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Title: Upstream Natural Gas Sales Verification
Author: Mark B. Fillman, Jayson A. Payne
Source: 2015 American School of Gas Measurement Technology
Year Published: 2015
Abstract: Within the upstream sector of the oil and gas indus- try, the custody transfer of natural gas is usually de- termined by orifice measurement which is governed by a sales agreement between the producer and pipeline company. In most cases, the gas sales agreement references a combination of American Gas Association (AGA), American Petroleum Insti- tute (API), and Gas Processors Association (GPA) standards which are to be incorporated into the cus- tody measurement procedures. Verification that the physical deliveries of natural gas are accurate and accountable, for both parties, is fundamental to the business cycle that occurs each month




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