A FORTRAN program to introduce field-measured sedimentary logs into reservoir modelling packages

Abstract

Building reservoir-scale facies models of outcrops is a practice that improves the three-dimensional geological modelling of subsurface analogues. Facies modelling of outcrops can be achieved either with geostatistical or object-based methods, which in most cases require conditioning to field-measured sedimentary logs. DEVLOGS assists in producing input files from field-measured sedimentary logs to be loaded into standard reservoir modelling packages. This is achieved by using a number of georeferenced nodes along the sedimentary log trace, and placing the intermediate bed boundaries according to true thickness recorded in the sedimentary log. Moreover a number of operations to enable the correct loading of the sedimentary logs are also performed. The main benefit of DEVLOGS is to facilitate the loading of non-vertical logs, by using non-vertical logs, the conditioning of outcrop models it is not limited to favourable outcropping settings such as very step exposures or non-dipping strata.