1
Colby M Ross, Dhirajlal C Patel, Timothy F LaBruyere: Isolation washpipe for earth well completions and method for use in gravel packing a well. Halliburton Company, Tracy W Druce, Dennis T Griggs, September 6, 1994: US05343949 (147 worldwide citation)

A zonal isolation washpipe system for isolating a production zone which intersects a wellbore from communication with the surface comprises a seal assembly adapted for sealing engagement within the bore of a well packer disposed about the external circumference of one end of a tubular washpipe, a re ...


2
Colby M Ross, Henry L Restarick, Ralph H Echols III, Phillip T Thomas, Dhirajlal C Patel: One trip backwash/sand control system with extendable washpipe isolation. Halliburton Company, Tracy W Druce, Dennis T Griggs, May 9, 1995: US05413180 (146 worldwide citation)

A travel joint and latching assembly is connected below a gravel pack service tool to set an isolation assembly while performing backwashing and gravel pack operations, in a single trip. The travel joint is protected against inadvertent expansion by a positive mechanical lock assembly which isolates ...


3
Roger L Schultz, William L Bohan: Downhole fluid property measurement tool. Halliburton Company, Tracy W Druce, Lucian Wayne Beavers, July 19, 1994: US05329811 (123 worldwide citation)

Apparatus and methods are provided for measuring a parameter of a hydrocarbon-bearing well fluid sample while the sample is still in place in the well and at downhole pressure and temperature conditions. A tool is lowered into the well to a downhole location. A well fluid sample is trapped in the to ...


4
Christopher A Dines, Clark E Robison, Perry C Shy, William R Welch: Internally sealable perforable nipple for downhole well applications. Halliburton Company, Tracy W Druce, J Richard Konneker, February 21, 1995: US05390742 (119 worldwide citation)

A longitudinally spaced series of tubular nipple structures are installed in a well flow conductor operatively extended through a subterranean well bore. Each nipple structure has a thinned-wall, increased interior diameter longitudinal section through which a plurality of fluid flow openings latera ...


5
Perry C Shy, Christopher A Dines: Dedicated perforatable nipple with integral isolation sleeve. Halliburton Company, Tracy W Druce, Dennis T Griggs, November 8, 1994: US05361843 (106 worldwide citation)

A production nipple is suspended within an uncased bore hole in a slimhole/monobore completion. A deposit of cement is conveyed through the nipple and is spotted in the annulus across the face of the uncased well bore, with the nipple and cement deposit thereafter being perforated by a small diamete ...


6
Ralph H Echols III, Colby M Ross, Phillip T Thomas: Hydraulic setting sleeve. Halliburton Company, Tracy W Druce, Dennis T Griggs, December 27, 1994: US05375662 (105 worldwide citation)

A hydraulic setting apparatus has an isolation sleeve which covers setting ports and prevents entry of hydraulic setting fluid into a pressure settable tool such as an inflatable packer or a hydraulic packer. The mandrel of the setting tool is mechanically coupled to the mandrel of the pressure sett ...


7
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 ...


8
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 ...


9
Roger L Schultz: Surface control of well annulus pressure. Halliburton Company, Tracy W Druce, Lucian Wayne Beavers, December 28, 1993: US05273112 (85 worldwide citation)

An annulus pressure control system is provided for controlling annulus pressure in a well to send remote command signals to a downhole tool in the well. The well has associated therewith a high pressure source and a low pressure dump zone. The system includes at least one control valve having an inl ...


10
Bryant A Arterbury, Holley M Cornette: Foil wrapped base pipe for sand control. Halliburton Company, Tracy W Druce, Dennis T Griggs, May 10, 1994: US05310000 (77 worldwide citation)

The flow apertures of a perforated mandrel are temporarily sealed by a foil covering sheet which is made of a sacrificial material, for example, zinc, aluminum and magnesium The sacrificial covering sheet prevents dirty completion fluid from passing through and in and out of the screen as it is run ...