Large-water-hole light workover drill rod

A drill pipe, lightweight technology, applied in drill pipe, drill pipe, drilling equipment, etc., can solve the problem of insufficient mechanical strength of drill pipe, and achieve the effect of light weight, deeper repair depth, and large inner diameter

Pending Publication Date: 2021-06-01
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problem of insufficient mechanical strength of the drill pipe in the prior art, the application provides a light-weight workover drill pipe with large water holes, including the drill pipe body, and respectively installed on a first tool joint and a second tool joint at both ends of the drill pipe body;

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Embodiment Construction

[0025] In order to make the embodiments, technical solutions and advantages of the present invention more obvious, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Example. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention.

[0026] A light-weight workover drill pipe with a large water hole of the present invention comprises a drill pipe body, and a first drill pipe joint and a second drill pipe joint respectively installed at both ends of the drill pipe body;

[0027] The inner walls of the two pipe ends of the drill pipe body are retracted radially, and the first drill pipe joint includes a first structure part,...

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Abstract

The invention belongs to the technical field of drilling tools, and particularly relates to a large-water-hole light workover drill rod. The large-water-hole light workover drill rod aims to solve the problem that in the prior art, the mechanical strength of a drill rod is insufficient. The large-water-hole light workover drill rod comprises a drill rod body, a first drill rod connector and a second drill rod connector, wherein the first drill rod connector and the second drill rod connector are arranged at the two ends of the drill rod body respectively; the outer diameter of the drill rod body is set to be 100mm-103mm, and the outer diameter of the first drill rod connector and the outer diameter of the second drill rod connector are set to be 130mm-143 mm; and the inner diameter of the drill rod body is set to be 81mm-86mm, and the inner diameter of the first drill rod connector and the inner diameter of the second drill rod connector are set to be 81mm-85mm. The large-water-hole light workover drill rod is high in mechanical strength, can meet the workover operation requirements of deep wells and ultra-deep wells, and provides guarantees for drilling safety, speed increasing and efficiency improving.

Description

technical field [0001] The invention belongs to the technical field of drilling tools, and in particular relates to a lightweight workover drill pipe with large water holes. Background technique [0002] In view of the deep and ultra-deep well workover operations in the Shunbei area, the XJ850 workover rig and supporting workover technology are facing many problems such as low drilling tool strength, high workover rig load, and high pump pressure. For example: the conventional drill pipe 4″+31 / 2″+27 / 8″ drilling tool combination exceeds the safe lifting load of the XJ850 workover rig. This requires the drill pipe to have better mechanical strength and hydraulic parameters to adapt to the XJ850 Workover rig safety and speed-up and efficiency-enhancing operations. Contents of the invention [0003] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problem of insufficient mechanical strength of the drill pipe in the prior art, the...

Claims

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Application Information

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IPC IPC(8): E21B17/00E21B17/042
CPCE21B17/00E21B17/0426
Inventor 孔令楠纪海涛左斌李德伟王显林张然李亚敏支鹏鹏王西华屈小峰唐家辉
Owner BC P INC CHINA NAT PETROLEUM CORP
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