A Jet Type Torsional Drag Reducing Oscillator

An oscillator and jet-type technology, applied in the direction of vibration drilling, etc., can solve the problems of short service life of PDC bit and low drilling efficiency, and achieve the effect of improving drilling efficiency, increasing drilling speed and reducing slipping effect

Inactive Publication Date: 2017-11-03
北京沃客石油工程技术研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the above problems, the embodiment of the present invention provides a jet-type torsional drag-reducing oscillator, which aims to solve the technical problems of short service life of the PDC drill bit and low drilling efficiency in the prior art due to the sticking effect

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  • A Jet Type Torsional Drag Reducing Oscillator
  • A Jet Type Torsional Drag Reducing Oscillator
  • A Jet Type Torsional Drag Reducing Oscillator

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Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with the accompanying drawings. However, it should be understood that the accompanying drawings are provided only for better understanding of the present invention, and they should not be construed as limiting the present invention.

[0019] Such as figure 1 as shown, figure 1 It is a jet-type torsional drag-reducing oscillator provided by the embodiment of the present invention. see figure 1 , figure 2 , image 3 , Figure 4 , the jet-type torsional drag-reducing oscillator includes an upper joint, an outer cylinder, an upper end cover, a bistable jet element, an alternating pressure flow channel, a torque cylinder, a torque piston, a bearing, a fast card, and a drill sleeve; the outer cylinder The upper end cover, the bistable jet element, the alternating pressure flow channel, the torque cylinder, the torque piston and the bearing are arranged in sequence in the interior; the upper end of t...

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Abstract

The invention discloses a jet type twisting resistance reduction oscillator and relates to the technical field of drilling technologies. An impactor comprises an upper connector, an outer cylinder, an upper end cover, a bi-stable jet element, an alternating pressure passageway, a torque cylinder, a torque piston, bearings, clamping blocks and a drill sleeve. The upper end cover, the bi-stable jet element, the alternating pressure passageway, the torque cylinder, the torque piston and the bearings are sequentially arranged inside the outer cylinder. The upper end of the outer cylinder is in threaded connection with the upper connector, and the lower end of the outer cylinder is connected with the drill sleeve through the clamping blocks. Through the corresponding structural design, the service life of a drill bit can be prolonged, and the rock breaking efficiency of the PDC drill bit can be improved.

Description

technical field [0001] The invention relates to the technical field of drilling technology, in particular to a jet-type torsional drag-reducing oscillator. Background technique [0002] With the development and deepening of oil and gas exploration, in the process of drilling deep wells and hard formations in many blocks in the west, problems such as low mechanical penetration rate and short life of drill bits are very prominent. For example, hard formations are encountered in the exploration and development drilling work in the Sulige area, Eastern Sichuan Oilfield, and Tarim Basin. When using PDC bits to drill into the above-mentioned formations, especially in the process of deep well drilling, the sticking effect is very serious. The sticking effect causes the irregular release of torsional elastic energy accumulated in the drill string, making the rock-breaking process of the PDC bit extremely unstable, accelerating the abnormal damage of the PDC bit, reducing the service...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/24
CPCE21B7/24
Inventor 不公告发明人
Owner 北京沃客石油工程技术研究院
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