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US 9,284,837 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
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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.
Claims14
A method for testing a formation, the method comprising:
- pumping fluid through a probe including one or more inner channels and one or more outer channels, where the probe is defined by a height and a width, and the heigreater than the width to define an elongate shape for the one or more inner channels and the one or more outer channels;
- regulating at least one of flow rates or pressures between the one or more inner channels and the one or more outer channels;
- and
- clearing the one or more inner channels including pumping fluid out of the one or more inner channels while pumping into the one or more outer channels or clearing the one or more outer channels including pumping fluid out of the one or more outer channels while pumping into the one or more inner channels.
1 more element
Dependencies are inferred from the claim text.