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Integrally-weighted drilling rod and production and processing method thereof

A drill pipe and integral technology, which is applied in the direction of drill pipe, metal processing equipment, drill pipe, etc., can solve the problems of limited promotion, low strength of drill pipe body, high processing cost, etc., and achieve the effect of simple process

Inactive Publication Date: 2009-12-30
JIANGSU WENFENG CHEM FIBER GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former is currently a relatively common processing method, which has the disadvantage of low strength of the drill pipe body, and the latter is limited because of its high processing cost and difficulty.

Method used

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  • Integrally-weighted drilling rod and production and processing method thereof
  • Integrally-weighted drilling rod and production and processing method thereof
  • Integrally-weighted drilling rod and production and processing method thereof

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Embodiment Construction

[0018] see figure 1 , figure 1 It is a structural schematic diagram of an embodiment of the heavy drill rod of the present invention. The invention relates to an overall weighted drill pipe, which is integrally processed from a chrome-molybdenum alloy steel seamless steel pipe. It includes a pipe body 1, a female end 11 arranged at one end of the pipe body, and a male end 12 arranged at the other end of the pipe body; the pipe body, the female end and the male end are all made of chrome-molybdenum alloy steel seamless steel pipe constituted and integrally formed.

[0019] The method for producing and processing the integrally weighted drill pipe includes a raw material inspection step (1), a processing and forming step (2), and a subsequent processing and finishing step (3); the processing and forming step adopts a pipe end upsetting process.

[0020] The method of the present invention will be described in detail below by taking the production and processing of 31 / 2"~51 / 2"...

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Abstract

The invention discloses an integrally-weighted drilling rod and a production and processing method thereof. The integrally-weighted drilling rod comprises a pipe body, and a box end and a pin end arranged at two ends of the pipe body, and is characterized in that the pipe body, the box end and the pin end are formed integrally by adopting chrome molybdenum alloy steel seamless steel pipes. The method for producing and processing the integrally-weighted drilling rod by using the chrome molybdenum alloy steel seamless steel pipes comprises the steps of raw material inspection, processing and forming, subsequent processing and sorting and is characterized in that the step of the processing and forming adopts a tube upset process and comprises the following process steps: performing intermediate frequency heating on two ends of a steel pipe, performing upsetting and extrusion on respective ends respectively by using a box tool die and a pin tool die so as to form the box end and the pin end; and performing tempering heat treatment on the box end and the pin end of the steel pipe after the upsetting respectively. The integrally upsetting weighted drilling rod has the characteristics of high finished product strength, deep drilling depth, long service life, low processing cost, and more reutilization times.

Description

technical field [0001] The invention relates to an integral heavy drilling rod for oil exploration and a production and processing method thereof. Background technique [0002] In the process of oil extraction, the main tool used most is "oil drill pipe". Its yield strength, drilling depth, service life, processing cost and reuse times have always been the considerations and concerns of production and processing oil drill pipe manufacturers and oil exploration users. [0003] At present, the production and processing methods of heavy drill pipe are welding type and bar processing type. Welding processing requires friction welding between the weighted pipe body and the weighted joint to become a weighted drill pipe; the bar processing type is a heavy drill pipe processed by drilling, drilling and threading on the bar body . The former is a relatively common processing method at present, and has the disadvantage of low strength of the drill pipe body, while the latter is li...

Claims

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Application Information

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IPC IPC(8): E21B17/00B21J5/08
Inventor 陈文凤陈伟琛龚剑兵肖天普邓龙仁
Owner JIANGSU WENFENG CHEM FIBER GROUP
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