Wettability Alteration of Porous Media to Gas-Wetting for Improving Productivity and Injectivity in Gas-Liquid Flows. Second Annual Report for September 21, 2001-September 20, 2002

摘要

The authors have performed a number of imbibition tests with the treated and untreated cores in nC(sub 10), nC(sub 14), and nC(sub 16) and a natural gas condensate liquid. Imbibition tests for nC(sub 14) and nC(sub 16) were also carried out at elevated temperatures of 100 C and 140 C. An experimental polymer synthesized for the purpose of this project was used in core treatment. Imbibition results are very promising and imply liquid condensate mobility enhancement in the treated core. They also performed flow tests to quantify the increase in well deliverability and to simulate flow under realistic field conditions. In the past we have performed extensive testing of wettability alteration in intermediate gas wetting for polymer FC759 at temperatures of 24 C and 90 C. The results were promising for the purpose of gas well deliverability improvement in gas condensate wells. We used FC759 to lower the surface energy of various rocks.