GOHFER 9.7 (One PC)

GOHFER, which stands for Grid Oriented Hydraulic Fracture Extension Replicator, is a planar 3-D geometry fracture simulator with a fully coupled fluid/solid transport simulator. GOHFER was developed by Dr. Bob Barree of Barree & Associates in association with Stim-Lab, a division of Core Laboratories.

Key Features

• The grid structure allows for vertical and lateral variations, multiple perforated intervals as well as single and bi-wing asymmetric fractures to model the most complex reservoirs.
• GOHFER allows modeling of multiple fracture initiation sites simultaneously and shows diversion between perforations.
• The grid is used for both elastic rock displacement calculations as well as a planar finite difference grid for the fluid flow solutions.
• The width solution is fully 3-D allowing shear decoupling and local displacements are controlled by local pressures and rock properties.
• Screen outs consider localized leak off and proppant holdup and are not assumed to be caused by pad depletion or insufficient width.
• Most models assume linear-elastic deformation of a fully coupled rock mass.
• In shales the assumption of shear is critical.
• Along with this GOHFER accounts for pressure dependent leak off, transverse storage in horizontal and off-angle fracture components, and pressure dependent modulus of the bulk rock mass.

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