A hydraulic cutting tool for various thick-walled pipes
A thick-walled pipe and hydraulic technology, which is applied in the field of oil and gas field exploration and development, can solve the problems of not being able to keep the cutting resistance of the blade consistent with the casing, affecting the cutting effect, and the stability of the blade is not high.
Active Publication Date: 2021-06-08
北京佰文恒新能源服务有限公司
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Problems solved by technology
This way of using high-pressure liquid impact to control the extension of the blade makes the stability of the blade not high. When cutting the casing, the cutting resistance of the blade by the casing cannot be kept consistent with the impact force of the high-pressure liquid on the piston. , due to the influence of cutting resistance, the protruding length of the blade will change, which will affect the cutting effect
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[0024] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0025] see Figure 2-Figure 6 , a hydraulic cutting tool for a variety of thick-walled pipes, including: a central connecting rod 1, the central connecting rod 1 is set as a tubular structure, one end of the central connecting rod 1 is connected to the top joint 2; the water eye base 3. The water eye base 3 is connected to the other end of the central connecting rod 1; the blade 4, the blade 4 rotates on the outer wall of the water eye base 3 away from the central connecting rod 1 end; the connecting sleeve 5, the connecting The sleeve 5 is sleeved on the central connecting rod 1, and the connecting sleeve 5 is set at the end of the water eye base 3 away from the bl...
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The invention provides a hydraulic cutting tool for a variety of thick-walled pipes, including: a central connecting rod, the central connecting rod is configured as a tubular structure, and one end of the central connecting rod is connected to the top joint; a water eye base, the water eye base is connected to The other end of the central connecting rod; the blade, the blade is rotatably connected to the outer wall of the water eye base away from the central connecting rod end; the connecting sleeve, the connecting sleeve is sleeved on the central connecting rod, and the connecting sleeve is set on the water eye base away from the blade end, and There is a spring connected between the connecting sleeve and the top joint; the knife body, the knife body is sleeved on the water eye base, and one end of the knife body is connected to the connecting sleeve, and the knife body is provided with a through groove for the blade to extend out. A leading cone body is connected to the connecting rod end away from the center. The invention controls the extending distance of the blade by adjusting the pressure of the high-pressure liquid. Because the pressure of the high-pressure liquid is better controllable, the stability of the blade is higher, the cutting effect is ideal, and the structure is simple.
Description
technical field [0001] The invention relates to the technical field of exploration and development of oil and gas fields, in particular to a hydraulic cutting tool for various thick-walled pipes. Background technique [0002] During the exploration and development of oil and gas fields, the operation of cutting tools will appear. The types of tools required for cutting are complex, including tubing, casing, drill pipe, and heavy-weight drill pipe. A cutting tool for thick-walled pipes. [0003] Such as figure 1 Shown in the current domestic common hydraulic cutter used for multi-layer casing cutting, the blade extension control principle uses the impact of high-pressure liquid on the piston, pushing the piston to move towards the blade, and then pushing the blade out, and then the casing is cutting work. This way of using high-pressure liquid impact to control the extension of the blade makes the stability of the blade not high. When cutting the casing, the cutting resis...
Claims
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IPC IPC(8): E21B29/00
CPCE21B29/005
Inventor 樊秀平魏萍曾凡黔李祥张馨元
Owner 北京佰文恒新能源服务有限公司