2-D Correlation and Stratigraphic Analysis
Two-dimensional stratigraphic analysis represents the bridge that joins the more familiar ground of 1-D data with the Star Wars genre 3-D reservoir model construction. Although products are coming onto the market as this book is being written that will allow geoscientists to interpret in 3-D space, the truth is that, for several years to come, the comfortable ruler of interpretation and comparison for most geologists will be a rather traditional combination of 2-D cross sections and maps. It is merely a matter of time before managers are sold well prospects using holograms, and fluvial geomorphologists examine the 3-D architecture of ancient river systems using 3-D images of complete channel belts. However, today it is difficult to shake the experience of decades of making structure and isopach maps when it comes down to bottom-line decision making. Symbolic of this phenomenon is STRATAMODEL™’s STRATAMAP™, a module that turns 3-D grid layers into 2-D maps in order that those accustomed to this format of presentation can relate more quickly. We recognize that currently our 3-D space-filling/model building is driven by a 2-D paradigm, and in this chapter we discuss a set of tools to carry out the interpretive process of framework building in 2D.
The construction of a solid 3-D model starts with the conversion of 1-D data into 2-D panels of interpreted lithologies and petrophysical properties and mapped surfaces. This 2-D interpretation stage is a fundamental conceptual step that forms the skeleton that is subsequently “filled” in 3-D space using a variety
Figures & Tables
Sequence Stratigraphy and Characterization of Carbonate Reservoirs - Reservoir management is an important topic in the oil industry today. Conferences, forums, short courses, and technical papers, written and attended by engineers, geologists, geophysicists, petrophysicists, and managers discuss various aspects of reservoir management. A critical component of reservoir management is the accurate characterization of the hydrocarbon asset, called reservoir characterization. The topic of this course is the process of sequence-stratigraphic interpretation and characterization of carbonate reservoirs. Because of the overwhelming mass of information most reservoir geoscientists keep up with either some aspects of sequence-stratigraphy, or some aspects of reservoir characterization, but typically not both. The authors believe that the two disciplines are so intimately related that the sequence framework should be considered a critical piece of the integrated puzzle.