Hydraulic fracturing seismic-electric joint detection system, detection method and field work method

Abstract

The invention relates to the technical field of prospection in hydraulic fracturing, and particularly relates to a hydraulic fracturing seismo-electric combined detection system which combines seismic data, electric data and seismo-electric data, a detection method and a field work method. The system comprises a transmitting system, a receiving system and a mobile terminal, wherein the transmitting system is arranged in a fracturing well and a return wheel via a pair of transmitting electrodes for transmitting electric signals; the receiving system comprises an acquisition station, an acquisition electrode connected with the acquisition station and a three-component geophone; the acquisition electrode is used for acquiring electric signals and seismo-electric signals during the fracturing process; the three-component geophone is used for converting vibration signals into electric signals and inputting the electric signals to the acquisition state; and the mobile terminal and the receiving system communicate, and through data of the acquisition receiving system, functions such as state query, parameter setting and data monitoring for the acquisition state in the receiving system are realized. A better fracture monitoring result during the hydraulic fracturing process can be acquired.

Description

technical field [0001] The invention relates to the technical field of exploration in hydraulic fracturing, specifically a hydraulic fracturing seismic-electric joint detection system, detection method and field work method that combine seismic data, electrical data and seismic data. Background technique [0002] With the development of the economy, the demand for oil and natural gas is increasing day by day. A large number of domestic oil and gas fields have entered the late stage of exploitation. Hydraulic fracturing is an important means in the exploitation of oil and gas fields. It mainly uses fracturing vehicles to inject high-viscosity fracturing fluid into oil layers. In order to make cracks appear, and then add proppant to fill the cracks, improve the permeability of oil and gas layers, thereby increasing oil and gas production. The direction, length, position, change and development degree of fractures during the fracturing process are important parameters for evalu...

AI Technical Summary

Problems solved by technology

Although this method can provide more accurate fracture results in the original electrical method or micro-seismic monitoring, it cannot effectively solve the ambiguity of the two exploration methods due to the weak micro-seismic signals and electrical signals in the fracturing process

And this method does not consider the mutual coupling between the geophysical fields when the two methods are measured at the same time, and the data processing is processed separately according to their own methods, which will lead to errors in the experimental results

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