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Wireline core drilling rig waterway control assembly and method

A waterway control and rope coring technology, which is applied to drill pipes, drill pipes, drilling equipment, etc., can solve the problems of high labor intensity and personnel costs, and long auxiliary time for waterway control, so as to shorten auxiliary operation time and reduce drilling. Field staffing and improving drilling efficiency

Active Publication Date: 2020-08-21
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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  • Description
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AI Technical Summary

Problems solved by technology

[0011] The object of the present invention is to provide a waterway control assembly and method for a rope core drilling rig, which has a simple structure and is easy to operate, and can solve the problems of long auxiliary time for waterway control, high labor intensity and high personnel cost in the prior art

Method used

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  • Wireline core drilling rig waterway control assembly and method
  • Wireline core drilling rig waterway control assembly and method
  • Wireline core drilling rig waterway control assembly and method

Examples

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Embodiment Construction

[0037] see figure 1 , shows a schematic structural view of the water channel control assembly of the wireline coring drilling rig of the present invention.

[0038] The waterway control assembly of the rope coring drilling rig includes a rotatable cable water joint 1, a waterway control valve group 2, a conventional waterway joint 3 and connecting pipelines, and the waterway control valve group 2 includes a first interface 201 and a second interface 202 , the third interface 203 and the fourth interface 204, the connecting pipeline includes a water inlet pipe 401, a drain pipe 402, a cable water joint connecting pipe 403 and a conventional water joint connecting pipe 404, wherein one end of the water inlet pipe 401 is connected to the The first interface 201 is connected, and the other end is connected to the water outlet of the mud pump 8, and one end of the drainpipe 402 is connected with the second interface 202, and the other end directly leads back to the pool 7; One en...

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Abstract

A waterway control assembly and method for a cable coring drilling rig, the control assembly includes a rotatable cable water joint, a waterway control valve group, a conventional waterway joint and connecting pipelines, the waterway control valve group is an intercommunicating four-way pipe fitting, three Each interface is provided with a two-way ball valve, through the opening and closing of the three two-way ball valves, to control the on-off relationship between the four interfaces, and realize the control of the waterway. The rotatable cable water joint includes an end cover, a water seal Ring, retaining ring, mandrel, rotating sleeve, water pipe joint and transition joint, the end of the mandrel is provided with a groove for the spaced installation of the sealing water ring and the retaining ring, the rotating sleeve fits in the middle of the mandrel, the The rotary sleeve is connected with a radially extending water pipe joint; thus, the present invention has a simple structure and is easy to operate, and can solve the problems of long auxiliary time for waterway control, high labor intensity and high personnel cost in the prior art.

Description

technical field [0001] The invention relates to the field of core drilling, in particular to a waterway control assembly and method for a cable core drilling rig. Background technique [0002] The characteristic of wireline coring drilling is that when the core is filled with the inner pipe, the inner pipe is fished up from the drill pipe with a wireline fisher to obtain the core without lifting the drill. During the drilling process, water or mud is generally used as the medium, and water is sent to the bottom of the hole through the passage between the water joint and the mud pump. During normal drilling, since the drill pipe is a rotating part, it is necessary to connect the conventional water joint with the drill pipe, and then connect the rubber hose between the conventional water stool and the mud pump. When fishing the core, it is mainly a horizontal hole or an upward hole. It is necessary to put the overshot into the core drill pipe, connect the cable-type water joi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B25/02E21B21/10E21B17/04
CPCE21B17/04E21B21/10E21B25/02
Inventor 鲁飞飞凡东常江华王瑞泽田宏亮邹祖杰王振亚
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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