages that can realize innovatively that natural gas is handled up, the switching of sucker rod pump production, three functions of gas-lift production, and realize that the heavy oil wells hollow stem mixes rare function.In the situation that thin oil resource abundance or natural gas supply deficiency, the well of handling up can directly turn to be drawn into to go to be produced; When natural gas during in liberal supply or thin oil shortage of resources, the natural gas well of handling up directly turns gaslift and produces.Because gaslift ground supercharging equipment and high-pressure gas injection pipeline and natural gas are handled up and can be shared a cover, therefore, need not to build gaslift lifting ground injecting gas system and oil-gas gathering and transportation system again, have shortened ground installation and pipeline network construction time.The successful development of this tubing string is applied to viscous crude with the gas-lift production Technique Popularizing innovatively, has solved the thin oil inadequate resource and can't realize mixing on the pump problem of thin oil.Because this tubing string is integrated in one operation and production, therefore, can reduce down-hole string and remove number of times, simplify flow chart, reduce cost, shorten accounting for the product time.
Description of drawings
Fig. 1 handles up and gaslift production integration tubular column structure schematic diagram for being used for natural gas.
Handle up and the permanent packer setting pipe rod structure schematic diagram of gaslift production integration tubing string by natural gas in order to be used for for Fig. 2.
Fig. 3 is sucker-rod pumping roofbolt schematic diagram.
The specific embodiment
Embodiment:
Referring to figs. 1 through inventive embodiment is further specified:
Natural gas is handled up and gaslift production integration tubing string is located in the sleeve pipe 9, it connects one or more levels fixed high-pressure gas-lift working barrel 2 that equates with oil pipe 1 internal diameter from top to bottom successively, fixed high-pressure gas-lift working barrel 2 peripheral hardware gas lift valves 3 all are connected with oil pipe 1 between each fixed high-pressure gas-lift working barrel 2.Connect pump seat 4 in final stage fixed high-pressure gas-lift working barrel 2 lower ends by oil pipe 1, pump seat 4 lower ends connect bow spring centralizer 5 by oil pipe 1, bow spring centralizer 5 lower ends directly connect sealing intubate 6, sealing intubate 6 lower ends directly connect permanent packer 7, permanent packer 7 lower ends directly connect bow spring formula centralizer 5, and bow spring formula centralizer 5 lower ends connect horn mouth 8 by oil pipe 1.About 50 meters above oil reservoirs 10, the position of permanent packer 7.
Fixed high-pressure gas-lift working barrel 2 adopts special substance, special button-type, monolithic construction to process, internal pressure strength 105MPa, and the hermetic seal ability reaches 55MPa; The operating pressure of the gas lift valve 3 that matches with fixed high-pressure gas-lift working barrel 2 can reach 55MPa, and the hermetic seal ability reaches 55MPa; Other kits of tubing string all adopt hermetic seal button-type, special substance to process.
Natural gas handles up and the setting of gaslift production integration tubing string packer, Completion Operations are as follows:
First time completion tubular column as shown in Figure 2, for setting tubing string, this tubing string is located in the sleeve pipe 9, connect bow spring centralizer 5 by oil pipe 1, bow spring centralizer 5 lower ends directly connect hydraulic setting tool 11, hydraulic setting tool 11 lower ends connect permanent packer 7, and permanent packer 7 lower ends directly connect bow spring formula centralizer 5, and bow spring formula centralizer 5 connects horn mouth 8 by oil pipe 1.The position of permanent packer 7 is about 50 meters on the top of oil reservoirs 10.
After this sets tubing string G.I.H design attitude, set permanent packer 7 from oil pipe 1 pitching, realize the effect of cartridge Seal Oil cover annular space.From well, trip out hydraulic setting tool 11 and top tubing string thereof, carry out completion second time.
Second time completion tubular column as shown in Figure 1 is for natural gas of the present invention is handled up and gaslift production integration completion tubular column.After in the tubing string lower going-into-well on sealing intubate 6 and top thereof, sealing intubate 6 is inserted in the permanent packer 7, but the runner between its hermetically-sealed construction effective sealing permanent packer 7 inside and the sealing intubate 6 prevents that fluid from flowing out, and realizes the purpose of packing oil jacket annular space.
As shown in Figure 3, handle up with natural gas and the rod string of gaslift production integration string matching is a built spar, its from top to bottom by pull bar 12, mix rare threeway 13, polished rod 14, hollow stem 15, mix rare valve 16, solid hopkinson bar 17, weighted lever 18 and plunger 19 and be connected in sequence.Mixing rare valve 16 is ball-and-seats, is the rare point of lifting thickened oil, and thin oil enters polished rod 14 by mixing rare threeway 13, enters hollow stem 15 again, enters oil pipe 1 inside by mixing rare valve 16, mutually mixes with viscous crude, to reduce viscosity of thickened oil.
Claims (1)
1. a natural gas is handled up and gaslift production integration tubing string, it is characterized in that:
This tubing string is located in the sleeve pipe (9), it connects the fixed high-pressure gas-lift working barrel (2) that one or more levels equates with oil pipe (1) internal diameter successively by oil pipe (1) from top to bottom, fixed high-pressure gas-lift working barrel (2) peripheral hardware gas lift valve (3) all is connected with oil pipe (1) between each fixed high-pressure gas-lift working barrel (2); Connect pump seat (4) in final stage fixed high-pressure gas-lift working barrel (2) lower end by oil pipe (1), pump seat (4) lower end connects bow spring centralizer (5) by oil pipe (1), bow spring centralizer (5) lower end directly connects sealing intubate (6), sealing intubate (6) lower end directly connects permanent packer (7), permanent packer (7) lower end directly connects bow spring formula centralizer (5), and bow spring formula centralizer (5) lower end connects horn mouth (8) by oil pipe (1); The position of permanent packer (7) is in the top of oil reservoirs (10).
Handle up with natural gas and the rod string of gaslift production integration string matching is a built spar, its from top to bottom by pull bar (12), mix rare threeway (13), polished rod (14), hollow stem (15), mix rare valve (16), solid hopkinson bar (17), weighted lever (18) and plunger (19) and be connected in sequence, be ball-and-seat as the rare valve (16) of mixing of the rare point of lifting thickened oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210062050.3A CN103306641B (en) | 2012-03-09 | 2012-03-09 | Natural gas is handled up and gaslift production integration tubing string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210062050.3A CN103306641B (en) | 2012-03-09 | 2012-03-09 | Natural gas is handled up and gaslift production integration tubing string |
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| Publication Number | Publication Date |
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| CN103306641A true CN103306641A (en) | 2013-09-18 |
| CN103306641B CN103306641B (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210062050.3A Active CN103306641B (en) | 2012-03-09 | 2012-03-09 | Natural gas is handled up and gaslift production integration tubing string |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812510A (en) * | 2015-12-01 | 2017-06-09 | 中国石油天然气股份有限公司 | Tubing string and completion method |
| CN110359875A (en) * | 2018-03-26 | 2019-10-22 | 中国石油天然气股份有限公司 | Extend airlift unit and method |
| CN114562241A (en) * | 2022-03-04 | 2022-05-31 | 中海石油(中国)有限公司 | Bypass continuous pipe gas injection gas lift pipe column system |
Citations (4)
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| US4454918A (en) * | 1982-08-19 | 1984-06-19 | Shell Oil Company | Thermally stimulating mechanically-lifted well production |
| CN1966933A (en) * | 2005-11-17 | 2007-05-23 | 罗阳俊 | Recovery and gathering-transferring technology for thick oil |
| CN101709637A (en) * | 2009-11-17 | 2010-05-19 | 中国海洋石油总公司 | Air lifting device for thermal recovery |
| US20110162832A1 (en) * | 2010-01-06 | 2011-07-07 | Baker Hughes Incorporated | Gas boost pump and crossover in inverted shroud |
-
2012
- 2012-03-09 CN CN201210062050.3A patent/CN103306641B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4454918A (en) * | 1982-08-19 | 1984-06-19 | Shell Oil Company | Thermally stimulating mechanically-lifted well production |
| CN1966933A (en) * | 2005-11-17 | 2007-05-23 | 罗阳俊 | Recovery and gathering-transferring technology for thick oil |
| CN101709637A (en) * | 2009-11-17 | 2010-05-19 | 中国海洋石油总公司 | Air lifting device for thermal recovery |
| US20110162832A1 (en) * | 2010-01-06 | 2011-07-07 | Baker Hughes Incorporated | Gas boost pump and crossover in inverted shroud |
Non-Patent Citations (1)
| Title |
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| 王振松等: "压裂气举快速返排一趟管柱技术", 《吐哈油气》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812510A (en) * | 2015-12-01 | 2017-06-09 | 中国石油天然气股份有限公司 | Tubing string and completion method |
| CN110359875A (en) * | 2018-03-26 | 2019-10-22 | 中国石油天然气股份有限公司 | Extend airlift unit and method |
| CN114562241A (en) * | 2022-03-04 | 2022-05-31 | 中海石油(中国)有限公司 | Bypass continuous pipe gas injection gas lift pipe column system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103306641B (en) | 2015-10-28 |
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