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UNRAVELING THE COMPLEXITY OF THE BONE SPRING AND WOLFCAMP USING HIGH-RESOLUTION XRF DATA FOR WELL PLACEMENT.
The Permian Basin stands out as a highly productive geological formation spanning across New Mexico and West Texas. Notably, the Bone Springs and Wolfcamp Formations within this basin have emerged as prolific sources of hydrocarbon extraction. These formations, originating during the Permian era in settings marked by restricted marine conditions with reef influences, namely, the Bone Springs and Wolfcamp formations, exhibit intricate rock compositions. Their deposition was controlled by the position within the basin and included architectural elements such as debris flows, turbidites, and slumps, encompassing both carbonate and siliciclastic environments.
Within the intricate fabric of these formations, one might initially perceive homogeneity, yet comprehensive investigations have unveiled their true complexity and heterogeneity. Employing XRF (X-ray fluorescence) analysis and elemental data derived from cuttings has surfaced as an invaluable and cost-effective technique. This methodology assumes a pivotal role in identifying chemostratigraphic units and characterizing rock attributes, subsequently proving indispensable during drilling operations.
This presentation seeks to showcase some applications of this analytical tool, specifically within the context of the Wolfcamp and Bone Spring sandstone formations. By harnessing elemental data, the ability to discern between intervals sharing akin well-log signatures is markedly enhanced. Furthermore, this approach plays a pivotal role in the process of geosteering of wells.
A confluence of data analytics and geostatistical methods has been instrumental in helping to interpret and automate procedures, thereby bolstering the confidence level in geosteering and interval correlations. The amalgamation of these techniques stands poised to revolutionize our comprehension and manipulation of the complex formations found within the Wolfcamp and Bone Spring sandstones.
Bio: Ligia Carolina Mayorga-Gonzalez graduated in May 2022 with her Ph.D. from Colorado School of Mines, working on a High-resolution Reservoir Characterization of the Lewis Shale using elemental, well log, and core data. She graduated with her undergraduate degree in geology from the Universidad Nacional de Colombia in Bogota. She then pursued a master’s degree at the University of Oklahoma. She worked for two years as a reservoir geologist at Morningstar Partners, focusing on the Lewis Shale formation in Wyoming. She has a background in reservoir characterization using XRD, XRF, and petrophysical analysis.
She is currently working with Diversified on the Wolfcamp, Bone Spring Sandstone, and Eagleford Formations, among others.
