Orifice-meter measurement errors caused by gas-system pulsations can be controlled

Journal Article · Mon Oct 16 04:00:00 EDT 1989 · Oil and Gas Journal; (USA)

OSTI ID:5321741

Gegg, D ^[1]

---

1. Arkla Energy Resources, Shreveport, LA (US)

Pulsation-induced inaccuracies in orifice meter gas-flow measurement can be eliminated or at least better controlled. In today's increasingly competitive gas-supply marketplace, such errors can no longer be ignored. In some instances, pulsations have caused errors of 30-50% in volumes. Policies and procedures of Arkla Energy Resources, Shreveport, La., reflect current efforts to combat the problem. Orifice-meter pulsation error can be divided into three categories: those associated with the primary element itself (across the flange taps); those in the gauge line/manifold/transducer system;; and those within the recording and analysis system. Each category is significant in that total meter error contains all three types (box). While it would be desirable to segregate the problems and solve them independently, it is very difficult to do. It becomes apparent quickly that all three occur in many cases. The focus of this discussion is on primary-element errors; if these are reduced, other errors tend to be minimal.

• OSTI ID: 5321741
• Journal Information: Oil and Gas Journal; (USA), Journal Name: Oil and Gas Journal; (USA) Vol. 87:42; ISSN OIGJA; ISSN 0030-1388
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
032000* -- Natural Gas-- Transport
Handling
& Storage
440800 -- Miscellaneous Instrumentation-- (1990-)
47 OTHER INSTRUMENTATION
ACCURACY
ENERGY SOURCES
ENERGY SYSTEMS
ERRORS
FAILURE MODE ANALYSIS
FLOWMETERS
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
MEASURING INSTRUMENTS
METERING
METERS
NATURAL GAS
NATURAL GAS DISTRIBUTION SYSTEMS
OPENINGS
ORIFICES
PULSATIONS
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS