Decline Analysis Solution

Decline Analysis Solution - Decline Curve Analysis...

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Decline Curve Analysis Forecasting future production is the most important part in the economic analysis process but is often the weakest part of the analysis. Decline curve analysis is a good tool to use in forecasting IF the production is naturally declining. Decline curves are characterized by three factors: - Initial production rate - the curvature of the decline - the rate of decline
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Decline Curve Analysis, (cont.) There are three commonly recognized types of decline curves Exponential: d = d i = Constant Hyperbolic: d = d i (q/q i ) b Harmonic: d = d i (q/q i ) b is the decline exponent and d i is the decline rate at the start of the current decline period (initial decline) The decline rate has the units of reciprocal time. If multiplied by 100, the decline rate is the percentage change in the current rate with time, i.e., if d is 0.10/ yr., the current rate is declining at a rate of 10% per year. d is ALWAYS positive.
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Exponential Decline The equations describing constant percentage decline are derived by integrating the differential equation which describes decline, i.e., the instantaneous decline rate is a constant percentage of the instantaneous production rate. The integration
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Decline Analysis Solution - Decline Curve Analysis...

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