Determination of Water Salinities in Hydrocarbon Bearing Reservoirs of Some Niger Delta Fields - Nigeria

摘要

The purpose of this study basically is to determine water salinity of some fields to be used for screening of candidates for reservoir performance monitoring jobs, and to make such data available for use in the future field development studies. In this work the methods used to determine the water salinity are: the use of log interpretation chart, interpretation of basic common open- hole logs and the use of log interpretation software. The water salinities obtained from these methods were compared with the produced water analysis salinity values from the laboratory. From the results obtained, there is a trend in salinity, and the trend in the hydrocarbon bearing reservoirs varies with the different reservoirs or fields of study and is greatly affected by the lithology of the formation (i.e. sand or shale) where resistivity reading was obtained from, and resistivity tool used for logging the various reservoirs.