Drill rod capable of reducing friction and pressure and removing rock debris

A cuttings bed and drill pipe technology, applied to drill pipes, drill pipes, drilling equipment, etc., can solve downhole complex problems, affect the life of oil and gas wells, and drill sticking, so as to reduce the probability of occurrence, reduce well complex problems, and enhance Effect of Rock Carrying Ability

Inactive Publication Date: 2014-07-16
上海海隆石油钻具有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the drilling process of highly deviated wells and horizontal wells, due to the effect of gravity, the drill pipe is always against the well wall (or casing), and its contact area is much larger than that of vertical wells, and the friction and torque generated will be In addition, there is usually a cuttings bed at the bottom of the well, which will not only increase the friction, affect the application of bit pressure and the quality of wellbore trajectory control, but also cause a variety of downhole complex problems, and even cause downhole leakage, sticking and other malignant Accidents will affect the quality of cementing and even affect the life of oil and gas wells

Method used

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  • Drill rod capable of reducing friction and pressure and removing rock debris
  • Drill rod capable of reducing friction and pressure and removing rock debris

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Embodiment Construction

[0015] Such as figure 1 , 2 As shown, the invention discloses a drill pipe for reducing friction and reducing pressure to remove cuttings bed. As shown in the figure: it includes a drill pipe body 1 and a female threaded joint 2 and a male threaded joint 3 arranged at both ends of the drill pipe body 1. The surface of the drill pipe body 1 is sequentially provided with a first helical groove 4, a bearing type The protective cover 5 and the second spiral channel 6 .

[0016] As a preferred structure, the groove top diameters of the spiral channels 4, 6 are not larger than the outer diameters of the female threaded joint 2 and the male threaded joint 3, and the groove bottom diameters of the spiral channels 4, 6 are larger than the outer diameter of the drill pipe body 1.

[0017] As a preferred structure, the outer diameter of the bearing-type protective sleeve 5 is larger than the groove top diameters of the spiral channels 4, 6; the bearing-type protective sleeve 5 is insta...

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Abstract

The invention relates to a drill rod in the technical field of drilling in oil and gas fields, in particular to a drill rod capable of reducing friction and pressure and removing rock debris. The drill rod capable of reducing friction and pressure and removing rock debris comprises a drill rod body, a female threaded connector and a male threaded connector, wherein the female threaded connector and the male threaded connector are arranged at the two ends of the drill rob body, and the surface of the drill rod body is sequentially provided with a first spiral channel, a bearing type protective sleeve and a second spiral channel. When the drill rod is used, the contact area between the drill rod body and a well wall or a sleeve is reduced, the friction force and the torque are effectively reduced, the drill rod can be centralized, bending of a drill column is avoided, the spiral channels are protected from abrasion, the spiral channels are additionally arranged, the rock carrying capacity of annulus fluid is improved through the channel structure, and the occurrence rate of rock debris is lowered.

Description

technical field [0001] The invention relates to a drill pipe in the technical field of oil and gas field drilling, in particular to a drill pipe for reducing friction and pressure and removing debris beds. Background technique [0002] In the drilling process of highly deviated wells and horizontal wells, due to the effect of gravity, the drill pipe is always against the well wall (or casing), and its contact area is much larger than that of vertical wells, and the friction and torque generated will be In addition, there is usually a cuttings bed at the bottom of the well, which will not only increase friction, affect the application of bit pressure and the quality of wellbore trajectory control, but also cause a variety of downhole complex problems, and even cause downhole leakage, sticking and other malignant Accidents will affect the quality of cementing, and even affect the life of oil and gas wells. Contents of the invention [0003] The purpose of the present invent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/22E21B17/10
Inventor 袁鹏斌余荣华
Owner 上海海隆石油钻具有限公司
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