Schlumberger Technology Corporation

Philippe Marza

Kang Wang

Shiduo Yang

Mi Zhou

Bin Bin Du

Arnaud Etchecopar

Randolph Koepsell

Rebecca Steinmann

Systems and methods for modeling subsurface rock formations based on well log data are provided. Systems include a downhole tool for acquiring data from which borehole dips may be picked and a processor including machine-readable instructions for curvature analysis based on inputs generated from the picked borehole dips data and which may be independent of 2D cross section model orientation. Methods (which may be incorporated in the machine-readable instructions corresponding to the systems) include pre-processing borehole dips data to generate inputs such as true stratigraphic thickness index, Local Constant Dips, borehole structural dip, and attributes for structural dip projections which may be used in a curvature analysis process for generating curvature logs such as standard, curvature along axis and curvature normal to axis logs from for smoothed dips, short zone structural dips and/or long zone structural dips.

Systems and methods for curvature analysis from borehole dips and applications thereof

A method for structure modeling of a formation penetrated by multiple wells includes obtaining borehole dips from borehole measurements; filtering the borehole dips based on a dip sequence analysis; computing structural dips based on the filtered dips; computing structural delineation by using the structural dips; projecting the structural dips to horizon point sets based on the structural delineation; and generating stratigraphic surfaces by mapping the projected horizon point sets. A system for structure modeling of a formation penetrated by multiple wells includes a processor and a memory that store a program having instructions for: obtaining borehole dips from borehole measurements; filtering the borehole dips based on a dip sequence analysis; computing structural dips based on the filtered dips; computing structural delineation by using the structural dips; projecting the structural dips to horizon point sets based on the structural delineation; and generating stratigraphic surfaces by mapping the projected horizon point sets.

Method and apparatus for near well structural modeling based on borehole dips

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Aberdeen, United Kingdom

Philippe Marza