CN2881074Y - Filling tool of pipe external packer - Google Patents

Filling tool of pipe external packer Download PDF

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Publication number
CN2881074Y
CN2881074Y CN 200520136458 CN200520136458U CN2881074Y CN 2881074 Y CN2881074 Y CN 2881074Y CN 200520136458 CN200520136458 CN 200520136458 CN 200520136458 U CN200520136458 U CN 200520136458U CN 2881074 Y CN2881074 Y CN 2881074Y
Authority
CN
China
Prior art keywords
central tube
baffle plate
cylinder
central
tube
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 - Lifetime
Application number
CN 200520136458
Other languages
Chinese (zh)
Inventor
胡国强
杨道平
翟亚锋
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.)
Karamay Drilling Technology Institute of CNPC Western Drilling Engineering Co Ltd
Original Assignee
Drilling Technology Research Institute of Xinjiang Petroleum Administration
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 Drilling Technology Research Institute of Xinjiang Petroleum Administration filed Critical Drilling Technology Research Institute of Xinjiang Petroleum Administration
Priority to CN 200520136458 priority Critical patent/CN2881074Y/en
Application granted granted Critical
Publication of CN2881074Y publication Critical patent/CN2881074Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to an external casing packer filling tool. The upper part of a central tube is provided with external steps, with an upper rubber cylinder, an upper baffle plate, a lower baffle plate and a supporting cylinder covered in turns. The upper and lower baffle plates are fixedly connected by threads, the supporting cylinder is fixed on the central tube with a pin bolt, the lower rubber cylinder is covered on the supporting cylinder, a central blind hole is arranged on the lower baffle plate, with off-setting spring provided inside, the lower end leans against the supporting cylinder, the supporting cylinder is connected with the rubber plug base and the lower joints in turn, the lower part of the central tube is connected with an adapter, a spring is equipped between the adapter and the step in the rubber plug base, a hydraulic cylinder is fastened between the upper baffle plate and the central tube by the pin bolt, an off-setting spring is provided between the hydraulic cylinder and the upper baffle plate, the central blind hole on the lower part of the hydraulic cylinder and the central tube form a hydraulic chamber, a liquid flow through hole is equipped on the central tube corresponding to the hydraulic chamber and the corresponding baffle plate is also equipped with a liquid flow through hole. The utility model utilizes the deformation of the rubber cylinder to realize sealing. As the outer diameter of the required rubber cylinder is smaller than the well completion pipe column, when put into water, the sealing components can not be damaged due to the friction produced and the sealing effects can not be influenced.

Description

The external packer of pipe packing tool
Technical field
The utility model relates to exploitation of oil-gas field horizontal well drilling completion tool, particularly a kind of external packer of pipe packing tool.
Background technology
The completion mode of horizontal well is mainly cutting seam sieve tube completion, well cementation completion and barefoot completion.From the back oil recovery condition of production of going into operation; the effect that the application level well development can obtain in fractured reservoir; but the horizontal well that adopts the cutting seam sieve tube completion merely occurs through regular meeting causing early stage stopping production of horizontal well to be scrapped thus owing to cross that early leaving but can't be tested, the situation of shutoff.The cementing well completion can satisfy acid fracturing and carry out the requirement that interlayer is separated shutoff gas cut water enchroachment (invasion), but cause the obstruction in crack easily at low pressure leakiness and fractured reservoir, thereby greatly reduce the oil pump capacity of intrinsic fracture oil reservoir, particularly low yield poor efficiency oil field is not suitable for adopting this method.Barefoot completion be only applicable to indivedual conditions better, do not have water enchroachment (invasion), need not acid fracturing, the horizontal well of hole stability.Facts have proved that adopt slot (or punching) screen casing to add the completion mode of multistage external packer of pipe, i.e. the horizontal well completion mode of sectional control is a kind of optimal way of horizontal well completion.In the horizontal well completion of sectional control, after completion tubular column is lowered to, need the filling of realization to the multiple valve external packer.No matter packing tool commonly used at present is leather cup formula or packing element formula, and the outside dimension of its sealing cup or packing element is all suitable substantially with the internal diameter size for the treatment of the filling tubing string, after putting in place under the packing tool, promptly carries out packing job.In actual use, because packing tool is lowered to the friction between process seal and the completion tubular column, it is damaged to make that rubber parts occurs, and influences its sealing performance.
Summary of the invention
For addressing the above problem, the utility model provides a kind of external packer of pipe packing tool.
The utility model is mainly by last box cupling 1, block 2, on, lower rubber cylinder 3,11, on, lower baffle plate 6,9, central tube 4, plug seat 15, following box cupling 17 and sealing ring, compositions such as spring, one outer step is arranged at central tube 4 tops, the step next coming in order are set with packing element 3, on, lower baffle plate 6,9, support tube 12, wherein go up, lower baffle plate 6, adopt screw thread fixedly connected between 9, support tube 12 usefulness pins 10 are fixed on the central tube 4, lower rubber cylinder 11 is sleeved on the support tube 12, lower baffle plate 9 inner chambers have central blind hole, back-moving spring 10 is positioned at this hole, its lower end leans against on the end face of support tube 12, support tube 12 lower ends and plug seat 15, lower contact 17 connects successively, central tube 4 bottoms link to each other with crossover sub 14, between the step spring 16 are housed in crossover sub 14 and the plug seat 15; In the annular space of overhead gage 6 and central tube 4 fluid cylinder 8 is arranged, pin 7 is fixed on fluid cylinder on the overhead gage 6, between fluid cylinder 8 and the overhead gage 6 back-moving spring 5 is housed, the central blind hole of fluid cylinder 8 bottoms and central tube 4 form a hydraulic cavities, central tube 4 corresponding hydraulic cavities positions have a liquid opening, and the liquid opening is also arranged on the relevant position overhead gage 6.
Advantage of the present utility model is: utilize the downforce of tubing string to make the rubber tube distortion realize the annular space packing, and control the opening and closing of pack hole by building the pressure, because the rubber tube external diameter that seals is less than the internal diameter of completion tubular column, rubber tube does not contact with tubing string in the well in the process so be lowered to, and can guarantee that rubber tube goes into the sealing effectiveness of well after in place.
Description of drawings
Fig. 1 the utility model structural representation
The specific embodiment
The utility model is described in more detail below in conjunction with accompanying drawing.
As shown in Figure 1, the utility model is mainly by last box cupling 1, block 2, on, lower rubber cylinder 3,11, on, lower baffle plate 6,9, central tube 4, plug seat 15, following box cupling 17 and sealing ring, compositions such as spring, one outer step is arranged at central tube 4 tops, the step next coming in order are set with packing element 3, on, lower baffle plate 6,9, support tube 12, these parts all can endwisely slip along central tube, wherein go up, lower baffle plate 6, adopt screw thread fixedly connected between 9, support tube 12 usefulness pins 10 are fixed on the central tube 4, lower rubber cylinder 11 is sleeved on the support tube 12, lower baffle plate 9 inner chambers have central blind hole, back-moving spring 10 is positioned at this hole, its lower end leans against on the end face of support tube 12, support tube 12 lower ends and plug seat 15, lower contact 17 connects successively, central tube 4 bottoms link to each other with crossover sub 14, between the step spring 16 are housed in crossover sub 14 and the plug seat 15; In the annular space of overhead gage 6 and central tube 4 fluid cylinder 8 is arranged, pin 7 is fixed on fluid cylinder on the overhead gage 6, between fluid cylinder 8 and the overhead gage 6 back-moving spring 5 is housed, the central blind hole of fluid cylinder 8 bottoms and central tube 4 form a hydraulic cavities, central tube 4 corresponding hydraulic cavities positions have a liquid opening, and the liquid opening is also arranged on the relevant position overhead gage 6.Above-mentioned all can between the parts of relative motion sealing ring be housed all.
Operating principle of the present utility model: with the utility model upper end with send into tubing string and be connected, the lower end links to each other with orientation tool, after the orientation tool realization is located, press down tubing string, under this load, central tube 4 moves down, cut off shear pin 13, upper and lower packing element 3,11 expands successively, realizes the annular space sealing.Build the pressure then, pin 7 is cut off, and fluid cylinder 8 moves up, back-moving spring 5 is compressed, and meanwhile, the liquid opening on the overhead gage 6 exposes, set up fluid course with the liquid opening on the central tube 4, utilize this fluid course that external packer of pipe is carried out packing job then.After packing job finished, under the effect of back-moving spring 5, fluid cylinder 8 resetted, and the liquid opening on the overhead gage 6 is blocked, and closes fluid course.The upper lifting pipe post, packing element returns to original shape owing to lost the effect of time compressive load.

Claims (1)

1. external packer of pipe packing tool, mainly by last box cupling (1), block (2), on, lower rubber cylinder (3,11), on, lower baffle plate (6,9), central tube (4), plug seat (15), following box cupling (17) and sealing ring, spring is formed, it is characterized in that: an outer step is arranged at central tube (4) top, the step next coming in order are set with packing element (3), on, lower baffle plate (6,9), support tube (12), on, lower baffle plate (6,9) adopt screw thread fixedly connected, support tube (12) is fixed on the central tube (4) with pin (10), lower rubber cylinder (11) is sleeved on the support tube (12), lower baffle plate (9) inner chamber has central blind hole, back-moving spring (10) is positioned at this hole, its lower end leans against on the upper surface of support tube (12), support tube (12) lower end and plug seat (15), lower contact (17) connects successively, central tube (4) bottom links to each other with crossover sub (14), between crossover sub (14) and the interior step of plug seat (15) spring (16) is housed; In the annular space of overhead gage (6) and central tube (4) fluid cylinder (8) is arranged, pin (7) is fixed on fluid cylinder (8) on the overhead gage (6), between fluid cylinder (8) and the overhead gage (6) back-moving spring (5) is housed, the central blind hole of fluid cylinder (8) bottom and central tube (4) form a hydraulic cavities, the corresponding hydraulic cavities of central tube (4) position has a liquid opening, and the relevant position overhead gage also has the liquid opening on (6).
CN 200520136458 2005-11-29 2005-11-29 Filling tool of pipe external packer Expired - Lifetime CN2881074Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200520136458 CN2881074Y (en) 2005-11-29 2005-11-29 Filling tool of pipe external packer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200520136458 CN2881074Y (en) 2005-11-29 2005-11-29 Filling tool of pipe external packer

Publications (1)

Publication Number Publication Date
CN2881074Y true CN2881074Y (en) 2007-03-21

Family

ID=37880914

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200520136458 Expired - Lifetime CN2881074Y (en) 2005-11-29 2005-11-29 Filling tool of pipe external packer

Country Status (1)

Country Link
CN (1) CN2881074Y (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103821479A (en) * 2014-02-17 2014-05-28 康庆刚 Device not pressing oil reservoir during thermal washing of mechanical producing well
CN107208470A (en) * 2015-02-17 2017-09-26 哈利伯顿能源服务公司 Grid seal pack device assembly and other downhole tools

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103821479A (en) * 2014-02-17 2014-05-28 康庆刚 Device not pressing oil reservoir during thermal washing of mechanical producing well
CN103821479B (en) * 2014-02-17 2016-05-18 康庆刚 The device of force feed layer function not while thering is well hot washing
CN107208470A (en) * 2015-02-17 2017-09-26 哈利伯顿能源服务公司 Grid seal pack device assembly and other downhole tools
CN107208470B (en) * 2015-02-17 2020-11-13 哈利伯顿能源服务公司 Lattice seal packer assembly and other downhole tools

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20081212

Address after: Hongyan Karamay Road, the Xinjiang Uygur Autonomous Region No. 80, zip code: 834000

Patentee after: Western Drilling Kelamayi Drilling Technology Institute

Address before: Hongyan Karamay Road, the Xinjiang Uygur Autonomous Region No. 80, zip code: 834000

Patentee before: Research Inst of Drilling Technology, Xinjiang Petroleum Administration

C41 Transfer of patent application or patent right or utility model
ASS Succession or assignment of patent right

Owner name: WEST DRILLING KARAMAY DRILLING CRAFT RESEARCH INST

Free format text: FORMER OWNER: DRILLING WELL TECHNOLOGY INSTITUTE, PETROLEUM ADMINISTRATION BUREAU, XINJIANG

Effective date: 20081212

EXPY Termination of patent right or utility model
CX01 Expiry of patent term

Granted publication date: 20070321