... petrophysical properties. The study leverages the published six hundred core measurements on synthetic samples, clean sand, shaly sand, clean carbonates, and shaly carbonates selected from different reservoirs. The analysis of this database establishes the plausible correlative link of electrical, acoustic...

... in identifying the formation evaluation issues above. Addition of NMR. logging measurements to formation evaluation programs in subsequent wells has led to significant improvements in log-based estimates of both lithology and porosity. log analysis calculation clean sand mudstone water saturation...

... to express the free water and the bound water term. The two cementation exponents are estimated in the adjacent clean sand and pure shale. The results of extensive laboratory experiments, described in this paper, show that the use of two cementation exponents to characterize electrical behavior in shaly sand...

... counter-ion conductivity conductivity shaly sand log analysis Thickness counter-ion conductivity double layer equation clean sand shaly sand conductivity model expression variable equivalent counter-ion conductivity SPWLA TWENTY-SIXTH ANNUAL LOGGING SYMPOSIUM, JUNE 17-20, 1985 A SHALY SAND...

...-bearing sand to the expected conductivity of clean sand with the same water salinity, porosity, and pore geometry. On this principle, a simple method for calculating Cx from log-derived porosity has been developed. The procedures of the method extend the application of logging data from water-bearing sand...

... and gravel-coarse sand reservoirs. Examples have been presented. log analysis irreducible water saturation shaliness evaluation mineral Upstream Oil & Gas lithology factor method identification saturation Artificial Intelligence clean sand bearing bed hydrocarbon reservoir well...

... ABSTRACT In evaluating a heavy oil accumulation in Wyoming for an enhanced recovery pilot, log analysis with conventional "clean sand" evaluation techniques was found to yield computed oil saturations much less than core saturations. The formation involved was the Tensleep, which is generally...