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A Hydrate Pulse Jet Oscillation Tool

A technology of pulse jet and oscillating tools, which is applied in the direction of flushing wellbore, wellbore/well components, earthwork drilling and production, etc. It can solve the problems that the operation is easily affected by the external environment and the performance stability is poor, so as to achieve enhanced plugging removal effect and performance Stable, reliable, stress-enhancing effect

Active Publication Date: 2022-07-29
GUANGZHOU MARINE GEOLOGICAL SURVEY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, most of the existing pulse jet oscillating tools are controlled by electronic components, and their operation is easily affected by the external environment, and their performance stability is poor.

Method used

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  • A Hydrate Pulse Jet Oscillation Tool
  • A Hydrate Pulse Jet Oscillation Tool

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Experimental program
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Effect test

Embodiment Construction

[0022] In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0023] like figure 1 , 2 As shown, in the first embodiment of the hydrate pulse jet oscillating tool of the present invention, the pulse jet oscillating tool 10 includes an energy storage joint 11, a pulse oscillation generator 12 communicated with the energy storage joint 11, and a pulse oscillator The generator 12 communicates with the injector 13 .

[0024] The energy storage joint 11 includes a first outer cylinder 14 , a first inner tube 15 fixed in the first outer cylinder 14 , an energy storage spring 16 sleeved outside the first inner tube 15 , and a slidable sleeve The sealing piston 17 located outside the first inner tube 15 and located at the second end of the energy storage spring 16, the sealing piston 17 seals the first annula...

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Abstract

The invention discloses a hydrate pulse jet oscillating tool. The pulse jet oscillating tool comprises an energy storage joint, a pulse oscillation generator communicated with the energy storage joint, and an ejector communicated with the pulse oscillation generator; the energy storage joint comprises a first An outer tube, a first inner tube fixed inside the first outer tube, an energy storage spring sleeved outside the first inner tube, a seal slidably sleeved outside the first inner tube and located at the second end of the energy storage spring The piston is sealed in the first annular space between the first inner tube and the first outer cylinder, the first end of the first inner tube is fixedly connected with the first end of the first outer cylinder, and the second end of the first inner tube is There is a positioning joint for blocking the sealing piston, and a blocking part for blocking the first end of the energy storage spring is fixed between the middle part of the first inner tube and the middle part of the first outer cylinder; the pulse oscillation generator includes a second outer cylinder and a second outer cylinder. The inner tube, the second inner tube is provided with a helical rotor rotatably arranged in the second inner tube.

Description

technical field [0001] The invention relates to the field of hydrate exploitation, more particularly, to a hydrate pulse jet oscillation tool. Background technique [0002] Hydrates are mainly present in the seabed and terrestrial permafrost, with high mud content and fine particles. During the mining process, the natural gas and water generated with the decomposition of hydrates can easily cause gas and water in the process of reservoir transportation. The fine particles in the formation migrate, causing blockage near the wellbore and water flooding in the wellbore. By using the pulsed jet oscillation blockage removal technology, the pulsating impinging jet is used to generate a strong periodic pressure alternating effect on the reservoir near the wellbore, promoting The ultra-fine particles in the pore wall of the reservoir are loosened, peeled off and separated, thereby dredging the pores, solving the blockage of ultra-fine particles in the hydrate reservoir, removing the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B21/00
CPCE21B21/00
Inventor 宁波于彦江秦绪文申凯翔周佳维黄芳飞冯起赠罗志远欧芬兰刘双莹
Owner GUANGZHOU MARINE GEOLOGICAL SURVEY
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