CN207863925U - A kind of submersible electric pump flow string constant-pressure sliding sleeve - Google Patents

A kind of submersible electric pump flow string constant-pressure sliding sleeve Download PDF

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Publication number
CN207863925U
CN207863925U CN201721490621.8U CN201721490621U CN207863925U CN 207863925 U CN207863925 U CN 207863925U CN 201721490621 U CN201721490621 U CN 201721490621U CN 207863925 U CN207863925 U CN 207863925U
Authority
CN
China
Prior art keywords
electric pump
outer barrel
flow string
inner tube
submersible electric
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201721490621.8U
Other languages
Chinese (zh)
Inventor
任鹏
韦敏
岳晟
姜永生
马兆军
周学海
吴少勋
李恩清
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Petroleum and Chemical Corp
Sinopec Shengli Oilfield Co Offshore Oil Extraction Plant
Original Assignee
China Petroleum and Chemical Corp
Sinopec Shengli Oilfield Co Offshore Oil Extraction Plant
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Petroleum and Chemical Corp, Sinopec Shengli Oilfield Co Offshore Oil Extraction Plant filed Critical China Petroleum and Chemical Corp
Priority to CN201721490621.8U priority Critical patent/CN207863925U/en
Application granted granted Critical
Publication of CN207863925U publication Critical patent/CN207863925U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model be a kind of submersible electric pump flow string constant-pressure sliding sleeve, it can be achieved that submersible electric pump flow string positive and negative circulation well cleanup.This constant-pressure sliding sleeve includes outer barrel and inner tube, and the ontology of outer barrel is equipped with circulation port, and inner tube is fixed in outer barrel by shear pin, blocks circulation port, and the both ends of outer barrel are connect with oil pipe respectively.The present apparatus is connected in the flow string above electric pump unit, instead of ball-and-seat and bleeder, enters hanger down toward projected depth back seat in flow string, setting cable-passing packer step by step can be just suppressed after filling production tree.This tool construction is simple, wide adaptation range, and to wellbore trajectory change rate and hole deviation no requirement (NR), construction and installation are easy, reliable operation, it is of low cost, big orifice circulation well cleanup channel can be established after unlatching, using effect is notable, significantly improves the efficiency of well workover construction, reduces operating cost.

Description

A kind of submersible electric pump flow string constant-pressure sliding sleeve
Technical field
The utility model is related to petroleum industry submerged electric oil pump well working string, especially a kind of submersible electric pump flow string is fixed Press sliding sleeve, it can be achieved that submersible electric pump flow string positive and negative circulation well cleanup.
Background technology
It is increasingly perfect with Reservoir Protection technology based on the mechanical oil recovery pattern of offshore field is exploited with submersible electric pump, The structure drawback of original submersible electric pump flow string increasingly shows.Traditional electric submersible pump producing tubular column can only reacting cycle well-flushing, its life Production tubing string structure be from bottom to top:Electric pump unit+ball-and-seat+peg type bleeder+cable-passing packer+storm valve. When if necessary to implement operation to flow string, needing first caber to open, bleeder, then reacting cycle washes kill-job.For hole deviation Greatly, the high well of well depth trail change rate need lower hollow stem in oil pipe in positive flushing oil pipe sump oil open peg type bleeder, Its working procedure heavy workload, time-consuming, operating expenses is high.Due to being equipped with air bleeding valve, its interior latus rectum only in cable-passing packer There is 9.39mm, its interior latus rectum also only has 8mm after opening peg type bleeder.Even opening reacting cycle well-flushing after bleeder, by It is small in the sectional area of its well-flushing passage, well-flushing pressure is higher, be easy to cause dynamic miss, certain pollution is also will produce to stratum. Therefore it needs to invent a kind of tool for meeting and just suppressing setting cable-passing packer, and can realize the work of big orifice reverse circulation Tool.
Invention content
The utility model is exactly to realize that submersible electric pump flow string big orifice reverse circulation provides a kind of submersible electric pump Flow string constant-pressure sliding sleeve, is installed in flow string, substitutes ball-and-seat and peg type bleeder, that is, meets cable envelope Every device setting requirement and meet the big orifice reverse circulation well-flushing requirement of flow string, reduce workover fluid leakage, facilitate well workover Operation improves construction efficiency, reduces production cost.
What the purpose of this utility model was realized in:A kind of submersible electric pump flow string constant-pressure sliding sleeve includes outer barrel and interior The ontology of pipe, outer barrel is equipped with circulation port, and inner tube is fixed in outer barrel by shear pin, blocks circulation port, the both ends of outer barrel It is connect respectively with oil pipe.
The utility model has following significant using effect compared with prior art:
The present apparatus is connected in the flow string above electric pump unit, instead of ball-and-seat and bleeder, in flow string Enter hanger down toward projected depth back seat, setting cable-passing packer step by step can be just suppressed after filling production tree.Normally producing Period disclosure satisfy that electric pump produces the demand of all kinds of operating modes as the tool of production of flow string, such as:Normal production status is cut Stream, which builds the pressure, verifies the operating modes such as pump efficiency operating mode, the calculated tubing and casing liquid level pressure differential limit operating mode of submersible electric pump completion depth of setting, It can realize the sealing of flow string.Just being suppressed out of oil pipe after pressure reaches setting value unidirectionally to open, and realizing big orifice just Reacting cycle.Later stage when workover operation construction, is just suppressed to the shear force of this tool shear pin, due to the interior latus rectum of this tool Compared with the interior latus rectum of peg type bleeder greatly, it can be achieved that the unidirectional purpose for opening big orifice circulation well cleanup channel.In cable packer Under the premise of air bleeding valve latus rectum is constant, increase well-flushing passage, well cleanout and reverse cleanout mill resistance can be made to reduce, operation pressure declines, dynamic is leaked It loses and reduces, circulation well cleanup pressure can be reduced, reduce the problem of washing kill-job wastage.
Before this tool assemble, the pressure under tubing and casing liquid level pressure differential limit operating mode is calculated according to submersible electric pump completion depth of setting Difference, installation, which has, in this tool corresponds to shear force shear pin.This tool is mounted on electric submersible pump unit, in life After producing tubing string tripping in construction, just suppressed from oil pipe.Due to the present apparatus shut off generation pressure difference can it is setting cross cable envelope Every device and it can ensure that the leakproofness of flow string.After electric pump booting production, in the pressure difference cut less than device shear pin, The present apparatus can not open;It is just being suppressed to the shear pressure value of shear pin, pin from oil pipe by turn on pump when next job execution It is realized after cutting and is just suppressing the unidirectional purpose for opening big orifice circulation well cleanup channel, you can the cycle for carrying out lower step is washed kill-job and applied Work.
This tool construction is simple, wide adaptation range, and to wellbore trajectory change rate and hole deviation no requirement (NR), construction and installation are easy, Reliable operation, it is of low cost, big orifice circulation well cleanup channel can be established after unlatching, using effect is notable, significantly improves well workover The efficiency of construction reduces operating cost.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Specific implementation mode
The utility model is described in detail below in conjunction with attached drawing, not limits the scope of protection of the utility model.It is as described below to be only The preferred embodiment of the utility model, other use the equivalence changes of the utility model, should all belong to the protection of the utility model Range.
Referring to Fig. 1, a kind of submersible electric pump flow string constant-pressure sliding sleeve includes outer barrel 1 and inner tube 2, is set on the ontology of outer barrel 1 There are circulation port 4, inner tube 2 to be fixed in outer barrel 1 by shear pin 5, block circulation port 4, the both ends of outer barrel 1 connect with oil pipe respectively It connects.
The centre bore upper end of said inner tube 2 is equipped with inner chamfer, and the outer circle of inner tube 2 is that ladder outer circle, outer circle both ends are pacified respectively Sealing ring 3 and lower seal 6 are loaded onto, the cotter slot or pin hole of shear pin 5 are located in major diameter outer circle, positioned at circulation port 4 Lower section.
1 both ends of the outer barrel are respectively equipped with internal thread and external screw thread, its inner circle are step inner cavities, the step of inner circle lower part and Lower lumen is matched with the outer circle step and lower outer diameter of inner tube 2 respectively, and inner tube 2 can be located in after being hit down in outer barrel 1 On the step of chamber lower part.
The shear force of the shear pin 5 is more than the setting value of cable-passing packer, is more than submersible electric pump completion tripping in depth Spend the pressure difference under calculated tubing and casing liquid level pressure differential limit operating mode.
The top, lower end that the upper end of said inner tube 2 is located at circulation port 4 in outer barrel 1 are located in the lower lumen of outer barrel 1, real The now sealing of this tool.
When submersible electric pump flow string completion, tubing and casing liquid level pressure differential limit work is calculated according to design electric pump completion depth Pressure difference under condition selects the shear pin 5 of relevant shear power to be mounted in outer barrel 1, outer barrel 1 is connected to above electric pump unit Flow string in.According to projected depth tripping in flow string, installing production tree and just suppress, workover fluid acts in inner tube 2, Pressure difference is caused since inner tube 2 can generate to shut off, it can setting cable-passing packer.The pressure difference is less than tubing and casing liquid level pressure difference pole The pressure difference under operating mode is limited, shear pin 5 can not cut, and circulation port 4 can not open, can ensure the leakproofness of flow string. Booting production as the pressure difference between the decline of hydrodynamic face, oil pipe and oil jacket annular space aggravates, but can not be more than tubing and casing liquid level pressure difference Pressure difference under limiting condition, shear pin 5 can not be cut, and the leakproofness of flow string can not be opened, be can ensure that circulation port 4. When needing job execution, just suppressing to the setting shearing force pressure value of shear pin 5, shear pin 5 and inner tube 2 are in pressure difference Downlink under active force makes circulation port 4 open, establishes big orifice circulation well cleanup channel, you can carries out lower step cycle and wash kill-job to apply Work.
The embodiment described above is only exemplary embodiments, but the utility model is not limited only to these embodiments, ability The technical staff in domain can make modification under without departing from the spirit of the utility model and enlightenment.Aspect disclosed herein may In the presence of many changes, combination and modification, and all in the scope of the utility model, therefore, protection domain is not limited only to above Explanation.

Claims (4)

1. a kind of submersible electric pump flow string constant-pressure sliding sleeve, characterized in that including outer barrel and inner tube, the ontology of outer barrel, which is equipped with, to follow Annular distance, inner tube are fixed in outer barrel by shear pin, block circulation port, and the both ends of outer barrel are connect with oil pipe respectively;Shear pin The shear force of nail is more than the setting value of cable-passing packer, is more than the calculated tubing and casing liquid level of submersible electric pump completion depth of setting Pressure difference under pressure differential limit operating mode.
2. a kind of submersible electric pump flow string constant-pressure sliding sleeve as described in claim 1, characterized in that the centre bore of said inner tube Upper end is equipped with inner chamfer, and the outer circle of inner tube is that sealing ring and lower seal, shear pin are installed in ladder outer circle, outer circle both ends respectively The cotter slot or pin hole of nail are located in major diameter outer circle, positioned at the lower section of circulation port.
3. a kind of submersible electric pump flow string constant-pressure sliding sleeve as claimed in claim 2, characterized in that the outer barrel both ends difference Step inner cavity equipped with internal thread and external screw thread, its inner circle, the step and lower lumen of inner circle lower part respectively with the outer circle of inner tube Step and lower outer diameter match.
4. a kind of submersible electric pump flow string constant-pressure sliding sleeve as claimed in claim 3, characterized in that the upper end position of said inner tube In outer barrel above circulation port, lower end is located in the lower lumen of outer barrel.
CN201721490621.8U 2017-11-10 2017-11-10 A kind of submersible electric pump flow string constant-pressure sliding sleeve Expired - Fee Related CN207863925U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721490621.8U CN207863925U (en) 2017-11-10 2017-11-10 A kind of submersible electric pump flow string constant-pressure sliding sleeve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721490621.8U CN207863925U (en) 2017-11-10 2017-11-10 A kind of submersible electric pump flow string constant-pressure sliding sleeve

Publications (1)

Publication Number Publication Date
CN207863925U true CN207863925U (en) 2018-09-14

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Application Number Title Priority Date Filing Date
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112523697A (en) * 2019-09-18 2021-03-19 中国石油天然气股份有限公司 Drill bit and drilling equipment
CN114414176A (en) * 2022-03-30 2022-04-29 风凯换热器制造(常州)有限公司 Processing method and leakage detection method for double-layer conveying pipeline

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112523697A (en) * 2019-09-18 2021-03-19 中国石油天然气股份有限公司 Drill bit and drilling equipment
CN114414176A (en) * 2022-03-30 2022-04-29 风凯换热器制造(常州)有限公司 Processing method and leakage detection method for double-layer conveying pipeline
CN114414176B (en) * 2022-03-30 2022-06-03 风凯换热器制造(常州)有限公司 Processing method and leakage detection method for double-layer conveying pipeline

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GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20180914

Termination date: 20201110

CF01 Termination of patent right due to non-payment of annual fee