2011년도 제6차 해외전문교육 개요
ㅇ 교 육 명 :「Geophysical Well Log Interpretation」
ㅇ 교육기관 : Fugro Robertson Ltd.(FRL)
ㅇ 교육일시 : 2011.7.4(월) ~ 7.8(금), 5일간(9:00-17:00)
ㅇ 교육장소 : 해외자원개발진흥재단 석유가스교육연구센터(역삼동)
ㅇ 강 사 : Dr. Greg Samways
- 2004∼현재 Independent consultant : Fugro Robertson Ltd.
- 1998∼2004 Technical Director, Badley, Ashton & Associates Ltd.
- 1995∼1998 영국 Univ. of East Anglia 환경공학과 연구원으로 근무
- 1985∼1989 Ph.D. University of Liverpool, Sedimentologist
ㅇ 주요 교육내용
Part 1 - Establishing the Theoretical Foundation, augmented by short exercises and illustrated with examples.
o A review of the geological and petrophysical properties of rocks and their interaction with fluids(Geological controls on pore systems, porosity, permeability, and saturation. Explanation of rock-fluid interactions, namely wettability, saturation, capillary pressure and cation exchange capacity)
o An overview of conventional and special core analysis techniques, their theory, practice and uncertainties(including measurement of porosity, permeability, saturations, capillary pressures, cation exchange, wettability, a, m and n).
o An evaluation of the drilling and logging processes and their impact on borehole environment and quality, and the reliability of the wireline logs.
o Conventional openhole log theory, including Tension, Caliper, Gamma-Ray, Neutron Porosity, Density / PEF, Sonic, Spontaneous Potential, Resistivity, and Induction. A review of advanced logging theory and application, including NMR, Borehole Imaging (resistivity-, induction- and sonic-based), DSI, and Dielectric Scanners.
Part 2 - Full Integrated Petrophysical Log Analysis, with extensive Excel -based exercise. This part of the course will entail working through a full log suite and associated core analysis data using Excel, which will provide many opportunities to experiment with log and petrophysical parameters and sensitivities throughout the interpretation process.
o Data preparation and quality control
o Shale volume determination using a variety of logs(gamma-ray, neutron-density, SP), Thomas-Stieber methods for thin bed analysis
o Porosity analysis(neutron, density, sonic, all combinations, and NMR)
o Log-based saturation analysis, Pickett plots, Hingle plots, saturation / resistivity index plots, residual oil determination, Archie and non-Archie methods, including total and effective porosity models(e.g. Waxman-Smits, Dual-water, Indonesian, Simandoux). Saturation height analysis, J-functions. Low resistivity - high net pay intervals.
o Permeability estimation from qualitative indicators, log porosity and core analysis transforms, NMR evaluation, DSI, and engineering and production data.
o Fracture and Vug analysis, core-based studies, computed tomography, secondary porosity index(SPI), borehole image analysis, stoneley waves and shear sonic
o Reservoir summation, definition of V-shale, porosity and saturation cut-offs(gross thickness, net-sand, net-reservoir and net-pay determination), drive mechanisms and recovery factors.
