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Offset well test: an engineering study of Devonian shale production characteristics

Conference · · Proc., Intersoc. Energy Convers. Eng. Conf.; (United States)
OSTI ID:6824690
A reservoir interference test conducted in an established shale-gas field quantitatively determined the gas-production characteristics of the naturally fractured Devonian shale formation. From an established producing well and two newly drilled monitoring wells offsetting the producer on the secondary and primary regional fracture trends, engineers investigated the following reservoir properties: 1) gas flow characteristics, 2) orientation and distribution of the natural fractures, 3) gas storage and release mechanisms, and 4) the impact of directional flow on production practices. The test results indicate extreme reservoir permeability anisotropy, suggesting that the preferential well drainage pattern of the fractured shale is elliptical. Virtually all of the free gas is sorbed in the matrix, and natural fractures primarily provide conduits for gas transport. These findings affect infill drilling considerations and overall gas recovery efficiency from fractured shale.
Research Organization:
Dept. of Energy, Washington, DC
OSTI ID:
6824690
Report Number(s):
CONF-820814-
Conference Information:
Journal Name: Proc., Intersoc. Energy Convers. Eng. Conf.; (United States) Journal Volume: 17
Country of Publication:
United States
Language:
English