Hydrofracture secondary sound wave analogy method and fracturing fracture monitoring technology evaluation method

Abstract

The invention discloses a hydrofracture secondary sound wave analogy method and a fracturing fracture monitoring technology evaluation method. The hydrofracture secondary sound wave analogy method and the fracturing fracture monitoring technology evaluation method can achieve effective evaluation to microseism monitoring technology and contribute to improvement of effects of a horizontal well multistage staged fracture. According to the hydrofracture secondary sound wave analogy method, at least two sound wave emission devices are arranged in a well which has know spatial locations, ground controls working parameters of the sound wave emission devices to simulate secondary sound wave characteristics created by rock fracture in the process of hydrofracture, spatial locations, sound production time, sound production orders and other parameters of the transmitted sound wave emission devices are assured and recorded, at the same time, an evaluated fracturing fracture monitoring technology is used for detecting the simulated secondary sound wave characteristics, locations and various transmitting information of the sound wave emission device are sought, sound wave information and explanation results received by the fracturing fracture monitoring technology are compared with known stimulated transmitting parameters, and accuracy and reliability of the monitoring technology are detected and evaluated.

Description

technical field [0001] The invention belongs to the interpretation technology of hydraulic fracturing microseismic monitoring technology used in the development process of oil and gas fields, especially the hydraulic fracturing secondary sound wave simulation method and the evaluation method of fracturing fracture monitoring technology, which can realize the effective evaluation of microseismic monitoring technology, It helps to improve the effect of multi-stage and staged fracturing in horizontal wells. Background technique [0002] The microseismic technology applied in the field is divided into two types: surface and underground. The basic technical principles are as follows: during hydraulic fracturing, secondary sound waves will be generated with the rupture of rocks. To receive and record the transmitted acoustic wave information, and then use signal processing and interpretation techniques to describe and determine the spatial position and related parameters of the ac...

AI Technical Summary

Problems solved by technology

However, due to factors such as weak acoustic signals, ground interference, complex geological conditions, and limitations of instruments and interpretation techniques, the accuracy of the interpretation results has been greatly questioned.

However, domestic microseismic fracturing monitoring technology is basically in the stage of technical research and technical reserve, especially in data interpretation is still relatively backward

[0003] In order to understand the real situation of hydraulic fracturing fractures, sometimes two different fracture monitoring technologies are used to monitor and interpret a well, but the interpretation results are often quite different, and it is impossible to judge which method is correct, which brings many problems to the site construction. Puzzled

Especially for multi-stage and staged fracturing of horizontal wells, the fracture extension is very complicated. If the fracture characteristics cannot be understood, the construction parameters cannot be adjusted and optimized in time, which will affect the fracturing effect and the well pattern layout of the block.

[0004] Through the investigation of domestic and foreign technologies, it is found that the existing hydraulic fracturing fracture monitoring technologies use methods such as geological theoretical modeling, conditional assumptions, and elimination of clutter interference to make the interpretation results closer to reality, but these assumptions often only consider The ideal state cannot truly reproduce the field reality, so an evaluation method for fracturing fracture monitoring technology is urgently needed to determine the reliability of the interpretation results and guide the field selection