Figure 7
Production decline data for Miller Heirs 1-10H well producing from Fayetteville Shale. The Millers Heirs well is in the Arkoma Basin, Arkansas, Lease # 383264348; January 2006 - August 2011. The line passing through the production data is the decline curve calculated from the kinetic model in Figure 3 with the following rate constants and initial concentrations (63 iterations): k = 0.00012; k1 = 0.1; k-1 = 0.005; k2 = 0.16; [Cn] = 100 (constant); [Cx] = 250; (Cx) = 90; [···] = 5. The rate constants and starting concentrations in Figure 3 were hand-adjusted to these values to approximate the general shape of the Miller Heirs data. The line is not a best-fit line or the DED1 regression line to the data. The respective DED1 regression equations are: Miller Heirs data (R2 = 0.99): R = 20.7 e-0.266t + 6.71 e-0.039t + 1.50. Model, Blue line: R = 16.0 e-0.197t + 6.60 e-0.0526t + 1.95.