Baker Hughes, a Ge Compnay, LLC

Baker Hughes Oilfield Operations LLC

Shiva Paramhans

David A Hejl

Russell W Mceacharn

Russell W McEacharn

An extendable downhole tool including a first extendable probe, a second extendable probe and a pressure system configured to apply pressure to the first extendable probe and the second extendable probe. The pressure system also include an extension valve configured to pass fluid pressure to an inner surface of a first piston and a second piston and a retracting valve configured to pass the fluid pressure to an outer surface of the first piston and the second piston. An area ratio of the first piston may be greater than an area ratio of the second piston. The extendable downhole tool may also include a screen and a screen scraper associated with one or more of the first extendable probe and the second extendable probe.

Extendable downhole tool and related systems, apparatus, and methods

An extendable probe for a formation testing tool includes a piston housing having a first diameter portion and a second diameter portion thereof. A piston including a piston base and a piston conduit. A piston base seal disposed between the piston base and the first diameter portion of the piston housing. The piston base seal representing an area; a piston conduit seal disposed between the piston conduit and the second diameter portion, the piston conduit seal representing an area. A pin in operative communication with the piston housing and extending though the piston; a pin seal disposed between the pin and the piston base, the pin seal representing an area; and wherein the piston conduit seal. Piston base seal and pin seal each are configured to adhere to the equation: piston conduit seal area=piston base seal area&#x2212;pin seal area. A method for querying a formation fluid.

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Houston, TX, United States of America

Shiva Paramhans