CN102852467A - Layered oil production process tubular column for protecting oil layer - Google Patents
Layered oil production process tubular column for protecting oil layer Download PDFInfo
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- CN102852467A CN102852467A CN2011101803475A CN201110180347A CN102852467A CN 102852467 A CN102852467 A CN 102852467A CN 2011101803475 A CN2011101803475 A CN 2011101803475A CN 201110180347 A CN201110180347 A CN 201110180347A CN 102852467 A CN102852467 A CN 102852467A
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- oil
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- pipe string
- reservoir
- oil layer
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 230000001012 protector Effects 0.000 claims abstract description 28
- 238000005086 pumping Methods 0.000 claims abstract description 24
- 238000012360 testing method Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 7
- 239000012530 fluid Substances 0.000 abstract description 15
- 239000003129 oil well Substances 0.000 abstract description 10
- 238000001514 detection method Methods 0.000 abstract description 7
- 238000011010 flushing procedure Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 5
- 230000001681 protective effect Effects 0.000 abstract 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 62
- 239000010410 layer Substances 0.000 description 19
- 238000005516 engineering process Methods 0.000 description 5
- 239000010779 crude oil Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- XQCFHQBGMWUEMY-ZPUQHVIOSA-N Nitrovin Chemical compound C=1C=C([N+]([O-])=O)OC=1\C=C\C(=NNC(=N)N)\C=C\C1=CC=C([N+]([O-])=O)O1 XQCFHQBGMWUEMY-ZPUQHVIOSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The invention relates to a protective oil layer layered oil production process tubular column which consists of an oil pumping tubular column and a protective oil layer releasing tubular column. The protection oil layer releasing pipe column is formed by fixedly connecting a plug (4), an oil layer protector (9), a safety joint (8), a Y341 self-seal-testing packer (10), a Y441 type packer (6) and a releasing head (5) from bottom to top in sequence, and an oil pumping pipe column switch (11) is inserted into the protection oil layer releasing pipe column oil layer protector (9), can open any production layer and has the characteristics of convenience and accuracy in opening or closing. The tubular column has simple, reasonable, convenient and practical structural design; the well flushing device can not only seal the stratum during pump detection operation, realize non-killing operation during pump detection, prevent flushing fluid or killing fluid from entering the oil layer to pollute the oil layer, protect the oil-gas layer, improve the production efficiency, prolong the effective production period of the oil layer, but also close or open any oil layer during oil well production, and realize the layer-changing exploitation of the oil well immovable blocking layer releasing pipe column.
Description
Technical field
The present invention relates to a kind of oilfield and produce the layered oil extraction process tubular column, especially relate to a kind of separate zone oil production process pipe string for Fluid at Poor Oil Well pump detection and workover process protection oil reservoir.
Background technology
At present, the most of old blocks in oil field and part block stratum energy newly developed is low, after the kill job, and the well killing fluid polluted reservoir, the oil well restore cycle is long, and the oil well productivity after the recovery can significantly reduce, and directly affects oil well output.
For the oil layer protection in the operation, at present most chemical methodes that adopt realize by the performance of improving well killing fluid, but high because of price, cost is large, also have certain difficulty promoting.
Along with oil field development is goed deep into, the stratum operating mode becomes increasingly complex, and straticulate exploration is many, and interlayer difference is large, and interlayer contradiction is outstanding, closes to adopt and can not satisfy Production requirement, and mechanical separate zone production has become the most effective means of potentiality between tap layer.For now; the oil field has formed multiple routine and has divided the excavating technology tubing string; divide such as: sands-proof check adopt the production technology tubing string, multilayer looks for Ka Shui once to finish tubing string etc.; but all minute excavating technology tubing strings all lack the function of protecting oil reservoir; examine aborning or frequently in the pump measure; flushing fluid or well killing fluid enter the stratum, caused the part oil reservoir contaminated, stop up.
Summary of the invention
In order to solve the problem that to protect oil reservoir on the above-mentioned mechanical oil production by layer flow string basis, the invention provides a kind of protection oil reservoir oil production by layer production technology tubing string, can either when pump detection and workover, seal the stratum, realize the snubbing serving in the inspection pump process, avoid flushing fluid or well killing fluid to enter the oil layer pollution oil reservoir, the protection oil reservoir improves production time efficiency, reduce cost, prolong oil reservoir effective campaign; Can when oil well production, close or open arbitrary oil reservoir again, realize that the motionless card layer of oil well Back-off Pipe String changes layer exploitation.Tubular column structure simplicity of design, reasonable, convenient, practical is the process pipe string of the most ripe, state-of-the-art at present domestic employing mechanical system protection oil reservoir oil production by layer.
The present invention adopts following technical proposals: protection oil reservoir separate zone oil production process pipe string is comprised of pumping pipe string and protection oil reservoir Back-off Pipe String, and pumping pipe string is fixedly connected sequentially and is formed by derailing switch 11, core pipe 7, plug 4, screen casing 3, anti-jetting oil pump 2, tubing string 1; Protection oil reservoir Back-off Pipe String is fixedly connected sequentially and is formed by plug 4, reservoir protector 9, safety joint 8, Y341 self-test sealing packer 10, Y441 type packer 6, back-off sub 5; wherein, pumping pipe string derailing switch 11 is inserted in the protection oil reservoir Back-off Pipe String reservoir protector 9.
Described protection oil reservoir Back-off Pipe String can be installed 2 and be embedded with reservoir protector 9.All reservoir protectors 9 all are in closed condition in removing the pumping pipe string process.Described pumping pipe string is in closed state in removing process.
The invention has the beneficial effects as follows, tubular column structure is reasonable in design, practical, can satisfy the requirement that oil well delamination recovers the oil, oil reservoir is not contaminated in the time of guaranteeing again the oil well pump detection and workover or change layer to produce, specifically: tubing string is for each section oil reservoir corresponding configuration reservoir protector all, protector can be closed during pump detection and workover, without the kill-job construction, reaches the non-staining purpose of oil reservoir; Change as required layer during production, the protector that can open random layer reaches and changes the purpose that layer is produced; The string matching safety joint, easy to use, safe and reliable, be the tubing string condition that facilitates smoothly; String matching Y341 self-test sealing packer has realized that multiple-string packer sets the function of posteriority envelope; Reservoir protector is that mechanical type is opened, closed and reach the purpose of changing layer, with controlling hydraulic layer changing switch relatively, have unlatchings, close convenience, accurately, characteristics intuitively.
Description of drawings
Fig. 1 is that the present invention protects oil reservoir separate zone oil production process pipe string structural representation.
Fig. 2 is protection oil reservoir Back-off Pipe String structural representation
Fig. 3 is the pumping pipe string structural representation
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing:
The present invention protects the oil reservoir separate zone oil production process pipe string to be comprised of pumping pipe string and protection oil reservoir Back-off Pipe String, and pumping pipe string is fixedly connected sequentially and is formed by derailing switch 11, core pipe 7, plug 4, screen casing 3, anti-jetting oil pump 2, tubing string 1; Protection oil reservoir Back-off Pipe String is fixedly connected sequentially and is formed by plug 4, reservoir protector 9, safety joint 8, Y341 self-test sealing packer 10, Y441 type packer 6, back-off sub 5; wherein; pumping pipe string derailing switch 11 is inserted in the protection oil reservoir Back-off Pipe String reservoir protector 9; open the feed pathway of reservoir protector 9; crude oil enters pit shaft, satisfies need of production.
Described protection oil reservoir Back-off Pipe String can be installed 2 and be embedded with reservoir protector 9.All reservoir protectors 9 all are in closed condition in removing the pumping pipe string process.The crude oil of all oil reservoirs all can not enter pit shaft, and flushing fluid or well killing fluid can not enter oil reservoir, prevent polluted reservoir, in the situation that not kill-job, the accident of well kick or blowout can not occur also.Described pumping pipe string is in closed state in removing process, prevent that the crude oil in the pit shaft enters the pumping pipe string inner chamber when actuating oil-pumping unit and flow string, prevents that liquid overflows in pipe is annotated in the pit shaft.
Practical function of the present invention comprises following process: composition member plug 4, reservoir protector 9, safety joint 8, Y341 self-test sealing packer 10, Y441 type packer 6, back-off sub 5 and the oil pipe 1 of protection oil reservoir Back-off Pipe String are lowered to the pit shaft precalculated position successively by design from bottom to top, beat hydraulic pressure Y341 self-test sealing packer 9, Y441 packer 6 sets, packing element is attached on the casing wall, be sealed in oil sets annular space, oil reservoir is separated into some intervals; Simultaneously Y441 packer 6 slips open and are stuck on the casing wall, continue to suppress to improve pressure back-off sub 5 control pins and cut off again, and realize giving up, and the tubing string 5 or more of proposing to give up protects the oil reservoir Back-off Pipe String to be suspended on the sleeve pipe.
The composition member derailing switch 11 of pumping pipe string, core pipe 7, plug 4, screen casing 3, anti-jetting oil pump 2, oil pipe are lowered in the pit shaft successively by design from bottom to top.Derailing switch 11, core pipe 7 inserts in the protection oil reservoir Back-off Pipe Strings, opens the reservoir protector 9 of producing zone position and produces, and anti-jetting oil pump 2 takes formation fluid to ground.
During production, only have one deck reservoir protector 9 to be in opening, formation fluid enters in the tubing string through reservoir protector 9, is brought to ground by anti-jetting oil pump 2; The reservoir protector 9 of remainder layer is in closed condition.During pump detection and workover, derailing switch 11 cuts out producing zone reservoir protector 9, and all reservoir protectors are in closed condition, and flushing fluid or well killing fluid can not enter the oil layer pollution oil reservoir, effectively protects oil reservoir.In the time of need to changing layer, propose pumping pipe string, primary payzone reservoir protector is closed, and is lowered to the reservoir protector 9 that pumping pipe string is opened another layer again, need not move protection oil reservoir Back-off Pipe String, realizes changing layer production.
If when needing to change protection oil reservoir Back-off Pipe String, propose first pumping pipe string, be lowered to again fishing string, if deblocking is smooth, pull protection oil reservoir Back-off Pipe String out; If tubing string is by the sand card, the solution sealing pipe column is carried motionless, proposes just tubing string disconnects from safety joint 8.Then, take again other measure, pull protection oil reservoir Back-off Pipe String out.
Claims (4)
1. protect the oil reservoir separate zone oil production process pipe string for one kind, be comprised of pumping pipe string and protection oil reservoir Back-off Pipe String, described pumping pipe string is fixedly connected sequentially and is formed by derailing switch (11), core pipe (7), plug (4), screen casing (3), anti-jetting oil pump (2), tubing string (1); Described protection oil reservoir Back-off Pipe String is fixedly connected sequentially and is formed by plug (4), reservoir protector (9), safety joint (8), Y341 self-test sealing packer (10), Y441 type packer (6), back-off sub (5); It is characterized in that: described pumping pipe string derailing switch (11) is inserted in the described protection oil reservoir Back-off Pipe String reservoir protector (9).
2. protection oil reservoir separate zone oil production process pipe string according to claim 1, it is characterized in that: described protection oil reservoir Back-off Pipe String can be installed 2 and be embedded with reservoir protector (9).
3. protection oil reservoir separate zone oil production process pipe string according to claim 2, it is characterized in that: described all reservoir protectors (9) all are in closed condition in removing described pumping pipe string process.
4. protection oil reservoir separate zone oil production process pipe string according to claim 1, it is characterized in that: described pumping pipe string is in closed state in removing process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101803475A CN102852467A (en) | 2011-06-30 | 2011-06-30 | Layered oil production process tubular column for protecting oil layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101803475A CN102852467A (en) | 2011-06-30 | 2011-06-30 | Layered oil production process tubular column for protecting oil layer |
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| Publication Number | Publication Date |
|---|---|
| CN102852467A true CN102852467A (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101803475A Pending CN102852467A (en) | 2011-06-30 | 2011-06-30 | Layered oil production process tubular column for protecting oil layer |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775021A (en) * | 2014-01-09 | 2014-05-07 | 中国石油天然气股份有限公司 | Water plugging pipe column suitable for small interlayer bottom plugging well and water plugging method |
| CN105370239A (en) * | 2014-08-26 | 2016-03-02 | 天津大港油田钻采技术开发公司 | Hydraulic-set separate-layer simultaneous-extraction string |
| CN105484712A (en) * | 2014-09-18 | 2016-04-13 | 中国石油天然气股份有限公司 | Toothbrush-shaped oil reservoir layered mining method |
| CN106014379A (en) * | 2016-07-27 | 2016-10-12 | 大港油田集团有限责任公司 | Layered simultaneous production testing string |
| CN104420858B (en) * | 2013-08-23 | 2017-10-24 | 天津大港油田钻采技术开发公司 | Hierarchical process tubing string |
| CN109025919A (en) * | 2018-10-26 | 2018-12-18 | 中国石油化工股份有限公司 | The recovery method of the dynamic layer recovery ratio of raising oil reservoir time and secondary dynamic layer flow string |
| CN112824641A (en) * | 2019-11-21 | 2021-05-21 | 中国石油天然气股份有限公司 | Integrated oil production process pipe column |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104420858B (en) * | 2013-08-23 | 2017-10-24 | 天津大港油田钻采技术开发公司 | Hierarchical process tubing string |
| CN103775021A (en) * | 2014-01-09 | 2014-05-07 | 中国石油天然气股份有限公司 | Water plugging pipe column suitable for small interlayer bottom plugging well and water plugging method |
| CN105370239A (en) * | 2014-08-26 | 2016-03-02 | 天津大港油田钻采技术开发公司 | Hydraulic-set separate-layer simultaneous-extraction string |
| CN105484712A (en) * | 2014-09-18 | 2016-04-13 | 中国石油天然气股份有限公司 | Toothbrush-shaped oil reservoir layered mining method |
| CN105484712B (en) * | 2014-09-18 | 2018-06-01 | 中国石油天然气股份有限公司 | Toothbrush-shaped oil reservoir layered mining method |
| CN106014379A (en) * | 2016-07-27 | 2016-10-12 | 大港油田集团有限责任公司 | Layered simultaneous production testing string |
| CN109025919A (en) * | 2018-10-26 | 2018-12-18 | 中国石油化工股份有限公司 | The recovery method of the dynamic layer recovery ratio of raising oil reservoir time and secondary dynamic layer flow string |
| CN109025919B (en) * | 2018-10-26 | 2023-12-19 | 中国石油化工股份有限公司 | Exploitation method for improving oil reservoir secondary dynamic layer recovery ratio and secondary dynamic layer oil production pipe column |
| CN112824641A (en) * | 2019-11-21 | 2021-05-21 | 中国石油天然气股份有限公司 | Integrated oil production process pipe column |
| CN112824641B (en) * | 2019-11-21 | 2023-02-07 | 中国石油天然气股份有限公司 | Integrated oil production process pipe column |
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Application publication date: 20130102 |