A hydraulically driven hydraulic jet infinite stage fracturing device

A technology of hydraulic jetting and hydraulic transmission, applied in wellbore/well components, production fluid, sealing/packing, etc., can solve the problems of limited fracturing series, limited, and inability to meet the needs of large-scale fracturing operations, etc. Achieve the effect of high versatility, high security and simple structure

Active Publication Date: 2021-04-13
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, limited by the size of the sliding sleeve, the number of fracturing stages of this technology is limited, which cannot meet the needs of large-scale fracturing operations

Method used

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  • A hydraulically driven hydraulic jet infinite stage fracturing device
  • A hydraulically driven hydraulic jet infinite stage fracturing device
  • A hydraulically driven hydraulic jet infinite stage fracturing device

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Embodiment Construction

[0062] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.

[0063] The specific implementations of the present invention described here are only for the purpose of explaining the present invention, and should not be construed as limiting the present invention in any way. Under the teaching of the present invention, the skilled person can conceive any possible modification based on the present invention, and these should be regarded as belonging to the scope of the present invention. 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 also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or interv...

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Abstract

The present invention is a hydraulically driven hydraulic jet infinite stage fracturing device, comprising at least two sequentially connected hydraulic jet fracturing spray gun structures; each hydraulic jet fracturing spray gun structure includes a spray gun body, and nozzles are connected to the upper part of the side wall of the spray gun body, A variable diameter sliding sleeve is set inside the spray gun body; a hydraulic cylinder cavity is set inside the spray gun body, and a hydraulic piston is installed in the hydraulic cylinder cavity. The short joint sleeve; the oil discharge chamber is formed between the bottom surface of the first ring body and the bottom of the cylinder cavity, and the oil outlet hole is arranged at the bottom of the oil discharge cavity, and the top surface of the compound diameter short joint sleeve and the bottom of the cylinder cavity An oil inlet chamber is formed between the tops, and an oil inlet hole is arranged on the top of the oil inlet chamber, and the oil outlet hole of the next stage communicates with the oil inlet hole of the adjacent upper stage through a hydraulic pipeline. The device has a simple structure, does not require mechanical isolation, can initiate fractures at fixed points, integrates perforation, fracturing, and isolation, and can realize multi-stage fracturing in one string operation.

Description

technical field [0001] The invention relates to the technical field of fracturing in oil and gas fields, in particular to a hydraulically driven hydraulic jet infinite-stage fracturing device. Background technique [0002] As important energy resources, oil and natural gas not only play an important role in daily life, but also provide a strong guarantee for my country's national defense construction. The rapid development of the national economy has put forward higher requirements for my country's oil and gas industry. According to the "Blue Book of China's Oil and Gas Industry Development Analysis and Prospect Report (2018-2019)", China's crude oil processing volume and apparent oil consumption in 2018 doubled. Breaking through 600 million tons, the dependence on foreign oil is approaching 70%, and natural gas consumption continues to maintain strong growth. Faced with such a severe situation, it is extremely urgent to continue to increase efforts to increase oil and natur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/26E21B43/114E21B33/12
CPCE21B33/1208E21B43/114E21B43/26
Inventor 李敬彬李欢黄中伟张广清李根生田守嶒刘鑫
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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