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SYSTEMS AND METHODS DERIVING HYDRAULIC FRACTURE GROWTH FROM MICROSEISMICITY ANALYSIS
SYSTEMS AND METHODS DERIVING HYDRAULIC FRACTURE GROWTH FROM MICROSEISMICITY ANALYSIS
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机译:由微震分析得出水力断裂增长的系统和方法
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摘要
An illustrative monitoring system for a hydraulic fracturing operation includes: a data acquisition module collecting microseismic signals from a subterranean formation undergoing a hydraulic fracturing operation; a processing module implementing a monitoring method; and a visualization module that displays an estimate or prediction of fracture extent. The monitoring method implemented by the processing module includes: deriving microseismic event locations and times from the microseismic signals; fitting at least one fracture plane to the microseismic event locations; projecting each microseismic event location onto at least one fracture plane; determining a time-dependent distribution of the projected microseismic event locations; calculating one or more envelope parameters from the time-dependent distribution; and generating an estimate or prediction of fracture extent using the or more envelope parameters. The envelope parameters may include an exponent of a time-power law, and said generating may include re-fitting the fracture plane if the exponent isn't approximately one-half.
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