| 摘要 |
The method of the invention makes it possible to determine the hydrocarbon flow rate Qhe in an oil well in production, by causing data acquisition apparatus to pass along the well once only, the data acquisition apparatus being provided with local sensors making it possible to distinguish between water and hydrocarbon. During the single pass, the hydrocarbon bubble count Bc per unit time, the water holdup Hw in the fluid, and the flow section A of the well are measured. The flow rate Qhe is calculated in real time by using the following relationship:where d represents the diameter of the hydrocarbon bubbles and is calculated by applying a mathematical model. This model is preferably given by the following relationship:where D is the diameter of the well, alpha is a coefficient generally equal to 0.3, and dn is the nominal diameter of the hydrocarbon bubbles when the water holdup Hw ends towards 1. dn is generally chosen to be equal to 1.5 mm.
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