Publications

Typically, a complete set of standard log data (GRRes-ND) is required to conduct petrophysical analysis for a new well, allowing completion intervals to be quickly identified. This case study details workflows for petrophysical analysis when a full log suite is not available. Due to borehole limitations, only GR-Res LWD and cased-hole Neutron-Density were available for analysis at the Tembang–8ST4 development well. Hence, a pseudo Neutron – Density (N-D) log was generated enabling quick petrophysical analysis to determine completion intervals for the Tembang - 8ST4 well. The method for generating pseudo N-D logs is described using a Multiple Linear Regression (MLR). The resulting pseudo logs were validated by comparison with cased-hole wireline N-D logs.