Rutledge, James T. and Phillips, Scott (2002) A comparison of microseismicity induced by gel-proppant- and water-injected hydraulic fractures, Carthage Cotton Valley gas field, East Texas. In: Society of Exploration Geophysicist, International Exposition and 72nd Annual Meeting, October 6 - 11, 2002, Salt Lake City.
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Rutledge_2002_A COMPARISON OF MICROSEISMICITY INDUCED BY GEL-PROPPANT- AND WATER-INJECTED HYDRAULIC FRACTURES, CARTHAGE COTTON VALLEY GAS FIELD, EAST TEXAS.pdf - Published Version Download (1MB) | Preview |
Abstract
We have improved the location precision and computed focal mechanism of microearthquakes induced during a series of hydraulic fracture completions within the Cotton Valley formation of East Texas. Conventional gel-proppant reatments and treatments using treated water and very low proppant concentrations (waterfracs) were monitored. Waterfracs have been shown to be just as effective as the conventional gelproppant treatments in Cotton Valley reservoirs, but at greatly reduced cost (Mayerhofer and Meehan, 1998). Comparison of the seismicity induced by the two treatment types show similar distributions of event locations and focal mechanisms for common depth intervals. We interpret the induced seismicity to be primarily controlled by the natural fracture geometry and independent of treatment design. By implication, we expect the effectiveness of shear-induced fracture propping to be independent of the treatment fluid in Cotton Valley reservoirs.
| Item Type: | Conference or Workshop Item (Paper) |
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| Subjects: | Methodology > Method and procesing > Collective properties of seismicity Methodology > Method and procesing > Technology-seismicity interaction Region > USA > Texas > Cotton Valley Inducing technology > Unconventional hydrocarbon extraction |
| Project: | IS-EPOS project |