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Hydraulic jet infinite stage fracturing device and fracturing method

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

Active Publication Date: 2020-06-16
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

[0081] 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.

[0082] 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 jetting infinite-stage fracturing device and a fracturing method. The hydraulic jetting infinite-stage fracturing device comprises a body, a sliding sleeve, a ballseat and a variable-diameter ball, wherein the body extends in the axial direction and is in a cylinder shape, and a nozzle capable of enabling an inner cavity and the exterior to communicate is arranged on the side wall of the body; the sliding sleeve is arranged in the body in a sleeved mode and provided with a first position where the nozzle is closed, and a second position where the nozzle isopened, and the sliding sleeve can slide in the axial direction of the inner wall of the box so as to be switched to be at the second position from the first position; the ball seat is arranged in thebody in a sleeved mode and fixedly connected with the sliding sleeve; the variable-diameter ball is arranged in the ball seat and provided with a first channel and a second channel, and the radius ofthe first channel is less than that of the second channel; the variable-diameter ball has a first state and a second state, wherein the variable-diameter ball can be plugged by a sealing part in thesecond state; and when the position of the sliding sleeve is switched, a variable-diameter ball of an adjacent fracturing device is switched to be in the second state from the first state. The hydraulic jetting infinite-stage fracturing device and the fracturing method can achieve infinite-stage fracturing, the fracturing device is simple in structure and convenient to operate, one-trip pipe column operation and fixed crack initiation can be achieved, and the fracturing operation efficiency is high.

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 Patents(China)
IPC IPC(8): E21B43/26
CPCE21B43/26
Inventor 李敬彬刘鑫陆沛青张广清黄中伟田守嶒
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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