CN103806878B - Not kill-job of sea electric pump lifting technology tubing string - Google Patents
Not kill-job of sea electric pump lifting technology tubing string Download PDFInfo
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- CN103806878B CN103806878B CN201310099289.2A CN201310099289A CN103806878B CN 103806878 B CN103806878 B CN 103806878B CN 201310099289 A CN201310099289 A CN 201310099289A CN 103806878 B CN103806878 B CN 103806878B
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Abstract
The invention discloses not kill-job of sea electric pump lifting technology tubing string, comprise the control tubing string and the flow string that interconnect cooperation, described control tubing string comprises the sand-proof sand filtering pipe, pressure testing pressure transmission cylinder, the nothing joint cuff pipe that connect successively from bottom to top, described flow string is arranged on without in joint cuff pipe, and flow string comprises the electric pump unit, ball-and-seat, cable conversion equipment, the coiled tubing that connect successively from bottom to top. Between described sand-proof sand filtering pipe and pressure testing pressure transmission cylinder, be connected with filling packer, be set with close plug device in the upper end of filling packer, described close plug device bottom is provided with guiding step; Described pressure testing pressure transmission cylinder and without being connected with storm valve between joint cuff pipe, is describedly provided with guiding reducing step without joint hoop sleeve bottom. The present invention is the mode by liquid controling pipe line transmission pressure by ground hydraulic pump pressurization, comes under control well, from stratum to the open and close of well head flow channel, offshore oil production well to be carried out not kill-job inspection pump, to change the operation such as pump, maintenance downhole cable.
Description
Technical field
The present invention relates to flow string, specifically a kind of not kill-job of sea electric pump lifting technology tubing string.
Background technology
Exploitation of offshore oil and gas is subject to the operating environment feature impact of " high-tech, highly dense, excessive risk ", and well control operation technique is had relatively high expectations. in domestic oil-water well operation at sea, substantially all take kill-job well workover at present, inject the well killing fluid of the liquid-tight degree of Reasonable Well by high pressure pump truck at oil-water well oil jacket annular space, make oil-water well well liquid column pressure be greater than strata pressure, avoid occurring blowout in the time of operation lower oil tube post, but adopt the method for kill job to have following defect: 1, require the data such as well in operation reservoir geology pressure accurately to grasp, the necessary absolutely accurate of the institute's well control that does design, both prevented from designing the pernicious work accident of the too small initiation blowout of well killing fluid density, prevent from again designing the excessive well killing fluid that causes of well killing fluid density and enter stratum, stratum is polluted and production declining is even not fuel-displaced, 2, in kill job process, stratum energy can be with the kill-job power time compared with its stratum energy of large well continuous accumulated pressure, when head of liquid that its accumulation of pressure produces higher than pit shaft well killing fluid to a certain extent, will there is blowout, now again recovering bottom pressure balance by kill-weight fluid density has little time, must shunt in a well and stop operation, job scheduling is also subject to very big impact.
In produced on-site, the widely used practice is to adopt snubbing serving technology, when utilizing this technology can avoid kill job injury stratum, completes safely and efficiently the operation that removes of underground work pipe column. as Chinese patent ZL200910020440.2, the day for announcing is on September 9th, 2009, name is called Snubbing serving device of combined type hydraulic oil-water well and discloses a kind of Snubbing serving device of combined type hydraulic oil-water well, it is by the triple ram preventer that surges being fixed on oil well big four, be located at the first order annular preventer surging on triple ram preventer by order, second annular preventer of rising four-way, fixing anti-jack slips, the self-tightening anti-jack slips that surges, the stand of cabinet shape, oil cylinder, hoisting cross beam, hydraulically balanced valve, the compositions such as relief valve surge, this invention has solved a difficult problem for land snubbing serving complicated technology preferably, ensure the enforcement without packer tubing string snubbing serving technique. but this technology to the special marine environment feature of operation on the sea, platform working condition, marine former well is supporting has cable-passing packer, safety valve tubing string etc. to adapt to, affect the popularization in oil well at sea of not kill-job technology, this is offshore oil water well operation technical barrier to be solved.
In view of this,, for the problems referred to above, propose a kind of reasonable in design and effectively improve not kill-job of the sea electric pump lifting technology tubing string of above-mentioned disappearance.
Summary of the invention
The object of the present invention is to provide not kill-job of sea electric pump lifting technology tubing string, a kind ofly can open or close from stratum to the process pipe string of well head flow channel, mode by the pressurization of ground hydraulic pump by liquid controling pipe line transmission pressure, come under control well, from stratum to the open and close of well head flow channel, offshore oil production well to be carried out to snubbing serving.
In order to reach above-mentioned purpose, the invention provides following technical scheme, not kill-job of sea electric pump lifting technology tubing string, comprise the control tubing string and the flow string that interconnect cooperation, described control tubing string comprises the sand-proof sand filtering pipe, pressure testing pressure transmission cylinder, the nothing joint cuff pipe that connect successively from bottom to top, described flow string is arranged on without in joint cuff pipe, and flow string comprises the electric pump unit, ball-and-seat, cable conversion equipment, the coiled tubing that connect successively from bottom to top.
Between described sand-proof sand filtering pipe and pressure testing pressure transmission cylinder, be connected with filling packer, be set with close plug device in the upper end of filling packer, described close plug device bottom is provided with guiding step; Described pressure testing pressure transmission cylinder and without being connected with storm valve between joint cuff pipe, is describedly provided with guiding reducing step without joint hoop sleeve bottom.
The urceolus that described storm valve comprises central tube and is connected with central tube, described urceolus upper end and top connection socket, described urceolus lower end and lower contact socket, be provided with piston between described central tube and urceolus, is also provided with spring and valve plate in piston lower end.
Described control tubing string also comprises the twin-stage big four connecting without joint cuff pipe upper end, is also being provided with liquid controling pipe line and pressure transmission capillary without joint cuff pipe.
Described cable conversion equipment comprises the cable sealed joint and the lower contact that mutually connect up and down, and described cable sealed joint bottom interval is provided with cable seal tubular body structure, and in tubular body structure, seal pressure cap is set; Described cable sealed joint and lower contact are threaded connection.
Described pressure testing pressure transmission cylinder comprises interconnective top connection, central tube, described central tube arranged outside has outer tube, described central tube and outer tube connect by upper stopper and lower block headgear respectively, between described central tube and outer tube, form annular space, in described upper stopper, offer the pressure transmission capillary connecting hole that is communicated with extraneous and annular space, described pressure testing pressure transmission cylinder central tube is provided with the intercommunicating pore with internal communication.
Compared to prior art, the invention has the beneficial effects as follows: the present invention has filled up current oil scene does not have offshore field to close the blank of carrying out snubbing serving by self tubing string safety valve, has significant technique effect and economic benefit. Use the present invention to implement the operations such as not kill-job inspection pump for offshore field, can closing by ground hydraulic control storm valve, oil well is implemented not kill-job inspection pump, changed the operation such as pump, maintenance downhole cable, can avoid occurring blowout in the time of operation lower oil tube post, inject well killing fluid to formation contaminant and the even not fuel-displaced phenomenon of production declining, reduce to greatest extent the impact of underground work on oil well productivity, improved rate of oil production, improved development effectiveness. Pressure testing pressure transmission cylinder can be implemented the monitoring of overall process real-time pressure to strata pressure, and job execution is safe and reliable; Storm valve by liquid controling pipe line pressurize, release realize open and close, simple to operation, reduced operation and washed kill-job operation, saved operating cost.
Brief description of the drawings
Fig. 1 is the structural representation of not kill-job of sea electric pump lifting technology tubing string of the present invention;
Fig. 2 is the structural representation of cable conversion equipment;
Fig. 3 is the structural representation of storm valve;
Fig. 4 is the structural representation of pressure testing pressure transmission cylinder.
In figure: twin-stage big four 1, without joint cuff pipe 2, coiled tubing 3, liquid controling pipe line 4, pressure transmission capillary 5, cable conversion equipment 6, ball-and-seat 7, electric pump unit 8, storm valve 9, pressure testing pressure transmission cylinder 10, close plug device 11, filling packer 12, sand-proof sand filtering pipe 13, cable sealed joint 6-1, cable seal pressure cap 6-3, emergency valve piston 9-3, safety valve central tube 9-5, safety valve spring 9-6, safety valve valve plate 9-7, pressure-transmission tube central tube 10-2, stopper 10-4 on pressure-transmission tube, pressure-transmission tube outer tube 10-5, pressure-transmission tube intercommunicating pore 10-6, stopper 10-7 under pressure-transmission tube.
Detailed description of the invention
Relevant detailed description of the present invention and technology contents, coordinate brief description of the drawings as follows, but accompanying drawing only provides the use of reference with explanation, is not used for the present invention to be limited.
Shown in Fig. 1, a kind of not kill-job of sea electric pump lifting technology tubing string, formed by the flow string cooperatively interacting and control tubing string, control tubing string and comprise the sand-proof sand filtering pipe 13 linking together from bottom to top, filling packer 12, close plug device 11, pressure testing pressure transmission cylinder 10, pressure transmission capillary 5, storm valve 9, liquid controling pipe line 4, without joint cuff pipe 2, twin-stage big four 1, described pressure testing pressure transmission cylinder 10 is arranged on storm valve 9 bottoms, described close plug device 11 is arranged on the upper end of filling packer 12, flow string is arranged on without in joint cuff pipe 2, flow string tubing string comprises the electric pump unit 8 linking together from bottom to top, ball-and-seat 7, cable conversion equipment 6, coiled tubing 3, described cable conversion equipment 6 is arranged on ball-and-seat 7 upper ends and is positioned at without joint cuff pipe 2 inside. described nothing joint cuff pipe 2 bottoms are provided with guiding reducing step, and described close plug device 11 bottoms are provided with guiding step.
Fig. 2 is cable conversion device structure figure, is made up of cable sealed joint 6-1, caulking gum 6-2, seal pressure cap 6-3, lower contact 6-4, and described cable sealed joint 6-1 is that bottom is provided with the tubular body of cable seal structure in position at regular intervals; Described cable sealed joint 6-1 and lower contact 6-4 are threaded connection.
Fig. 3 is storm valve structure chart, formed by top connection 9-1, liquid controling pipe line connector 9-2, piston 9-3, adapter sleeve 9-4, central tube 9-5, spring 9-6, valve plate 9-7 and lower contact 9-8, described liquid controling pipe line connector 9-2 upper end and top connection 9-1 are socketed by screw thread, between described central tube 9-5 and adapter sleeve 9-4, be provided with piston 9-3, be also provided with spring 9-6 and valve plate 9-7 in piston 9-3 lower end.
Fig. 4 is pressure testing pressure transmission cylinder structure chart, formed by top connection 10-1, central tube 10-2, pressure transmission capillary connecting hole 10-3, upper stopper 10-4, outer tube 10-5, intercommunicating pore 10-6 and lower stopper 10-7, described central tube 10-2 and outer tube 10-5 are respectively by upper stopper 10-4 and lower stopper 10-7 socket, and described central tube 10-2 is installed on the intercommunicating pore 10-6 with internal communication.
While use at the scene, undertaken by following operation sequence:
1, lower control tubing string, the present invention is connected sand control tubing string successively by the order of accompanying drawing 1 on ground, with under construction oil pipe to after design attitude routinely gravel filling sand prevention operation oil reservoir is implemented to sand control construction, after completing sand control operation, by the order of accompanying drawing 1, control tubing string is connected on ground successively again, be lowered to storm valve 9 in process and be held open state by liquid controling pipe line 4 pressurizations, pressure testing pressure transmission cylinder 10 also will constantly inject high pure nitrogen by pressure transmission capillary 5, prevent that well liquid from entering pressure testing pressure transmission cylinder 10 and stopping up pressure transmission capillary 5, control under tubing string and be connected with filling packer 12 by close plug device 11 after design attitude, then set on head controlling subordinate's big four that tubing string sets twin-stage big four 1, completing control tubing string goes into the well and sets sealing.
2, lower flow string, higher level's big four of twin-stage big four 1 is installed, flow string is connected successively on ground by the order of accompanying drawing 1, electric pump unit 8, ball-and-seat 7, cable conversion equipment 6 is lowered to controls tubing string inner chamber, electric-pump cable is installed outward to transfer in flow string by flow string by cable conversion equipment 6 and is installed, cable conversion equipment 6 is by cable sealed joint 6-1, caulking gum 6-2 and seal pressure cap 6-3 have coordinated sealing, after connecting the interior default electric-pump cable of coiled tubing 3, can conveniently be lowered into by designing requirement the design attitude of controlling tubing string inner chamber, then flow string is sitting on higher level's big four that twin-stage big four 1 is installed. in the time that being lowered into control tubing string inner chamber, flow string to note controlling well speed, and by the depth survey electric-pump cable insulation against ground value of every lower 100 meters, flow string can carry out oil well after being lowered into design attitude and installing well head production tree and normally produce, in oil well production process, bottom hole flowing pressure can be implemented the monitoring of overall process real-time pressure to oil-well strata pressure by the intercommunicating pore 10-6 of pressure testing pressure transmission cylinder 10, convenient collecting formation pressure data.
3, snubbing serving, oil well electric pump unit breaks down, cable breakdowns etc. need be implemented not kill-job inspection pump to oil well, change pump, when the operations such as maintenance downhole cable, can pass through 4 pressure releases of ground hydraulic-control pipeline, control closing of storm valve 9, now the flow channel of oil reservoir from stratum to well head is because closing of storm valve 9 blocked, well liquid column pressure is not affected by strata pressure, can avoid occurring blowout in the time of operation lower oil tube post, inject well killing fluid to formation contaminant and the even not fuel-displaced phenomenon of production declining, reduce to greatest extent the impact of underground work on oil well productivity, improve rate of oil production, improve development effectiveness. in snubbing serving process, can implement the monitoring of overall process real-time pressure to strata pressure by pressure testing pressure transmission cylinder 10, guarantee that job execution is safe and reliable. after snubbing serving completes, then face liquid controling pipe line 4 by ground and pressurize, open storm valve, the flow channel of oil reservoir from stratum to well head, because the unlatching of storm valve 9 reopens, conveniently puts into production. storm valve 9 by liquid controling pipe line 4 pressurize, release realize open and close, simple to operation, reduced operation and washed kill-job operation, saved operating cost.
The foregoing is only preferred embodiment of the present invention, non-in order to limit the scope of the claims of the present invention, other use the equivalence of patent spirit of the present invention to change, and all should all belong to the scope of the claims of the present invention.
Claims (5)
1. not kill-job of sea electric pump lifting technology tubing string, it is characterized in that, comprise the control tubing string and the flow string that interconnect cooperation, described control tubing string comprises the sand-proof sand filtering pipe, pressure testing pressure transmission cylinder, the nothing joint cuff pipe that connect successively from bottom to top, described flow string is arranged on without in joint cuff pipe, and flow string comprises the electric pump unit, ball-and-seat, cable conversion equipment, the coiled tubing that connect successively from bottom to top; Between described sand-proof sand filtering pipe and pressure testing pressure transmission cylinder, be connected with filling packer, be set with close plug device in the upper end of filling packer, described close plug device bottom is provided with guiding step; Described pressure testing pressure transmission cylinder and without being connected with storm valve between joint cuff pipe, is describedly provided with guiding reducing step without joint hoop sleeve bottom.
2. not kill-job of sea electric pump lifting technology tubing string according to claim 1, it is characterized in that, the urceolus that described storm valve comprises storm valve central tube and is connected with storm valve central tube, described urceolus upper end and storm valve top connection socket, described urceolus lower end and storm valve lower contact socket, between described storm valve central tube and urceolus, be provided with piston, be also provided with spring and valve plate in piston lower end.
3. not kill-job of sea electric pump lifting technology tubing string according to claim 1, is characterized in that, described control tubing string also comprises the twin-stage big four connecting without joint cuff pipe upper end, in without joint cuff pipe, is also provided with liquid controling pipe line and pressure transmission capillary.
4. not kill-job of sea electric pump lifting technology tubing string according to claim 1, it is characterized in that, described cable conversion equipment comprises the cable sealed joint and the lower contact of cable conversion equipment that mutually connect up and down, described cable sealed joint bottom interval is provided with cable seal tubular body structure, and in tubular body structure, seal pressure cap is set; Described cable sealed joint and the lower contact of cable conversion equipment are threaded connection.
5. not kill-job of sea electric pump lifting technology tubing string according to claim 1, it is characterized in that, described pressure testing pressure transmission cylinder comprises interconnective pressure testing pressure transmission cylinder top connection, pressure testing pressure transmission cylinder central tube, described pressure testing pressure transmission cylinder central tube arranged outside has outer tube, described pressure testing pressure transmission cylinder central tube and outer tube connect by upper stopper and lower block headgear respectively, between described pressure testing pressure transmission cylinder central tube and outer tube, form annular space, in described upper stopper, offer the pressure transmission capillary connecting hole that is communicated with extraneous and annular space, described pressure testing pressure transmission cylinder central tube is provided with the intercommunicating pore with internal communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310099289.2A CN103806878B (en) | 2012-11-05 | 2013-03-26 | Not kill-job of sea electric pump lifting technology tubing string |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210434979.4 | 2012-11-05 | ||
| CN201210434979 | 2012-11-05 | ||
| CN2012104349794 | 2012-11-05 | ||
| CN201310099289.2A CN103806878B (en) | 2012-11-05 | 2013-03-26 | Not kill-job of sea electric pump lifting technology tubing string |
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| Publication Number | Publication Date |
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| CN103806878A CN103806878A (en) | 2014-05-21 |
| CN103806878B true CN103806878B (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310099289.2A Active CN103806878B (en) | 2012-11-05 | 2013-03-26 | Not kill-job of sea electric pump lifting technology tubing string |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109057755B (en) * | 2018-08-19 | 2021-02-19 | 中国海洋石油集团有限公司 | Underground rotational flow gas-liquid separate production pipe column and system analysis method |
| CN114776262B (en) * | 2022-04-02 | 2023-07-28 | 中国海洋石油集团有限公司 | Underground thermal power generation device for offshore thickened oil thermal recovery and application thereof |
| CN114893157B (en) * | 2022-06-21 | 2024-02-02 | 王芳 | Layered oil extraction method for petroleum |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4494602A (en) * | 1982-01-14 | 1985-01-22 | Societe Nationale Elf Aquitaine (Production) | Electrical connection device for an underwater well head |
| CN101592023A (en) * | 2009-06-23 | 2009-12-02 | 中国海洋石油总公司 | Thermal production snubbing device |
| CN201620768U (en) * | 2010-03-03 | 2010-11-03 | 中国石油天然气股份有限公司 | Self-spraying and lifting interactive column |
| CN201908632U (en) * | 2010-11-11 | 2011-07-27 | 中国石油天然气股份有限公司 | Offshore self-blowout and artificial lifting integrated well completion tubular column |
| CN202152678U (en) * | 2011-08-30 | 2012-02-29 | 靳涛 | Novel capillary pipe pressure transmitting cylinder device |
| CN203175500U (en) * | 2012-11-05 | 2013-09-04 | 中国石油化工股份有限公司 | Marine non-well-control electric pump lifting technique pipe column |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7114572B2 (en) * | 2004-01-15 | 2006-10-03 | Schlumberger Technology Corporation | System and method for offshore production with well control |
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2013
- 2013-03-26 CN CN201310099289.2A patent/CN103806878B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4494602A (en) * | 1982-01-14 | 1985-01-22 | Societe Nationale Elf Aquitaine (Production) | Electrical connection device for an underwater well head |
| CN101592023A (en) * | 2009-06-23 | 2009-12-02 | 中国海洋石油总公司 | Thermal production snubbing device |
| CN201620768U (en) * | 2010-03-03 | 2010-11-03 | 中国石油天然气股份有限公司 | Self-spraying and lifting interactive column |
| CN201908632U (en) * | 2010-11-11 | 2011-07-27 | 中国石油天然气股份有限公司 | Offshore self-blowout and artificial lifting integrated well completion tubular column |
| CN202152678U (en) * | 2011-08-30 | 2012-02-29 | 靳涛 | Novel capillary pipe pressure transmitting cylinder device |
| CN203175500U (en) * | 2012-11-05 | 2013-09-04 | 中国石油化工股份有限公司 | Marine non-well-control electric pump lifting technique pipe column |
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| CN103806878A (en) | 2014-05-21 |
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