Directional hydraulic sandblasting perforating fracturing device and method
A technology of hydraulic injection and pore pressure, applied in the field of oil field fracturing, can solve the problems of inability to guarantee the maximum principal stress direction of the ejector, poor formation fracturing effect, short formation fractures, etc., so as to improve the fracturing operation effect and fracturing effect. Good results
Active Publication Date: 2019-06-25
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 perforating fracturing device and a method, and belongs to the field of oilfield fracturing. The fracturing device comprises a fracturing string, a casing hanger used for hanging the fracturing string in a wellbore casing, the fracturing string comprises an orientation spool connected sequentially by a plurality of oil tubes from top down, a plurality of ejectors, a screwed plug, directional connectors and a directional assembly, wherein the directional connectors are arranged between every two adjacent ejectors and are used for making nozzles on the side walls of the plurality of ejectors face toward a same direction; and the directional assembly is used for acquiring the orientation of the nozzles, and sending orientation information of the nozzles to a wellhead test system. According to the fracturing device provided by the invention, the nozzle on each ejector is ensured to align with the direction of a stratum maximum principal stress when a fracturing operation is performed, and a relatively good effect of the fracturing operation of a stratum is realized.
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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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