In order to generate a reasonably connected volume without merging adjacent (disconnected) conducting layers a series a 3D filters were applied to reprocess the data. Final filtering sequence selected is as follows:
The resulting bf shale volume is reasonable in terms of flow connectivity.
Extracted volume was restricted to the area of interest defined by the main three layers of the SFR reservoir. Small disconnected volumes were eliminated. An automatic optimization step was undertaken with the following characteristics:
The resulting mesh was of sufficient quality and size for use in reservoir/geomechanical simulations.
A detailed report on the mesh extraction process for the upper reservoir (SFR) can be downloaded here: Upper Reservoir PDF
Once a surface is extracted it can be used to generate masks on sugarcube grids. You can download a number of masks generated using different algorithms. Use the links below to download medium resolution masks generated on the original sugarcube resolution (50x50x2.5m) with each cell value sampled from a 4x4x1 subgrid. The resulting maskd are shades of grey with 16 different values scaled between 0 and 1. A value of 0 indicates that a cell is completely outside of the surface being sampled, and 1 that it is completely inside.