Patents by Inventor Catalin D. Ivan

Catalin D. Ivan 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).

  • Patent number: 8271246
    Abstract: A system and method is provided for minimizing lost circulation associated with the operation of a subterranean reservoir. The system includes one or more sources, such as earth modeling and fracture analysis tools, for providing data representative of a fracture formation in the reservoir, and a computer processor in communication with the data sources for determining an appropriate blend of lost circulation material products for application to the fracture formation. The computer processor is programmed with computer readable code for selecting a plurality of candidate products for application to the fracture formation, and for mathematically determining an optimized blend of the selected products. By applying the optimized blend, material and labor costs associated with well operation can be significantly reduced.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: September 18, 2012
    Assignee: Chevron U.S.A. Inc.
    Inventors: Benjamin Ames Leonard, Catalin D. Ivan
  • Publication number: 20100250204
    Abstract: A system and method is provided for minimizing lost circulation associated with the operation of a subterranean reservoir. The system includes one or more sources, such as earth modeling and fracture analysis tools, for providing data representative of a fracture formation in the reservoir, and a computer processor in communication with the data sources for determining an appropriate blend of lost circulation material products for application to the fracture formation. The computer processor is programmed with computer readable code for selecting a plurality of candidate products for application to the fracture formation, and for mathematically determining an optimized blend of the selected products. By applying the optimized blend, material and labor costs associated with well operation can be significantly reduced.
    Type: Application
    Filed: March 30, 2009
    Publication date: September 30, 2010
    Inventors: Benjamin Ames Leonard, Catalin D. Ivan
  • Patent number: 7735378
    Abstract: Generally, the present invention is directed to the in situ measurement of fluid density and/or flow rate in tubular conduits, wherein such measurement comprises measuring dynamic fluid level and/or load (weight) in a region of the conduit and correlating these measurements of the fluid with a density and/or flow rate. Such measurements are typically directed toward drilling fluids transported within the tubular conduits—particularly the return flow, wherein the fluid comprises extraneous material (e.g., cuttings, etc.) which can alter the density and flow rate of the drilling fluid.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: June 15, 2010
    Assignees: FSI International Corp Limited, Mezurx Pty Ltd
    Inventors: Christian Singfield, Catalin D. Ivan, Mark Morgan
  • Publication number: 20090211331
    Abstract: Generally, the present invention is directed to the in situ measurement of fluid density and/or flow rate in tubular conduits, wherein such measurement comprises measuring dynamic fluid level and/or load (weight) in a region of the conduit and correlating these measurements of the fluid with a density and/or flow rate. Such measurements are typically directed toward drilling fluids transported within the tubular conduits—particularly the return flow, wherein the fluid comprises extraneous material (e.g., cuttings, etc.) which can alter the density and flow rate of the drilling fluid.
    Type: Application
    Filed: December 18, 2007
    Publication date: August 27, 2009
    Applicants: FSI International Corp. Limited, MezurX Pty Ltd
    Inventors: Christian Singfield, Catalin D. Ivan, Mark Morgan
  • Patent number: 7098172
    Abstract: A process to substantially reduce fluid loss in which an appropriate amount of a non-flowing gel of sufficient strength is emplaced to substantially eliminate or reduce loss of the drilling fluid. The gel composition of the process includes: (1) a non-cellulose containing copolymer having vinyl phosphonate co-monomer units which may be incorporated into the polymer by copolymerization with the other co-monomer(s) comprising the polymer or by grafting upon an already existing polymer or co-polymer, (2) a crosslinking agent active upon the phosphonate groups, (3) a crosslinking initiator comprising a Bronsted Lowry base or Lewis base and (4) an aqueous solvent.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: August 29, 2006
    Assignee: M-I L.L.C.
    Inventors: Robert L. Horton, Bethicia Prasek, Frederick B. Growcock, John W. Vian, Catalin D. Ivan