Patents by Inventor Jose Zapico

Jose Zapico 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).

  • 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
  • Thermally stable thiosulfate hydroxyethylcellulose suspension
    Patent number: 5407475
    Abstract: A storage and thermally stable polymer suspension in fresh water remains pourable after mixing at 6 months comprises at least 30% ammonium or sodium thiosulfate and 20% hydroxyethylcellulose. In an oil drilling fluid, yield value decreases less than 35% when heated for 16 hours at 250.degree. F.
    Type: Grant
    Filed: April 8, 1993
    Date of Patent: April 18, 1995
    Assignee: Aqualon Company
    Inventors: Carl A. Lukach, Jose Zapico
  • Invert emulsion polysaccharide slurry
    Patent number: 5001231
    Abstract: Carboxymethylhydroxyethyl (CMHEC), starch and guar are preferred polysaccharides providing at least a 1% solution viscosity of 1000 cps at 25 C. An invert emulsion for oil drilling or paper manufacture comprises on a weight percent basis:______________________________________ Diesel, mineral or paraffin oil 40-60 Imidazole surfactant 1-4 Water 0-10 Organophilic clay 0.5-5.
    Type: Grant
    Filed: November 20, 1989
    Date of Patent: March 19, 1991
    Assignee: Aqualon Company
    Inventor: Jose Zapico
  • Diaphragm wall construction gelatin composition
    Patent number: 4990608
    Abstract: Carboxymethylcellulose (CMC) and hydroxyethylcellulose (HEC) are preferred modified polysaccharides providing at least 10% by weight gelatin particles to prevent fluid loss during diaphragm wall construction. A 1% solution of CMC or HEC give a 1000 cps viscosity at 25.degree. C. An oil slurry comprises:______________________________________ Solvent 45 Surfactant 2.5 Water 6 Organophillic clay 1 Modified cellulose 45.
    Type: Grant
    Filed: June 7, 1989
    Date of Patent: February 5, 1991
    Assignee: Aqualon Company
    Inventor: Jose Zapico