British Journal of Earth Sciences Research (BJESR)

EA Journals

Archie Parameters

DEVELOPMENT OF COMPUTER APPLICATION TO COMPUTE ARCHIE PARAMETERS FROM WELL LOG DATA (Published)

Computation of water saturation requires some parameters; tortuosity factor a, cementation coefficient m, and saturation exponent, n; collectively referred to as Archie parameters. Values 1, 2, and 2 are assigned to the parameters a, m and n respectively; without recourse to the in-homogeneities in local geology, due to the rigours involved in determining site-specific values. Arch_Param, a computer program written around the ‘conventional’ Archie parameter determination technique, saves the rigours and automate the process of determining these parameters for any oil field from well data, and consequently, enhances the accuracy of computed hydrocarbon saturation. It runs on computers with the python interpreter installed. Arch_Param was used to compute Archie parameters for three wells within PATJ oil field, Niger Delta. The study revealed that a, ranged from 1.00 to 1.49 and averaged 1.29; m, from 1.72 to 2.21 and averaged 1.94 and n, from 1.26 to 6.58. Computing Archie parameters for the different reservoir revealed that tortuosity factor a, decreased with depth, cementation exponent m, increased with depth while saturation coefficient n, had random values.

Keywords: Archie Parameters, Cementation Coefficient and Saturation Exponent, Tortuosity Factor, Water Saturation

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