| Detailed Agenda Business Impact Subsurface geologic maps are the most important and widely used documents in petroleum exploration and development. Geoscientists and engineers are expected to understand and be able to efficiently and accurately generate many types of subsurface maps. Nevertheless, many geoscientists have not had sufficient formal training in the fundamental principles and methods that underlie accurately constructed subsurface maps, whether the data source is a seismic interpretation, well log correlation or both. During the exploration process (and for that matter development process as well), understanding of the subsurface geometry, incorporating both structural and stratigraphic framework, is essential to understanding the 4D development of potential reservoirs. Subsurface maps represent the cornerstone of data presentation and information transfer in oil & gas exploration & development, whether well log based, seismic based, or both. The focus of the course is on the fundamental principles and methodologies of accurately conveying critical data and information via subsurface mapping Detailed Course Agenda  Module 1: Basic and Principles of Subsurface Mapping  General Log Measurement Terminology  Electric log correlation procedures and guide line.  Electrical log correlation in vertical wells o Log correlation plan o Basic concepts in electric log correlation o Faults Vs variation in stratigraphy  Electrical log correlation in – directional drilled wells o Log correlation plan correlation of vertical and directional drilled wells  MD, TVDss, TVD, TVT and TST terminologies.  Module 2: Well Correlation Uncertainties for Subsurface Mapping  Unconformity surfaces types.  Different kinds of faults in different tectonic regimes.  Hiatus and well correlation  Normal faults and Reverse faults determination from well logs.  Module 3: Well Correlation Techniques for Subsurface Mapping  Sequence stratigraphy principles and application in well correlation.  Chronostratigraphy vs lithostratigraphy.  Concepts of petroleum geology, structural regimes.  Module 4: Integration of geophysical data in subsurface mapping  Seismic stratigraphy.  Seismic correlation using reflectivity for unknown areas.  Seismic to well tie and wavelet correlation.  Structure contour maps and uncertainties  Module 5: Lithofacies analysis using Different Tools  Reservoir delineation from seismic inversion tools.  Lithology volumes from seismic inversion.  Lithology discrimination using neural network.  Module 6: Structure mapping in tectonic domains  Extensional tectonics and mapping techniques.  Compressional, strike-slip tectonics.  Module 7: Geological Cross Sections.  Structural and stratigraphic correlation and cross sections.  Hydrocarbon basins/plays and how to map in regional scale.  Geo-Seismic cross sections.  Module 8: Subsurface Mapping  Isopach and Isochore maps.  Risk Assessment and Prospect ranking using different subsurface maps.  Common Risk Segment Maps and Combined Common Risk Segment Maps (CRS & CCRS) and how to construct these maps.  Module 9: Well Logging and Oil Exploration and Role in Subsurface Mapping  Open hole wireline logging.  Basic tool types and their responses  Basic interpretation of lithology  Clay corrections Data analysis.  Module 10: Volumetric Calculations based on Correlation.  Chance of success maps (COS) and risked hydrocarbon in place.  2D Hydrocarbon In-Place calculations using structural contour maps.  2D Reserve Calculations and recovery factor for different hydrocarbon drive mechanisms. Note: The course will not only be presented by showing and interpreting the material in detail, but also the participants will work together using a real data to apply all the workflow and to project their previous knowledge and experience onto the course, they also encouraged to bring their own data so that real working examples can be reviewed and interpreted. |