CHARACTERIZING GEOLOGIC AREAS BASED ON COMPARATIVE COMPOSITIONAL ANALYSIS

摘要

The invention disclosed herein provides new methods for analyzing oil production properties of an oil well and in aspects identifying locations of relatively higher likelihood of petroleum productivity within a well. The invention comprises comparing characteristics of one or more samples of rock from the well (e.g., petroleum cuttings) with a fluid produced from the same well or a related well. Select compounds and select relationship(s) between compounds are typically used in the method to ensure data quality and its predictive properties; select methods (e.g., gentle volatiles extraction) are used to derive the compounds; or both. In one application, a method comprises comparing compounds or compound ratios in each sample or sample set to identify well portions contributing most to oil production of the well. Comparative analyses can occur within a single well or across two or more wells.