1
James W Mueller: Progessive cavity pump. Halliburton Company, James R Duzan, Neal R Kennedy, April 4, 1989: US04818197 (32 worldwide citation)

A progressive cavity pump capable of operating at both high and low system pressures. The pump includes a housing with an elastomeric stator disposed therein. A rotor is rotatably and pumpingly disposed in a pumping chamber defined by the stator. A support member is disposed annularly between inner ...


2
Keith E Blaschke, James W Mueller: In-situ linear flow proppant conductivity test cell. Halliburton Company, Mark E McBurney, J A Walkowski, July 18, 1989: US04848145 (27 worldwide citation)

An in-situ linear flow proppant conductivity test cell is provided which allows a downhole fracturing operation to be accurately simulated under laboratory conditions. The test apparatus includes a housing, having pistons therein, a plurality of heating elements, and a packer with a plurality of por ...


3
James W Mueller, Scott A Berning: Apparatus for making non-contact angular deflection measurements. Halliburton Company, James R Duzan, E Harrison Gilbert III, May 26, 1987: US04668911 (14 worldwide citation)

An angular displacement indicating apparatus includes internal and external magnets disposed so that the external magnet tracks the internal magnet when a shaft to which the internal magnet is connected rotates. The external magnet is connected to a rotary variable differential transformer, for exam ...


4
Mark C Ehlert, James W Mueller: Fluid testing apparatus and method. Halliburton Company, Joseph A Walkowski, E Harrison Gilbert III, Mark E McBurney, May 16, 1989: US04829811 (8 worldwide citation)

A fluid testing apparatus comprises a container for holding a fluid to be tested and a member disposed within the container so that the member is rotatable within a fluid to be tested within the container. The container has a wall defining a cavity into which the member extends. A magnetically respo ...