Patents by Inventor Geoffrey Colin Maitland

Geoffrey Colin Maitland 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).

  • Publication number: 20180171392
    Abstract: A fluid identification system comprising a plurality of particles, each particle encapsulating therein at least one tracer material having an identifiable DNA, the at least one tracer material being encapsulated by an encapsulation material, wherein the particles are adapted to retain the at least one tracer material in an encapsulated form after exposure of the particles to a temperature of at least 75° C. and/or a pressure of at least 1000 psi (6.9×106 N/m2).
    Type: Application
    Filed: February 14, 2018
    Publication date: June 21, 2018
    Inventors: Dominic Patrick Joseph McCann, Kevin John Forbes, Edyta Lam, Geoffrey Colin Maitland, Alexander Bismarck
  • Patent number: 9926591
    Abstract: A fluid identification system comprising a plurality of particles, each particle encapsulating therein at least one tracer material having an identifiable DNA, the at least one tracer material being encapsulated by an encapsulation material, wherein the particles are adapted to retain the at least one tracer material in an encapsulated form after exposure of the particles to a temperature of at least 75° C. and/or a pressure of at least 1000 psi (6.9×106 N/m2).
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: March 27, 2018
    Assignee: Tracesa, Ltd.
    Inventors: Dominic Patrick Joseph McCann, Kevin John Forbes, Edyta Lam, Geoffrey Colin Maitland, Alexander Bismarck
  • Publication number: 20160160269
    Abstract: A fluid identification system comprising a plurality of particles, each particle encapsulating therein at least one tracer material having an identifiable DNA, the at least one tracer material being encapsulated by an encapsulation material, wherein the particles are adapted to retain the at least one tracer material in an encapsulated form after exposure of the particles to a temperature of at least 75° C. and/or a pressure of at least 1000 psi (6.9×106 N/m2).
    Type: Application
    Filed: February 16, 2016
    Publication date: June 9, 2016
    Inventors: Dominic Patrick Joseph McCann, Kevin John Forbes, Edyta Lam, Geoffrey Colin Maitland, Alexander Bismarck
  • Patent number: 9322056
    Abstract: A fluid identification system comprising a plurality of particles, each particle encapsulating therein at least one tracer material having an identifiable DNA, the at least one tracer material being encapsulated by an encapsulation material, wherein the particles are adapted to retain the at least one tracer material in an encapsulated form after exposure of the particles to a temperature of at least 75° C. and/or a pressure of at least 1000 psi (6.9×106 N/m2).
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: April 26, 2016
    Assignee: Tracesa, Ltd.
    Inventors: Dominic Patrick Joseph McCann, Kevin John Forbes, Edyta Lam, Geoffrey Colin Maitland, Alexander Bismarck
  • Publication number: 20140220563
    Abstract: A fluid identification system comprising a plurality of particles, each particle encapsulating therein at least one tracer material having an identifiable DNA, the at least one tracer material being encapsulated by an encapsulation material, wherein the particles are adapted to retain the at least one tracer material in an encapsulated form after exposure of the particles to a temperature of at least 75° C. and/or a pressure of at least 1000 psi (6.9×106 N/m2).
    Type: Application
    Filed: April 4, 2012
    Publication date: August 7, 2014
    Applicant: TRACESA LTD.
    Inventors: Dominic Patrick Joseph McCann, Kevin John Forbes, Edyta Lam, Geoffrey Colin Maitland, Alexander Bismarck
  • Publication number: 20040213905
    Abstract: The invention relates to a treatment fluid for consolidating an unconsolidated or weakly consolidated granular porous substrate without simultaneous substantial loss of permeability and a method for doing the same. According to the invention, the treatment fluid comprises a solvent;—a surfactant, in a concentration sufficient to form admicelles at the surface of grains of the substrate; and—at least one compound comprising a functional group able to polymerise, together, where appropriate, with a polymerisation initiator. The invention can be implemented, in particular, for consolidating sandstone of a rock formation.
    Type: Application
    Filed: May 19, 2004
    Publication date: October 28, 2004
    Inventors: Christopher Breen, Francis Clegg, Geoffrey Colin Maitland
  • Patent number: 6279655
    Abstract: A settable thixotropic material comprises a thixotrope and a settable substance, the material being capable of gelling reversibly in a gelling time of less than 60 seconds. The thixotrope conveniently comprises a fine grained clay, especially smectite clays, e.g. hectorites. It is preferred to use synthetic smectite type clay colloids, and goods results have been obtained with the synthetic clay known as Laponite RDS. The settable material conveniently comprises cement, particularly Portland cement. The thixotropic material finds use generally in oilwell applications, e.g. to plug lost circulation zones, to repair damaged or corroded casing, as grouts, and to limit annular gas migration. The material also finds particular application in techniques for completion of horizontal wells completed with slotted or pre-drilled liners.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: August 28, 2001
    Assignee: Schlumberger Technology Corporation
    Inventors: Demosthenis Georgeou Pafitis, Stephen Nigel Davies, Geoffrey Colin Maitland