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SEG International Exposition

58ASC presented two technical papers at the Society of Exploration Geophysicist (SEG) International Exposition and 79th Annual Meeting to held in Houston, Texas (USA) between 25-30 October 2009.

The poster, entitled “Microseismic analysis for the quantification of crack interaction during hydraulic stimulation” presented the application of the cluster index to identify the seismic activity corresponding to the development of connected fracturing that creates paths for fluid transmission during hydraulic stimulations. In this approach, the location of induced microseismic events is combined with their source dimension, interpreted from the frequency content, to interpret the degree of interaction between the induced fractures. The spatial and temporal evolution of the degree of interaction is provided by the cluster index, which allows the characterization of events in terms of their potential interactivity. Results are presented from four example well stimulations, describing two distinct behavior patterns for damage evolution. Full abstract is available here (SEG website).

An oral communication entitled “Using Continuous Microseismic Records for Hydrofracture Diagnostics and Mechanics” presented a novel technique for better understanding the fracture network evolution during hydrofracture treatments using continuous microseismic records. the method also provoides a tool for diagnostic evaluation of recorded microseismic data. The continuous microseismic amplitude record includes the full history of the seismic energy response of the rock mass recorded at a given geophone. Case studies are presented illustrating the use of this technique for supplementing microseismic locations to better understand the evolution of the fracture treatment, and to diagnose the condition of a given data set, so as to design criteria for more effective processing of the discrete microseismic events. Full abstract can be found here (SEG website).







Full information on the technical programme is available at SEG's website .

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