Analysis and Prediction of Well Performance for Hydraulically Fractured WellsUsing Reservoir Modeling Techniques. Topical Report, December 1990

摘要

The objective of the research project was to investigate factors that affectedfracture fluid injection, fracture fluid imbibition and fracture fluid cleanup in wells that are completed in low permeability gas reservoirs. It was also important to determine which of these factors most affected the analysis of post-fracture pressure transient data and the ultimate gas recovery before these items could be studied in detail, however, it was also necessary to learn how to model correctly these effects by taking into account factors such as formation damage, fracture conductivity damage, non-darcy flow, relative permeability hysteresis and capillary pressure effects. The results of the research showed that fracture conductivity must be high enough to allow proper fracture fluid cleanup prior to running a pressure transient test. If the fracture has not cleaned up sufficiently, then incorrect results will be obtained from conventional pressure transient test methods.