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Tilt-head static push-the-bit rotary steerable tool

A rotary steerable and static technology, applied in the field of drilling tools, can solve problems such as increasing the build-up rate, and achieve the effect of strong build-up capability and build-up effect.

Inactive Publication Date: 2018-12-07
徐芝香
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a key technical indicator of existing rotary steerable tools—the build-up rate—has no advantage over traditional slide-steerable drilling tools. and other positions have to continue to use traditional slide steerable drilling tools to increase the build-up rate

Method used

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  • Tilt-head static push-the-bit rotary steerable tool
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  • Tilt-head static push-the-bit rotary steerable tool

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Embodiment Construction

[0031] It should be noted that, in the case of no conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0032] Combine below Figure 1 to Figure 6 , the preferred embodiments of the present invention will be described in further detail.

[0033] Such as figure 1 As shown, the cross-section of the tilting head static pushing type rotary steerable tool passing through the axis of the drill string 3 and the tilting head static pushing type rotary steering tool is described. The front end of the tilting head static push type rotary steerable tool is tilted to one side, which deviates from the axis of the drill string 3, causing the drill bit 4 to also tilt to one side of the well wall, thereby increasing the unilateral cutting of the drill bit 4, resulting in a deflection effect .

[0034...

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PUM

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Abstract

The invention relates to a drilling tool in the field of drilling of oil, natural gas and the like, in particular to a tilt-head static push-the-bit rotary steerable tool. According to the technical scheme, the front end of the tool is tilted towards one side. The tilt-head static push-the-bit rotary steerable tool is technically characterized in that the tilt-head static push-the-bit rotary steerable tool comprises a central spindle, a universal joint, a base, an outer cylinder and biasing mechanisms; the front end of the base is connected with the universal joint, the universal joint is connected with the central spindle, and the front end of the central spindle is fixedly connected with a drill bit; the rear end of the outer cylinder is rotatably connected with the base in a sleeving mode, and the front end of the outer cylinder is rotatably connected with the central spindle in a sleeving mode; the three sets of biasing mechanisms are evenly arranged on the periphery of the front end of the outer cylinder; the biasing mechanisms comprise retractable wing ribs; and the front end of the tilt-head static push-the-bit rotary steerable tool is tilted towards one side. The tilt-headstatic push-the-bit rotary steerable tool has the beneficial effects that the outer cylinder and the well wall are transversely static, a tilt head generates the angle building effect, the biasing mechanisms also generate the angle building effect, when the tilt head and the biasing mechanisms are all located on the well wall on the same side, the tilt head and the biasing mechanisms are overlaid,and thus the higher angle building effect is generated.

Description

technical field [0001] The invention relates to a drilling tool in the field of oil, natural gas and other drilling, and is a tilting head static pushing type rotary steering tool. Background technique [0002] With the development of ultra-deep wells, high-difficulty directional wells, cluster wells, horizontal wells, extended-reach wells, branch wells and wells with complex three-dimensional structures, rotary steering tools have better hole purification effects, higher precision of wellbore trajectory control, and displacement The extension ability is stronger, gradually replacing the traditional sliding guide tool. However, a key technical indicator of existing rotary steerable tools—the build-up rate—has no advantage over traditional slide-steerable drilling tools. Such positions have to continue to use traditional slide steerable drilling tools to increase the build-up rate. [0003] Therefore, it is necessary to invent a new rotary steerable tool to increase the kic...

Claims

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Application Information

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IPC IPC(8): E21B7/06
CPCE21B7/06
Inventor 邱世军
Owner 徐芝香