Patents by Inventor Phillip Lance Urlwin-Smith

Phillip Lance Urlwin-Smith 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).

  • Blocking composition for use in subterranean formation
    Patent number: 6192986
    Abstract: A polymer composition for pumping downhole to gel in a subterranean formation comprises a water-soluble copolymer of (i) at least one non-acidic ethylenically unsaturated polar monomer and (ii) at least one copolymerisable ethylenically unsaturated ester; and an organic gelling agent therefor.
    Type: Grant
    Filed: February 18, 1999
    Date of Patent: February 27, 2001
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Phillip Lance Urlwin-Smith
  • Oil and gas field chemicals
    Patent number: 5836392
    Abstract: A method for conformance control of a reservoir comprising injecting into a zone of the reservoir an aqueous solution of a co-polymer comprising at least one ethylenically unsaturated polar monomer and at least one copolymerizable ethylenically unsaturated ester formed from a hydroxy compound of the formula ROH wherein R is a selected alkyl group, alkenyl group, cycloalkyl group, aryl group or such groups substituted with from 1 to 3 hydroxyl, ether or thio ether groups or a heterocyclic or selected heterocyclic alkylene group and at least one hetereatom selected from oxygen, nitrogen and sulfur and a selected alkenoic or aralkenoic carboxylic acid or sulfonic or phosphoric acid together with a crosslinking agent comprising a multi-valent metal ion capable of crosslinking an acrylic acid polymer to form a viscous gel.
    Type: Grant
    Filed: August 5, 1997
    Date of Patent: November 17, 1998
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Phillip Lance Urlwin-Smith