Portable wellbore cutting device

Abstract

The invention provides a portable wellbore cutting device. The portable wellbore cutting device comprises a high-pressure water pump 1, a high-pressure hose 2, a clamping fixer 3, a hydraulic rotator4 and a cutting tool bit 5, wherein the high-pressure water pump 1 is connected to the clamping fixer 3 through the high-pressure hose 2, the hydraulic rotator 4 is hung below the clamping fixer 3 andforms axial limiting and circumferential rotating fit with the clamping fixer 3, and the cutting tool bit 5 is installed on an output shaft on the lower portion of the hydraulic rotator 4. Accordingto the device, high-pressure water provided by the high-pressure water pump drives the output shaft of the hydraulic rotator to rotate to drive the cutting tool bit to rotate to realize wellbore cutting. Vertical and axial fixation of the cutting pipe string is realized through the clamping fixer mounted at the top. Through the implementation of the portable wellbore cutting device, wellbore cutting operation can be independently achieved under the condition that drilling / workover equipment is not used for supporting, the offshore wellbore cutting construction cost and difficulty are reduced,and the offshore wellbore cutting feasibility is improved.

Description

technical field [0001] The invention relates to an independent modular grinding and cutting device suitable for removing and cutting offshore shafts, in particular to a portable shaft cutting device, which belongs to the field of marine engineering. Background technique [0002] With the continuous deepening of offshore oil development, some offshore oil wells put into production in the early stage stopped production due to no oil to be recovered, and their supporting wells lost their original functions and were abandoned and distributed on the waterway, which brought huge hidden dangers to marine navigation and construction safety. , needs to be dismantled urgently; platforms that have reached the design service age and cannot be used after evaluation must be completely dismantled according to the State Oceanic Administration's "Interim Measures for the Abandonment Management of Offshore Oil Platforms", and the remaining structures on the seabed should be cut to 4 m from the...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of mobile drilling / workover equipment such as low degree of independence of drilling rigs, high cutting costs, platform relocation and complex factors in place, the purpose of the present invention is to provide a portable wellbore cutting device that can be used without drilling / workover equipment. With the support of workover equipment, the wellbore cutting operation can be realized independently without the support of drilling / workover equipment, reducing the construction cost and difficulty of offshore wellbore cutting, and improving the feasibility of offshore wellbore cutting

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