1
Edward J Zisk Jr: Sand screen with active flow control and associated method of use. Baker Hughes Incorporated, Madan Mossman & Sriram P C, September 23, 2003: US06622794 (177 worldwide citation)

Apparatus and methods are disclosed for actively controlling the flow of hydrocarbon fluids from a producing formation at the downhole sand screen. A preferred embodiment of the invention provides a fluid flow annulus within the production tube inside of the screen. In a first flow control configura ...


2
Christian F Bayne, Benn A Voll, J Todd Broome, James R Zachman, Graeme H Falconer, Michael W Norris, Edward J Zisk Jr, David A Bilberry, Steve B Hodges: Method of providing hydraulic/fiber conduits adjacent bottom hole assemblies for multi-step completions. Baker Hughes Incorporated, Steve Rosenblatt, January 10, 2006: US06983796 (173 worldwide citation)

A technique for providing auxiliary conduits in multi-trip completions is disclosed. The technique has particular applicability to liner mounted screens which are to be gravel packed. In the preferred embodiment, a protective shroud is run with the gravel pack screens with the auxiliary conduits dis ...


3
Edward J Zisk Jr: Remote closed system hydraulic actuator system. Baker Hughes Incorporated, Cantor Colburn, September 26, 2006: US07111675 (18 worldwide citation)

A hydraulic actuator system includes a power source, a controller in communication with the power source, a piezoelectric stack comprising a plurality of piezoelectric elements disposed within a sleeve to define a chamber at one end of the sleeve, pressure accumulators in fluid communication with th ...


4
Terry R Bussear, Michael A Carmody, Steve L Jennings, Don A Hopmann, Edward J Zisk Jr, Michael Norris: Optical position sensing for well control tools. Baker Hughes Incorporated, Madan Mossman & Sriram P C, September 12, 2006: US07104331 (13 worldwide citation)

An apparatus and methods are disclosed for using optical sensors to determine the position of a movable flow control element in a well control tool. A housing has a movable element disposed within such that the element movement controls the flow through the tool. An optical sensing system senses the ...


5
Edward J Zisk Jr, Terry Bussear: Fiber optic monitoring of flow inside and outside a tube downhole. Baker Hughes Incorporated, Cantor Colburn, January 30, 2007: US07168311 (8 worldwide citation)

An apparatus and method for monitoring and characterizing the fluid flow in and around the tubing string in a wellbore, preferably using fiber optic componentry. The apparatus includes a signal sensing demodulator device and a skin friction sensing device positionable within the wellbore. Both devic ...