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US 2012/0068700 A1Published application
Formation Evaluation Capability From Near-Wellbore Logging Using Relative Permeability Modifiers
AssigneeBaker Hughes Incorporated
InventorsSonghua Chen, Tianping Huang
Life of this patent
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Abstract
Nano-particles that possess either selective fluid phase blocks or modify the relative permeability of an earth formation to different fluids are used to inhibit the invasion of borehole mud into the formation. This makes it possible to make formation evaluation measurements using sensors with a shallow depth of investigation.
Claims17
A method of conducting logging operations, the method comprising:
- logging in a borehole penetrating an earth formation using a formation evaluation (FE) sensor, the borehole including a fluid with an added Relative Permeability Modifier (RPM) for inhibiting an invasion of a component of the fluid in the borehole into the earth formation.
An apparatus configured to conduct logging operations, the apparatus comprising:
- a formation evaluation (FE) sensor configured to be conveyed into a borehole in an earth formation;
- a device configured to add a Relative Permeability Modifier (RPM) to a fluid in the borehole for inhibiting an invasion of the fluid in the borehole into the earth formation;
- and
- wherein the FE sensor is further configured to measure a property of at least one of:
- (i) a fluid in the earth formation and (ii) the earth formation.
2 more elements
Dependencies are inferred from the claim text.