By M. J. Economides
This workbook is a pragmatic better half to the second one version of the textbook Reservoir Stimulation. the 2 books are meant for use jointly. This new quantity can be fairly invaluable for the educational of recent engineers and petroleum engineering scholars, because it includes nearly a hundred difficulties and their recommendations, plus a long bankruptcy giving facts important for designing a stimulation therapy. Chapters are integrated containing functional difficulties on reservoir and good concerns, rock mechanics, fracturing fluids and proppants, fracture calibration remedies, layout and modeling of propped fractures, review of fracture remedies, layout of matrix remedies, diversion and remedy review, layout and function of acid fractures and stimulation of horizontal wells. those chapters are categorised with letters from A to J to tell apart them from their better half chapters in Reservoir Stimulation. Equations, figures and tables from the textbook are mentioned within the workbook yet aren't reproduced.
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Additional info for A Practical Companion to Reservoir Stimulation
7 x lo-* andp, (from Fig. 6. Then, from Eq. 8-6, q b = 61 STB/d, and from Eqs. 8-7 and 8-8, qVogel = 100 STB/d. From Eq. 8-9, = 61 + [ 100 1 - ( ) ( 71. 2 4700 4700 (E-7) Figure E- 1 contains the standard q vs. p,,,fplots for the three transient IPRs as calculated from Eqs. E-5, E-6 and E-7. 11 A = 320acres k,w = 750 md-ft /Ao = 1 From Fig. 15, and from Eq. 15) = 245STB/d. (E-3) 1 1 From Eqs. 7cp Table E-1-Well 1 1 and reservoir design data for Example E-I. E- 1 PRACTICAL COMPANION TO RESERVOIR STIMULATION 7000 6000 5000 4000 3000 2000 1000 0 100 200 300 400 Producing Rate, q (STB/d) Figure E-1-Transient E-2 IPR curves for Example E-1.
258) (130-" 602) = 660 cp; (C-24) = 197 CP. 1 169) (300-" 5x7) This is a substantial reduction in the viscosity, and it has a major effect on the expected role of the pad fluid, which is to generate the desired fracture widths. B. 75% of fluid pumped Again, from Fig. 5-5 the temperatures are 155°F and 200"F, respectively, for the 100-ft and 250-ft locations. 403, respectively. Table C-2-Flheology of a borate crosslinked fluid containing 40-lb/lOOO gal hydroxypropyl guar. 5 x m. Solution (Ref. Section 5-6) From Eq.
21 lbf sec"'lft', which is obtained from the intercept at y = 1. 64. 36 (C-5) A graph of the apparent viscosity vs. shear rate is shown in Fig. C-2. Then, the power law for this fluid is from Eq. 36. 1 1 100 Shear Rate, f (sec-’) Figure C-1-Experimental c- 2 data for Example C-1. 1000 FRACTURING FLUIDS A N D PROPPANTS 10000 1000 100 10 1 10 I00 1000 Shear Rate, f (sec-I) Figure C-2-Apparent viscosity in a pipe for the fluid in Example C-1 . 001 f t / 6 and using the data in Table C-1, calculate the total leakoff coefficient for both the gas-well and the oilwell data.