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Rotating impactor

A technology of impactor and rotating shaft, which is applied to drilling equipment, earthwork drilling, and driving devices for drilling in boreholes. The effect of speed and improving drilling efficiency

Active Publication Date: 2018-06-15
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a torsional impact force that can be generated during normal drilling, thereby effectively solving the stick-slip phenomenon of the PDC bit in the existing deep well drilling, thereby improving the drilling efficiency of deep wells and ultra-deep wells, and reducing drilling costs. rotary impactor

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Examples

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Embodiment Construction

[0025] The rotary impactor includes an upper joint 1, a shell 2, and a lower joint 3. One end of the shell 2 is threaded with the upper joint 1, the other end of the shell 2 is threaded with the lower joint 3, and one end of the shell 2 passes through the upper joint. The bearing seat 4 is equipped with an upper thrust bearing 5, and the other end of the housing 2 is equipped with a lower bearing 7 through the lower bearing seat 6. The upper bearing seat 4 and the lower bearing seat 6 are respectively provided with a bearing seat flow hole 8, and the upper thrust A rotating shaft 9 is installed between the bearing 5 and the lower bearing 7, and rotating shaft blades 10 are symmetrically arranged on the rotating shaft 9, and a stator 11 is fixedly installed on the inner wall of the housing 2 corresponding to the rotating shaft blades 10, and a guide groove is arranged axially on the stator 11 12. The stator 11 is connected with the rotor blade 10 in movable contact.

[0026] An...

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Abstract

The invention relates to a rotating impactor, and belongs to the technical field of oil and gas downhole tools. An upper thrust bearing is installed at one end in a shell through an upper bearing pedestal, a lower bearing is installed at the other end in shell through a lower bearing pedestal, a rotating shaft is installed between the upper thrust bearing and the lower bearing, rotating shaft blades are symmetrically arranged on the rotating shaft, a stator is fixedly installed on the shell inner wall corresponding to the rotating shaft blades, and the stator is in movable contact connection with the rotating shaft blades. The rotating impactor is simple in structure and good in practicability, the rotating shaft is pushed to rotate through the rotating shaft blades, the stator is impactedto form torsional impact force, in this way, the stick-slip jamming phenomenon of a PDC drill bit in the drilling process is relieved through impact torque, the mechanical rotational speed is increased, and the drilling efficiency is improved; according to the rotating impactor, work is reliable, few easily-worn parts are adopted, the service life is long, and the positive meaning is achieved forlowering the drilling cost.

Description

technical field [0001] The invention relates to a rotary impactor, which belongs to the technical field of oil and gas downhole tools. Background technique [0002] In the field of oil and gas exploration and development, with the increasingly widespread application of deep wells and ultra-deep wells, deep drilling encounters problems such as high rock hardness in deep formations, stick-slip sticking of the drill bit when drilling with a PDC bit, and drilling speed The low-level problem has become a key problem restricting the development of deep drilling technology. In order to solve the above problems, it is necessary to develop a torsional impact force that can generate torsional impact during normal drilling, use the torsional impact force to assist in rock breaking, and alleviate the stick-slip sticking phenomenon during the drilling process of the PDC bit, thereby increasing the ROP , a downhole tool that saves drilling costs. Contents of the invention [0003] The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B4/16
CPCE21B4/16Y02E10/20
Inventor 钱利勤黄剑夏成宇秦伟杰李旭胡胜良
Owner YANGTZE UNIVERSITY