Correlations predict gas-condensate flow through chokes

Journal Article · Mon Mar 16 00:00:00 EST 1992 · Oil and Gas Journal; (United States)

OSTI ID:5602627

Osman, M E; Dokla, M E ^[1]

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1. Univ. of United Arab Emirates, Abu Dhabi (AE)

Empirical correlations have developed to describe the behavior of gas-condensate flow through surface chokes. The field data were obtained from a Middle East gas-condensate reservoir and cover a wide range of flow rates and choke sizes. Correlations for gas-condensate systems have not been previously available. These new correlations will help the production engineer to size chokes for controlling production of gas-condensate wells and predicting the performance of flowing wells under various conditions. Four forms of the correlation were developed and checked against data. One form correlates choke upstream pressure with liquid production rate, gas/liquid ratio, and choke size. The second form uses gas production rate instead of the liquid rate. The other two forms use the pressure drop across the choke instead of upstream pressure. All four of the correlations are presented in this paper as nomograms. Accuracy of the different forms was checked with five error parameters: root-mean-square error, mean-absolute error, simple-mean error, mean-percent-age-absolute error, and mean-percentage error. The correlation was found to be the most accurate when pressure-drop data are used instead of choke upstream pressure.

• OSTI ID: 5602627
• Journal Information: Oil and Gas Journal; (United States), Vol. 90:11; ISSN 0030-1388
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
29 ENERGY PLANNING
POLICY AND ECONOMY
GAS CONDENSATES
FLOW RATE
MIDDLE EAST
GAS CONDENSATE FIELDS
ACCURACY
GAS CONDENSATE WELLS
TWO-PHASE FLOW
WELL DRILLING
CONDENSATES
DRILLING
FLUID FLOW
FLUIDS
GEOLOGIC DEPOSITS
LIQUIDS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NATURAL GAS LIQUIDS
PETROLEUM DEPOSITS
RESOURCES
WELLS
033000* - Natural Gas- Properties & Composition
030300 - Natural Gas- Drilling
Production
& Processing
294003 - Energy Planning & Policy- Natural Gas