Back to results
US 9,752,433 B2Granted
Focused probe apparatus and method therefor
AssigneeHalliburton Energy Services, Inc.
InventorsMark A. Proett, Anthony H. van Zuilekom, Gregory N. Gilbert
Life of this patent
Estimating the term…
Abstract
Apparatus and methods for downhole formation testing including use of a probe having inner and outer channels adapted to collect or inject injecting fluids from or to a formation accessed by a borehole. The probe straddles one or more layers in laminated or fractured formations and uses the inner channels to collect fluid.
Claims20
A formation tool comprising:
- a probe having an inner channel surrounded by an outer channel, the probe structured such that the inner channel and the outer channel have an elongate shape, the probe operable to engage a wall of a borehole and extract fluid from a formation adjacent the borehole;
- one or more transducers to regulate flow rate and/or pressure in the inner channel and the outer channel according to a relationship of flow rate and/or pressure of the inner channel to the outer channel;
- and
- pumps to pump the fluid through the probe, the pumps arranged to operatively clear the inner channel by pumping fluid out of the inner channel while pumping fluid into the outer channel or to operatively clear the outer channel by pumping fluid out of the outer channel while pumping fluid into the inner channel.
1 more element
Dependencies are inferred from the claim text.