Method, system and device for monitoring fracturing in real time under oil and gas well

Abstract

The invention discloses a method, a system and a device for monitoring fracturing in real time under an oil-gas well. The method for monitoring fracturing comprises the following steps: acquiring fracturing potential data; preprocessing the fracturing potential data to eliminate a background field and direct current deviation and obtain optimized potential data; according to the optimized potential data, obtaining a fracturing wave volume and a plurality of point cloud coordinates; and establishing a three-dimensional fracturing volume model according to the fracturing wave volume and the plurality of point cloud coordinates. According to the underground real-time fracturing monitoring method for the oil and gas well, the fracturing wave and range composed of multiple fracturing wave and volume volumes and multiple sets of point cloud coordinates are obtained in multiple time periods, and therefore the three-position fracturing volume model which evolves continuously and is superposed and gradually changed at multiple moments is established; the real-time fracturing situation can be quantitatively represented in the time lapse of monitoring the fracturing construction process, and the problem that the fracturing is difficult to quantitatively evaluate at present is solved.

Description

technical field [0001] The invention relates to the technical field of oil and gas fracturing construction and exploitation, in particular to a real-time monitoring fracturing method, system and device in an oil and gas well. Background technique [0002] With the continuous improvement of oil and gas extraction technology, various low-permeability and tight oil and gas reservoirs have gradually become important places for oil and gas extraction. In order to extract oil and gas from these low-permeability and tight reservoirs, it is often necessary to use artificial fracturing technology to form artificial fracturing fracture networks in low-permeability and tight reservoirs. During the fracturing process, it is necessary to understand the current fracturing effect, so as to guide the fracturing operation and achieve more optimized gas and oil production results. Therefore, establishing the volume distribution of these low-permeability and tight oil-gas fractures has become...

AI Technical Summary

Problems solved by technology

For this reason, a method for real-time monitoring of fracturing in oil and gas wells is proposed, which solves the problem that the current fracturing technology lacks quantitative analysis and utilization of formation potential signals, and it is difficult to obtain a more intuitive and detailed real-time fracturing process.

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