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Large-caliber expanding bit and large-caliber well drilling method

A technology for reaming drill bits and large-diameter wells, which is applied to drilling equipment and methods, drill bits, drilling equipment, etc., which can solve the problems of limited rock area effectively, and achieve the effect of ensuring the size of the hole and prolonging the service life

Inactive Publication Date: 2018-03-27
中国煤炭地质总局水文地质局
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main problem is that the effective rock extraction area of ​​multiple cones in a single row is limited. Therefore, large-diameter drilling requires multi-stage reaming to complete

Method used

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  • Large-caliber expanding bit and large-caliber well drilling method
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  • Large-caliber expanding bit and large-caliber well drilling method

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Embodiment Construction

[0030] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0031] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood ...

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Abstract

The invention provides a large-caliber expanding bit and a large-caliber well drilling method. A guiding head connecting rod is connected with one end of a bit body. A drilling rod connecting rod is connected with the other end of the bit body. A plurality of sets of toothed wheel palms are connected with the end, connected with the guiding head connecting rod, of the bit body. A plurality of spraying heads are connected with the end, connected with the guiding head connecting rod, of the bit body. A plurality of pipe paths are dug in the bit body. One ends of the multiple pipe paths communicate with the drilling rod connecting rod, and the other ends of the multiple pipe paths communicate with one spraying head. According to the large-caliber expanding bit and the large-caliber well drilling method, the multiple sets of toothed wheel palms are combined organically, the caliber of an expanding can be changed according to the requirement, and the purpose of once expanding forming is achieved.

Description

technical field [0001] The invention belongs to the field of geological drilling, and in particular relates to a large-diameter reaming drill bit and a large-diameter well drilling method. Background technique [0002] The reaming bits used now are all reaming bits that are made by enlarging the reaming bit body and welding a single row of single cones, and utilizing the cones to break the formation to achieve the purpose of reaming. The main problem is that the effective area of ​​rock to be taken by multiple cones in a single row is limited. Therefore, large-caliber drilling requires multi-stage reaming to complete. Contents of the invention [0003] In view of this, the present invention aims to propose a large-diameter reaming drill bit and a large-diameter well drilling method. By improving the structure of the drill bit, the drill bit can expand a larger-diameter hole at one time and improve work efficiency. [0004] In order to achieve the above object, technical s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/28E21B10/18E21B7/28
CPCE21B7/28E21B10/18E21B10/28
Inventor 王国强尚彦胜
Owner 中国煤炭地质总局水文地质局
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