Effective Well Stimulations with Gelled Methanol/Carbon Dioxide Fracturing Fluids

Abstract

This paper waa selected for presentation by an SPE Program Committee following review of informationcontained in an abstractsubm;ltedby the author(e). Contente of thepaper, as presented, have not been reviewed bythe Society of Petroleum Engineere andaresubject tocorrection by the author(s).The material, as presented, does not necessarily reflect any positicnof the Society of Petroleum Engineers, its officers,or members. Papere preaentd at SPEmeatinge aresubject topublication review by Editorial Ccmminees of the Swietyof Petroleum Engineers. Permission tocopy ia restricted toan abstract of notmore than 300 words. illustrationsmaynotbe copied. Theabstract should contain conspicuousacknowl&gmentof where and by whom the paper is presented. Write PublicationsManager, SPE, P.O. Sox 833836, Richardson, TX 75063.3836. Telex, 730969 SPEDAL. ABSTRACTi.ly to achievedesign~fracturelengthswhile substantially reducingthe waterburdenplacedin the C02 foam fracturing fluidswith gelledmethanol @ential hydrocarbon producing zone. Thesefluids as the externalphasehave beer, develo@. These had an addedadvantage of lcweredloadwater inter-C02 foamsare generated on the surfaceby a patented facialtensionfran the mid 70s dyne/an.to the C02 heatingprccess. Fieldapplications of these fluidsdemonstrate that theyare effective well stim-

Carbonated Hydrocarbons For Improved Gas Well Fracturing Results

“…Energized systems were defined as October 1996, Volume 35, NO.8 those containing less than 52%, by volume, CO 2 (5). Later, CO 2 foam(4-6, [8][9][10]14) and 100% liquid CO 2 0,7,11,13) fracturing were introduced. In all applications, the objective was to reduce the amount of fluid left in the formation after fracturing.…”