CN108278095A - A kind of piston reciprocating type exempts to bore plug stage cementing device - Google Patents

A kind of piston reciprocating type exempts to bore plug stage cementing device Download PDF

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Publication number
CN108278095A
CN108278095A CN201810215720.8A CN201810215720A CN108278095A CN 108278095 A CN108278095 A CN 108278095A CN 201810215720 A CN201810215720 A CN 201810215720A CN 108278095 A CN108278095 A CN 108278095A
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CN
China
Prior art keywords
piston
control
stage cementing
hydraulic fluid
fluid chamber
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Application number
CN201810215720.8A
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Chinese (zh)
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CN108278095B (en
Inventor
姜建平
梁辰
林安国
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.)
Petroleum Engineering Technology Research Institute Of Hanjiang Oil Field Branch Sinopec
China Petroleum and Chemical Corp
Original Assignee
Petroleum Engineering Technology Research Institute of Sinopec Jianghan Oilfield Co
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Priority to CN201810215720.8A priority Critical patent/CN108278095B/en
Publication of CN108278095A publication Critical patent/CN108278095A/en
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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/10Sealing or packing boreholes or wells in the borehole
    • E21B33/13Methods or devices for cementing, for plugging holes, crevices, or the like

Abstract

The invention discloses a kind of piston reciprocating types to exempt to bore plug stage cementing device, including top connection, control device, casing nipple, piston bush component, the lower contact set gradually from top to bottom, piston, dynamic sealing between the piston and piston bush component are equipped in piston bush component, it is characterised in that:Hydraulic fluid chamber is equipped in the control device, the piston bush is externally provided with pressure tube, piston upper chamber and piston cavity of resorption are equipped between the piston and piston bush component, the pressure tube is equipped with several channels, it is respectively communicated with hydraulic fluid chamber and piston upper chamber and control sap cavity and piston cavity of resorption, the control device is used to control the hydraulic oil in hydraulic fluid chamber, and the action of piston is driven by pressure tube.The present invention can reduce rubber plug input, without by hydraulic cutter pin switching channels, avoiding uncertain existing for down-hole pressure control cutting pin.Without boring plug after well cementation, realizes tubing string full-bore, reduce operating risk.

Description

A kind of piston reciprocating type exempts to bore plug stage cementing device
Technical field
The present invention relates to a kind of oil gas field well cementation completion downhole tools more particularly to a kind of piston reciprocating type to exempt to bore plug classification Cementing device.
Background technology
In deep-well, long cementing interval well, Absorption Wells of Low Pressure well cementation completion, conventional cementing technology be difficult to meet geologic requirements and Ensure cementing quality, it is stage cementing device often to use fraclional well cementing technology, key tool.Common mechanical and hydraulic pressure Formula stage cementing device needs to beat by hydraulic cutter pin (wherein mechanical stage cementing device will also first put into gravity plug) Open cycle hole carries out two level well cementation, needs input shut-off plug to be closed by hydraulic cutter pin after completing two level well cementation and recycles Hole needs to employ later small drilling tool brill except internal structure, and operating risk is high;Drilling-free sizing cementing device glue after completing to cement the well Plug and attachment fall well automatically, can save small drilling tool for well and drilling machine holding time, reduction operating risk, but there are glue for the prior art Plug and attachment fall the unsuccessful problem of well, cause utilization rate low.
Invention content
Technical problem to be solved by the present invention lies in providing in view of the deficiency of the prior art, a kind of piston is past Compound to exempt to bore plug stage cementing device, which can reduce rubber plug input, be opened without passing through hydraulic cutter pin Channel is closed, without boring plug after well cementation, tubing string full-bore is realized, reduces operating risk.
The technical solution adopted in the present invention is:A kind of piston reciprocating type exempts to bore plug stage cementing device, including from up to Under the top connection, control device, casing nipple, piston bush component, the lower contact that set gradually, be equipped with and live in piston bush component Plug, dynamic sealing between the piston and piston bush component, it is characterised in that:Hydraulic fluid chamber is equipped in the control device, it is described Piston bush is externally provided with pressure tube, and piston upper chamber and piston cavity of resorption, the pressure tube are equipped between the piston and piston bush component Equipped with several channels, it is respectively communicated with hydraulic fluid chamber and piston upper chamber and hydraulic fluid chamber and piston cavity of resorption, the control device is used Hydraulic oil in control hydraulic fluid chamber, the action of piston is driven by pressure tube.
According to the above technical scheme, the piston bush component include from top to bottom sequentially connected upper seal support, pressure-bearing set, open Hole set, bottom sealing socket, the upper seal support are connected with casing nipple, and bottom sealing socket is connect with lower contact, and the pressure-bearing is covered and lived Piston upper chamber and piston cavity of resorption are equipped between plug.
According to the above technical scheme, it is equipped with radial aperture on trepanning set and piston.
According to the above technical scheme, the control device includes control set, pressure sensor, control circuit, reversal valve, driving Mechanism, the control circuit control commutation valve events, and the hydraulic oil controlled in driving mechanisms control hydraulic fluid chamber enters piston Epicoele or piston cavity of resorption.
According to the above technical scheme, two level obturating plug is equipped in top connection, by being connect inside screw thread and top connection, described two Grade obturating plug uses split structure or monolithic construction.
According to the above technical scheme, the two level obturating plug uses split structure, including connector sleeve and secondary seal seat, described It is connect inside connector sleeve and top connection, the secondary seal seat is made of can dissolve material.
According to the above technical scheme, it is equipped with fixed ring between lower contact and piston bush, is equipped with outside level-one and fills in fixed ring.
According to the above technical scheme, the fixed ring is made of can dissolve material.
According to the above technical scheme, a part or entirety and fixed ring for two level obturating plug is made of soluble material, is led to Soluble media is crossed to be dissolved.
It is obtained by the present invention to have the beneficial effect that:
1, the present invention by the pressure signal that ground is sent it is not necessary that by hydraulic cutter pin switching channels, it is dynamic to control piston Make, avoids down-hole pressure control and cut uncertainty existing for pin.
2, reduce the input of gravity plug.
3, it removes rubber plug by modes such as dissolvings and is fixedly connected with mechanism, realize full-bore, avoid brill plug risk.
Description of the drawings
Fig. 1 is the structure chart of the present invention.
Fig. 2 is the structural schematic diagram filled in level-one in the present invention.
Fig. 3 is the structural schematic diagram of two level bruising plug in the present invention.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings.
Exempt to bore plug stage cementing device as shown in Figure 1, present embodiments providing a kind of piston reciprocating type, including from top to bottom Top connection 1, control device, casing nipple 7, piston bush component, the lower contact 17 set gradually is equipped in piston bush component and lives Plug 11 is equipped with two level obturating plug in top connection 1, and by being connect inside screw thread and top connection, the two level obturating plug is using split type Structure or monolithic construction.Dynamic sealing between the piston 11 and piston bush component, the control device is interior to be equipped with hydraulic fluid chamber 18, the piston bush is externally provided with pressure tube 9, and piston upper chamber 19 and piston upper chamber 20 are equipped between the piston 11 and piston bush, The pressure tube 9 is equipped with several channels, is respectively communicated under hydraulic fluid chamber 18 and piston upper chamber 19 and hydraulic fluid chamber 18 and piston Chamber 20, the control device are used to control the hydraulic oil in hydraulic fluid chamber 18, and the action of piston 11 is driven by pressure tube 9.Its In, control device is connect by pipe fitting 8, pressure tube 9 with piston bush component.
The piston bush component include from top to bottom sequentially connected upper seal support 10, pressure-bearing set 12, trepanning set 13, under it is close Seal seat 14, the upper seal support 10 is connected with casing nipple 7, and bottom sealing socket 14 is connect with lower contact 17, the pressure-bearing cover 12 and Piston upper chamber 19 and piston cavity of resorption 20 are equipped between piston 11.It is equipped with radial aperture 21 on trepanning set 13, is set on piston 11 There is radial aperture 22.
The control device includes control set 5, pressure sensor 4, control circuit, reversal valve, driving mechanism 6, the control Circuit control processed commutates valve events, and control the hydraulic oil that driving mechanism 6 controls in hydraulic fluid chamber 18 enter piston upper chamber 19 or Piston cavity of resorption 20.Wherein, pressure sensor 4 is installed in the upper end of hydraulic fluid chamber 18, and pressure sensor 4, which receives, comes from ground installation The fluid pressure signal of output, control circuit analysis output control signal, controls driving mechanism and reversal valve controls hydraulic fluid chamber Hydraulic oil in 18 drives piston 11 to act by pressure tube 9.
In the present embodiment, the two level obturating plug uses split structure, including connector sleeve 2 and secondary seal seat 3, the company It is connected through a screw thread inside female connector 2 and top connection 1.Fixed ring 15 is equipped between lower contact 17 and bottom sealing socket 14, in fixation It is equipped with outside level-one in ring 15 and fills in 16.Wherein, the secondary seal seat 3 and fixed ring 15 are made of soluble material, can be passed through Soluble media is dissolved, and can also be bored except extremely close to casing inner diameter.
The present invention is connected on solid completion tubular string, and G.I.H precalculated position as required;Level-one cementing is completed to make After industry, 23 are filled in out of well head input level-one, replacement, 23 downlinks of the interior plug of level-one are compound with plug 16 outside level-one after in place, fall to one Grade obturating plug and bruising;It replaces into precalculated position below insulating liquid to the present invention;Ground sends fluid pressure signal, controls on piston Row is opened two level cementing channel (radial aperture 21 is connected to radial aperture 22);After completing two level cementing job, from well head Two level bruising plug 24 is put into, is replaced, two level bruising plug 24 comes downwards to secondary seal seat 3 and bruising;Ground sends fluid pressure letter Number, it controls descent of piston, closes two level cementing channel (radial aperture 21 and radial aperture 22 are staggered, and lose connection);From ground Face-pumping enters dissolving medium, and secondary seal seat 3 and fixed ring 15 are dissolved;Plug is swept, makes pit shaft internal diameter close to casing inner diameter.

Claims (9)

1. a kind of piston reciprocating type exempt from bore plug stage cementing device, including set gradually from top to bottom top connection, control device, Casing nipple, piston bush component, lower contact are equipped with piston in piston bush component, are moved between the piston and piston bush component Sealing, it is characterised in that:Be equipped with hydraulic fluid chamber in the control device, the piston bush is externally provided with pressure tube, the piston with Piston upper chamber and piston cavity of resorption are equipped between piston bush component, the pressure tube is equipped with several channels, is respectively communicated with hydraulic fluid chamber With piston upper chamber and hydraulic fluid chamber and piston cavity of resorption, the control device is used to control the hydraulic oil in hydraulic fluid chamber, pass through Pressure tube drives the action of piston.
2. stage cementing device according to claim 1, it is characterised in that:The piston bush component include from top to bottom according to Upper seal support, pressure-bearing set, trepanning set, the bottom sealing socket of secondary connection, the upper seal support are connected with casing nipple, bottom sealing socket with Lower contact connects, and piston upper chamber and piston cavity of resorption are equipped between the pressure-bearing set and piston.
3. stage cementing device according to claim 2, it is characterised in that:Radial open is equipped on trepanning set and piston Hole.
4. stage cementing device according to claim 1 or 2, it is characterised in that:The control device includes control set, pressure Force snesor, control circuit, reversal valve, driving mechanism, the control circuit control commutation valve events, and control driving mechanism control Hydraulic oil in hydraulic fluid chamber processed enters piston upper chamber or piston cavity of resorption.
5. stage cementing device according to claim 1 or 2, it is characterised in that:It is equipped with two level obturating plug in top connection, leads to It crosses inside screw thread and top connection and connect, the two level obturating plug uses split structure or monolithic construction.
6. stage cementing device according to claim 5, it is characterised in that:The two level obturating plug uses split structure, It including connector sleeve and secondary seal seat, is connect inside the connector sleeve and top connection, the secondary seal seat is using dissolvable material Matter is made.
7. stage cementing device according to claim 1 or 2, it is characterised in that:It is equipped between lower contact and piston bush Fixed ring is equipped with outside level-one in fixed ring and fills in.
8. stage cementing device according to claim 7, it is characterised in that:The fixed ring is using the material system of can dissolve At.
9. stage cementing device according to claim 5, it is characterised in that:The part of two level obturating plug or it is whole and Fixed ring is made of soluble material, is dissolved by soluble media.
CN201810215720.8A 2018-03-15 2018-03-15 Piston reciprocating type drilling-free plug stage cementing device Active CN108278095B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810215720.8A CN108278095B (en) 2018-03-15 2018-03-15 Piston reciprocating type drilling-free plug stage cementing device

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Application Number Priority Date Filing Date Title
CN201810215720.8A CN108278095B (en) 2018-03-15 2018-03-15 Piston reciprocating type drilling-free plug stage cementing device

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CN108278095B CN108278095B (en) 2024-04-02

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112177565A (en) * 2020-09-27 2021-01-05 德州众凯石油科技有限公司 Salvaging type drilling-plug-free cementing well completion device
CN114109299A (en) * 2020-08-27 2022-03-01 中国石油化工股份有限公司 Stage cementing device and method for top cementing

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6497291B1 (en) * 2000-08-29 2002-12-24 Halliburton Energy Services, Inc. Float valve assembly and method
CN201206452Y (en) * 2008-03-10 2009-03-11 周华安 Oil and gas well sleeve pipe and oil conduit clogging device for preventing blowout
CN201236664Y (en) * 2008-07-04 2009-05-13 李熠 Special shaft mouth apparatus of thick oil thermal production well
CN101691834A (en) * 2009-05-20 2010-04-07 胜利油田利丰稠油技术开发有限公司 Inner tube-free drillable-retrievable grading cementing well completion technology
CN101701513A (en) * 2009-11-04 2010-05-05 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 Drilling-plug free tubular column with sand control and well cementation for open-hole horizontal well
CN104088601A (en) * 2014-06-30 2014-10-08 中国海洋石油总公司 Channeling sealing tool for outer packer of cement paste filled pipe
CN104088599A (en) * 2014-06-30 2014-10-08 中国海洋石油总公司 Expansion bridge blinding method for outer packer of cement paste filled pipe
CN206769870U (en) * 2017-03-23 2017-12-19 中石化石油工程技术服务有限公司 Small size is exempted to bore plug completion tool
CN208122819U (en) * 2018-03-15 2018-11-20 中国石油化工股份有限公司江汉油田分公司石油工程技术研究院 A kind of piston reciprocating type exempts to bore plug stage cementing device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6497291B1 (en) * 2000-08-29 2002-12-24 Halliburton Energy Services, Inc. Float valve assembly and method
CN201206452Y (en) * 2008-03-10 2009-03-11 周华安 Oil and gas well sleeve pipe and oil conduit clogging device for preventing blowout
CN201236664Y (en) * 2008-07-04 2009-05-13 李熠 Special shaft mouth apparatus of thick oil thermal production well
CN101691834A (en) * 2009-05-20 2010-04-07 胜利油田利丰稠油技术开发有限公司 Inner tube-free drillable-retrievable grading cementing well completion technology
CN101701513A (en) * 2009-11-04 2010-05-05 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 Drilling-plug free tubular column with sand control and well cementation for open-hole horizontal well
CN104088601A (en) * 2014-06-30 2014-10-08 中国海洋石油总公司 Channeling sealing tool for outer packer of cement paste filled pipe
CN104088599A (en) * 2014-06-30 2014-10-08 中国海洋石油总公司 Expansion bridge blinding method for outer packer of cement paste filled pipe
CN206769870U (en) * 2017-03-23 2017-12-19 中石化石油工程技术服务有限公司 Small size is exempted to bore plug completion tool
CN208122819U (en) * 2018-03-15 2018-11-20 中国石油化工股份有限公司江汉油田分公司石油工程技术研究院 A kind of piston reciprocating type exempts to bore plug stage cementing device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114109299A (en) * 2020-08-27 2022-03-01 中国石油化工股份有限公司 Stage cementing device and method for top cementing
CN114109299B (en) * 2020-08-27 2024-04-19 中国石油化工股份有限公司 Stage cementing device for top cementing and method thereof
CN112177565A (en) * 2020-09-27 2021-01-05 德州众凯石油科技有限公司 Salvaging type drilling-plug-free cementing well completion device
CN112177565B (en) * 2020-09-27 2021-05-14 德州众凯石油科技有限公司 Salvaging type drilling-plug-free cementing well completion device

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Effective date of registration: 20191227

Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No.

Applicant after: CHINA PETROLEUM & CHEMICAL Corp.

Applicant after: PETROLEUM ENGINEERING TECHNOLOGY Research Institute OF HANJIANG OIL FIELD BRANCH SINOPEC

Address before: 430035 Hubei city of Wuhan province Gutian two Road No. 37 HSBC Nanniwan Avenue headquarters block fifth B

Applicant before: PETROLEUM ENGINEERING TECHNOLOGY Research Institute OF HANJIANG OIL FIELD BRANCH SINOPEC

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