Novel electric downhole tool cutter

A technology for electric wells and cutters, which is applied in drilling equipment, wellbore/well components, and automatic control systems for drilling, etc., can solve the problems of low operation precision and complicated operation, and achieve the effect of strong adaptability

Inactive Publication Date: 2020-10-02
HELI TECH ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to overcome the problems of complex operation and low operation precision in traditional downhole cutters

Method used

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  • Novel electric downhole tool cutter
  • Novel electric downhole tool cutter

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Experimental program
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Effect test

Embodiment Construction

[0017] A new electric downhole tool cutter of the present invention is composed of a rotating housing 9 connected to the lower end of the fixed housing 1, a bearing 8 is installed at the joint, and a traction rope 28 is hinged with the top of the fixed housing 1, responsible for the entire Cutter hoisting operation down.

[0018] A fixed motor 2 and a rotary motor 7 are fixed sequentially from top to bottom in the fixed housing 1 .

[0019] The output shaft of the fixed motor 2 is matched with the rounded truncated wedge 4 threads, the circumference of the rounded truncated wedge 4 is provided with an anchor body 6, and the groove at the tail end of the anchor body 6 is embedded with an elastic body 5, and the elastic body 5 can be Bubble air bag is used to buffer the impact force when the anchor body 6 is locked with the casing; the inner surface of the elastic body 5 is against the circumference of the rounded frustum-shaped wedge 4, and the anchor body 6 is provided on the ...

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Abstract

The invention relates to the field of petroleum operation cutting machinery, in particular to a novel electric downhole tool cutter. A rotary shell is connected to the lower end of a fixed shell, a fixed motor and a rotary motor are sequentially fixed in the fixed shell from top to bottom, the rotary motor is arranged at the bottom of the fixed shell, an output shaft of the rotary motor penetratesthrough the rotary shell and is arranged above the rotary shell, a transmission gear of the rotary motor is meshed with an input gear of a speed reducer in the rotary shell through an intermediate gear, a transmission screw shaft is arranged on the inner wall of the rotary shell and located below the speed reducer, a large direction changing wheel is fixed on the transmission screw shaft, and a small direction changing wheel on an output shaft of the speed reducer is meshed with the large direction changing wheel; and a cutter is mounted on the transmission screw shaft. The novel electric downhole tool cutter is driven by an electric control system to replace a complex hydraulic mechanical structure in traditional mechanical cutting, the electric control system achieves fine control on technical parameters such as the rotating speed, the cutting speed and resetting of a cutting cutter body, and smooth cutting operation is ensured.

Description

technical field [0001] The invention relates to the field of cutting machinery for petroleum operations, in particular to a novel electric downhole tool cutter. Background technique [0002] The downhole cutter is to lower the tool pipe string equipped with high-strength alloy blades into the predetermined position in the downhole, and the cutter blades are opened to contact the inner wall of the pipe to be cut through the wellhead operation (commonly used in pressurized mode), and the downhole cutter is driven by the power of the wellhead The upper-loaded carbide blade rotates around the axis of the cutter to achieve rotary cutting. There are two types of downhole cutters commonly used in China at present: hydraulic cutter cutters and mechanical cutters. The hydraulic cutter relies on the pump body to transport the working fluid to drive the screw of the loaded blade to rotate to realize the rotary cutting of the blade. The mechanical cutter relies on the turntable of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B29/00E21B44/02E21B3/02
CPCE21B29/005E21B44/02E21B3/02
Inventor 梁杰侯立东陈增海孙旭涛
Owner HELI TECH ENERGY CO LTD
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