Polymer-based preflush allows fracing near water intervals

Carlos Brocco Pioneer Resources Inc. Buenos Aires E. Dwyann Dalrymple Halliburton Energy Services Inc. Duncan, Okla. Prentice Creel Halliburton Energy Services Inc. Odessa, Tex. Horacio Peacock Halliburton Energy Services Inc. Buenos Aires A preflush technique was successfully used in fracturing oil zones near water-producing intervals in nine Pioneer Resources Inc. wells in Argentina. The treatment has also been successfully used in wells in the U.S. Data from the initial 3 months of production from the wells in Argentina indicate that the stimulations were economically justified. The treatments limited water production to less than 15% in some wells...

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