Patents by Inventor Douglas Espin

Douglas Espin 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).

  • Method for treating drilling fluid using nanoparticles
    Publication number: 20020123431
    Abstract: A method for treating a drilling fluid is provided, which method includes the steps of providing a drilling fluid, providing a drilling fluid additive in the form of superparamagnetic nanoparticles, mixing the drilling fluid additive with the drilling fluid so as to provide a treated drilling fluid, and exposing the treated drilling fluid to a magnetic field so as to recover the superparamagnetic nanoparticles.
    Type: Application
    Filed: March 2, 2001
    Publication date: September 5, 2002
    Inventors: Maria Alejandra Jimenez, Luis Carlos Genolet, Juan Carlos Chavez, Douglas Espin
  • Method for consolidation of sand formations using nanoparticles
    Publication number: 20020117302
    Abstract: A method is disclosed for consolidating an unconsolidated formation, which method includes the steps of providing a well drilled to an unconsolidated formation, providing a consolidation fluid in the form of a fluid suspension of nanoparticles, and flowing said consolidation fluid through the well and into the unconsolidated formation so as to position the nanoparticles between grains of the unconsolidated formation whereby the formation is consolidated over time.
    Type: Application
    Filed: February 28, 2001
    Publication date: August 29, 2002
    Inventors: Douglas Espin, Juan Carlos Chavez, Aaron Ranson
  • Apparatus and method for performing downhole measurements
    Patent number: 6360823
    Abstract: An apparatus for performing a function in a flowing fluid includes an apparatus body and a drag member associated with the apparatus body. The drag member is configurable between drag configuration for moving with the fluid wherein the apparatus has a first drag and a reduced drag configuration for moving against the fluid wherein the apparatus has a second drag which is less than the first drag.
    Type: Grant
    Filed: July 20, 2000
    Date of Patent: March 26, 2002
    Assignee: Intevep, S.A.
    Inventors: Aaron Ranson, Jose Zapico, Douglas A. Espin, Mariela G. Araujo