| 摘要 |
A method and system are provided for controlling the production of oil and g as in a well such that the well operates at the edge of gas coning. Thereto the flow rate and/or pressure of the produced well effluents are controlled by a dynamically controlled choke such that continously a limited amount of gas i s entrained in the produced crude oil, whereas full gas coning and breakthroug h of gas from the gas cap is prevented. The choke may be controlled by a contr ol system which includes an algorithm that takes wellhead temperatures, pressur es and choke position as measured variables and which maintains the average bul k velocity of the well effluents at a substantially constant and relatively hi gh level. Optionally, the system also maintains an optimal gas-to-liquid ratio of the well effluents.
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