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Release device

A technology of releasing device and pushing device, applied in drilling equipment, wellbore/well components, earth-moving drilling, etc., can solve the problem that the drill bit cannot be released, etc.

Inactive Publication Date: 2013-05-22
WELLTEC AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, if the power pack is stuck, then the bit cannot be released

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0042] figure 1 One embodiment of a downhole system 1 comprising a drill bit 2 and a drive unit 7 for rotating the drill bit 2 is shown. Between the drive unit 7 and the drill head 2 , the system 1 comprises a control unit 6 , a fluid cleaner 5 , a pump 4 and a release device 3 according to the invention.

[0043] The drive unit 7 can be any type of motor, preferably an electric motor powered by a cable 8 . The drill bit 2 is driven by the drive unit 7 to rotate at a certain speed and a certain weight-on-bit (WOB), so that the longitudinal displacement (velocity) of the bit edge 10 towards, for example, the formation 9 remains constant during drilling.

[0044] The motor 7 has a shaft for driving the drill 2 . The shaft can be connected to the drill bit 2 via a gear connection. In this way, one drill bit 2 can be replaced by another drill bit 2 .

[0045] A control unit 6 is powered by a motor 7 to control the drilling process, and the control unit communicates with the su...

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PUM

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Abstract

A downhole system including a driving unit for driving an operational tool. The driving unit is provided in a first part of the system and the operational tool is provided in a second part of the system. The system further includes a release device for releasing the operational tool and the second part from the first part of the system.

Description

technical field [0001] The present invention relates to a downhole system for performing downhole operations such as drilling a well in a downhole formation. The system extends longitudinally and includes a driving unit arranged in a first part of the system for driving an operating tool, an operating tool arranged in a second part of the system for performing downhole operations, and an operating tool arranged in the system Release means in the first part for releasing the first part from the second part. Background technique [0002] Downhole systems are used when performing downhole operations such as drilling wells in subterranean formations, cleaning wells, and the like. A downhole system consists of a number of tools specific to the operation to be performed. Even if a downhole system is manufactured for a specific operation, certain tools may be reused for other operations. [0003] One type of downhole system is a drilling system that includes a drilling tool with...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B10/62
CPCE21B23/01E21B17/06E21B10/62
Inventor J·哈伦德巴克P·格拉贝克
Owner WELLTEC AS