Patents by Inventor Eugene P. Lunghofer

Eugene P. Lunghofer 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).

  • Composite silica proppant material
    Patent number: 6753299
    Abstract: An improved lightweight and highly permeable proppant composition for use in increasing the productivity of a gas or oil well. The proppant composition includes equal amounts by weight of uncalcined bauxite, uncalcined shale and quartz, held together with a binder formed of wollastonite and talc in an amount of less than 10% by weight of the composition. The proppant composition has an alumina content of less than 25% by weight of the composition and a silica content of over 45% by weight of the composition.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: June 22, 2004
    Assignee: Badger Mining Corporation
    Inventors: Eugene P. Lunghofer, Larry A. Wolfe
  • Composite silica proppant material
    Publication number: 20030148893
    Abstract: An improved lightweight and highly permeable proppant composition for use in increasing the productivity of a gas or oil well. The proppant composition includes equal amounts by weight of uncalcined bauxite, uncalcined shale and quartz, held together with a binder formed of wollastonite and talc in an amount of less than 10% by weight of the composition. The proppant composition has an alumina content of less than 25% by weight of the composition and a silica content of over 45% by weight of the composition.
    Type: Application
    Filed: November 9, 2001
    Publication date: August 7, 2003
    Inventors: Eugene P. Lunghofer, Larry A. Wolfe
  • Hydraulic fracturing propping agent
    Patent number: 5120455
    Abstract: A high strength propping agent for use in hydraulic fracturing of subterranean formations comprising solid, spherical particles having an alumina content of between 40 and 60%, a density of less than 3.0 gm/cc and an ambient temperature permeability of 100,000 or more millidarcies at 10,000 psi.
    Type: Grant
    Filed: December 5, 1990
    Date of Patent: June 9, 1992
    Assignees: Carbo Ceramics Inc., A/S Niro Atomizer
    Inventor: Eugene P. Lunghofer
  • Hydraulic fracturing propping agent
    Patent number: 4522731
    Abstract: A high strength propping agent for use in hydraulic fracturing of subterranean formations comprising solid, spherical particles having an alumina content of between 40 and 60%, a density of less than 3.0 gm/cc and an ambient temperature permeability of 100,000 or more millidarcies at 10,000 psi.
    Type: Grant
    Filed: October 28, 1982
    Date of Patent: June 11, 1985
    Assignee: Dresser Industries, Inc.
    Inventor: Eugene P. Lunghofer
  • Process for the production of sintered bauxite spheres
    Patent number: 4440866
    Abstract: A process for producing high strength sintered bauxite spheres usable as fracture propping agents in oil or gas wells are produced by continuous spray-granulation of an aqueous binder-containing aluminous ore suspension to form granules which are subsequently sintered. Suitable starting materials include ores of high aluminum silicate content.
    Type: Grant
    Filed: October 28, 1982
    Date of Patent: April 3, 1984
    Assignee: A/S Niro Atomizer
    Inventors: Eugene P. Lunghofer, Sten Mortensen, Aubrey P. Ward