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Weyburn seal capacity (view source)
Revision as of 21:59, 24 February 2014
, 21:59, 24 February 2014→Estimating rbt
==Estimating r<sub>bt</sub>==
==Estimating r<sub>bt</sub>==
A generally accepted concept is that oil migrates after filling only the minimum possible percentage of the largest pore throats that is required to establish a continuous, thread-or rope-shaped channel through the rock (e.g., .<ref name=ch09r14>Dembicki, H., Jr., Anderson, M., L., 1989, Secondary migration of oil: experiments supporting efficient movement of separate, buoyant oil phase along limited conduits: AAPG Bulletin, vol. 73, no. 9, p. 1018–1021.</ref><ref name=ch09r8>Catalan, L., Xiaowen, F., Chatzis, I., Dullien, F., A., L., 1992, An experimental study of secondary oil migration: AAPG Bulletin, vol. 76, no. 5, p. 638–650.</ref><ref name=ch09r30>Hirsch, L., M., Thompson, A., H., 1995, Minimum saturations and buoyancy in secondary migration: AAPG Bulletin. vol. 79, no. 5, p. 696–710.</ref> This is the breakthrough or critical nonwetting phase saturation. Clearly, estimating R<sub>bt</sub> or the size of the largest connected pore throats that control hydrocarbon breakthrough is critical to this analysis.
A generally accepted concept is that oil migrates after filling only the minimum possible percentage of the largest pore throats that is required to establish a continuous, thread-or rope-shaped channel through the rock<ref name=ch09r14>Dembicki, H., Jr., Anderson, M., L., 1989, [http://archives.datapages.com/data/bulletns/1988-89/data/pg/0073/0008/1000/1018.htm Secondary migration of oil: experiments supporting efficient movement of separate, buoyant oil phase along limited conduits]: AAPG Bulletin, vol. 73, no. 8, p. 1018–1021.</ref><ref name=ch09r8>Catalan, L., Xiaowen, F., Chatzis, I., Dullien, F., A., L., 1992, [http://archives.datapages.com/data/bulletns/1992-93/data/pg/0076/0005/0000/0638.htm An experimental study of secondary oil migration: AAPG Bulletin], vol. 76, no. 5, p. 638–650.</ref><ref name=ch09r30>Hirsch, L., M., Thompson, A., H., 1995, [http://archives.datapages.com/data/bulletns/1994-96/data/pg/0079/0005/0650/0696.htm Minimum saturations and buoyancy in secondary migration]: AAPG Bulletin. vol. 79, no. 5, p. 696–710.</ref> This is the breakthrough or critical nonwetting phase saturation. Clearly, estimating R<sub>bt</sub> or the size of the largest connected pore throats that control hydrocarbon breakthrough is critical to this analysis.
There are at least three ways to estimate R<sub>bt</sub>.
There are at least three ways to estimate R<sub>bt</sub>.