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| #Initial decline rate (Di) | | #Initial decline rate (Di) |
| #The degree of curvature of the line (b). | | #The degree of curvature of the line (b). |
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| Arps did not provide physical reasons for the three types of decline. He only indicated that exponential decline (b=0) is most common and that the coefficient b generally ranges from 0 to 0.5. | | Arps did not provide physical reasons for the three types of decline. He only indicated that exponential decline (b=0) is most common and that the coefficient b generally ranges from 0 to 0.5. |
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| [[#Top|Back to top]] | | [[#Top|Back to top]] |
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| ====Hyperbolic exponent==== | | ==== Hyperbolic exponent ==== |
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| The hyperbolic exponent ( b) is the rate of change of the decline rate with respect to time. This means that “b” is the second derivative of production rate with respect to time. | | The hyperbolic exponent ( b) is the rate of change of the decline rate with respect to time. This means that “b” is the second derivative of production rate with respect to time. |