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Selecting method and selecting device for drilling tool

A technology for drilling tools and drill bits, which is applied in the field of drilling tool selection methods and devices, and can solve the problems of poor field applicability of drill bits, inability to select drill bits, narrow standard range, etc.

Active Publication Date: 2019-04-30
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the process of selecting the drill bit, the preliminary selection of the drill bit is usually carried out according to the drillability of the rock. However, due to the narrow standard range of the drillability of the rock, the standard range is usually 1 to 10, and the measurement results in actual tests often appear In the case of greater than 10, in this case it is impossible to select a suitable drill bit according to the drillability of the rock, that is, the above-mentioned bit selection method has poor field applicability

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  • Selecting method and selecting device for drilling tool
  • Selecting method and selecting device for drilling tool
  • Selecting method and selecting device for drilling tool

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Embodiment Construction

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0026] figure 1 It is the flow chart of Embodiment 1 of the selection method of the drilling tool of the present invention, such as figure 1 As shown, the method of this embodiment may include:

[0027] Step 101 , perform a rock mechanical strength test on at least three rocks, and obtain the uniaxial compressive strength UCS and Young's modulus...

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Abstract

The invention provides a selecting method and a selecting device for a drilling tool. The selecting method for the drilling tool, disclosed by the invention, can realize multiple properties of quantized synthetic rock; by the drill bit matched with the rock according to the multiple properties of the rock, the matching degree between the selected drill bit and stratum is improved, and the drillingefficiency is improved.

Description

technical field [0001] Embodiments of the present invention relate to drilling technology in the field of petroleum exploration and development, and in particular to a method and device for selecting a drilling tool. Background technique [0002] In the drilling process, the drill bit is the main tool for breaking rock, and the wellbore is formed by breaking the rock with the drill bit. Whether a wellbore is formed well or not, the length of time it takes is not only related to the characteristics of the drilled formation rock and the performance of the drill bit itself, but also to the degree of matching between the drill bit and the formation. The reasonable selection of the drill bit plays an important role in increasing the drilling speed and reducing the overall cost of drilling. [0003] In the process of selecting the drill bit, the preliminary selection of the drill bit is usually carried out according to the drillability of the rock. However, due to the narrow stan...

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Application Information

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IPC IPC(8): E21C39/00
CPCE21C39/00
Inventor 杨沛何仁清李宁周波陈龙
Owner PETROCHINA CO LTD