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Dual Push Static Push-Back Rotary Steerable Tool

A rotary-steering, double-push technology, applied in directional drilling and other directions, can solve problems such as increasing the slope, achieve the effect of reducing requirements, reducing internal cavities, and improving working life

Active Publication Date: 2021-07-02
韶关地质工程有限公司
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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. Other positions have to continue to use traditional slide steerable drilling tools to increase the slope

Method used

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  • Dual Push Static Push-Back Rotary Steerable Tool
  • Dual Push Static Push-Back Rotary Steerable Tool
  • Dual Push Static Push-Back Rotary Steerable Tool

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Embodiment Construction

[0036] 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.

[0037] Combine below Figure 1 to Figure 6 , the preferred embodiments of the present invention will be described in further detail.

[0038] Such as figure 1 As shown, it is the cross-section of the double-push type static push-back type rotary steering tool passing the axis of the mandrel 10 in the ramp-up state.

[0039] The rear end of the base 40 is fixedly connected to the drill string 3 , and is used for connecting the double-push static push-to-rest rotary steering tool to the drill string 3 .

[0040] The rear end of the mandrel 10 is fixedly connected to the base 40, and the front end of the mandrel 10 is fixedly connected to the drill bit 1; it is used to transmit the torq...

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Abstract

The invention relates to a drilling tool in the field of oil and natural gas drilling, and is a double-push static push-to-rest rotary steering tool. Technical problem: Increase the ramping effect. Technical features: including mandrel, offset mechanism, outer cylinder, base; offset mechanism includes inner eccentric cylinder, outer eccentric cylinder, locking mechanism, driving cylinder, and driving mechanism. The inner eccentric cylinder is socketed on the mandrel; the outer eccentric cylinder is socketed on the inner eccentric cylinder; the locking mechanism can lock the outer eccentric cylinder and the inner eccentric cylinder. The driving cylinder is fixedly connected to the body of the inner eccentric cylinder, and one end of the outer cylinder is sleeved on the driving cylinder; the driving mechanism can drive the outer cylinder and the inner eccentric cylinder to rotate. There are two sets of biasing mechanisms, biasing mechanism A is rotatably connected to the front end of the outer cylinder, and biasing mechanism B is rotatably connected to the rear end of the outer cylinder. Beneficial effects: through the two sets of offset mechanisms at the front and rear, the angle of drill bit offset is increased to achieve the purpose of guiding; compared with the prior art, the offset angle of the two sets of offset mechanisms at the front and rear is larger.

Description

technical field [0001] The invention relates to a drilling tool in the field of oil, natural gas and other drilling, and is a double-push static push-to-rest 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 slope. [0003] Therefore, it is necessary to invent a new rotary steerable tool to increase the kick-off eff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/06
CPCE21B7/06
Inventor 林建秋姜万林吴红雷邱世军
Owner 韶关地质工程有限公司
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