An Evaluation Method for Gas Production Property for Shale Gas Reservoirs in the Fuling Area

Abstract

In order to accurately evaluate the gas production property of shale gas reservoirs, the key parameters affecting the gas production in shale gas reservoir were selected based on the analysis of the gas production test data of the Fuling Shale Gas Field, and further divided into both the shale gas production factor GPF and the reservoir evaluation index LEI. They formed the basis by which the GPF-LEI gas production property evaluation method for shale gas reservoir was established by taking the evaluation parameter scoring standard as the constraint condition. The site verification in the Fuling Shale Gas Field showed that the better the kind of gas production evaluation category, the higher the open flow capacity. The open flow capacity of shale gas reservoir predicted by this method basically matches with actual test results, and the relative error is 15. 5%. Research results indicated that the gas production category of shale gas reservoir evaluated by this method had a good correlation with open flow capacity, and provided a new method for evaluating the gas production property in shale gas reservoirs.

AAPG Datapages/Search and Discovery Article #130004© Petroleum Drilling Techniques, Issue 5, 2018