Patents Assigned to Wavefront Energy & Environmental Services Inc.
  • Patent number: 8061421
    Abstract: During a surge-pulsing operation in a borehole (e.g an oil-well undergoing remediation) liquid is stored under pressure upstream of a valve, and then released through the valve suddenly enough to create a seismic wave, which propagates into the formation around the borehole, and assists the surge-pulsing to improve the conductivity and liquid-injectability of the formation. The downhole valve achieves the rapid-opening requirement by virtue of its geometrical layout, as dictated by the strictures of the downhole environment.
    Type: Grant
    Filed: September 18, 2006
    Date of Patent: November 22, 2011
    Assignee: Wavefront Energy & Environmental Services Inc.
    Inventors: Mahendra Samaroo, Ronald E. Pringle, Thomas James Timothy Spanos, Brett Charles Davidson
  • Patent number: 7806184
    Abstract: A well tool is operable to receive a flow of fluid. The well tool includes a first hydraulic area on which the fluid acts tending to move a first body to substantially seal against passage of fluid through an aperture. A second, larger hydraulic area is provided on which the fluid acts tending to move a second body. The second body is movable by the fluid acting on the second hydraulic to displace the first body from substantially sealing against passage of fluid through the aperture. An energy storing device is provided that is configured to store energy from movement of the second body until at least a specified amount of energy is stored and release the energy when the second body is moved to displace the first body from substantially sealing against passage of fluid through the aperture.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: October 5, 2010
    Assignee: Wavefront Energy and Environmental Services Inc.
    Inventors: Roger L. Schultz, Ken Michael, Pete Dagenais, Robert L. Pipkin