PLASTIC VALVES USE

Brand Owner Address Description
POLY-BALL Nordstrom Valves, Inc. 1511 Jefferson Street Sulphur Springs TX 75482 PLASTIC VALVES FOR USE IN THE OIL AND GAS INDUSTRIES, SUCH VALVES NOT BEING MACHINE PARTS;
 

Where the owner name is not linked, that owner no longer owns the brand

    
Technical Examples
  1. A method of isolating a reservoir of production fluid in a formation comprises providing a pair of valves (14, 16) in a bore intersecting a production formation and in which the hydrostatic pressuer in the bore at the formation is normally lower than the formation pressure, and then ontrolling the valves (14, 16) from surface such that the valves (14, 16) will only move from a closed configuration to an open configuration on experiencing a predetermined differential pressure across the valves.