1
Jimmie R Williamson Jr: Full bore lock system. Halliburton Company, Tracy W Druce, Ronald O Cox, September 20, 1994: US05348087 (104 worldwide citation)

A locking system which includes landing nipples connectable in a well flow conduit and a lock mandrel to which well flow control devices are connectable. The landing nipples have an unrestricted full bore flow passage with profiled locking and locating recesses having no square shoulders in the flow ...


2
Jack W Tamplen, Colby M Ross, Timothy J Noack, Jimmie R Williamson Jr: Locking mandrel for a well flow conductor. Otis Engineering Corporation, H Mathews Garland, August 2, 1983: US04396061 (103 worldwide citation)

In a locking mandrel for releasably locking a well tool in a well flow conductor of the type disclosed in U.S. Pat. No. 3,208,531 which includes a tubular body mandrel adapted for securing with a running tool and with a well tool, a locking dog retainer sleeve on the body mandrel, expandible and con ...


3
Jimmie R Williamson Jr: Full bore lock system. Halliburton Company, Tracy W Druce, Craig M Lundell, February 21, 1995: US05390735 (97 worldwide citation)

A locking system which includes landing nipples connectable in a well flow conduit and a lock mandrel to which well flow control devices are connectable. The landing nipples have an unrestricted full bore flow passage with a locking groove and profiled locating recesses with one square shoulder in t ...


4
Jimmie R Williamson Jr, Virgilio Garcia Soule, Perry C Shy, Leo G Collins: Hydraulic control system for downhole tools. Halliburton Energy Services, J Richard Konneker, Marlin R Smith, December 30, 2003: US06668936 (66 worldwide citation)

A hydraulic control system and associated methods provides selective control of operation of multiple well tool assemblies. In a described embodiment, a hydraulic control system includes a control module which has a member that is displaceable to multiple predetermined positions to thereby select fr ...


5
Jimmie R Williamson Jr: Safety valve landing nipple and method. Otis Engineering Corporation, Jennifer R Daunis, July 13, 1993: US05226483 (61 worldwide citation)

A safety valve landing nipple selectively provides communication between a surface control line and the internal bore of said landing nipple by use of a rotary member. A rotary shifting tool is used to rotate the rotary member so that a cutting means shears the end of a shearable plug in the wall of ...


6
Jimmie R Williamson Jr: Well tool. Otis Engineering Corporation, Albert W Carroll, February 7, 1984: US04429747 (57 worldwide citation)

A ported sliding sleeve valve for use in a well tubing to provide a lateral flow path for transfer of fluids between the tubing and the annulus exterior thereof, the lateral ports of the device being initially closed by a port closure sleeve which is movable to port-opening position by increasing th ...


7
Roger L Schultz, Paul D Ringgenberg, Jimmie R Williamson Jr: Hydraulic control system for downhole tools. Halliburton Energy Services, J Richard Konneker, March 25, 2003: US06536530 (48 worldwide citation)

A hydraulic control system for downhole tools enables convenient selection and actuation of a well tool assembly from among multiple well tool assemblies installed in a well. Each well tool assembly includes a control module having a selecting device and a fluid metering device. A predetermined rang ...


8
Jimmie R Williamson Jr: Circulation control valve and associated method. Halliburton Energy Services, Marlin R Smith, January 11, 2011: US07866402 (35 worldwide citation)

A circulation control valve. A method of controlling circulation flow between an interior flow passage of a tubular string and an annulus external to the tubular string in a subterranean well includes the steps of: interconnecting a valve in the tubular string, the valve including at least one openi ...


9
Frank D Kalb, Jimmie R Williamson Jr, James D Vick Jr: Safety valve with flapper/flow tube friction reducer. Halliburton Energy Services, Marlin R Smith, January 12, 2010: US07644767 (30 worldwide citation)

A safety valve with a flapper/flow tube friction reducer. A safety valve for use in a subterranean well includes a closure assembly, an operating member which engages the closure assembly, and at least one of the closure assembly and the operating member including a friction reducing device which pr ...


10
Jimmie R Williamson Jr: Safety valve, sealing ring and seal assembly. Halliburton Company, Tracy W Druce, J Richard Konneker, March 15, 1994: US05293943 (24 worldwide citation)

A downhole, inline well safety shutoff valve has a spring-loaded, normally closed flapper shutoff valve element that may be opened by a downwardly driven movement of an operator tube coaxially and slidably disposed within the tubing string bore. The operator tube is vertically driven by a rod struct ...