Systems and methods for downhole fluid compatibility
First Claim
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1. A downhole tool, comprising:
- an inlet disposed on an exterior of the tool for engaging a formation;
a chamber fluidly connected to the inlet, wherein a test fluid is disposed in the chamber;
means for introducing the test fluid from the chamber into the formation;
a sensor arranged to detect a reaction taking place between the test fluid and a fluid within the formation, wherein the reaction is taking place within the formation and is detected within the formation; and
a controller operatively coupled to the sensor and configured to make a determination of compatibility of the test fluid with the formation fluid based on the detected reaction.
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Abstract
Methods for performing downhole fluid compatibility tests include obtaining an downhole fluid sample, mixing it with a test fluid, and detecting a reaction between the fluids. Tools for performing downhole fluid compatibility tests include a plurality of fluid chambers, a reversible pump and one or more sensors capable of detecting a reaction between the fluids.
56 Citations
14 Claims
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1. A downhole tool, comprising:
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an inlet disposed on an exterior of the tool for engaging a formation; a chamber fluidly connected to the inlet, wherein a test fluid is disposed in the chamber; means for introducing the test fluid from the chamber into the formation; a sensor arranged to detect a reaction taking place between the test fluid and a fluid within the formation, wherein the reaction is taking place within the formation and is detected within the formation; and a controller operatively coupled to the sensor and configured to make a determination of compatibility of the test fluid with the formation fluid based on the detected reaction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A downhole tool for testing fluid compatibility with a subterranean formation fluid, comprising:
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an inlet disposed on an exterior of the tool for engaging a formation; a first chamber fluidly connected to the inlet via a conduit; a second chamber fluidly connected to the first chamber; means for combining a sample fluid obtained from the formation and a test fluid disposed in the second chamber; at least one sensor arranged relative to at least one of the first and second chambers such that the sensor detects a reaction taking place between the sample fluid and the test fluid; a controller operatively coupled to the sensor for making a determination of the compatibility of the test fluid with the fluid sample based on the reaction; a third chamber fluidly connected to both the first and second chambers, wherein the means for combining includes means for moving the contents of the first and second chambers into the third chamber; and means for introducing the test fluid into the formation, wherein the at least one sensor is arranged such that the sensor can detect a reaction taking place between the test fluid and the formation fluid within the formation, and wherein the controller is configured to make a determination of the compatibility of the test fluid with the formation fluid based on the reaction. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification