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Remote control pipe cutting device with cable as transmission carrier and cutting method

A technology of transmission carrier and cutting device, which is used in earth-moving drilling, wellbore/well components, etc., can solve problems such as inability to operate, poor cutting control accuracy, etc., and achieve the effects of convenient operation and assembly, precise cutting, and stable hydraulic power.

Pending Publication Date: 2022-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to aim at the defects existing in the prior art, and to provide a remote control pipe material cutting device and cutting method using cables as the transmission carrier. The cutting device is transported downhole, and a series of work such as anchoring, cutting, and knife retraction are carried out through remote control on the ground, which solves the problems that the current downhole pipe string cutting tools cannot work in small-sized pipes and poor cutting control accuracy

Method used

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  • Remote control pipe cutting device with cable as transmission carrier and cutting method
  • Remote control pipe cutting device with cable as transmission carrier and cutting method
  • Remote control pipe cutting device with cable as transmission carrier and cutting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] See 1 to 3 As shown, a remote control pipe cutting device using cable as transmission carrier includes a cable tap 2, a first power mechanism 4, an anchoring mechanism 5, a second power mechanism 7 and a cutting mechanism 9, which are installed in series from top to bottom. The cable tap 2 is provided with a cable 1, and the cable is made of armor cable capable of bearing large tensile force.

[0047] The first power mechanism 4 includes a first cylinder 101, in which a controller 102, a first motor 103 and a plunger pump 104 are sequentially arranged from top to bottom. The controller 102 is electrically connected with the cable 1 and the first motor 103 respectively, and the output of the first motor 103 is connected with the input of the plunger pump 104, which is used to provide hydraulic power to the anchoring mechanism 5.

[0048] The second power mechanism 7 includes a second cylinder 201, in which a second motor 202 and a first reducer 203 are sequentially arranged ...

Embodiment 2

[0059] See 1 to 3As shown, a remote control pipe cutting device using cable as transmission carrier includes a cable tap 2, a first power mechanism 4, an anchoring mechanism 5, a second power mechanism 7 and a cutting mechanism 9 which are installed in series from top to bottom, and the cable tap 2 is provided with a cable 1.

[0060] The first power mechanism 4 includes a first cylinder 101, in which a controller 102, a first motor 103 and a plunger pump 104 are sequentially arranged from top to bottom. The controller 102 is electrically connected with the cable 1 and the first motor 103 respectively, and the output of the first motor 103 is connected with the input of the plunger pump 104, which is used to provide hydraulic power to the anchoring mechanism 5.

[0061] The second power mechanism 7 includes a second cylinder 201, in which a second motor 202 and a first reducer 203 are sequentially arranged from top to bottom. The second motor 202 is electrically connected with the...

Embodiment 3

[0072] This embodiment is optimized on the basis of Embodiment 2, specifically:

[0073] See 1 to 3 As shown, the movable support arm includes a first support arm 108 rotatably connected with the slider 107 and a second support arm 110 rotatably connected with the first support arm 108. The movable end of the second support arm 110 is rotatably connected with the tool outer cylinder 114, and the first support arm 108 and the second support arm 110 are in a "herringbone" shape.

[0074] By designing the first support arm 108 and the second support arm 110 into a "herringbone" structure, the stability of the anchor block 109 when it moves laterally is increased.

[0075] There are at least three sets of anchor blocks 109, which are evenly distributed in the circumferential direction of the tool outer cylinder 114. The design of multiple sets of anchor blocks 109 further increases the stability of anchoring timing.

[0076] The hydraulic chamber 105 is also provided with a pressure s...

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Abstract

The invention relates to the technical field of petroleum equipment, and particularly discloses a remote control pipe cutting device with a cable as a transmission carrier and a cutting method.The remote control pipe cutting device comprises a cable halter, a first power mechanism, an anchoring mechanism, a second power mechanism and a cutting mechanism which are installed in series from top to bottom, and the cable halter is provided with the cable. The cutting device can be hung and conveyed to a well only through a cable without pipe rod conveying and pressure transmission, the cutting device is remotely controlled on the ground through the cable to conduct a series of work such as anchoring, cutting and tool retracting, and the problems that an existing underground pipe column cutting tool cannot work in a small-size pipe and is poor in cutting control accuracy are solved.

Description

[0001] The invention relates to the technical field of petroleum equipment, in particular to a remote control pipe cutting device and a cutting method using a cable as a transmission carrier. technical background [0002] Running-in and pulling-out of string is an important work in the process of oilfield production. However, during the construction, it was found that the string could not be pulled out because of the long running-in time, the damage or the failure of tools attached to the string, which caused great difficulties to the production. [0003] Generally, there are two conventional solutions. One is to lift the pipe string with heavy-load power equipment. Although this method can lift a part of the pipe string, it is easy to cause the pipe string to be pulled out irregularly, resulting in the damage of the pipe string and increasing the difficulty of treatment. [0004] The other method is to cut and fish out the pipe string above the sticking point at a fixed point, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B29/00
CPCE21B29/005
Inventor 王增林高恒超刘玉国姜广彬伊西锋张峰魏剑飞卢雅兰田玉刚
Owner CHINA PETROLEUM & CHEM CORP