1
Bradley L Todd, Phillip M Starr, Loren C Swor, Kenneth L Schwendemann, Trinidad Munoz Jr: Biodegradable downhole tools. Halliburton Energy Services, John W Wustenberg, Conley Rose P C, April 8, 2008: US07353879 (187 worldwide citation)

A disposable downhole tool or a component thereof comprises an effective amount of biodegradable material such that the tool or the component thereof desirably decomposes when exposed to a wellbore environment. In an embodiment, the biodegradable material comprises a degradable polymer. The biodegra ...


2
John C Gano, Kenneth L Schwendemann, Darrin N Towers, Ralph Harvey Echols, Perry Carter Shy: Wear-resistant, variable diameter expansion tool and expansion methods. Halliburton Energy Services, Peter V Schroeder, April 20, 2004: US06722427 (121 worldwide citation)

The inventions provide apparatus and methods for radially expanding a tubular deployed in a subterranean well by moving an expansion tool axially through the well. An expansion tool apparatus may have wear faces attached to at least a portion of the outer periphery of a mandrel for contacting the in ...


3
Darrin N Towers, Kenneth L Schwendemann: Downhole separator for use in a subterranean well and method. Halliburton Energy Services, Paul I Herman, James J Murphy, April 9, 2002: US06367547 (117 worldwide citation)

In accordance with the present invention, a downhole separation tool is provided which utilizes a downhole separation chamber with a series of fluid regulators responsive to a formation fluid and constituent components for separate desirable formation yields from the less desirable yields prior to l ...


4
Phillip M Starr, Loren C Swor, Kenneth L Schwendemann: Disposable downhole tool with segmented compression element and method. Halliburton Energy Services, John W Wustenberg, Baker Botts L, May 1, 2007: US07210533 (102 worldwide citation)

A disposable downhole tool includes an elongated body and a compression element. The compression element is disposed about the elongated body. The compression element includes at least one preconfigured division at disposal of the disposable downhole tool.


5
Wesley J Burris II, Kenneth L Schwendemann, Phillip M Starr, Michael L Fripp, John J Goiffon, John H Hales, John Rodgers, Darrin N Towers: Downhole tool with navigation system. Halliburton Energy Services, John W Wustenberg, Conley Rose P C, April 29, 2008: US07363967 (98 worldwide citation)

A downhole tool for use in a well bore comprises an onboard navigation system for determining the location of the tool within the well bore, wherein the tool is moved along at least a partial length of the well bore via an external force. A method of locating a downhole tool in a well bore comprises ...


6
Kenneth L Schwendemann, Oliver W McCracken, Cary G Mondon, Larry C Wortham: Well valve control system. Otis Engineering Corporation, Thomas R Felger, January 13, 1987: US04636934 (96 worldwide citation)

An electro/hydraulic system for controlling remotely located valves or other types of hydraulically powered equipment. The electrical system uses multiple microprocessors to send, validate, and execute commands. Microprocessors at the central control station constantly communicate with and monitor s ...


7
Wesley J Burris II, Kenneth L Schwendemann, Phillip M Starr, Michael L Fripp, John J Goiffon, John H Hales, John Rodgers, Darrin N Towers: Methods of servicing a well bore using self-activating downhole tool. Halliburton Energy Services, John W Wustenberg, Conley Rose P C, January 29, 2008: US07322416 (78 worldwide citation)

A method of servicing a well bore comprises deploying into the well bore a zonal isolation device operable to self-set at a sensed location, and self-setting the zonal isolation device to hold at the sensed location without receiving command communications from the surface, wherein the zonal isolati ...


8
Kenneth L Schwendemann, Timothy J Noack: Valve control system. Halliburton Company, James R Duzan, Roland O Cox, November 14, 1989: US04880060 (62 worldwide citation)

A hydraulic control system for controlling a retainer valve in an underwater well test system. The control system is contained in a housing in the test string above the retainer valve. The control system and valve are operated by a surface control manifold via control conduits extending between the ...


9
Kenneth L Schwendemann: Remotely actuated rupture disk. Halliburton Energy Services, Paul I Herman, David W Carstens, September 17, 2002: US06450263 (56 worldwide citation)

A remotely actuated rupture disk can be ruptured upon the receipt of a predetermined signal. The disk can be placed in a port, thereby separating different pressure regions. For example, if the disk is placed in a downhole tool assembly, the disk might be used to isolate a specific chamber from the ...


10
Steven C Speegle, Kenneth L Schwendemann, Michael B Vinzant, Robert W Crow, Cary G Mondon: Subsurface safety valve. Otis Engineering Corporation, Thomas R Felger, May 15, 1984: US04448216 (51 worldwide citation)

A surface controlled subsurface safety valve having a ball type valve closure. The ball member and its associated components are protected from damage by preventing excessive control fluid pressure from applying force to the ball member. Also, rotation of the ball member is prevented until any diffe ...