Patents by Inventor Michael John Chaplain

Michael John Chaplain 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).

  • Drillpipe assembly and a method of deploying a logging tool
    Patent number: 6755257
    Abstract: An apparatus and method for deploying a so-called compact battery/memory logging tool, for acquiring data in deviated or horizontal wells in the oil and gas well data logging industry. A drillpipe assembly (10) includes a drillpipe (11) having secured at a downhole end thereof a delatching latching sub (12) containing an extendable running sub (13) supporting a battery/memory logging tool (14). The running sub (13) occupies an initial, retracted position during deployment of the drillpipe (11), whereby the logging tool (14) is protected within one or more drillpipe stands. The running sub is movable by a messenger (26) to a second, extended position in which its logging tool (14) protruding from the drillpipe (11). The drillpipe assembly may therefore be used to protect the logging tool (14) during running in operations; and then to extend the logging tool permit commencement of logging operations.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: June 29, 2004
    Assignee: Reeves Wireline Technologies Limited
    Inventors: Michael Charles Spencer, Simon Christopher Ash, Michael John Chaplain