CN202370489U - Parallel double-pipe gas-lift production process pipe column - Google Patents

Parallel double-pipe gas-lift production process pipe column Download PDF

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Publication number
CN202370489U
CN202370489U CN2011203952770U CN201120395277U CN202370489U CN 202370489 U CN202370489 U CN 202370489U CN 2011203952770 U CN2011203952770 U CN 2011203952770U CN 201120395277 U CN201120395277 U CN 201120395277U CN 202370489 U CN202370489 U CN 202370489U
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CN
China
Prior art keywords
oil
pipe
oil pipe
packer
gas
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CN2011203952770U
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Chinese (zh)
Inventor
贾长贵
吴晗
李奎为
吴晓东
薛承瑾
方越
卫然
Original Assignee
中国石油化工股份有限公司
中国石油化工股份有限公司石油工程技术研究院
中国石油大学(北京)
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Priority to CN2011203952770U priority Critical patent/CN202370489U/en
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Publication of CN202370489U publication Critical patent/CN202370489U/en

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Abstract

The utility model provides a parallel double-pipe gas-lift production process pipe column which belongs to the technical field of oil production and mainly comprises a casing, a parallel oil pipes, a gas-lift valve, an upper packer, a lower-portion oil layer packer, a safety valve, a bypass sliding sleeve, a seal pipe, a bottom oil pipe and a sieve pipe. The parallel double-pipe gas-lift production process pipe column is used for simultaneously exploiting a multiple zone where interlayer interference phenomena occur and an oil well having much associated gas, an upper-portion oil layer is exploited through a short oil pipe, a lower-portion oil layer is exploited by a long oil pipe, the yield of the oil well can be remarkably improved, layering exploitation is achieved, gas-lift production is adopted after a flush stage is over, the problem that artificial lift replacement for double-pipe oil production is difficult is solved well, and the parallel double-pipe gas-lift production process pipe column has the advantages of being quick in oil production speed and small in environmental pollution. Though the investment in one time is large, the investment at a later stage is little, and a payback period is short.

Description

A kind of parallel double tube gas-lift production process pipe string
Technical field
The utility model belongs to the Petroleum Production technical field, particularly a kind of parallel double tube gas-lift production process pipe string.
Background technology
When the oil reservoir interlayer contradiction is bigger, interlayer pressure adopts conventional multilayer mixed mining mode the interlayer interference phenomenon may occur not simultaneously, influences the oil well ordinary production.At present, the main method of solution interlayer contradiction is to adopt two-tube layering oil production technology.
Generally the short oil pipe diameter than exploitation top oil reservoir is big for the long oil pipe diameter of exploitation bottom oil reservoir in the existing parallel double tube flow string; The space that occupies the oil jacket annular space is more; And the long oil pipe is with the packer G.I.H; Need first deblocking to discharge packer when playing lower tubular column, construction sequence is complicated, and the underground work difficulty is higher.
Chinese patent 200520126744.4 provides a kind of two-tube injection technology tubing string; As shown in Figure 1, this utility model comprises outer tube, interior pipe, tape channel packer, balance packer, safe injection valve, flushing packer, supporting slip, circulating valve, screen casing and plug.Can carry out layered gas-injection efficiently and accurately.But tubing string is a concentric structure, down-hole construction operation difficulty.
Chinese patent 200620200582.9 provides a kind of oil production by layer down-hole string; As shown in Figure 2, this utility model comprises oil pipe, hollow rod, exploration and transportation separately oil well pump, magnetic paraffin control device, solid antiwax agent pipe, tubing nipple, landing nipple, gives up and can bore separator and sealing intubate.Can oil production by layer, again can layering output, recover the oil but just be used for rod-pumped well.
Chinese patent 200820108248.X provides a kind of gas lift valve, and is as shown in Figure 3, and the gas lift valve of this utility model design is simple in structure, can satisfy the oil gas down-hole of adopting the small casing completion go into the gaslift flow string or with one heart gas lift string carry out gaslift production.
Adopt parallel tubing string to come to exploit respectively different oil reservoirs in the document " Technology of Multi-Tube Production "; Separate with packer between oil reservoir; Can eliminate interlayer interference effectively, increase substantially the flush stage crude output, not take over problem but solve flush stage end back artificial lift.
Document " DUAL TUBING WELL COMPLETION TECHNIQUE " has been introduced the down-hole string structure of dual completion well and the main tool in the tubular column structure, and the problem that possibly occur in the construction has been proposed improved method.
Adopt pressure break gaslift discharge opeing and completion one-trip string mainly to form in the document " multi-functional gaslift completion tubular column " from top to bottom by seven grades of gas lift valves, sliding sleeve, Y511 packer, horn mouth etc.This tubular column structure is simple, and execute-in-place is easy, and one-trip string is realized three functions, and fixed tubular column can direct continuous gas lift production after the pressure break.
Through investigating existing document and patented technology, summed up the limitation of dual tubing oil recovery technology:
Limited by casing diameter, flush stage finishes the back and selects suitable artificial lift to take over comparatively difficulty of mode.
2. it is little to be lowered to behind two oil pipes the gap between the oil jacket in the sleeve pipe, and down-hole construction operation difficulty is big.
3. cost is high, and one-time investment is big.
The utility model content
To defective of the prior art, the utility model provides a kind of parallel double tube gas-lift production process pipe string, and it can improve oil well output significantly.After flowing life finishes, utilize that gas lift valve adopts the gaslift mode to recover the oil on the tubing string, better solved the problem that difficulty is taken in the dual tubing oil recovery artificial lift, can carry out deblocking easily, discharge packer and repair the replace tubes post simultaneously.
The technical scheme that the utility model adopts is:
A kind of parallel double tube gas-lift production process pipe string comprises sleeve pipe 1, oil pipe,
Described oil pipe comprises top oil reservoir oil pipe 12 and bottom oil reservoir oil pipe; Said top oil reservoir oil pipe and bottom oil reservoir oil pipe pass through packer 6 secured in parallel in said sleeve pipe 1;
Said top oil reservoir oil pipe 12 exploitation top oil reservoirs, its length are less than described bottom oil reservoir oil pipe, and said bottom oil reservoir oil pipe is exploited the bottom oil reservoir, and it comprises oil pipe 2 and following oil pipe 10, and the said oil pipe 2 of going up inserts oil pipe 10 interior fixed connections down; Said oil pipe 10 down sets in sleeve pipe 1 through bottom oil reservoir packer 9.Described oil pipe 10 calibers down are greater than last oil pipe 2 calibers.It is described that upward oil pipe 2 is identical with the caliber of top oil reservoir oil pipe 12.
Said top oil reservoir oil pipe 12 is provided with safety valve 3 ' and gas lift valve 5 '; Safety valve 3 ' is all used with top oil reservoir oil pipe 12 with gas lift valve 5 ' and is threaded; Safety valve 3 ' is connected in the top oil reservoir oil pipe 12, and gas lift valve 5 ' is connected the outside of top oil reservoir oil pipe 12.
Following oil pipe 10 in the oil reservoir oil pipe of said bottom is arranged with screen casing 11, and said oil pipe 10 down is installed in the said sleeve pipe 1 after fixing with described bottom oil reservoir packer 9;
Last oil pipe 2 in the oil reservoir oil pipe of said bottom fixedly is inserted into down in the oil pipe 10 through sealed tube 8.
Concrete, the last oil pipe 2 in the oil reservoir oil pipe of described bottom through described packer 6 and described top oil reservoir oil pipe 12 secured in parallel in sleeve pipe 1;
From last safety valve 3 and the gas lift valve 5 of being set with successively, safety valve 3 is all used with oil pipe with gas lift valve 5 and is threaded on the last oil pipe 2, and safety valve 3 is connected in the oil pipe 2, and gas lift valve 5 is connected the outside of oil pipe 2.
Described gas lift valve 5 is in aggregates through thread connection successively by valve body 13, valve assembly 14 and ball-and-seat 15.
In order to be communicated with oil pipe and casing annulus, in the oil reservoir oil pipe of said bottom, also comprise one group of sliding sleeve, said upper sliding sleeve 4 is arranged between safety valve 3 and the packer 6, and upper sliding sleeve 4 is connected in the tubing string.Said low sleeve 7 is arranged between packer 6 and the bottom oil reservoir packer 9, and low sleeve 7 is connected in the tubing string.
In the utility model, described packer 6 passes through hydraulic setting in described sleeve pipe 1;
Described bottom oil reservoir packer 9 sets in described sleeve pipe 1 through cable, the packer of described bottom oil reservoir packer 9 for forever setting.
In concrete, the present invention mainly is made up of sleeve pipe 1, parallel oil pipe, gas lift valve 5, packer 6, bottom oil reservoir packer 9, safety valve 3, bypass sliding sleeve group 4,7, sealed tube 8, following oil pipe 10 and screen casing 11.
In practical implementation, packer 6 tops are two parallel oil pipes, are connected with safety valve 3 ' and gas lift valve 5 ' on its middle and upper part oil reservoir oil pipe 12, the main exploitation top oil reservoir of being responsible for; Last oil pipe 2 is connected with safety valve 3, bypass sliding sleeve 4 and gas lift valve 5 from top to bottom in turn, is the oil flow channel of bottom oil reservoir.The tubing string of exploitation bottom oil reservoir is two cover oil pipes, and following oil pipe 10 is thicker, put into bottom oil reservoir design attitude with screen casing 11 and bottom oil reservoir packer 9 after, accomplish packer setting, will go up oil pipe 2 and sealed tube 8 then and insert down in the oil pipe 10.The gas lift valve 5 of G.I.H is simple in structure, and length and diameter are less, and it is few to take up space, and can satisfy the needs that the double tube gas lift string is produced.
After flowing life finishes, utilize that gas lift valve carries out gas-lift production on the tubing string, solved the problem that difficulty is taken in the dual tubing oil recovery artificial lift preferably, can carry out deblocking easily, discharge packer and repair the replace tubes post simultaneously.
The utility model has following advantage compared with prior art:
1 adopts the artificial lift mode after gaslift finished as flush stage, has better solved the dual tubing oil recovery artificial lift and has taken over difficult problem.
2 protective casing diameter 244.5mm, parallel oil pipe external diameter 73mm, gas lift valve is simple in structure, and it is little to take up space, for the down-hole construction facilitates.
In the oil pipe 10, do not link to each other with bottom oil reservoir packer 9 under oil pipe 2 inserts on 3, repairing does not need deblocking to discharge bottom oil reservoir packer 9 when changing oil pipe 2 tubing strings, simplified construction sequence, has prolonged the application life of packer simultaneously.
The gas injection rate of 4 gas-lift productions has reduced flow chart by the well head Ground Control, reduces operating cost.
The associated gas of extraction can be used as the source of the gas of gas-lift production in 5 manufacturing processes, has not only saved resource but also played the effect of protection environment.
The utility model can overcome the interlayer difference between the multiple zone effectively, can significantly improve oil well output, realizes separate zone production, has solved the dual tubing oil recovery artificial lift preferably and has taken over difficult problem; Expand the gaslift technical applications, simultaneously, possessed the characteristics that rate of oil production is fast, environment pollution is little; Though disposable input is bigger, the later stage small investment, payoff period is short; Economic benefit is obvious, is applicable to overseas oil field, has popularizing application prospect well.
Description of drawings
Fig. 1 is the structural representation of the utility model parallel double tube gas-lift production process pipe string.
Fig. 2 is the structural representation of gas lift valve in the utility model.
Detailed description of main elements:
The 1-sleeve pipe; The last oil pipe of 2-; The 3-safety valve; The last bypass sliding sleeve of 4-; The 5-gas lift valve; 3 '-safety valve; 5 '-gas lift valve; The 6-packer; Bypass sliding sleeve under the 7-; The 8-sealed tube; 9-bottom oil reservoir packer;
Oil pipe under the 10-; The 11-screen casing; 12-top oil reservoir oil pipe; The 13-valve body; 14-valve assembly; The 15-ball-and-seat
The specific embodiment
As shown in Figure 1, the utility model by sleeve pipe 1, go up oil pipe 2, safety valve 3, go up bypass sliding sleeve 4, gas lift valve 5, packer 6, down bypass sliding sleeve 7, sealed tube 8, bottom oil reservoir packer 9, oil pipe 10, screen casing 11, top oil reservoir oil pipe 12 are formed down.Packer is two cover oil pipes more than 6, and last oil pipe 2 is the oil flow channel of lower floor with following oil pipe 10, and top oil reservoir oil pipe 12 is unsettled in well, mainly exploits the top oil reservoir.
Generally the short oil pipe diameter than exploitation top oil reservoir is big for the long oil pipe diameter of exploitation bottom oil reservoir in the existing parallel double tube flow string; The space that occupies the oil jacket annular space is more; And the long oil pipe is with the packer G.I.H; Need first deblocking to discharge packer when playing lower tubular column, construction sequence is complicated, and the underground work difficulty is higher.This is novel will play oil pipe 10, screen casing 11 and bottom oil reservoir packer 9 to transfer to bottom oil reservoir design attitude after; Accomplish packer setting, in the oil pipe 10, it is the same with exploitation top oil reservoir oil pipe 12 diameters wherein to go up oil pipe 2 under inserting last oil pipe 2 and sealed tube 8 then; So just increased the annular space space between the oil jacket; Because down oil pipe 10 and bottom oil reservoir packer 9 G.I.H together, be to insert in the oil pipe 10 down and go up oil pipe 2, do not link to each other with bottom oil reservoir packer 9; Such design makes to repair and need not discharge bottom oil reservoir packer 9 when changing oil pipe 2; Simplify the construction sequence of a lower tubular column, reduced the difficulty of underground work, also prolonged the application life of packer simultaneously.The permanent packer that bottom oil reservoir packer 9 sets for cable, advantage are that the fashionable logger school that can utilize is dark down, and the setting position is accurate; Sealed tube 8 plays the effect that annular space between oil pipe 2 and the following oil pipe 10 is gone up in sealing.Safety valve 3 and last bypass sliding sleeve 4 are equipped with in last oil pipe 2 tops, and the switch of storm valve 3 is by Ground Control, and valve is opened when ground provides rated pressure, and valve cuts out (cutting out oil well) when releasing pressure.
Top oil reservoir oil pipe 12 is exploited the top oil reservoir, and top oil reservoir oil pipe 12 is lowered to top oil reservoir design attitude, is lowered to packer 6 in the annular space between oil pipe and the oil jacket.Packer 6 is the recoverable production packer of hydraulic setting, can pressurize in the oil reservoir oil pipe 12 to accomplish from top to set.
The gas lift valve 5 of G.I.H is made up of valve body 13, valve assembly 14, ball-and-seat 15, and is in aggregates through thread connection successively.This gas lift valve is simple in structure, and length and diameter are all little than conventional gas lift valve, and it is few to take up space, and can satisfy the needs that the double tube gas lift string is produced.

Claims (8)

1. a parallel double tube gas-lift production process pipe string comprises sleeve pipe (1), oil pipe, it is characterized in that:
Described oil pipe comprises top oil reservoir oil pipe (12) and bottom oil reservoir oil pipe; Said top oil reservoir oil pipe and bottom oil reservoir oil pipe pass through packer (6) secured in parallel in said sleeve pipe (1);
Said top oil reservoir oil pipe (12) exploitation top oil reservoir, its length is less than described bottom oil reservoir oil pipe, and said bottom oil reservoir oil pipe is exploited the bottom oil reservoir, and it comprises oil pipe (2) and following oil pipe (10), fixed connection in the oil pipe (10) under the insertion of said upward oil pipe (2); Said oil pipe (10) down sets in sleeve pipe (1) through bottom oil reservoir packer (9).
2. a kind of parallel double tube gas-lift production process pipe string according to claim 1 is characterized in that:
Said top oil reservoir oil pipe (12) is provided with safety valve (3 ') and gas lift valve (5 '); Safety valve (3 ') and gas lift valve (5 ') are all used with top oil reservoir oil pipe (12) and are threaded; Safety valve (3 ') is connected in the said top oil reservoir oil pipe (12), and gas lift valve (5 ') is connected the outside of top oil reservoir oil pipe (12);
Following oil pipe (10) in the oil reservoir oil pipe of said bottom is arranged with screen casing (11), and said oil pipe (10) down is installed in the said sleeve pipe (1) after fixing with described bottom oil reservoir packer (9);
Last oil pipe (2) in the oil reservoir oil pipe of said bottom fixedly is inserted into down in the oil pipe (10) through sealed tube (8).
3. a kind of parallel double tube gas-lift production process pipe string according to claim 1 and 2 is characterized in that:
Last oil pipe (2) in the oil reservoir oil pipe of described bottom through described packer (6) and described top oil reservoir oil pipe (12) secured in parallel in sleeve pipe (1);
Last oil pipe (2) is gone up from last safety valve (3) and the gas lift valve (5) of being set with successively, and safety valve (3) and gas lift valve (5) are all used with oil pipe and be threaded, and safety valve (3) is connected in the oil pipe, and gas lift valve (5) is connected the outside of oil pipe.
4. a kind of parallel double tube gas-lift production process pipe string according to claim 1 and 2 is characterized in that:
In the oil reservoir oil pipe of said bottom, also comprise one group of sliding sleeve, said upper sliding sleeve (4) is arranged between safety valve (3) and the packer (6), and upper sliding sleeve (4) is connected in the tubing string; Said low sleeve (7) is arranged between said packer (6) and the bottom oil reservoir packer (9), and low sleeve (7) is connected in the tubing string.
5. a kind of parallel double tube gas-lift production process pipe string according to claim 1 is characterized in that:
Described packer (6) passes through hydraulic setting in described sleeve pipe (1);
Described bottom oil reservoir packer (9) sets in described sleeve pipe (1) through cable, the packer of described bottom oil reservoir packer (9) for forever setting.
6. a kind of parallel double tube gas-lift production process pipe string according to claim 3 is characterized in that:
Described gas lift valve (5) is in aggregates through thread connection successively by valve body (13), valve assembly (14) and ball-and-seat (15).
7. a kind of parallel double tube gas-lift production process pipe string according to claim 1 and 2 is characterized in that: described oil pipe (10) caliber down is greater than last oil pipe (2) caliber.
8. a kind of parallel double tube gas-lift production process pipe string according to claim 1 and 2 is characterized in that: described upward oil pipe (2) is identical with the caliber of top oil reservoir oil pipe (12).
CN2011203952770U 2011-10-17 2011-10-17 Parallel double-pipe gas-lift production process pipe column CN202370489U (en)

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Application Number Priority Date Filing Date Title
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104632195A (en) * 2013-11-08 2015-05-20 中国石油天然气股份有限公司 Gas lift flow assistance horizontal well water exploration pipe column and method
CN104879097A (en) * 2015-06-12 2015-09-02 中国海洋石油总公司 Gas well production string provided with double parallel pipes
CN104895535A (en) * 2015-05-12 2015-09-09 中国石油天然气股份有限公司 Buried hill oil pool branch well gas cap energy replenishment process string
CN104989325A (en) * 2015-06-12 2015-10-21 中国海洋石油总公司 Method for producing gas by using production pipe column of parallel double-pipe gas well
CN108119103A (en) * 2018-01-12 2018-06-05 刘玉友 A kind of oil/gas well is without pump quarrying apparatus and method
CN108729884A (en) * 2017-04-20 2018-11-02 中国石油天然气股份有限公司 A kind of extracting device of oil and its application
CN110107230A (en) * 2019-05-17 2019-08-09 张强 The layering gas recovery device of the double-deck tubing string
CN110242260A (en) * 2019-05-17 2019-09-17 张强 The application method of the layering gas recovery device of the double-deck tubing string

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104632195A (en) * 2013-11-08 2015-05-20 中国石油天然气股份有限公司 Gas lift flow assistance horizontal well water exploration pipe column and method
CN104632195B (en) * 2013-11-08 2017-12-19 中国石油天然气股份有限公司 A kind of gaslift helps flowing water horizontal well searching pipe column and method
CN104895535A (en) * 2015-05-12 2015-09-09 中国石油天然气股份有限公司 Buried hill oil pool branch well gas cap energy replenishment process string
CN104895535B (en) * 2015-05-12 2017-07-07 中国石油天然气股份有限公司 Buried hill oil pool Multilateral Wells pneumatic jack complementary energy process pipe string
CN104879097A (en) * 2015-06-12 2015-09-02 中国海洋石油总公司 Gas well production string provided with double parallel pipes
CN104989325A (en) * 2015-06-12 2015-10-21 中国海洋石油总公司 Method for producing gas by using production pipe column of parallel double-pipe gas well
CN104989325B (en) * 2015-06-12 2017-10-13 中国海洋石油总公司 A kind of method using two-tube gas well liquid loading tubing string gas production arranged side by side
CN108729884A (en) * 2017-04-20 2018-11-02 中国石油天然气股份有限公司 A kind of extracting device of oil and its application
CN108119103A (en) * 2018-01-12 2018-06-05 刘玉友 A kind of oil/gas well is without pump quarrying apparatus and method
CN110107230A (en) * 2019-05-17 2019-08-09 张强 The layering gas recovery device of the double-deck tubing string
CN110242260A (en) * 2019-05-17 2019-09-17 张强 The application method of the layering gas recovery device of the double-deck tubing string

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