CN2864078Y - Isolating device for location of sub-well oblique machine - Google Patents
Isolating device for location of sub-well oblique machine Download PDFInfo
- Publication number
- CN2864078Y CN2864078Y CN 200520037411 CN200520037411U CN2864078Y CN 2864078 Y CN2864078 Y CN 2864078Y CN 200520037411 CN200520037411 CN 200520037411 CN 200520037411 U CN200520037411 U CN 200520037411U CN 2864078 Y CN2864078 Y CN 2864078Y
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- central tube
- packing element
- keyway
- model
- ball seat
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Abstract
The utility model relates to an oil-gas field sub-well drilling tool, especially an isolating device for location of sub-well oblique machine. The uitility model is mainly composed of an upper joint, a fixed ring, an inner cylinder, a reversing wheel, a center pipe, a ball seat mechanism, the upper slip element and the down slip element and a packer rubber. A hydraulic cavity is formed between the inner cylinder and the outer cylinder, a liquid flow hole is left on the inner cylinder, shear pins are set on between the pushing block and the center pipe, the upper end of the reversing wheel connects with the center pipe by the left lateral thread, the inferior part connects with the ball seat mechanism by thread, the packer rubber is set on the center cylinder, and the structures of the both ends of the packer rubber are the same, which are arranged in turn from the packer rubber outward as follows: a retaining ring, an aperture ring assorted by the rectangular keyway, a cone block, a slip element assorted with the cone block and slotted locally, the shear pins are filled in the space between the cone block and the center pipe. The utility model has the advantages of the easy operation, safe and reliable, and can provide the effective rigid support for the bottom of the oblique machine and achieve the complete seal of the annulus.
Description
Technical field
The utility model relates to oil gas field branch hole drilling power tool, particularly a kind of Multilateral Wells whipstock location packer.
Background technology
When Multilateral Wells is carried out the casing sidetracking operation, need provide a kind of support in the whipstock bottom, common employing is beaten this mode of ash plug and is reached this purpose.But, when utilizing this kind operating type, be difficult to guarantee to form good ash plug quality, will badly influence other follow-up operations like this; It is oversize perhaps to leave ash plug section in the well, need make a trip to bore to remove unnecessary ash plug.After the branch well hole finishing drilling, need to salvage whipstock, and bore the ash plug in the main borehole, cause complex procedures, may cause the generation of down hole problem.
Summary of the invention
The purpose of this utility model is to provide a kind of Multilateral Wells whipstock location packer, the seat envelope that expands by building the pressure provides positioning supports for whipstock, pass through the back-off deblocking after operation is finished and propose packer, so just need not risk fill in operation than the ash of beating of big complex procedures.
The utility model is mainly by top connection 1, retainer ring 2, inner core 4, back-off wheel 7, central tube 8, ball seat mechanism 10, on, lower slips 12,19, packing element 17, following fixed cover 21, pipe nipple 22 compositions such as grade, form hydraulic cavities between inner core 4 and the urceolus 3, leave liquid flow hole on the inner core 4, between pushing block 9 and the central tube 8 shear pin is housed, back-off is taken turns 7 upper ends and is connected for left hand thread with central tube 8, lower end and ball seat mechanism 10 are by being threaded, packing element 17 is arranged on the central tube 8, packing element about in the of 17 two-end structure identical, outwards be followed successively by back-up ring 16 from packing element 17, the split ring 14 that utilizes the rectangle keyway to cooperate, 15, awl piece 13, differential trench open and the slips that cooperates with 13 formation of awl piece, and between awl piece 13 and the central tube 8 shear pin 18 is housed.
The utlity model has advantages such as simple to operate, safe and reliable, can provide effective rigid support for the whipstock bottom, and can realize the sealing of annular space fully.
Description of drawings
Fig. 1 the utility model structural representation
Specific embodiments
The utility model is described in more detail below in conjunction with accompanying drawing.
The utility model is mainly by top connection 1, retainer ring 2, inner core 4, back-off wheel 7, central tube 8, ball seat mechanism 10, on, lower slips 12,19, packing element 17, following fixed cover 21, pipe nipple 22 compositions such as grade, form hydraulic cavities between inner core 4 and the urceolus 3, leave liquid flow hole on the inner core 4, between pushing block 9 and the central tube 8 shear pin is housed, back-off is taken turns 7 upper ends and is connected for left hand thread with central tube 8, lower end and ball seat mechanism 10 are by being threaded, packing element 17 is arranged on the central tube 8, packing element about in the of 17 two-end structure identical, outwards be followed successively by back-up ring 16 from packing element 17, the split ring 14 that utilizes the rectangle keyway to cooperate, 15, awl piece 13, differential trench open and the slips that cooperates with 13 formation of awl piece, and between awl piece 13 and the central tube 8 shear pin 18 is housed.As optimal way of the present utility model, design has rotation-preventing mechanism between central tube 8 and the lower slips 19, in the appropriate position of central tube 8 external surfaces keyway is arranged, and also has on the lower slips 19 to form the keyway that cooperates with it, and flat key 20 is contained in corresponding keyway place.The utility model operating principle is as follows: with this novel bottom of sending into drilling tool that is connected, when this instrument during down to the precalculated position, (if not prefabricated ball builds the pressure in the pipe, then carry out the well head pitching earlier), at first cut off the shear pin on the pushing block 9 this moment, in the descending process of pushing block, cut off in the awl piece and the shearing between the central tube above the packing element, lower slips 19 is the main tight layer internal surface of sleeve pipe of card under the effect of boring piece down and fully, packing element 17 is expanded to and is adjacent to the upper strata internal surface of sleeve pipe fully then, and last upper slips 12 tightens the upper strata internal surface of sleeve pipe fully.At this moment, just the suitable number of turns of tube post is totally released the left-hand thread between central tube 8 and the back-off wheel 7, and this moment, the upper lifting pipe post can propose originally novel running tool part fully.
Claims (2)
1. a Multilateral Wells whipstock is located and is used packer, mainly by top connection (1), retainer ring (2), inner core (4), back-off wheel (7), central tube (8), ball seat mechanism (10), on, lower slips (12,19), packing element compositions such as (17), it is characterized in that: form hydraulic cavities between inner core (4) and the urceolus (3), inner core leaves liquid flow hole on (4), between pushing block (9) and the central tube (8) shear pin is housed, back-off wheel (7) upper end is connected for left hand thread with central tube (8), lower end and ball seat mechanism (10) are by being threaded, packing element (17) is arranged on the central tube (8), two-end structure is identical up and down for packing element (17), outwards be followed successively by back-up ring (16) from packing element (17), the split ring (14 that utilizes the rectangle keyway to cooperate, 15), awl piece (13), differential trench open and the slips that cooperates with awl piece (13) formation, and between awl piece (13) and the central tube (8) shear pin (18) is housed.
2. a kind of Multilateral Wells whipstock according to claim 1 location packer, it is characterized in that: between central tube (8) and the lower slips (19) rotation-preventing mechanism is arranged, there is keyway appropriate position at central tube (8) external surface, also have on the lower slips (19) to form the keyway that cooperates with it, flat key (20) is contained in corresponding keyway place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520037411 CN2864078Y (en) | 2005-12-16 | 2005-12-16 | Isolating device for location of sub-well oblique machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520037411 CN2864078Y (en) | 2005-12-16 | 2005-12-16 | Isolating device for location of sub-well oblique machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2864078Y true CN2864078Y (en) | 2007-01-31 |
Family
ID=37676531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520037411 Expired - Lifetime CN2864078Y (en) | 2005-12-16 | 2005-12-16 | Isolating device for location of sub-well oblique machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2864078Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705800B (en) * | 2009-11-18 | 2012-07-04 | 东营百华石油技术开发有限公司 | Anti-falling hanging device |
| CN112483041A (en) * | 2019-09-12 | 2021-03-12 | 中国石油化工股份有限公司 | Bridge plug matched with branch well |
-
2005
- 2005-12-16 CN CN 200520037411 patent/CN2864078Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101705800B (en) * | 2009-11-18 | 2012-07-04 | 东营百华石油技术开发有限公司 | Anti-falling hanging device |
| CN112483041A (en) * | 2019-09-12 | 2021-03-12 | 中国石油化工股份有限公司 | Bridge plug matched with branch well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| 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 |
|
| 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 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20070131 |
|
| EXPY | Termination of patent right or utility model |