CN103790523A - Technique string for offshore oil production - Google Patents
Technique string for offshore oil production Download PDFInfo
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- CN103790523A CN103790523A CN201210432831.7A CN201210432831A CN103790523A CN 103790523 A CN103790523 A CN 103790523A CN 201210432831 A CN201210432831 A CN 201210432831A CN 103790523 A CN103790523 A CN 103790523A
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- electric submersible
- submersible pump
- pipe
- oil
- string
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Abstract
The invention provides a technique string for offshore oil production. The technique string comprises a string assembly and an electric submersible pump assembly which is disposed in the string assembly. The string assembly comprises an oil pipe sleeved inside a casing, and a non-well-killing switch is arranged at the front end of the oil pipe; the electric submersible pump assembly comprises an electric submersible pump and a non-well-killing-switch operating rod which is disposed at the front end of the electric submersible pump, the electric submersible pump is disposed inside the oil pump, and the non-well-killing-switch operating rod is located above the non-well-killing switch. When pump inspection work of an oil well is needed, the electric submersible pump can be released without well killing, a work platform is omitted, working hours are shortened, and oil pollution can be reduced.
Description
Technical field
The present invention relates to petroleum industry offshore oil production, specifically a kind of process pipe string for offshore oil production.
Background technology
Marine electric submersible pumping well need to pour into well killing fluid with equilibrium strata pressure in the time carrying out pump detection and workover in well, has prevented from occurring in pump process well liquid excessive, and this process can pollute subsurface reservoir, affects stratum production fluid.On general production platform, a large amount of well heads are concentrated and are laid, narrow space, and job platform is settled difficulty, causes marine electric submersible pumping well pump detection and workover difficulty, and easily affects oil well productivity.The present invention, take the not killing prevention switch that is arranged on down-hole oil tube column bottom as core, adopts the combination of two-stage oil pipe and plug-in type electric submersible pump technology, can be used for more than 7 inches in sleeve pipe, and the automatic closing well in down-hole while having realized pump operation, without the object of filling hydraulic pressure well.This invention can be simplified the pump detection and workover of marine electric submersible pumping well, shortens the activity duration, reduces reservoir damage.
Summary of the invention
The object of the present invention is to provide a kind of process pipe string for offshore oil production, can, in the time that oil well needs pump detection and workover, needn't kill-job remove electric submersible pump, without job platform, not only shorten the activity duration, also can reduce oil layer pollution.
Object of the present invention can be achieved by the following technical measures:
This electric submersible pump process pipe string comprises tubing string assembly and packs the electric submersible pump assembly in tubing string assembly into, described tubing string assembly comprises the oil pipe that is inserted in inside pipe casing, the front end of oil pipe is provided with not killing prevention switch, described electric submersible pump assembly comprises electric submersible pump and is installed on the not killing prevention switch action bars of pump leading section, described electric submersible pump is installed on oil pipe inside, and described not killing prevention switch action bars is positioned at not killing prevention switch top.
Object of the present invention also can be achieved by the following technical measures:
Described oil pipe and be not also provided with pump Connection Block between killing prevention switch, is provided with lock pawl and is combined on pump Connection Block with locking claw clip on described electric submersible pump; Between described lock pawl and electric submersible pump, be provided with sealing ring.
Described electric submersible pump front end connects the not position of killing prevention switch action bars and also offers intake.
Described electric submersible pump rear end connects into cable, and this cable is sealed to be covered in continuous-tube.
Described oil pipe is divided into interconnective two sections of oil pipes that diameter is different, in the large oil pipe of diameter, electric submersible pump is installed, and between the little oil-pipe external wall of diameter and sleeve pipe, packer and outlet valve is installed.
Described sleeve pipe is 7in sleeve pipe, and oil pipe is respectively 4 in oil pipes and 5in oil pipe.
Compared to prior art, the invention has the beneficial effects as follows:
Tubing string adopts up-thin-low-thick two-stage oil pipe combination, top oil pipe is provided with outward without casing pressure packer, oil pipe bottom, bottom is provided with the Connection Block of plug-in type electric submersible pump and the not killing prevention switch of unidirectional unlatching, and this whole set of tubing string and tool combinations are installed on down-hole as the phase of column length in well casing.The plug-in type electric submersible pump of intake underneath type is carried and is gone into the well by continuous-tube, insert locking in pump Connection Block, sealing, simultaneously not killing prevention switch of killing prevention switch operating arm opening not, gets through oil pipe passage, stratum production fluid via electric submersible pump lifting along annular space output ground between continuous-tube and oil pipe.In the time that electric submersible pump trips out, killing prevention switch is not closed automatically, cuts off oil pipe passage.
Use simple downhole tool to realize the snubbing serving of electric immersible pump well inspection pump, simplify work flow, shorten the activity duration, save job platform, save operating cost; When inspection pump, without kill-job, reduce reservoir damage, protection reservoir productivity.
accompanying drawing explanation:
Fig. 1 is the structural representation of embodiment of the present invention assembly;
Fig. 2 is the structural representation of the electric submersible pump assembly of the embodiment of the present invention;
Fig. 3 is the general assembly drawing of the embodiment of the present invention.
In figure: 1-4 in oil pipe, 2-packer, 3-7in sleeve pipe, 4-5in oil pipe, 5-pump Connection Block, 6-is killing prevention switch not, 7-outlet valve, 8-continuous-tube, 9-cable, 10-electric submersible pump, 11-sealing ring, 12-locks pawl, 13-intake, 14-is killing prevention switch action bars not.
the specific embodiment:
Shown in Fig. 1, Fig. 2, a kind of process pipe string for offshore oil production, in 7in sleeve pipe 3, order is lowered to not killing prevention switch 6, pump Connection Block 5, 5in oil pipe 4,4 in oil pipe 1(and wherein comprises packer 2) to well mouth oil pipe hanger, tubing section installation, now not killing prevention switch 6 in closed condition.By electric submersible pump 10, sealing ring 11, lock pawl 12, intake 13, killing prevention switch action bars 14 is not assembled into plug-in type electric submersible pump, cable 9 is passed from continuous-tube 8 inside, connect electric submersible pump 10 and continuous-tube 8, use injection device for coiled tubing to carry plug-in type electric submersible pump to enter in the oil pipe having installed, until lock pawl 12 enters the rear kayser of pump Connection Block 5, simultaneously sealing ring 11 and pump Connection Block 5 form sealing pair, killing prevention switch action bars 14 does not enter not killing prevention switch 6 and opens oil pipe passage, a whole set of process pipe string is installation, can enter production status.
In the time that needs carry out pump detection and workover, above carry continuous-tube 8, drive electric submersible pump 10, sealing ring 11, lock pawl 12 and killing prevention switch action bars 14 is not up, lock pawl 12 departs from pump Connection Block 5 makes electric submersible pump 10 releases; Sealing ring 11 departs from pump Connection Block 5 depressurizations, and electric submersible pump is communicated with in oil pipe space Shang Xia 10; Killing prevention switch action bars 14 does not propose not killing prevention switch 6 simultaneously, and killing prevention switch 6 is not closed oil pipe passage partition formation fluid, and plug-in type electric submersible pump and continuous-tube can trip out safely.
Claims (6)
1. the process pipe string for offshore oil production, it is characterized in that, comprise tubing string assembly and pack the electric submersible pump assembly in tubing string assembly into, described tubing string assembly comprises the oil pipe that is inserted in inside pipe casing, the front end of oil pipe is provided with not killing prevention switch, described electric submersible pump assembly comprises electric submersible pump and is installed on the not killing prevention switch action bars of pump leading section, and described electric submersible pump is installed on oil pipe inside, and described not killing prevention switch action bars is positioned at not killing prevention switch top.
2. a kind of process pipe string for offshore oil production according to claim 1, is characterized in that, described oil pipe and be not also provided with pump Connection Block between killing prevention switch is provided with lock pawl and is combined on pump Connection Block with locking claw clip on described electric submersible pump; Between described lock pawl and electric submersible pump, be provided with sealing ring.
3. a kind of process pipe string for offshore oil production according to claim 1, is characterized in that, described electric submersible pump front end connects the not position of killing prevention switch action bars and also offers intake.
4. a kind of process pipe string for offshore oil production according to claim 1, is characterized in that, described electric submersible pump rear end connects into cable, and this cable is sealed to be covered in continuous-tube.
5. a kind of process pipe string for offshore oil production according to claim 1, it is characterized in that, described oil pipe is divided into interconnective two sections of oil pipes that diameter is different, in the large oil pipe of diameter, electric submersible pump is installed, and between the little oil-pipe external wall of diameter and sleeve pipe, packer and outlet valve is installed.
6. a kind of process pipe string for offshore oil production according to claim 5, is characterized in that, described sleeve pipe is 7in sleeve pipe, and oil pipe is respectively 4 in oil pipes and 5in oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210432831.7A CN103790523A (en) | 2012-11-03 | 2012-11-03 | Technique string for offshore oil production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210432831.7A CN103790523A (en) | 2012-11-03 | 2012-11-03 | Technique string for offshore oil production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103790523A true CN103790523A (en) | 2014-05-14 |
Family
ID=50666535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210432831.7A Pending CN103790523A (en) | 2012-11-03 | 2012-11-03 | Technique string for offshore oil production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103790523A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105735947A (en) * | 2016-03-07 | 2016-07-06 | 能新科（西安）油气技术有限公司 | No-killing operation downhole switching system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4433725A (en) * | 1981-10-02 | 1984-02-28 | Baker International Corporation | Adjustable spacer with rotational lock |
| CN2054482U (en) * | 1989-04-15 | 1990-03-14 | 吉林省油田管理局扶余采油一厂 | Double-level three-purpose deep-well christmas pump |
| CN201137464Y (en) * | 2008-01-04 | 2008-10-22 | 大庆油田有限责任公司 | Prearranged process pipe column for gas well maintenance without killing |
| CN202338292U (en) * | 2011-11-03 | 2012-07-18 | 大港油田集团有限责任公司 | Injection-production pipe string of exhaustion type oil-gas reservoir underground gas storage |
-
2012
- 2012-11-03 CN CN201210432831.7A patent/CN103790523A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4433725A (en) * | 1981-10-02 | 1984-02-28 | Baker International Corporation | Adjustable spacer with rotational lock |
| CN2054482U (en) * | 1989-04-15 | 1990-03-14 | 吉林省油田管理局扶余采油一厂 | Double-level three-purpose deep-well christmas pump |
| CN201137464Y (en) * | 2008-01-04 | 2008-10-22 | 大庆油田有限责任公司 | Prearranged process pipe column for gas well maintenance without killing |
| CN202338292U (en) * | 2011-11-03 | 2012-07-18 | 大港油田集团有限责任公司 | Injection-production pipe string of exhaustion type oil-gas reservoir underground gas storage |
Non-Patent Citations (1)
| Title |
|---|
| 洪汉林: "抽油井不压井检泵", 《石油钻采工艺》, no. 2, 31 December 1984 (1984-12-31), pages 75 - 78 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105735947A (en) * | 2016-03-07 | 2016-07-06 | 能新科（西安）油气技术有限公司 | No-killing operation downhole switching system |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140514 |