CN204782945U - Double -barrelled oil production pipe of sleeve pipe absorption well - Google Patents
Double -barrelled oil production pipe of sleeve pipe absorption well Download PDFInfo
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- CN204782945U CN204782945U CN201520475728.XU CN201520475728U CN204782945U CN 204782945 U CN204782945 U CN 204782945U CN 201520475728 U CN201520475728 U CN 201520475728U CN 204782945 U CN204782945 U CN 204782945U
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- tubing
- oil
- pipe
- oil pipe
- well
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Abstract
The utility model discloses a double -barrelled oil production pipe of sleeve pipe absorption well can be arranged in partial long well section, contain high -pressure water layer, the sleeve pipe absorption well of leak source imbedibility utmost point subalternation problem. Double -barrelled oil production pipe of sleeve pipe absorption well includes oil pipe and oil -well pump, the packer seat seal between oil pipe and the sleeve pipe, lie in the oil reservoir top below the sleeve pipe leak source, go into minor diameter oil pipe and minor diameter tubular pump among the oil pipe down, oil pipe is through descending the oil pipe head to hang at the well head, minor diameter oil pipe is connected with the pump barrel of minor diameter tubular pump and hangs at the well head through last oil pipe head. The utility model discloses the working property is reliable, and the improvement mode is simple, and the input cost is low, and the term of validityexpiry date is grown, is difficult for causing the overhaul operation, can solve random lengths's cover hourglass problem. Can resume the output of most sleeve pipe absorption well, economic benefits is showing, has fine using value.
Description
Technical field
The utility model is the down-hole oil production tubing string of petroleum industry producing well, particularly casing leakage well dual tubing oil recovery tubing string.The utility model may be used for, in part long well section, casing leakage well containing problems such as high pressure water layer, leak source imbedibility extreme differences, making to recover in the manufacturing process of above-mentioned oil well after completion oil well output, slows down oil well comprehensive water cut and rises.
Background technology
The oil-gas field development middle and later periods, the cover caused by a variety of causes damages, cover leakage situation is on the rise, and causes well water to increase, production decline, the sustainable and stable development of serious restriction old filed.Overlapping in damage, cover blind hole about having half is according to statistics pumpingh well, and annual all in increase.
The technology that current routine administers cover damage, cover leaks or means have following several:
1, packer band tubing string card leaks technique: simple to operate, expense is low, but period of validity is short, and leak source shakes out, and easily causes overhaul, carries on as before and adopts former well oil pipe to recover the oil, because card leaks, and cannot well-flushing, survey liquid level;
2, casing salvaging: be not suitable with long well section and to the operation that should have water under high pressure layer, costly, again repair difficulty after inefficacy;
3, small casing well cementation: period of validity is long, but duty cycle is long, costly, well depth not easily cements the well, and cover repairs difficulty after breaking again again;
4, cement leak-stopping technique: operation pressure is higher sometimes, cement paste is difficult to clamp-on target zone continuously, easily causes overhaul; Leak source imbedibility extreme difference, Yue ≤0.1m
3/ min, conventional blocking agent cannot clamp-on leak source position.
Leak in governance process for above the difficult point occurred at cover, conventional means cannot meet improvement requirement, therefore, develop a kind of simple to operate, expense is low, period of validity is long, not easily turn the leakage of the improvement of overhaul cover, the flow string of casing damaged well is very necessary.
Summary of the invention
The purpose of this utility model overcomes the difficult point that conventional means administers cover blind hole, casing leakage well dual tubing oil recovery tubing string is provided, recover the oil in casing leakage well, can be widely used in casing diameter variable little, damage without the cover of bad break, overlap in blind hole, solve casing leakage to producing the difficulty brought, recover the production of cover blind hole, increase economic efficiency.
Technical solution of the present utility model is:
Casing leakage well dual tubing oil recovery tubing string comprises oil pipe and oil well pump, packer set is between oil pipe and sleeve pipe, above the oil reservoir that is positioned at below sleeve pipe leak source, minor diameter tubing and minor diameter tubing pump is entered under in oil pipe, oil pipe is suspended on well head by lower tubing head, and minor diameter tubing is connected with the pump barrel of minor diameter tubing pump and is suspended on well head by upper tubing head.
Casing leakage well dual tubing oil recovery tubing string comprises oil pipe and oil well pump, packer set is between oil pipe and sleeve pipe, above the oil reservoir that is positioned at below sleeve pipe leak source, hollow rod and rod-type pumping unit is entered under in oil pipe, the support set of rod-type pumping unit is fixed on oil pipe, and hollow rod is as fluid course.
The utility model has following significant effect: the utility model adopts the dual tubing oil recovery tubing string of oil pipe and minor diameter tubing or oil pipe and hollow rod formation, utilize minor diameter tubing or hollow rod as fluid course, effectively administer the little long well section without bad break of casing diameter variable, damage containing the cover of the problems such as high pressure water layer, leak source imbedibility extreme difference, overlap blind hole.Embodiment one of the present utility model, is suspended on well head by oil pipe by lower tubing head, and minor diameter tubing is connected with the pump barrel of minor diameter tubing pump and is suspended on well head by upper tubing head.Can realize the operation of well-flushing and survey liquid level, packer no longer lost efficacy by the impact of fluctuating load, and card envelope is effective, period of validity is longer.Enter in oil pipe under embodiment two of the present utility model adopts hollow rod, its construction is simple, and input cost is low.If proposed by hollow rod, also clean-out service can be implemented.The support set of rod-type pumping unit can also be fixed on the oil pipe below packer, if support set is fixed on the below of packer, uses period of validity longer, the better effects if that cutting ferrule leaks, even if the oil pipe leakage above packer, also can recover the oil.Utility model works dependable performance, administration way is simple, and input cost is low, and period of validity is grown, not easily caused heavy repair task, and the cover that can solve random length leaks problem.Most of casing leakage well yield can be recovered, remarkable in economical benefits, there is good application value.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment one.
Fig. 2 is the structural representation of the utility model embodiment two.
Detailed description of the invention
Below in conjunction with accompanying drawing in detail the utility model is described in detail, and unrestricted protection domain of the present utility model, the improvement that all uses mentality of designing of the present utility model draws all belongs to protection category of the present utility model.
Embodiment one
See Fig. 1, casing leakage well dual tubing oil recovery tubing string comprises oil pipe 2, packer 5 is setting between oil pipe 2 and sleeve pipe 1, above the oil reservoir that is positioned at below sleeve pipe leak source, enter minor diameter tubing 4 and minor diameter tubing pump 3 under in oil pipe 2, oil pipe 2 is suspended on well head by lower tubing head 7
,minor diameter tubing 4 is connected with the pump barrel of minor diameter tubing pump 3 and is suspended on well head by upper tubing head 6, and can realize the operation of well-flushing and survey liquid level, packer 5 no longer lost efficacy by the impact of fluctuating load, and card envelope is effective, period of validity is long.The interior latus rectum of lower tubing head 7 is greater than the interior latus rectum of tubing head 6, and upper tubing head 6 is threaded with lower tubing head 7.The diameter of oil pipe 2 is 89mm; The diameter of minor diameter tubing 4 is 60.3mm.The maximum outside diameter of the tubing coupling of minor diameter tubing 4 is 70mm, and the two ends of these tubing coupling two ends and minor diameter tubing pump 3 are equipped with 45 ° of chamferings.
Embodiment two
See Fig. 2, casing leakage well dual tubing oil recovery tubing string comprises oil pipe 2, packer 5 is setting between oil pipe 2 and sleeve pipe 1, above the oil reservoir that is positioned at below sleeve pipe leak source, enter hollow rod 8 and rod-type pumping unit 9 under in oil pipe 2, the support set of rod-type pumping unit 9 is fixed on oil pipe 2.The support set of rod-type pumping unit 9 can also be fixed on the oil pipe 2 below packer 5, if support set is fixed on the below of packer 5, uses period of validity longer, the better effects if that cutting ferrule leaks, even if the oil pipe 2 above packer 5 is missed, also can recover the oil.The diameter of hollow rod 8 is 36mm; The diameter of oil pipe 2 is 89mm, and hollow rod 8 is as fluid course.
Claims (7)
1. casing leakage well dual tubing oil recovery tubing string, comprise oil pipe, it is characterized in that, packer set is between oil pipe and sleeve pipe, above the oil reservoir that is positioned at below sleeve pipe leak source, minor diameter tubing and minor diameter tubing pump is entered under in oil pipe, oil pipe is suspended on well head by lower tubing head, and minor diameter tubing is connected with the pump barrel of minor diameter tubing pump and is suspended on well head by upper tubing head.
2. casing leakage well dual tubing oil recovery tubing string according to claim 1, is characterized in that, the interior latus rectum of described lower tubing head is greater than the interior latus rectum of tubing head, and upper tubing head is threaded with lower tubing head.
3. casing leakage well dual tubing oil recovery tubing string according to claim 1, it is characterized in that, the diameter of described oil pipe is 89mm; The diameter of minor diameter tubing 4 is 60.3mm.
4. casing leakage well dual tubing oil recovery tubing string according to claim 3, it is characterized in that, the maximum outside diameter of the tubing coupling of described minor diameter tubing is 70mm, and the two ends of these tubing coupling two ends and minor diameter tubing pump are equipped with 45 ° of chamferings.
5. casing leakage well dual tubing oil recovery tubing string, comprise oil pipe, it is characterized in that, packer set is between oil pipe and sleeve pipe, above the oil reservoir that is positioned at below sleeve pipe leak source, enter hollow rod and rod-type pumping unit under in oil pipe, the support set of rod-type pumping unit is fixed on oil pipe.
6. casing leakage well dual tubing oil recovery tubing string according to claim 5, it is characterized in that, the support set of described rod-type pumping unit can also be fixed on the oil pipe below packer.
7. casing leakage well dual tubing oil recovery tubing string according to claim 5, it is characterized in that, the diameter of described hollow rod is 36mm; The diameter of oil pipe is 89mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520475728.XU CN204782945U (en) | 2015-07-06 | 2015-07-06 | Double -barrelled oil production pipe of sleeve pipe absorption well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520475728.XU CN204782945U (en) | 2015-07-06 | 2015-07-06 | Double -barrelled oil production pipe of sleeve pipe absorption well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204782945U true CN204782945U (en) | 2015-11-18 |
Family
ID=54523013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520475728.XU Expired - Fee Related CN204782945U (en) | 2015-07-06 | 2015-07-06 | Double -barrelled oil production pipe of sleeve pipe absorption well |
Country Status (1)
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| CN (1) | CN204782945U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104975824A (en) * | 2015-07-06 | 2015-10-14 | 中国石油化工股份有限公司 | Oil recovery method for casing leaked well and dual-tubing oil recovery string adopted therein |
| CN112282718A (en) * | 2020-11-05 | 2021-01-29 | 中国石油天然气股份有限公司 | Combined pipe string for sidetracking well and slim hole well and use method |
| CN112943169A (en) * | 2019-11-26 | 2021-06-11 | 中国石油天然气股份有限公司 | Positive circulation gas injection, drainage and gas production system for small-diameter oil pipe |
-
2015
- 2015-07-06 CN CN201520475728.XU patent/CN204782945U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104975824A (en) * | 2015-07-06 | 2015-10-14 | 中国石油化工股份有限公司 | Oil recovery method for casing leaked well and dual-tubing oil recovery string adopted therein |
| CN112943169A (en) * | 2019-11-26 | 2021-06-11 | 中国石油天然气股份有限公司 | Positive circulation gas injection, drainage and gas production system for small-diameter oil pipe |
| CN112943169B (en) * | 2019-11-26 | 2022-12-02 | 中国石油天然气股份有限公司 | Positive circulation gas injection, drainage and gas production system for small-diameter oil pipe |
| CN112282718A (en) * | 2020-11-05 | 2021-01-29 | 中国石油天然气股份有限公司 | Combined pipe string for sidetracking well and slim hole well and use method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20180706 |