Patents by Inventor Wanchai Ratanasirigulchai

Wanchai Ratanasirigulchai 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).

  • Controlling transient pressure conditions in a wellbore
    Patent number: 7284612
    Abstract: A method and apparatus for use in a wellbore includes running a tool string to an interval of the wellbore, and activating a first component in the tool string to create a transient underbalance pressure condition in the wellbore interval. Additionally, a second component in the tool string is activated to create a transient overbalance pressure condition in the wellbore interval, or vice versa.
    Type: Grant
    Filed: July 21, 2004
    Date of Patent: October 23, 2007
    Assignee: Schlumberger Technology Corporation
    Inventors: Wanchai Ratanasirigulchai, Lawrence A. Behrmann, Andrew J. Martin, Kenneth R. Goodman
  • Controlling transient pressure conditions in a wellbore
    Publication number: 20070034369
    Abstract: A method and apparatus for use in a wellbore includes running a tool string to an interval of the wellbore, and activating a first component in the tool string to create a transient underbalance pressure condition in the wellbore interval. Additionally, a second component in the tool string is activated to create a transient overbalance pressure condition in the wellbore interval, or vice versa.
    Type: Application
    Filed: September 19, 2006
    Publication date: February 15, 2007
    Applicant: Schlumberger Technology Corporation
    Inventors: Wanchai Ratanasirigulchai, Lawrence Behrmann, Andrew Martin, Kenneth Goodman
  • Method and apparatus for orienting perforating devices and confirming their orientation
    Patent number: 7000699
    Abstract: The present invention provides an apparatus and method of orienting perforating gun strings. One embodiment of the present invention provides an orienting weight provided in a portion of the perforating device, such as the shaped charge, the loading tube or the gun housing. Additional weight may be provided as separate components and attached to the gun components.
    Type: Grant
    Filed: April 27, 2002
    Date of Patent: February 21, 2006
    Assignee: Schlumberger Technology Corporation
    Inventors: Wenbo Yang, Alfredo Fayard, Robert A. Parrott, Klaus B. Huber, Jeffrey P. Meisenhelder, A. Glen Edwards, Steven W. Henderson, Joseph B. Edone, Wanchai Ratanasirigulchai, Manuel Gonzalez
  • Flame and Heat Resistant Oilfield Tools
    Publication number: 20050247450
    Abstract: Oil and gas well tools, tool components, and explosive components having a heat resistant and/or flame retardant coating are provided. Furthermore containers and packing material having a heat resistant and/or flame retardant coating for use in transporting heat and/or flame-sensitive tools, tool components, explosives, and explosive components are provided.
    Type: Application
    Filed: May 10, 2004
    Publication date: November 10, 2005
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Wanchai Ratanasirigulchai, Daniel Markel
  • Controlling Transient Pressure Conditions In A Wellbore
    Publication number: 20040231840
    Abstract: A method and apparatus for use in a wellbore includes running a tool string to an interval of the wellbore, and activating a first component in the tool string to create a transient underbalance pressure condition in the wellbore interval. Additionally, a second component in the tool string is activated to create a transient overbalance pressure condition in the wellbore interval, or vice versa.
    Type: Application
    Filed: July 21, 2004
    Publication date: November 25, 2004
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Wanchai Ratanasirigulchai, Lawrence A. Behrmann, Andrew J. Martin, Kenneth R. Goodman
  • Method and apparatus for orienting perforating devices and confirming their orientation
    Publication number: 20020185275
    Abstract: The present invention provides an apparatus and method of orienting perforating gun strings. One embodiment of the present invention provides an orienting weight provided in a portion of the perforating device, such as the shaped charge, the loading tube or the gun housing. Additional weight may be provided as separate components and attached to the gun components.
    Type: Application
    Filed: April 27, 2002
    Publication date: December 12, 2002
    Inventors: Wenbo Yang, Alfredo Fayard, Robert A. Parrott, Klaus B. Huber, Jeffrey P. Meisenhelder, A. Glen Edwards, Steven W. Henderson, Joseph B. Edone, Wanchai Ratanasirigulchai, Manuel Gonzalez