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Pulse wave fracturing device and method

A pulse wave and fracturing technology, which is applied in the direction of earthwork drilling, production fluid, wellbore/well components, etc., can solve the problems of single hydraulic fracture shape, small oil drainage area, weak stimulation effect, etc., and achieve large adjustable space , The effect of performance safety

Inactive Publication Date: 2020-06-19
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Traditional fracturing technology mainly has the following problems in oilfield development and stimulation: the extension orientation of artificial fractures is greatly controlled by the in-situ stress orientation (artificial fractures extend along the direction of the maximum horizontal principal stress), and it is difficult for remaining oil in other orientations to pass through. Effective production of fractures; hydraulic fractures have a single shape, small oil drainage area, and weak stimulation effect; there is a certain potential damage to water-sensitive formations

Method used

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  • Pulse wave fracturing device and method

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with accompanying drawing.

[0027] figure 1 It schematically shows the pulse wave fracturing device according to an embodiment of the present invention. According to the pulse wave fracturing device of the present invention, it can meet the operation of relatively deep wells, and at the same time, it is equipped with a delay ignition device, which leaves enough operation time for the operation after pressing, so that the operations such as opening and closing valves on the ground after pressing, and firing guns in abnormal situations are easier. Safety.

[0028] Such as figure 1 As shown, the pulse wave fracturing device described in this embodiment includes a pulse wave fracturing gun 1 . The pulse fracturing gun can release high-pressure gas, and the pulse wave generated by the high-pressure gas can effectively fracture the bottom layer. The pulse wave fracturing gun 1 is filled with fuel, and t...

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Abstract

The invention relates to a pulse wave fracturing device and method, and belongs to the field of oil exploitation. The pulse wave fracturing device comprises a pulse wave fracturing gun which is filledwith fuel and configured to eject high pressure gas by igniting the fuel and a control device which is connected with the pulse wave fracturing gun and can be controlled by the ground so as to ignitethe fuel in the pulse wave fracturing gun; and the control device is constructed to be capable of controlling the delay time of ignition. By means of the pulse wave fracturing device and method, deepwell operation can be met, meanwhile, a delay ignition device is further arranged, sufficient operation time is reserved for operation after pressing, and operation such as valve opening and closingon the ground after pressurizing and gun lifting under abnormal conditions is safer.

Description

technical field [0001] The invention relates to a pulse wave fracturing device and method, belonging to the field of petroleum exploitation. Background technique [0002] Hydraulic fracturing or acid fracturing technology is currently the main method of increasing production in oilfield development at home and abroad. At each stage of oilfield development, it is necessary to perform fracturing on various reservoirs to increase production and improve development efficiency. Traditional fracturing technology mainly has the following problems in oilfield development and stimulation: the extension orientation of artificial fractures is greatly controlled by the in-situ stress orientation (artificial fractures extend along the direction of the maximum horizontal principal stress), and it is difficult for remaining oil in other orientations to pass through. The hydraulic fractures can be produced effectively; the hydraulic fractures have a single shape, the oil drainage area is sm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/26
CPCE21B43/26
Inventor 赵海洋李新勇赵兵刘志远李楠何晓波耿宇迪张雄罗攀登王洋张俊江侯帆房好青
Owner CHINA PETROLEUM & CHEM CORP
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