Large-water-hole light workover drill rod

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...

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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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