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US 6,234,030 B1Granted
Multiphase metering method for multiphase flow
AssigneeRosewood Equipment Company
InventorBryan V. Butler
Life of this patent
Estimating the term…
Abstract
The present invention includes a method for multiphase metering of multiphase flow. the method begins with reducing gas volume to about 20% or less, then pumping the flow stream through two meters, a cut meter and a mass flow meter, arranged in series. Computations may be made on the flow stream to determine net oil rate, water cut, and gas fraction in the flow stream.
Claims18
A multiphase metering method for a multiphase flow stream including gas, water, and oil and having a gas volume and a pressure, comprising the steps of:
- reducing the gas volume in the multiphase flow stream;
- determining a first water cut value of the multiphase flow stream;
- determining a second water cut value of the multiphase flow stream;
- comparing the first water cut value to the second water cut value to estimate the gas volume present in the multiphase flow stream;
- and
- computing at least one parameter of the multiphase flow stream considering the estimated gas volume in the multiphase flow stream.
3 more elements
A system for multiphase metering of a multiphase flow stream including gas, water, and oil, comprising:
- a gas diversion separator reducing a gas volume in the multiphase flow stream;
- a mass flow meter in fluid communication with said gas diversion separator, and mass flow meter determining a first water cut value;
- a water cut meter connected in series with said mass flow meter, the water cut meter determining a second water cut value;
- and
- a computing device in communication with the mass flow meter and the water cut meter, the computing device comparing the first water cut value to the second water cut value to estimate the gas volume present in the multiphase flow stream, the computing device further computing at least one parameter of the multiphase flow stream considering the estimated gas volume in the multiphase flow stream.
2 more elements
Dependencies are inferred from the claim text.