Abstract
Theoretical models have recently opened up the possibility that extensive induced rock fracturing can accompany many normal oilfield waterfloods, particularly in some North Sea reservoirs. Additionally, multiple sets of natural fractures in flooded reservoirs are likely to have anisotropy in conductivity governed partly by local earth stresses. If fracturing were implicitly involved in the processes of fluid movement through a reservoir, then one could anticipate a relationship between the preferred direction of water movement in a flood and the azimuth of local maximum horizontal principal stress. Modern-day earth stress orientation data are sparse, but coherent trends are apparent from published measurements across North America and a growing number of measurements in North Sea wells.
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© 1990 Norwegian Institute of Technology
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Heffer, K.J., Dowokpor, A.B. (1990). Relationship between Azimuths of Flood Anisotropy and Local Earth Stresses in Oil Reservoirs. In: Buller, A.T., Berg, E., Hjelmeland, O., Kleppe, J., Torsæter, O., Aasen, J.O. (eds) North Sea Oil and Gas Reservoirs—II. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0791-1_21
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DOI: https://doi.org/10.1007/978-94-009-0791-1_21
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