In-situ gas meter proving
- Chevron Petroleum Technology Co., La Habra, CA (United States)
In natural gas custody and allocation measurement, the users typically installed and operated their orifice meters according to ANSI/API 2530 (AGA 3) standard. It is not a common practice now to prove orifice meters in field operation. However, the recent revision of ANSI/API 2530, Part 1, standard for orifice meter flow measurement allows users to prove meters under operating conditions using the actual fluid with the actual orifice plate and recording system in place. The standard recognizes that when accurate measurement is required, any deviation from the standard`s specifications will result in a higher measurement uncertainty. In fact, recent studies have shown that meter installation effects and meter tube surface roughness operating within the standard specifications can contribute additional measurement bias errors. On-site proving of gas flow meters can be performed at field locations to calibrate out bias errors and improve overall measurement uncertainty. This paper will illustrate how orifice flow measurement accuracy can be improved by in-situ meter proving. In addition, the current technology of proving methods and field operating performance data will be discussed.
- OSTI ID:
- 146324
- Report Number(s):
- CONF-950553--
- Country of Publication:
- United States
- Language:
- English
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