Combined rock debris cleaning tool with positively and reversely spiral blades

A technology of anti-helical blades and helical blades, which is applied in the field of forward and reverse helical blade combined cuttings cleaning tools, can solve the problems of low cleaning efficiency of wellbore cuttings, achieve improved cuttings cleaning efficiency, optimize upward return kinetic energy, and suppress Effects on the formation of debris beds and dunes

Active Publication Date: 2018-11-30
NORTHEAST GASOLINEEUM UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a combination cuttings cleaning tool with positive and negativ

Method used

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  • Combined rock debris cleaning tool with positively and reversely spiral blades
  • Combined rock debris cleaning tool with positively and reversely spiral blades
  • Combined rock debris cleaning tool with positively and reversely spiral blades

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Embodiment Construction

[0044] Below in conjunction with accompanying drawing, the present invention will be further described:

[0045] Such as figure 1 As shown, this combined forward and reverse spiral blade cuttings cleaning tool includes a body 16, the body 16 is a pipe body, the body 16 is provided with a forward spiral blade group and a reverse spiral blade group, and the upper end of the body 16 is provided with a female threaded joint 2, The lower end of the body 16 is provided with a male threaded joint 1, and the male threaded joint 1 and the female threaded joint 2 are used together with the drill pipe joint to connect the drill pipe. The male threaded joint 1 and the female threaded joint 2 can be machined from blanks, or can be connected to the body 16 by friction welding to ensure welding quality and connection strength. The forward helical blade 3 and the reverse helical blade 4 are both formed in cooperation with the body 16, and can be machined from a whole blank, or can be formed ...

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Abstract

The invention relates to a combined rock debris cleaning tool with positively and reversely spiral blades. The combined rock debris cleaning tool with positively and reversely spiral blades comprisesa body. A positively spiral blade group and a reversely spiral blade group are arranged on the body. The upper end of the body is equipped with a female thread joint. The lower end of the body is provided with a male thread joint. The positively spiral blade group is located on one side approaching a male joint. The spacing distance between the positively spiral blade group and the male thread joint is front blade pitch. The reversely spiral blade group is arranged above the positively spiral blade group. The spacing distance between each positively spiral blade and each reversely spiral bladeis blade group spacing distance. The female thread joint is arranged above the reversely spiral blade group. The spacing distance between the reversely spiral blade group and the female joint is backblade pitch. Drilling fluid passing channels are formed between two adjacent positively spiral blades or two reversely spiral blades. After the reversely spiral blade group rotates, spiral vortex-creating influence is acted upon rock debris and drilling fluids behind. Therefore, formation of rock debris beds and sand hills is inhibited. Accordingly, cleaning efficiency of rock debris is increased.

Description

technical field [0001] The invention relates to a cuttings cleaning tool in the technical field of oil and gas exploration equipment, in particular to a cuttings cleaning tool with a combination of positive and negative spiral blades. Background technique [0002] Oil and gas well drilling is the use of drill bits to break formation rocks to form well holes. Well holes are the channels connecting the surface and oil and gas reservoirs, and are also channels for oil and gas exploitation. When the drill bit breaks the formation rock, a large amount of cuttings are produced, and these cuttings are circulated through the drilling fluid and carried back to the ground. If the cuttings cannot be carried out of the wellbore in time, it will lead to a series of downhole problems, such as repeated breakage of the drill bit, increased frictional resistance of the drill tool, increased torque, poor cementing quality, etc., and even serious downhole accidents such as pipe sticking, twist...

Claims

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Application Information

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IPC IPC(8): E21B21/00
CPCE21B21/00
Inventor 孙晓峰闫铁胡乔波曲晶瑀汤捷张克博
Owner NORTHEAST GASOLINEEUM UNIV
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