A device and method for directional hydraulic sandblasting and perforating fracturing
A technology of hydraulic injection and pore pressure, applied in the field of oil field fracturing, can solve the problems of poor formation fracturing effect, inability to guarantee the maximum principal stress direction of the ejector, short formation cracks, etc., to achieve good fracturing effect and improve fracturing operation. effect of effect
Active Publication Date: 2022-03-01
PETROCHINA CO LTD
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Problems solved by technology
[0005] Since the existing technology cannot guarantee that the nozzle of the injector is aligned with the maximum principal stress direction of the formation after the fracturing string is lowered into the wellbore casing, the formation fractures generated in the formation are relatively short. Therefore, the fracturing provided by the prior art The fracturing device has a poor fracturing effect on the formation
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[0075] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0076] In the first aspect, the embodiment of the present invention provides a directional hydraulic sand blasting perforation fracturing device, as attached figure 1 As shown, the fracturing device includes: a fracturing string, a casing hanger for hanging the fracturing string in the wellbore casing X, and the fracturing string includes: Positioning nipple 1, multiple injectors 2, plug 3, directional connector 4, directional assembly 5 for the secondary connection. Wherein, the directional connector 4 is arranged between two adjacent injectors 2 for making the nozzles 201 on the side walls of the multiple injectors 2 have the same direction. The orientation component 5 is used to obtain the orientation of the nozzle 201 and transmit...
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The invention discloses a directional hydraulic sandblasting and perforating fracturing device and method, belonging to the field of oil field fracturing. The fracturing device includes: a fracturing string, and a casing hanger for suspending the fracturing string in the casing of the wellbore. Sections, Multiple Injectors, Plugs, Oriented Connections, Oriented Assemblies. Wherein, the directional connecting piece is arranged between two adjacent injectors, and is used for aligning the nozzles on the side walls of the multiple injectors. The orientation component is used to obtain the orientation of the nozzle, and transmit the orientation information of the nozzle to the wellhead testing system. The fracturing device provided by the invention ensures that the nozzles on each injector can be aligned with the maximum principal stress direction of the stratum during the fracturing operation, and the effect on the fracturing operation of the stratum is better.
Description
technical field [0001] The invention relates to the field of oilfield fracturing, in particular to a directional hydraulic sandblasting and perforating fracturing device and method. Background technique [0002] In the process of oil field production, the production capacity of oil wells will decrease after a certain stage of production. Therefore, in order to improve the flow environment of oil underground and increase the output of the oil well, it is necessary to perform fracturing production on the oil well, so it is very necessary to provide a fracturing device. [0003] The prior art provides a fracturing device, including: a casing hanger and a fracturing string. Wherein, the casing hanger is arranged at the wellhead for hanging the fracturing string. The fracturing string includes: a positioning nipple connected sequentially from top to bottom through multiple oil pipes, multiple injectors, and a plug for sealing the bottom end of the fracturing string. Two rows o...
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IPC IPC(8): E21B43/26
Inventor 胡金铜廖兴松翁博张宏伟张晓春韩增辉杜晓霞王明燕姜晓波王文韬舒畅杨天成赵玉东田福春
Owner PETROCHINA CO LTD