Patents Represented by Attorney R. F. Freeland, Jr.

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  • Method of obtaining impression information from a well
    Patent number: 3960212
    Abstract: A self-contained wire line inflatable packer useful to carry an impression sleeve into a well for making impressions of the well surface, the inflatable sleeve of the wire line packer being automatically sequentially inflated and deflated by a valve controlled by a sequencing timer actuating means.
    Type: Grant
    Filed: May 8, 1975
    Date of Patent: June 1, 1976
    Assignee: Chevron Research Company
    Inventor: Stanley O. Hutchison