Application of statistical quality control measures for near-surface geochemical petroleum exploration

摘要: There are four major quality control measures that can apply to geochemical petroleum exploration data: statistical charts, data reproducibility-Juran approach, ethane composition index, and hydrocarbon cross plots. Statistical control, or SQC, charts reflect the quality-performance of analytical process composed equipment, instrumentation, operator technique. An unstable is detected through assignable causes using SQC charts. Knowing variability paramount tying over time for in-fill samples and/or project extensions. The Juran approach a tool used help determine ability maintain itself within limits set specifications reproducing data. Ethane ECI, calculation based on near-surface, light measurements differentiate thermogenic, sources at depth. ECI integrated with subsurface geological information, seismic survey lower-risk drilling locations. Hydrocarbon plots visual correlation techniques compare two hydrocarbons similar suite (e.g., versus propane, benzene toluene, 2-ring aromatics 3-ring aromatics). Cross contamination, multiple sources, low-quality high-quality indigenous different tools. When geomorphology, geology, provides beneficial information developing model. High-quality key successful application geochemistry in modeling. produce high-quality, requires reflective well managed ISO 9000 system. studies, basic elements found such briefly discussed Appendix A.