1
Harry R Hanson, Hollis A Baugh, Thomas W Childers, James B Greer: Well packers using metal to metal seals. Exxon Production Research Company, Michael A Nametz, Gary D Lawson, November 28, 1978: US04127168 (95 worldwide citation)

An improved well packer for use in sour gas wells is disclosed. The improved packer includes a cylindrical mandrel encircled with a resilient metal seal ring, means for anchoring the packer at a predetermined vertical depth, means for radially expanding the seal rings so as to cause sealing engageme ...


2
Joseph A Burkhardt, Thomas W Childers, Harry R Hanson, Bobby M Harkrider: Hydraulically operated actuator. Exxon Production Research Co, John S Schneider, February 7, 1984: US04429620 (59 worldwide citation)

A hydraulically operated actuator employs multiple metal-to-metal static seals to isolate the hydraulic fluid and to isolate the actuator from surrounding contaminating (ambient) fluids. A housing contains at least two linearly spaced apart chambers. A piston reciprocates from a retracted position t ...


3
Gervase M Chaplin, Thomas W Childers: Apparatus and method for externally testing conduit connections. Exxon Production Research Company, John S Schneider, April 26, 1977: US04019371 (37 worldwide citation)

Apparatus and method are disclosed for externally testing flanged or hubbed connections used on fluid conducting conduits. A ring gasket fits between the faces of the connecting flanges or hubs to effect a fluid tight seal. A test ring also fits between the faces of the hub or flange connection in a ...


4
Albert R Sinclair, Arthur C Daughtry, Thomas W Childers, Joseph A Burkhardt: Method and apparatus for making subsea pipe connections. Exxon Production Research Company, John S Schneider, April 26, 1977: US04019334 (36 worldwide citation)

A subsea pipeline hub is connected to the hub of an adjacent spool piece connected to an in-place manifold of a subsea structure used in the production of oil and/or gas. The pipeline hub is positioned relative to the opposing spool hub and a remotely operated pipeline connecting tool is lowered fro ...


5
David P Herd, John W McCaskill, Thomas W Childers: Balanced stem fail-safe valve system. Exxon Production Research Company, John S Schneider, January 20, 1976: US03933338 (28 worldwide citation)

A balanced stem fail-safe valve controls flow of fluids through a submerged pipeline. A closed subsea hydraulic pressure system operates or powers the valve. In the fail-safe mode the operating or reservoir pressure equals ambient sea pressure. A valve housing is arranged on the pipeline and a valve ...


6
Dale V Johnson, Thomas W Childers: Metal seal tubing plug. Exxon Production Research Co, J S Schneider, H E Cox, March 24, 1987: US04651818 (28 worldwide citation)

A plug is disclosed for sealing off in a tubing having a sealing surface. A housing contains an annular metal seal means and two sets of segmented expanding lockdown rings that react with three solid rings to provide a downward motion. The expanding lockdown rings consist of a solid tapered ring tha ...


7
Joseph A Burkhardt, Thomas W Childers, Roger J Koerner: Rotary motion failsafe gate valve actuator. Exxon Production Research Company, John S Schneider, November 2, 1976: US03989223 (26 worldwide citation)

An hydraulically operated failsafe valve actuator for use on non-rising valve stems, particularly in a subsea environment. A rotatable shaft is connected to the non-rising valve stem. In one embodiment the valve is actuated to open by a fluid pressure operated motor acting against the bias of a spri ...


8
Dale V Johnson, Joseph A Burkhardt, Thomas W Childers: Heave compensated stabbing and landing tool. Exxon Production Research Company, Herbert E O Niell, August 22, 1989: US04858694 (22 worldwide citation)

A heave compensated stabbing and landing tool and method for use on a floating platform comprises a tool attached to a heave compensator on the floating platform. The tool, attached at one end to a taut line anchored to the seabed, includes means for gripping, raising and lowering a tubing string. T ...


9
Joseph A Burkhardt, Thomas W Childers: Valve stem static seal system. Exxon Production Research Company, John S Schneider, May 11, 1976: US03955793 (9 worldwide citation)

A valve stem system is described for use in submerged oil and/or gas production systems designed to improve the reliability of subsea valves. A remotely rotatable pressure cap is threadedly engagable onto and removable from a valve bonnet which is mounted on a valve. The valve bonnet surrounds one s ...


10
Louis M Regan, Thomas W Childers, Roy E Anderson, Joseph A Burkhardt: Metal seal tubing plug. Exxon Production Research Company, John S Schneider, December 18, 1979: US04178992 (9 worldwide citation)

A metal seal plug for use in sealing a tubing run is disclosed. The plug includes upper and lower tubular housings connected together for limited movement therebetween by an inner mandrel. The lower housing contains a locking unit which when actuated locks into a recess formed in the tubing to lock ...