Accurate temperature measurement is one of the most critical—and most overlooked—factors in crude oil custody transfer. API standards and BLM CFR 3174 mandate regular calibration for a reason: even a 1°F error can distort net volumes, invalidate meter proving, and expose operators to costly non-compliance.

Witnessing meter provings is one of the most effective ways to protect all parties in custody transfer. By having producers, transporters, and purchasers present, everyone can verify that the proving was performed correctly, meter factors are accurate, and documentation meets regulatory requirements. This not only builds trust and transparency but also prevents costly disputes and ensures compliance with API standards.

Accurate measurement is the backbone of the oil and gas industry. This article explains why meter proving is essential for financial accuracy, regulatory compliance, and building trust across every transaction.

In API 10.4 grind out testing, a common gray area is how to classify chemical additives—should they be counted as oil or water? While the standard doesn’t directly address chemical treatment, how you categorize oil-soluble and water-soluble chemicals can significantly impact custody transfer accuracy, royalty payments, and production balances. This post explores industry best practices for handling chemicals during grind outs and offers guidance on creating consistent, defensible measurement procedures.

Water Cut Monitors