Patents Represented by Attorney Roberet E. Sloat

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  • Use of low- and high-molecular-weight polymers in well treatments
    Patent number: 6156819
    Abstract: An aqueous polymer composition containing water and hydrophilic polymers and a method for treating subterranean formations with the composition to reduce formation permeability. The hydrophilic polymers are a mixture of high-molecular-weight polymers having a molecular weight of at least about 2,000,000, and low-molecular-weight polymers having a molecular weight of up to about 1,000,000.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: December 5, 2000
    Assignee: Atlantic Richfield Company
    Inventors: Quintin J. Lai, Daniel P. Newhouse