Machining process of high-performance adapter for drill stem

A conversion joint and processing technology technology, applied in the field of oil drilling, can solve the problems of high mining difficulty, low reliability and high failure rate, improve the strength of threaded connection and torsional strength, reduce the number of drilling operations, and reduce leakage the effect of the probability of

Inactive Publication Date: 2021-12-03
SHANXI FENGLEI DRILLING TOOLS
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  • Claims
  • Application Information

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Problems solved by technology

In recent years, with the development of oilfield development towards deep wells, ultra-deep wells and directional drilling, due to the increasingly harsh working environment of drilling operations, higher requirements have been put forward in terms of resistance to low temperature and torsion resistance, and the materials used in conventional conversion joints, and It is not the most ideal material. Although...

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  • Machining process of high-performance adapter for drill stem
  • Machining process of high-performance adapter for drill stem

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Embodiment Construction

[0015] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0016] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the embodiment of the application. Obviously, the described embodiment is only a part of the application Examples, but not all examples. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0017] A process for processing a high-performance adapter for a drill string, the main steps of which are as follows:

[0018] S1. Preparation of alloy structural steel blank: the alloy powder mixture is sequentially processed into...

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Abstract

The invention discloses a machining process of a high-performance adapter for a drill stem. The machining process mainly comprises the following steps of preparation of an alloy structural steel smooth blank, heat treatment of an alloy structural steel bar body and machining of the inner shape and the outer shape of the adapter. The mechanical properties of the high-performance adapter processed according to the process are superior to those of domestic and overseas petroleum industry standards. When the adapter bears tension, compression, bending and torsional loads underground, an inner shoulder and an outer shoulder play a role as well, the stress sectional area of threads is increased, the threaded connection strength and the torsional strength of the adapter can be improved, and the probability of piercing leakage of a sealing face can be greatly reduced.

Description

technical field [0001] The invention belongs to the field of petroleum drilling, and in particular relates to a processing technology of a high-performance conversion joint for a drill string. Background technique [0002] As a fast drilling tool, the drill string is widely used in the field of oil drilling. The drill string generally includes kelly, drill pipe, drill collar and some downhole tools. These oil drilling tools need to be fixed with adapters, so the performance of adapters will directly affect the efficiency of drilling operations. In recent years, with the development of oilfield development towards deep wells, ultra-deep wells and directional drilling, due to the increasingly harsh working environment of drilling operations, higher requirements have been put forward in terms of resistance to low temperature and torsion resistance, and the materials used in conventional conversion joints, and It is not the most ideal material. Although the impact toughness of ...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/44C22C38/42C22C33/04C21D1/18C21D8/06E21B17/042
CPCC22C38/02C22C38/04C22C38/44C22C38/42C22C38/001C22C33/04C21D1/18C21D8/065E21B17/042
Inventor 李桂变郑锡坤程馨玉赵亮亮黄超赵晶牛利宁刘军燕
Owner SHANXI FENGLEI DRILLING TOOLS
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