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.
Claims35
A formation tool comprising:
- a probe including one or more inner channels and one or more outer channels, the inner channels and outer channels having at least one of regulated flow rates or pressures therebetween;
- the one or more outer channels captures more contaminated fluid than the one or more inner channels;
- and
- the probe defined by a height and a width, where the height is greater than the width.
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A formation tool comprising:
- a probe including one or more inner channels and one or more outer channels, the inner channels and outer channels having at least one of regulated flow rates or pressures therebetween;
- the one or more outer channels captures more contaminated fluid than the one or more inner channels;
- and
- the probe defined by a height and a width, where the height is greater than the width;
- at least one pump operatively coupled with at least one of the one or more inner channels or the one or more outer channels.
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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 height is greater than the width;
- regulating at least one of flow rates or pressures between the one or more inner channels and the one or more outer channels.
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Dependencies are inferred from the claim text.