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MITCHELL, ROBERT J., Schlumberger Well Services, Amarillo, TX, and SCOTT J. TAYLOR, Taylor Energy Corporation, Amarillo, TX

ABSTRACT: LOTUS(tm) Template for Calculating Well Logs

Calculating well logs is a time-consuming process. This template uses input parameters consisting of well name, location, county, state, formation name, starting depth, repeat interval, Previous HitresistivityNext Hit of shale, and irreducible bulk volume water, which provides heading information for print outs. Required information from basic well logs are porosity, conductivity (optional), formation Previous HitresistivityNext Hit, Previous HitresistivityNext Hit of the formation water for the zone being calculated, Previous HitresistivityNext Hit of the mud filtrate, the porosity cutoff for pay in the zone being calculated, and the saltwater saturation cutoff for the pay zone. These parameters are used to calculate Previous HitapparentNext Hit water Previous HitresistivityNext Hit, saltwater saturation, bulk volume water, ratio of Previous HitapparentNext Hit water Previous HitresistivityNext Hit to input water Previous HitresistivityNext Hit, irreducible sa twater saturation, Previous HitresistivityTop volume of shale, permeability, and a derived porosity value. A print out of the results is available through the lotus print function. Using this template allows maximum control of the input parameters and reduces hand calculation time.

AAPG Search and Discovery Article #90991©1993 AAPG Mid-Continent Section Meeting, Amarillo, Texas, October 10-12, 1993.