HYDRAULIC FRACTURING SEISMIC MONITORING IN SHENGLI OILFIELD
2025-11-11
Objective
To perform real-time acquisition of microseismic signals induced by hydraulic fracturing, enabling the identification and analysis of microseismic events. The monitoring system supports timely fracture propagation tracking and provides technical guidance for fracturing operations in oil wells.
Project Overview
The project site is located in the Shengli Oilfield, primarily consisting of sorghum and corn fields, with a few ditches and rivers scattered throughout the area. A total of 7seismic survey lines and 55 monitoring stations were deployed across the site.Method: Microseismic monitoring was employed, with geophones positioned at distances ranging from approximately 250 meters to 3,000 meters from the wellhead.The spacing between monitoring stations varied between 200 and 400 meters.
Equipment
47 units of Ant-1C 5 Hz single-component nodal seismometers & 8 units of Ant-3CN 5 Hz three-component nodal seismometers
Performance
A total of 519 fracturing-induced microseismic events were identified. Source mechanism inversion was performed on the detected events, and typical hydraulic fractur-ing microseismic fractures were interpreted. The spatial characteristics of the fractures — including strike, dip, length, width, and height— were determined for the target well.
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