Petroleum Science >2019,??Issue 5:??1-9 DOI: https://doi.org/10.1007/s12182-019-00370-8
Deep resistivity “turnover” effect at oil generation “peak” in the Woodford Shale, Anadarko Basin, USA Open?Access
文章信息
作者：Ting Wang, Jacobi David
作者单位：
College of Resources and Environment, Yangtze University, Wuhan, China; School of Geology and Geophysics, University of Oklahoma, Norman, USA; ConocoPhillips Company, Houston, USA; State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing, China; Key Laboratory of Exploration Technology for Oil and Gas Research (Yangtze University), Ministry of Education, Wuhan, China
投稿时间：2018-09-01
引用方式：Wang, T. & David, J. Pet. Sci. (2019). https://doi.org/10.1007/s12182-019-00370-8
文章摘要
The Devonian Woodford Shale in the Anadarko Basin is a highly organic, hydrocarbon source rock. Accurate values of vitrinite reflectance (Ro) present in the Woodford Shale penetrated by 52 control wells were measured directly. These vitrinite reflectance values, when plotted against borehole resistivity for the middle member of the Woodford Shale in the wells, display a rarely reported finding that deep resistivity readings decrease as Ro increases when Ro is greater than 0.90%. This phenomenon may be attributed to that aromatic and resin compounds containing conjugated pi bonds generated within source rocks are more electrically conductive than aliphatic compounds. And aromatic and resin fractions were generated more than aliphatic fraction when source rock maturity further increases beyond oil peak. The finding of the relationship between deep resistivity and Ro may re-investigate the previously found linear relationship between source rock formation and aid to unconventional play exploration.
关键词
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Resistivity log, Source rock thermal maturity, Vitrinite reflectance, Woodford Shale