Hydraulic fracturing seismoelectric signal combined processing method
A technology of joint processing and hydraulic fracturing, applied in geophysical measurement, instruments, etc., can solve the problems of inconvenient signal acquisition, easy mutual conversion of electromagnetic signals, difficult data processing, etc., to improve computing efficiency, save manpower, and enhance practicability Effect
Active Publication Date: 2020-09-11
JILIN UNIV
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Problems solved by technology
[0007] The technical problem to be solved by the present invention is to provide a combined processing method for hydraulic fracturing seismic and electrical signals, which solves the problems in the background technology of vibration signals containing fluid media, electromagnetic signals are easy to convert each other, signal acquisition is inconvenient, data is difficult to process, and ultrasonic energy conversion is required. Disadvantages of the device as an active excitation source
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[0042] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0043] see figure 1 combine figure 2 As shown, a hydraulic fracturing seismic signal acquisition system is mainly composed of multiple hydraulic fracturing seismic signal acquisition station units 21 with the same function as the center and arranged in a star array for outward emission (see Image 6 ), each acquisition station unit 21 includes a STM32 central control unit 13, a real-time clock 14, an SD card 15, a network communication module 16, etc., and the two input ends of the STM32 central control unit 13 are respectively connected to the microseismic signal processing channel 17 and the seismic signal Signal proce...
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The invention relates to a hydraulic fracturing seismoelectric signal combined processing method. The method comprises the following steps: acquiring length and width information of a crack by utilizing a microseism signal in an acquisition system and an imaging technology; acquiring direction information of the crack by utilizing a seismoelectric signal in the acquisition system; and in combination with data processing results of the two methods, carrying out seismoelectric joint data interpretation, and obtaining complete length, width and trend parameters of the crack. Under the condition that other excitation sources are not needed in the hydraulic fracturing process, microseismic signals generated by rock stratum fracture and seismoelectric signals generated by the seismoelectric effect can be monitored, and accurate evaluation of parameter information such as the position, the direction, the length and the width of a fracturing crack is completed.
Description
technical field [0001] The invention belongs to the technical field of geophysical exploration and research related to hydraulic fracturing, in particular to a joint processing method for hydraulic fracturing seismic and electrical signals. Background technique [0002] With the development of society, my country's demand for oil is increasing year by year, but domestic oil production has not increased significantly. In order to meet the huge demand for oil, we can only rely on imported oil. At present, the hydraulic fracturing method in the world can effectively increase the production of oil fields. By injecting fracturing fluid underground to form artificial fractures, the permeability conditions of oil layers can be improved, blockages can be cleared, and oil well production can be increased. The accurate description of fracturing fracture parameters will directly relate to the evaluation of fracturing effect and the selection of fracturing operation in the next step. T...
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IPC IPC(8): G01V11/00
CPCG01V11/007
Inventor 王俊秋雍皓罗世豪马立伟孙佳
Owner JILIN UNIV