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US 11,768,190 B2Granted
Detecting amine-based inhibitors in drilling fluids
AssigneeHalliburton Energy Services, Inc.
InventorsPreston Andrew May, Jay Paul Deville
Life of this patent
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Abstract
Described herein are methods to determine an amount of shale inhibitor in drilling fluids used in wellbore operations. In some cases, methods include receiving a sample of a drilling fluid, removing solids from the sample to produce a solids-free fluid, contacting the solids-free fluid with an anion to produce a precipitate in a test solution, and determining an amount of an amine-based shale inhibitor within the sample by measuring the amount of the precipitate in the test solution.
Claims19
A method comprising:
- receiving a sample of a drilling fluid;
- removing solids from the sample to produce a solids-free fluid, wherein removing solids from the sample to produce the solids-free fluid comprises:
- removing solids from the sample to produce an initial solids-free fluid;
- contacting the initial solids-free fluid with sodium perchlorate to produce an initial precipitate in an initial test solution;
- and
- removing the initial precipitate from the initial test solution to produce the solids-free fluid;
- contacting the solids-free fluid with an anion to produce a precipitate in a test solution;
- and
- determining an amount of an amine-based shale inhibitor within the sample by measuring an amount of the precipitate in the test solution.
6 more elements
A system comprising:
- a solids removal device configured to remove solids from a sample of a drilling fluid to produce a solids-free fluid by:
- removing solids from the sample to produce an initial solids-free fluid;
- contacting the initial solids-free fluid with sodium perchlorate to produce an initial precipitate in an initial test solution;
- and
- removing the initial precipitate from the initial test solution to produce the solids-free fluid;
- a vessel configured to receive at least a portion of the solids-free fluid and an anion and collect a precipitate produced upon contacting the solids-free fluid with the anion;
- and
- an analyzer configured to determine an amount of an amine-based shale inhibitor within the solids-free fluid by measuring an amount of the precipitate.
5 more elements
An apparatus comprising:
- an analyzer configured to determine an amount of an amine-based shale inhibitor in a solid-free sample of drilling fluid by measuring an amount of a precipitate produced upon contacting the solids-free sample of drilling fluid with an anion, wherein a solids removal device is configured to prepare the solid-free sample by:
- removing solids from a sample to produce an initial solids-free fluid;
- contacting the initial solids-free fluid with sodium perchlorate to produce an initial precipitate in an initial test solution;
- and
- removing the initial precipitate from the initial test solution to produce the solid-free sample.
2 more elements
Dependencies are inferred from the claim text.