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Scirj Volume XIII, Issue III, March 2025 Edition
ISSN: 2201-2796

GEOCALCULATOR, AN APPLICATION SOFTWARE FOR THE DETERMINATION OF VOLUME OF SHALE AND FORMATION WATER RESISTIVITY FROM SP LOGS

Benson Akinbode Olisa, Adedamola Bill Folaranmi

Abstract: Formation evaluation in hydrocarbon exploration is focused on determining productive reservoirs in wells, if any, and the volume of hydrocarbon in said reservoirs. The volume of hydrocarbon in a reservoir depends on the water saturation, a function of its formation water resistivity. The calculation of formation water resistivity, volume of shale and hydrocarbon saturation from SP logs is dependent on several Petro-physical parameters which require complex calculations using many charts that are time consuming and error prone. This project designs and incorporates the use of a computer software designed to standardize results, reduce margin of error and the time spent on calculating these Petro-physical parameters which is especially valuable when working on data from a large number of reservoirs and wells. A standalone application software was designed for this project in Unity and the results were compared versus standard chart corrected calculations using data from existing literature. The maximum deviation falls within a rounding error at minimum and up to 7.2464% as formation water resistivity increases. The value falls well below 10% and is reasonably in range of values normally observed in the field and from chart calculated data. The calculated data allowed the detection of suspected errors in the published results of existing literature. The software has proven to be a fast technique of estimating formation water resistivity, volume of shale and hydrocarbon saturation and reduces the ambiguity in the use of charts for correcting Petro-physical parameters in well log analysis.

Reference this Paper: GEOCALCULATOR, AN APPLICATION SOFTWARE FOR THE DETERMINATION OF VOLUME OF SHALE AND FORMATION WATER RESISTIVITY FROM SP LOGS by Benson Akinbode Olisa, Adedamola Bill Folaranmi published at: "Scientific Research Journal (Scirj), Volume XIII, Issue III, March 2025 Edition, Page 1-18 ".

Search Terms: Calculator, petrophysics, software, logs, hydrocarbon

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