Chalk Project. Oil- and Gas Containing Calk Reservoirs in the Danish Part of the Central Graben. Pt. 5 p. W-1 KALKPLOT. Cross-Plots of LOG- and Core Data from the Chalk Group

摘要

The aim of this report is to present the variation of reservoir parameters in the Chalk Group, such as porosity, permeability, clay-content, m-(cementation factor) and Rw- values (resistivity of formation water). No cores are available in the Chalk Group from the W-1 well, and therefore the data has been established on wireline logs only. FDC-CNL cross-plots on raw log data have been produced to etablish corrections on these logs. CNL porosity versus resistivity from deep laterologs have been crossplotted to determine cementation factor and formation water resistivity for calculation of water saturation (CPI-run). Various other parameters are used for the CPI-run. From the CPI, x-plotted porosity values are found from the FDC-CNL logs, clay volume from the GR-log and calculated water saturation from porosity and resitivity logs. (ERA citation 09:042784)