Continuous Fracture Modeling at Russneft

Russneft used Continuous Fracture Modeling (CFM™) technology to better understand the complex natural fractures found in the Maloichskoe field in the West Siberian basin*. The reservoir is a basement-fractured carbonate with low matrix flow properties so fractures drive production. Russneft challenged CFM to build a model that would accurately predict the orientation, location, and density of the fractures.

Russneft decided to use the model along with recommendations from the now SIGMA³ scientists to select the next well to be drilled in the field. That well, the first drilled in twenty years in Maloichskoe, encountered fractures as predicted by the CFM model. Comparison of the fracture orientation and density interpretation from the FMI with the model forecast showed very good correspondence. In fact, the intervals with high, medium and low fracture intensity are present approximately at the same depths in both. Most importantly, the production results proved good reservoir properties for the well as it has become one of the best producers in the field.

The results seen in Maloichskoe may be exceptional, but they aren't unusual for a CFM project. Similar results have been published for projects in the North Sea, the Middle East, North Africa, and onshore US.

*Published with permission from SPE, Paper 102562.

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