Avoiding Missed Gas Volume Flow Measurements in Plunger Lift Wells

by | Apr 20, 2017 | Industry, Measurement Instrumentation, Oil & Gas

Jim Cahill

Chief Blogger, Editor

Measuring flow rates on producing gas wells can be difficult on plunger lift applications. The mechanical plungers are used to remove water slugs which build up and reduce production rates. When the plunger pulls up the well bore, the differential pressure (DP) flow measurement can spike beyond the range of the DP transmitter. This spike is caused by a surge in the flow of natural gas behind the plunger.

This short 1:58 YouTube video, Plunger Lift: Rosemount MultiVariable Transmitters shows how this Rosemount 4088 MultiVariable transmitter with extended range can still accurately read these DP spikes up to 800 inches of water (inH2O).

Traditional DP flowmeters that cannot accurately read these spikes miss gas volume measurements up to 3% of total volume. If a 1000 inH2O DP transmitter is used, then normal flow range measurements will be less accurate than ones spanned for the normal flow rate range.

Accurately measuring these pressure spikes can account for $60,000USD in increased revenue for a typical plunger lift gas well.

Visit the Rosemount 4088 MultiVariable transmitter page to learn more about or chat with an expert. You can also connect and interact with other flow measurement and oil & gas experts in the Flow and Oil & Gas groups in the Emerson Exchange 365 community.

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The opinions expressed here are the personal opinions of the authors. Content published here is not read or approved by Emerson before it is posted and does not necessarily represent the views and opinions of Emerson.