Recovery type whipstock set

A technology of oblique devices and inclined planes, which is applied in drilling equipment, drilling equipment and methods, and earthwork drilling and mining, etc. It can solve problems such as difficulty in affecting the fishing effect and clogging of cuttings in the center hole, so as to achieve high reliability and ensure successful construction , The effect of convenient construction

Inactive Publication Date: 2008-09-17
LIAOHE GASOLINEEUM EXPLORATION BUREAU
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a recoverable skewer device, which solves the problems in the prior art, such as wear of the hardened layer on the surface of the whipstock, blockage of drilling cuttings in the center hole, etc. The problem that it is difficult to align the fishing spear and the male cone to affect the fishing effect

Method used

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  • Recovery type whipstock set
  • Recovery type whipstock set

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Embodiment Construction

[0009] The retractable tilter device includes three parts: the tilter base, the tilter, and the tilter fishing mechanism:

[0010] exist figure 1 Among them, the base of the oblique device is composed of slips 1, seat cover 2, seat 3 and directional slope 4; put the slip 1 into the seat 3, the seat cover 2 and the seat 3 threaded connection, the slip seat 3 is threaded with the directional slope 4, the oblique device is composed of the oblique device body 5, the central hole 6, the recovery hole 7, and the oblique device tongue crown 8; Hole 6, recovery hole 7 (group 1-2) and oblique tongue crown 8 are provided on the upper end of the oblique device body 5, and the directional slope 4 and the inclined device base in the oblique device base are provided on the lower end of the oblique device body 5. Match to the seat cover 2;

[0011] exist figure 2 Among them, the fishing mechanism of the oblique device is composed of a guide body 9, a slope track 10, a fishing claw 11, a ...

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Abstract

The present invention relates to a recovery type whipstock equipment for oil field branch-well well-drilling and well completion operation. Said recovery type whipstock equipment includes the following three portions: whipstock base seat, whipstock and whipstock fishing mechanism. Said invention also provides the concrete structure of above-mentioned every portion and connection mode of all the above-mentioned portions. Besides, said invention also provides the application method of said recovery type whipstock equipment.

Description

Technical field: [0001] The invention relates to a recovery type skewer device for oil field branch well drilling and completion operations. Background technique: [0002] At present, branch well oil recovery technology in oilfield is a new drilling and completion technology that is rapidly emerging in the petroleum industry. It can significantly reduce the cost per ton of oil and maximize the recovery rate of oil and gas reservoirs. In recent years, this new technology has been greatly developed, and is widely used to improve the utilization of reserves, increase the production volume of oil and gas wells, and reduce the cost of oil and gas extraction. Using the skewer to open a window on the casing to sidetrack the lateral wellbore, and recovering the whipstock is one of the key technologies for drilling and completing the lateral well. At home and abroad, the center hole reserved in the whipstock is often used to salvage with slips, fishing spears, universal male cones a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/08
Inventor 王春杰李敬东陈振刚
Owner LIAOHE GASOLINEEUM EXPLORATION BUREAU
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