Velocity Profile Survey in a 16-in. Custody-Transfer Orifice Meter for Natural Gas

Abstract

Description of a research project conducted at Chevron USA Inc.'s Venice, L.A., facility to ascertain that the flow condition inside a nominal 16-in; (406 mm) custody-transfer orifice meter was in compliance with American Gas Assn. (AGA) requirements. The test successfully demonstrated the techniques and equipment developed for determining actual flow distribution inside orifice meters in the field under normal operating conditions. This technology can be used to detect detrimental flow profiles and to verify compliance with AGA requirements on flow conditions in custody-transfer orifice meters.