Patents by Inventor Bethicia M. Prasek

Bethicia M. Prasek has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Fracturing fluid having a delayed enzyme breaker
    Patent number: 5226479
    Abstract: The invention is directed toward a breaker system for breaking fluids used to fracture subterranean formations. Specifically, the invention relates to a breaker system comprised of an enzyme component and a pH component. The enzyme component is active at only certain pH levels and, at those levels, is able to break the fluid. The fluid is not initially at a pH level at which the enzyme is active. The pH component controllably adjusts the pH of the fluid to a level such that the enzyme becomes active and can break the fluid at the desired time after the formation has been fractured.
    Type: Grant
    Filed: January 9, 1992
    Date of Patent: July 13, 1993
    Assignee: The Western Company of North America
    Inventors: D. V. Satyanarayana Gupta, Marek K. Pakulski, Bethicia M. Prasek