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Quality-improving and speed-increasing drilling tool for oil and gas well

A drilling tool and technology for oil and gas wells, applied in drilling equipment, directional drilling, drill pipes, etc., can solve the problems of complex structure of speed-increasing drilling tools, inability to prevent deflection of wellbore quality, etc., to improve axial rock breaking efficiency and improve lateral Ability to rectify inclination, beneficial to the effect of anti-slant

Pending Publication Date: 2022-01-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used speed-up drilling tools are complex in structure, and there are operational risks in complex downhole conditions such as leakage and collapse, and cannot prevent deviation and straighten drilling to ensure borehole quality

Method used

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  • Quality-improving and speed-increasing drilling tool for oil and gas well
  • Quality-improving and speed-increasing drilling tool for oil and gas well

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Experimental program
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Effect test

Embodiment Construction

[0021] The present invention is introduced below by accompanying drawing.

[0022] In this application, it should be noted that the end of the quality-enhancing and speed-improving drilling tool lowered into the wellbore away from the wellhead is defined as the "lower end" or similar terms, and the end close to the wellhead is defined as the "upper end" or similar terms.

[0023] figure 1 Schematically shows the structure of the drilling tool 100 for improving the quality and speed of oil and gas wells according to the present invention. like figure 1 As shown, the drilling tool 100 for improving quality and speed includes a drill bit 10 , a lower centralizer 20 , a short-curved power drilling tool 30 , an eccentric drill collar 40 and an upper centralizer 50 connected in sequence. The drill bit 10 is connected below the short-bending power drilling tool 30 , the lower centralizer 50 is sheathed and installed on the lower end of the short-bending power drilling tool, and the...

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Abstract

The invention provides a quality-improving and speed-increasing drilling tool for an oil and gas well. The quality-improving and speed-increasing drilling tool comprises a drill bit, a short-bend power drilling tool, a heavy drill collar and an upper centralizer, wherein the short-bend power drilling tool is connected with the drill bit, and a lower centralizer is arranged between the drill bit and the short-bend power drilling tool; the heavy drill collar is connected with the short-bend power drilling tool; the upper centralizer is connected with the heavy drill collar and used for being connected with an upper drilling tool; the short-bend power drilling tool is provided with an eccentric mass block to form an eccentric structure, and the short-bend power drilling tool is induced to generate circumferential vortex motion under the dynamic action of a coupling drill column, so that the drill bit generates non-uniform dynamic lateral force and periodic axial impact load, and dynamic anti-inclination force is formed.

Description

technical field [0001] The invention belongs to the technical field of oil and gas drilling engineering, and in particular relates to a quality-improving and speed-improving drilling tool for oil and gas wells. Background technique [0002] In oil and gas drilling engineering, a variety of solutions have been proposed to solve the problems of large dip angle, easy to deviate wellbore and difficult control in some high and steep structural belt formations. In the prior art, for formations with small dip angles, full-hole drilling tools and pendulum drilling tools based on static theory can improve the rigidity of the drilling tool assembly, reduce the gap between the drilling tool and the wellbore, and improve the bending resistance. However, in formations with strong deflection, drilling speed is usually exchanged for wellbore quality, which leads to low drilling efficiency and increases the drilling construction period. Existing automatic vertical drilling tools have compl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/04E21B7/06E21B7/10E21B17/10
CPCE21B7/04E21B7/061E21B7/10E21B17/1057E21B17/1078
Inventor 张进双胡群爱狄勤丰张辉孙连忠王文昌王磊
Owner CHINA PETROLEUM & CHEM CORP
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