Standard Gamma Ray Log Insights

Uranium (Nuclear Minerals) / Exploration, Mining, Marketing, & Acquisitions

Date posted: 10/22/17

Franz O. Meyer reports in a multi-chapter on-line presentation relating to oil and gas in carbonate reservoirs suggests that uranium generally tied to organic matter visualizes the ecologic shifts caused by anaerobic microbial metabolic processes. Anaerobic microbes supplement their unmet metabolic needs by mining uranium. Poor at processing organic matter, anaerobic microbes get additional energy by stripping electrons off uranium. The loss of two electrons changes the valence state of uranium from 6 to 4 or from highly mobile to immobile. Reduced uranium is fixed by organic matter adsorption. Uranium mining companies lament the difficulty of extracting uranium from peat bog deposits. The process is exceedingly challenging and uneconomical. Standard gamma ray logs visualize the organic uranium link. Oceanographic studies confirm the amount of organic matter that accumulates in marine sediments is directly linked to marine productivity. Marine ecology links nutrient availability to plankton blooms and the volume of organic matter in sediments a variation with links to nutrient supply. Geologic processes impact nutrient availability and thus standard gamma ray log expression. Subtle details manifest the linked geochemical, microbiologic, oceanographic, marine ecologic and geologic processes in a systematic way that can be extracted to generate a extremely responsive and accurate sequence stratigraphic framework. The key is in standard gamma ray log details. It’s easy but time-consuming to extract the information by hand. Digitization of the linked concepts will revolutionize reservoir characterization and refine sequence stratigraphic methods applied in core analysis. An application built to extract the analytical method will expedite sequence stratigraphic analysis and eliminate variable interpretations of surface significance. Multiple additional advantages quickly come to attention once the methodology is understood and confirmed by your own one core descriptions. A major benefit is your calibrated core is now tied to logs widely used to correlate reservoirs. I’ve learned my lesson and would never again describe core without consulting a standard gamma ray log.