Same-well microseism monitoring process in hydraulic crushing process

Abstract

The invention discloses a same-well microseism monitoring process in a hydraulic crushing process. The same-well microseism monitoring process includes the steps of establishing an initial speed model according to logging data, determining cracked tubular column according to the crushing process, connecting a three-component geophone with a ground apparatus through an armored cable, determining the spatial direction of the three-component geophone in a well and adjusting and optimizing a speed model, after positioning the three-component geophone and optimizing the speed model, crushing, picking microseism signals due to hydraulic crushing during the crushing process, analyzing and processing the picked microseism signals, and determining the crack space presentation and distribution rules according to the distribution of microseism event points in combination with a crushing curve. Through the effectively cooperation of the five technical means, the defects of ground array, near-surface and adjoining well underground microseism monitoring technologies can be overcome. The process flow is simplified, and the monitoring effect is improved.

Description

technical field [0001] The invention belongs to the technical field of petroleum fracturing, and in particular relates to a same-well micro-seismic monitoring process in the process of hydraulic fracturing. Background technique [0002] Real-time monitoring of oilfield production dynamics by microseismic methods is a frontier subject of widespread concern at home and abroad, and remarkable progress has been made. Microseismic monitoring technology has been widely used in water fracturing fracture monitoring, reservoir dynamic monitoring, water injection monitoring, etc. The field has been highly recognized by the petroleum industry. At present, microseismic has become a new direction for the development of geophysical technology. [0003] The principle of microseismic monitoring is a geophysical technology that monitors the impact, effect and underground state of production activities by observing and analyzing small seismic events generated in production activities. Its bas...

AI Technical Summary

Problems solved by technology

[0007] The main purpose of the present invention is to solve the problems of low signal-to-noise ratio, complex interference, difficult signal picking and complex downhole microseismic monitoring process of adjacent wells, which affect the production of monitoring wells or have no optional monitoring wells, etc. Through the combination of downhole optical fiber sensing microseismic monitoring and coiled tubing fracturing technology, the same well microseismic monitoring technology in the hydraulic fracturing process is formed, which makes up for the deficiencies of ground array, near surface and adjacent well downhole microseismic monitoring technologies, and simplifies microseismic monitoring. Seismic monitoring technology to improve the effect of micro-seismic monitoring