Difference between revisions of "Gilbert choke equation"
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===Flowing well fluids segregation=== | ===Flowing well fluids segregation=== | ||
Revision as of 18:24, 8 November 2024
Contents
Brief
The most common used formula for multiphase flow through surface chokes by Gilbert [1].
Echometer is used to measure the fluid level in the wells.
Fluid level is used to calculate and monitor the bottom hole pressure of the wells.
Math and Physics
- Failed to parse (unknown function "\GLR"): P_{wh}=\frac{435 \GLR^0.546}{D^1.89} \q
Flowing well fluids segregation
When the well is flowing with the pump this is how fluids segregate in the well bore:
- Oil, gas and water are produced through the tubing from the reservoir to the surface
- Gas is in the annulus from the surface to the fluid level, Hd
- Oil and gas are between the fluid level Hd, and the pump setting depth, Hd
- Water, oil and gas are between pump, Hd and the top of the perforations, Hperfs
- Water is in the rathole
Equation to calculate the BHP from the fluid level
Note that for the deviated wells TVD depths should be used.
Nomenclature
= 9.81, m/s^2
= depth, m
= fluid level, m
= top of the perforations, m
= pump setting depth, m
= pressure, atm
= annulus presssure, atm
= well flowing bottomhole pressure, atm
= density, kg/m^3
= oil specific gravity, dimensionless
= water specific gravity, dimensionless
= well water cut, fraction
References
- ↑ Brown, Kermit (1984). The Technology of Artificial Lift Methods. Volume 4. Production Optimization of Oil and Gas Wells by Nodal System Analysis. Tulsa, Oklahoma: PennWellBookss.
