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HWK 7 - occurring and the fluid friction gradient in the...

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PGE 362 Homework 7 Due at the start of lecture on April 13. Data Set: 6 1 psi/ft 0.65 psi/ft =0.7 10,000' 1 10 psi 0.25 10 md drainage area = 80 acres/well 0.167' Productive thickness = 25'. Gross fracture hieght V pore w p D E x v k r σ α = = = = = = = n' 2 f L 3 m m = 75'. 0.6 0.0045 lb -sec /ft 1.01 0.0036 ft/ min 25 bbl/min 230 lb /ft = 8 lb /gal L i p f n K C q c γ ρ = = = = = = Please determine the following. (1) Fracturing gradient. (2) Dynamic fracture width at the well bore. (3) Average dynamic fracture width. (4) Propped fracture width. (5) Fluid efficiency. (6) Volume of fluid to tinject. (8) Mass of proppant to use. (9) Time to pump the job. (10) Proppant pumping schedule. (11) Surface pumping pressure at the following moments if no near well bore friction is
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Unformatted text preview: occurring and the fluid friction gradient in the pipe is 0.0023 psi/BPM/ft. Include friction in the fracture as it grows.- during the pad- at 4 ppg proppant- at 6 ppg proppant- at 8 ppg proppant- at the end of the flush (12) The maximum allowed surface pressure at a screen out if 1,000 psi is held on the annulus during the job and the annulus fluid is fresh water. The tube in question is 11.6 ppf, 4 1/2", N-80, LTC casing. (13) What is the expected stimulation effect if 20/40 ISP is used (use Fig. 16-5 and17-9)? (14) What is the expected folds of production increase if the job is successful?...
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