Patents Assigned to Well Master Corp.
  • Patent number: 8869902
    Abstract: A plunger system for maximizing the liquid lift potential of a plunger arranged for vertical travel in a conduit in a gas/oil production well. The plunger system comprises an elongated plunger body mandrel having an upper or first end and a second or lower end with a fluid transmitting bore extending longitudinally therethrough, from the second or lower end of the plunger body and into at least a central portion of the plunger body, a plurality of curvilinearly shaped, replaceable wear pads arranged in a controllably radially displaceable manner on the plunger body, and at least one fluid ejecting nozzle arranged extending through a side wall of the plunger body.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: October 28, 2014
    Assignee: Well Master Corp.
    Inventors: Jesse L. Smith, David A. Green, Robert E. Bender
  • Patent number: 8201629
    Abstract: A staging tool arrangement for gas well production assistance, comprising an elongated staging tool having an elongated upper portion and an elongated lower portion. The upper portion has a sliding relationship with the lower portion thereof. A displaceable annular seal is arranged about the lower portion. A displaceable enclosure is arranged on the elongated lower portion so as to slidably expose and to slidably enclose the annular seal.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: June 19, 2012
    Assignee: Well Master Corp.
    Inventor: David A. Green
  • Patent number: 8162053
    Abstract: A elongated plunger assembly for pressurized, conduit-enclosed travel utilized in recovery of hydrocarbon deposits in a ground penetrating oil or gas well. The plunger comprises an elongated mandrel, a plurality of radially movable curvilinear wear pads circumferentially disposed adjacent each end of the elongated mandrel, a pad-edge retaining housing extending on at least one end of the elongated mandrel to enclosably retain the longitudinally distal end of a circumferential array of wear pads onto the mandrel, and a centrally disposed wear pad securement ring arrangement to permit release of a worn wear pad, replacement of the worn wear pad at an inner longitudinal edge thereof, thus to permit simple field-accessable removal and replacement of any particular “conduit-worn” “wear” pad from the mandrel of the plunger.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: April 24, 2012
    Assignee: Well Master Corp.
    Inventors: David A. Green, Robert E. Bender
  • Patent number: 7395865
    Abstract: A plunger in a plunger lift system in an oil and gas well includes shaped grooves spaced along the plunger body, angled fins or below the grooves, an elongated interior cavity open at the bottom, and passages connecting the interior cavity to the grooves. The shape, sizing and spacing of the grooves improves plunger seal and decreases liquid loss during plunger lift. The flutes or fins spin the plunger to clean the tubing string and prevent the plunger from becoming stuck in the lubricator. The interior cavity lightens the plunger and, in combination with the passages, improves the seal created by the shaped grooves.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: July 8, 2008
    Assignee: Well Master Corp.
    Inventor: Robert E. Bender
  • Publication number: 20070181311
    Abstract: An oil and gas well production unit for the retrieval of oil and gas from a diminishing oil and gas production field. The unit comprises a well casing within the field attached to a lubricator assembly. A plunger is arranged for reciprocable travel within a tubing in the casing and the lubricator to assist in the production of oil and gas removal from the oil and gas well production unit. A plunger examination port is arranged within the lubricator assembly to permit determination of the amount of wear of the plunger without having to remove the plunger from the lubricator assembly.
    Type: Application
    Filed: March 7, 2007
    Publication date: August 9, 2007
    Applicant: Well Master Corp.
    Inventor: Robert Bender