Saudi Aramco GI 405.002 CUSTODY TRANSFER OF SALES GAS AND ETHANE

This General Instruction (GI) outlines the essential policy guidelines and application requirements for the accurate custody measurement of hydrocarbon gases, specifically Natural Gas and Ethane, within Saudi Aramco operations. It provides comprehensive procedures for the physical and fiscal documentation of hydrocarbon movements, ensuring precise quantity and quality information for ownership and responsibility transfers between Saudi Aramco and its customers.

The document details requirements for metering equipment, including orifice, ultrasonic, and Coriolis meters, as well as flow computers, temperature, and pressure measurement devices. It also specifies protocols for inspection, verification, calibration, sealing, calculation, billing, and record-keeping to maintain operational integrity and prevent unauthorized adjustments.

Furthermore, this GI defines the roles and responsibilities of various departments, such as the Operating Organization and Process & Control Systems Department, in implementing and enforcing these critical measurement standards. Ideal for measurement engineers, operations managers, HSE officers, and regulatory compliance specialists working in the oil and gas sector.