Short Course: Fluvial Stratigraphy, April 10, 2016
John Holbrook - Professor of Geology at Texas Christian University
Covers wide range of topics needed to identify, correlate, and interpret fluvial reservoirs and encasing non-reservoir units. This discussion will provide participants with the foundations for understanding and predicting the geometry, connectivity, and permeability trends of fluvial reservoirs systems at the scale of boreholes, fields, and basins.
Who Should Attend
Geologists, geophysicists, and engineers seeking techniques for improved subsurface mapping and more accurate prediction of lithology/porosity distribution within fluvial reservoir intervals that are depicted in seismic, borehole, and outcrop data sets. Concepts are taught from base principles so no prerequisites are required. An entry-level understanding of Geology is helpful.
Upon completion of the course, participants will gain an overview of the river processes that generate strata as well as acquire a range of techniques for mapping and interpretation of fluvial rock. Participants will attain the following skills.
- Relate surficial fluvial processes to specific rock units.
- Evaluate fluvial preservation in a “river-to-rock” context.
- Quickly recognize fluvial lithofacies in core and outcrop.
- Identify and constrain dimensions of reservoir (e.g., bars, channel belts, etc) and non-reservoir (e.g. lake, floodbasin, etc.) architectural elements in well-logs, core, seismic, and outcrop.
- Place reservoir elements into their correct position within the fluvial architectural hierarchy (e.g. channel-fill vs. channel belt vs. valley fill).
- Improve reservoir evaluations through a gained understanding of the relationships between locally preserved net to gross and broader basin processes.
- Estimate heterogeneity and connectivity between and within reservoirs.
- Correlate fluvial strata at the basin scale.
The course is subdivided into six components that each convey a specific aspect of fluvial stratigraphy and each build sequentially upon knowledge gained from the preceding components. These components are, in order, fluvial geomorphology, fluvial facies, fluvial architecture, seismic geomorphology, heterogeneity and connectivity, and correlation.