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US 12,326,436 B2Granted
Determination of chloride concentration in drilling fluids
AssigneeConocoPhillips Company
InventorsJay Locklear, Molly Merritt
Life of this patent
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Abstract
The invention relates to a system and method for analyzing drilling fluid from a drilling rig for accessing subterranean hydrocarbons. The system and method involve analysis for chloride by replacing conventional chemical titration with electrical conductivity titration.
Claims15
A process for measuring the concentration of chloride in drilling fluid, where the process comprises:
- a) titrating a sample of drilling fluid against silver nitrate;
- b) measuring conductivity of the sample;
- and
- c) determining chloride concentration based on conductivity of the drilling fluid as silver nitrate is progressively added wherein chloride concentration is given by an equivalence point after which conductivity increases as silver nitrate is added.
1 more element
Dependencies are inferred from the claim text.