CN202645512U - Lift-type separate layer production string - Google Patents

Lift-type separate layer production string Download PDF

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Publication number
CN202645512U
CN202645512U CN 201220117994 CN201220117994U CN202645512U CN 202645512 U CN202645512 U CN 202645512U CN 201220117994 CN201220117994 CN 201220117994 CN 201220117994 U CN201220117994 U CN 201220117994U CN 202645512 U CN202645512 U CN 202645512U
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CN
China
Prior art keywords
string
production
oil
layer
pipe
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
CN 201220117994
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Chinese (zh)
Inventor
刘玉国
黄辉才
于昭东
曾凡春
张雪梅
丛娟
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
Oil Production Technology Research Institute of Sinopec Shengli Oilfield Co
Original Assignee
China Petroleum and Chemical Corp
Oil Production Technology Research Institute of Sinopec Shengli Oilfield Co
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Filing date
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Application filed by China Petroleum and Chemical Corp, Oil Production Technology Research Institute of Sinopec Shengli Oilfield Co filed Critical China Petroleum and Chemical Corp
Priority to CN 201220117994 priority Critical patent/CN202645512U/en
Application granted granted Critical
Publication of CN202645512U publication Critical patent/CN202645512U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a lift-type separate layer production string, which comprises a production string and a releasing string which are connected with each other. The production string comprises a hydraulic control pipeline, a hydraulic lift device, a production oil pipe, an oil-well pump and sealing plugs, wherein the hydraulic control pipeline, the hydraulic lift device, the production oil pipe, the oil-well pump and the sealing plugs are connected together from top to bottom; the releasing string comprises a hanging packer, a double-layer sand screen pipe and a separate layer packer; the double-layer sand screen pipe is arranged at the outer sides of the sealing plugs; the hanging packer is arranged at the upper end parts of the sealing plugs below the oil-well pump; and the separate layer packer is arranged in the middle of the sealing plugs and is located between two oil layers. The utility model provides the lift-type separate layer production string, i.e. a process string capable of performing convertible separate layer production of a combined interval, and underground multiple-interval switches are controlled to be turned on and off through the extension and contraction way of the string per se, and the combined exploitation is performed on different intervals of a production well.

Description

The ascending/decending separate-layer production string
Technical field
The utility model relates to the underground equipment of oil exploitation, specifically the ascending/decending separate-layer production string.
Background technology
The most domestic oil field has entered waterflood stage at present, and most employing of oil production method generally closed the pattern of adopting, and causes the oil-water well notes to adopt corresponding rate low, and interlayer contradiction is outstanding, and non-main layer reserves fail to obtain effective exploitation, have had a strong impact on oil well productivity.The widely used practice is to adopt layering oil production technology to control high aquifer formation production in the produced on-site, selects targetedly low aquifer to produce, and reduces the ineffective energy consumption that high aquifer formation production brings.
Loose sand oil accumulation selective sand control and oil production by layer integrated technique that oil field at home uses, it is existing by the compacting of sleeve pipe liquid feeding that layer technology changed in oil production by layer behind its selective sand control, the controlling hydraulic layer changing switch duty is difficult to visual supervisory control, such as Chinese patent ZL201020286610.X, the day for announcing is on June 8th, 2011, name is called and discloses a kind of selective sand control and oil production by layer integrated pipe column in the layering sand-control layering oil production integrated pipe column, it is by oil pipe, set and give up, the gravel pack instrument, layer separating packer, the switching regulator sand-proof pipe, plug forms, but one-trip string is to the full well selective sand control of loose sand oil accumulation oil well, the action of control hydraulic control floor switch can singly be adopted oil well production, divide and adopt, also can close and adopt, but its controlling hydraulic layer changing switch duty is difficult to visual supervisory control, oil reservoir generally closes to adopt and causes interlayer contradiction outstanding, serious interlayer interference, it is low that notes are adopted corresponding rate, the low contradiction of non-main layer reserves use rate, directly affect the raising of rate of oil production and oil field development benefit, this is multiple zone well recovery 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 the ascending/decending separate-layer production string of above-mentioned disappearance.
Summary of the invention
The purpose of this utility model is to provide the ascending/decending separate-layer production string, process pipe string that can the oil production by layer of convertible combination interval, the mode of elongation and shortening by tubing string self is come the open and close of multi-section multi-layer switch under the control well, and the different intervals of producing well are made up exploitation.
In order to reach above-mentioned purpose, the utility model provides the ascending/decending separate-layer production string, comprise interconnective flow string and Back-off Pipe String, described flow string comprises liquid controling pipe line, hydraulic pressure lifting device, production tube, oil well pump, the sealing plug that links together from top to bottom; Described Back-off Pipe String comprises hanging packer, double-deck sand screen, layer separating packer, described double-deck sand screen is arranged on the sealing plug outside, described hanging packer is arranged on the sealing plug upper end of oil well pump below, and described layer separating packer is arranged on the medium position of sealing plug and between two oil reservoirs.
Described flow string bottom is provided with the guiding plug, and described Back-off Pipe String bottom is provided with the bottom plug.
Described double-deck sand screen is that inner tube is provided with the tubular body of production channel design in the position at regular intervals; The sealing plug of described flow string is positioned at the double-deck sand screen of Back-off Pipe String, and the take off and landing strip movable sealing plug by flow string moves.
Described hydraulic pressure lifting device comprises central tube and the urceolus that is connected with central tube by connector, described central tube upper end outer hub hoop, and described urceolus lower end and lower contact socket also are being provided with stopper between central tube and the urceolus.
Described upper stopper is installed on the liquid controling pipe line connecting hole, and described central tube, upper stopper, urceolus all and between the connector are installed on O-ring seal.
Compared to prior art, the utility model filled up present oil scene do not have after the multiple zone layering can be by self tubing string elongation with shorten the blank of coming control change downhole production interval, have significant technique effect and economic benefit.Use the utility model to be the multiple zone oil production by layer, can be to the full well selective sand control of loose sand oil accumulation oil well, the elongation of control tubing string can singly be adopted oil well production with shortening, be divided and adopt, also can close and adopt, to greatest extent the performance in, the less permeable layer production capacity, improve rate of oil production, improved development effectiveness.Layering production is by liquid controling pipe line pressurization, release realization, and is simple to operation, can repeatedly change layer, reduced the operation number of times, saved operating cost.
Description of drawings
Fig. 1 is the structural representation of the utility model ascending/decending separate-layer production string;
Fig. 2 is the structural representation of selective sand control tubing string;
Fig. 3 is the structural representation of hydraulic pressure lifting device.
Wherein: washing pipe, 21-joint hoop, 22-central tube, the upper stopper of 23-, 24-urceolus, 25-connector, 26-lower contact in 1-liquid controling pipe line, 2-hydraulic pressure lifting device, 3-production tube, 4-oil well pump, 5-sealing, the double-deck sand screen of 6-, 7-plug, 8-layer separating packer, 9-guiding plug, 10-bottom plug, 11-construction oil pipe, the 12-.
The specific embodiment
Relevant detailed description of the present utility model and technology contents cooperate description of drawings as follows, yet accompanying drawing only provides the usefulness of reference with explanation, and the utility model is limited.
Shown in drawing, a kind of ascending/decending separate-layer production string is comprised of flow string and Back-off Pipe String, and flow string comprises liquid controling pipe line 1, hydraulic pressure lifting device 2, production tube 3, oil well pump 4, sealing plug 7 and guiding plug 9.Link together from top to bottom.Back-off Pipe String is comprised of hanging packer 5, double-deck sand screen 6, layer separating packer 8 and bottom plug 10.Described double-deck sand screen 6 is arranged on the sealing plug outside and is positioned at hanging packer 5 lower end oil reservoirs, described hanging packer is arranged on the sealing plug upper end of oil well pump below, and described layer separating packer 8 is arranged on the medium position of sealing plug and between two oil reservoirs.Described layer separating packer 8 is the oil and water contact expansible packer.Described flow string bottom is provided with the guiding plug, and described Back-off Pipe String bottom is provided with the bottom plug.
What Fig. 1 showed is the situation of 2 layers of ascending/decending layering sand-control layering oil production tubing string, the utility model can carry out layering sand-control layering oil production to a plurality of oil reservoirs simultaneously, every increase one deck, under Back-off Pipe String, only increase a double-deck sand screen 6 and layer separating packer 8, only increasing a sealing plug 7 in the flow string bottom gets final product, to greatest extent the performance in, the less permeable layer production capacity, improved rate of oil production, improved development effectiveness.
Described double-deck sand screen 6 is provided with the tubular body of production channel design in the position at regular intervals for inner tube.Flow string sealing plug 7 is positioned at the double-deck sand screen 6 of Back-off Pipe String, and the take off and landing strip movable sealing plug 7 by flow string moves, and each layer position sealing plug 7 cooperates the independent control of each layer of realization production status with the position that double-deck sand screen 6 is produced passages.
What Fig. 2 showed is selective sand control operating tool string structure chart, is comprised of construction oil pipe 11, hanging packer 5, double-deck sand screen 6, layer separating packer 8, bottom plug 10 and interior washing pipe 12.
Fig. 3 is the structural representation of hydraulic pressure lifting device, described hydraulic pressure lifting device 2 is comprised of joint hoop 21, central tube 22, upper stopper 23, urceolus 24, connector 25, lower contact 26, described upper stopper 23 is installed on the liquid controling pipe line connecting hole, and described central tube 22, upper stopper 23, urceolus 24 and 25 of connectors are installed on O-ring seal.
When using at the scene, undertaken by following operation sequence:
1, selective sand control
The order of the utility model by accompanying drawing 2 connected Back-off Pipe String successively on ground, with design attitude in construction oil pipe 11 lower going-into-wells, wash out foreign material in the well in one week of anti-flushing well, in the construction oil pipe, drop into steel ball from well head, steel ball is suppressed power from well mouth oil pipe after sinking to hanging packer 5, fluid pressure acts on the hanging packer 5, and it is set.Can pump into the stratum with mulling liquid through hanging packer 5 this moment from well head, after the stratum is crowded with, waits for pressure diffusion.Layer separating packer 8 is to meet oily swell packers, after setting the tubing string G.I.H, reacts with in-place oil in the sleeve pipe, and the packing element volume expansion realizes setting.
2, lower flow string
Forward construction oil pipe 11 is realized giving up, tripping out construction oil pipe 11 rear order by accompanying drawing 1 connects flow string successively on ground, design attitude in the lower going-into-well, when flow string is lowered into the Back-off Pipe String inner chamber, to note controlling well speed, just can go into the well afterwards to liquid controling pipe line 1 and hydraulic pressure lifting device 2 pressure testings are qualified.
3, layering production
Produce when needing layering production after the lower flow string completion, by 2 actions of ground hydraulic-control pipeline 1 pressurised driving hydraulic pressure lifting device, hydraulic pressure lifting device 2 shrinks according to the quantity of ground pressurization injection liquid force feed or upholds, flow string should have mutually the lifting of certain-length or transfer, make sealing plug 7 mutually make up different on off states with double-deck sand screen 6, realize the convertible oil production by layer of combination interval, reach the purpose of selecting the exploitation random layer.
The above only is preferred embodiment of the present utility model, and non-in order to limit claim of the present utility model, other use the equivalence of patent spirit of the present utility model to change, and all should all belong to claim of the present utility model.

Claims (5)

1. the ascending/decending separate-layer production string is characterized in that, comprises interconnective flow string and Back-off Pipe String, and described flow string comprises liquid controling pipe line, hydraulic pressure lifting device, production tube, oil well pump, the sealing plug that links together from top to bottom; Described Back-off Pipe String comprises hanging packer, double-deck sand screen, layer separating packer, described double-deck sand screen is arranged on the sealing plug outside, described hanging packer is arranged on the sealing plug upper end of oil well pump below, and described layer separating packer is arranged on the medium position of sealing plug and between two oil reservoirs.
2. ascending/decending separate-layer production string as claimed in claim 1 is characterized in that, described flow string bottom is provided with the guiding plug, and described Back-off Pipe String bottom is provided with the bottom plug.
3. ascending/decending separate-layer production string as claimed in claim 1 is characterized in that, described double-deck sand screen is that inner tube is provided with the tubular body of production channel design in the position at regular intervals; The sealing plug of described flow string is positioned at the double-deck sand screen of Back-off Pipe String, and the take off and landing strip movable sealing plug by flow string moves.
4. ascending/decending separate-layer production string as claimed in claim 1, it is characterized in that, described hydraulic pressure lifting device comprises central tube and the urceolus that is connected with central tube by connector, described central tube upper end outer hub hoop, described urceolus lower end and lower contact socket also are being provided with stopper between central tube and the urceolus.
5. ascending/decending separate-layer production string as claimed in claim 4 is characterized in that, described upper stopper is installed on the liquid controling pipe line connecting hole, and described central tube, upper stopper, urceolus all and between the connector are installed on O-ring seal.
CN 201220117994 2011-12-12 2012-03-27 Lift-type separate layer production string Expired - Fee Related CN202645512U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220117994 CN202645512U (en) 2011-12-12 2012-03-27 Lift-type separate layer production string

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201120514583 2011-12-12
CN201120514583.1 2011-12-12
CN 201220117994 CN202645512U (en) 2011-12-12 2012-03-27 Lift-type separate layer production string

Publications (1)

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CN202645512U true CN202645512U (en) 2013-01-02

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103161432A (en) * 2011-12-12 2013-06-19 中国石油化工股份有限公司 Lifting type layered oil production tubular column
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
CN110344789A (en) * 2019-06-28 2019-10-18 西南石油大学 One kind being suitable for offshore oilfield intelligence separate zone production device and control system
CN111101900A (en) * 2018-10-25 2020-05-05 中国石油化工股份有限公司 Oil well is supplementary exploitation instrument in pit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103161432A (en) * 2011-12-12 2013-06-19 中国石油化工股份有限公司 Lifting type layered oil production tubular column
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
CN111101900A (en) * 2018-10-25 2020-05-05 中国石油化工股份有限公司 Oil well is supplementary exploitation instrument in pit
CN110344789A (en) * 2019-06-28 2019-10-18 西南石油大学 One kind being suitable for offshore oilfield intelligence separate zone production device and control system
CN110344789B (en) * 2019-06-28 2021-12-21 周静 Intelligent layered mining device and control system suitable for offshore oil field

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130102

Termination date: 20140327