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Hydraulic jet infinite-stage fracturing device and fracturing method

A hydro-jet, infinite-level technology, applied in earth-moving drilling, production of fluids, wellbore/well components, etc., can solve problems such as poor versatility and complex structure

Active Publication Date: 2019-10-29
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] To sum up, the existing infinite-stage fracturing tools generally have the problems of complex structure, multiple tripping and lowering of pipe strings, and poor versatility

Method used

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  • Hydraulic jet infinite-stage fracturing device and fracturing method
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  • Hydraulic jet infinite-stage fracturing device and fracturing method

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Embodiment Construction

[0076] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the scope of protection of this application.

[0077] It should be noted that when an element is referred to as being “disposed on” another element, it may be directly on the other element or there may be another element in between. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or it may be present inte...

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Abstract

The invention discloses a hydraulic jet infinite-stage fracturing device and a fracturing method. The fracturing device comprises a body, a first sliding sleeve, a butt joint device and a second sliding sleeve; the body extends in the axial direction and is cylindrical, and a nozzle capable of communicating an inner cavity and the outer portion is arranged on the side wall of the body; the first sliding sleeve is arranged in the body in a sleeved manner, the first sliding sleeve has a first position enabling the nozzle to be closed and a second position enabling the nozzle to be opened, and the sliding sleeve can axially slide along the inner wall of the body to switch the positions; the butt joint device is fixedly connected with the first sliding sleeve, a limiting portion is arranged atthe end, far away from the first sliding sleeve, of the butt joint device, and the limiting portion has a first state and a second state; the limiting portion can be sealed by a sealing member in thesecond state; the second sliding sleeve is arranged in the body in a sleeved manner, and when the first sliding sleeve switches the positions, a second sliding sleeve of an adjacent fracturing devicecan be driven to slide to switch the limiting portion from the first state to the second state. The fracturing device and the fracturing method can realize infinite-stage fracturing, and the fracturing device is simple in structure and convenient to operate, can realize one pipe column operation and fixed-point cracking and has high fracturing operation efficiency.

Description

technical field [0001] The present application relates to the technical field of fracturing in oil and gas fields, in particular to a hydraulic jet infinite stage fracturing device and a fracturing method. Background technique [0002] With the rapid economic development, the development of conventional natural gas resources can no longer meet the needs of economic development. Unconventional natural gas resources have become the object of exploitation due to their huge reserves, concentrated distribution, and increasingly advanced development technology. Realizing the industrial exploitation of unconventional natural gas will be of great significance to alleviating the energy supply situation and ensuring national energy security. [0003] Hydraulic fracturing technology is a necessary means to efficiently develop unconventional natural gas and maintain its economical exploitation. Among them, the hydraulic jet fracturing technology integrates hydraulic sandblasting, frac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/26
CPCE21B43/26
Inventor 李敬彬刘鑫贺振国黄中伟张广清田守嶒盛茂
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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