Multi-functional drilling tool assembly used for complex formations and drilling method thereof

A technology for complex strata and drilling tool assembly, applied in drilling equipment and methods, earthwork drilling, drilling equipment, etc., can solve problems such as hole wall collapse and leakage, achieve strong stratum adaptability, high drilling efficiency, The effect of a high degree of automation

Pending Publication Date: 2018-10-19
CHENGDU UNIVERSITY OF TECHNOLOGY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the frequent impact of drilling tools on the hole wall and the erosion of the hole wall by the circulating flow of flushing fluid during drilling operations, it is easy to cause different degrees of collapse and leakage of the hole wall; (4) complex formations formed by groundwater dissolution

Method used

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  • Multi-functional drilling tool assembly used for complex formations and drilling method thereof
  • Multi-functional drilling tool assembly used for complex formations and drilling method thereof
  • Multi-functional drilling tool assembly used for complex formations and drilling method thereof

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Embodiment Construction

[0043] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0044] Such as figure 1 and figure 2 As shown, a multifunctional drilling tool assembly for complex formations includes a drilling assembly, a detection assembly for detecting the inside of a hole, a control host 2 and a carrying robot 3, and the drill string of the drilling assembly 16 is set in the hole and extends to the surface. The drilling assembly performs drilling into broken rock and sampling, and returns the rock sample to the surface. On the outer wall of the drill string 16, the detection assembly is arranged on the delivery robot 3, and the delivery robot 3 can drive the detection assembly to slide up and down along the outer wall of the drill string 16 and horizontally around the drill string 16. Ci...

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Abstract

The invention relates to a multi-functional drilling tool assembly used for complex formations and a drilling method thereof. The drilling tool assembly comprises a drilling assembly, a detection assembly used for detecting inside of a hole, a hole wall restoration assembly used for restoring a hole wall, a drilling tool unlocking assembly used for unlocking a drilling tool, a control host and a delivery robot. The drilling assembly is used to drill and sample rubbles. The delivery robot can be arranged on the outer wall of a drilling rod column in an upward and downward sliding manner. The detection assembly is arranged on the carrying robot and moves up and down along the outer wall of the drilling rod column alongside the delivery robot. The control host is electrically connected with the detection assembly and the delivery robot. The multi-functional drilling tool assembly has evident many advantages such as drilling and sampling efficiency, high stratum adaptability and high automation degree. The detection assembly can drill and sample in complex formations while detecting the condition of the inside of the hole, thereby offering scientific, accurate and comprehensive technical parameters and information for accurate judgment and processing of hole-drilling accidents.

Description

technical field [0001] The invention relates to the technical field of drilling, in particular to a multifunctional drilling tool assembly for complex formations and a drilling method thereof. Background technique [0002] The complex strata (Complex Strata) encountered in drilling operations mainly refer to some special lithological strata that hinder normal drilling, including loose strata, poor cementation, soft and hard interbeds, water swelling, water dissolution, or Breakage, fissures, fractures caused by geological tectonic movement, as well as groundwater dissolution activities, etc., will bring adverse effects such as collapse, breakage, leakage, water gushing, and block loss to normal drilling operations. In addition, during the drilling operation, the situation in the underground borehole is not visible on the surface, so that the drilling accidents occurring in the underground hole cannot be handled correctly and in a timely manner. [0003] The causes of comple...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/02E21B7/00E21B47/002
CPCE21B7/00E21B49/02E21B47/002
Inventor 温继伟裴向军莫定强
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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