AP Section 2 Problem

# AP Section 2 Problem - Donald G Hill Ph.D Consulting...

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Donald G. Hill, Ph.D. Consulting Petrophysicist The World is My District California Registered Geophysicist 170 California Registered Geologist 6043 Kentucky Registered Professional Geologist 1624 Texas Licensed Professional Geophysicist 6289 Petrophysics, Borehole Geophysics, and Subsurface Geology Planning, Oversight, and Interpretation 1012 Hillendale Ct. Office: (925) 347-5748 Walnut Creek, CA 94596 FAX: (309) 420-7354 e-mail: [email protected] Home: (925) 947-1541 Cell: (925) 437-5748 Well Log Cr Well Log Cr oss oss - - Section Section Correlation Proble Correlation Proble m m Revised: 16.07.16 Figure 1. N – S Well Log Section, at LLNL, Showing Shallow Hydrostratigraphic Units (after Blake et al., 1995).

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Well Section Correlation Problem Page 2 Geologists and geophysicists utilize well logs and seismic data to develop three dimensional models of subsurface petroleum reservoirs. These models are used, by drilling and production engineers, to plan development drilling and production programs. Explorationists spend a considerable portion of their time correlating subsurface formations on seismic sections and from well logs (“slipping Logs”) between near-by wells, to developing these models. The resulting correlated well log sections can be either: 1. “Hung on Structure”: i.e., the logs of all wells are shifted up or down such that the
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