3 40000 2 hpin 29 20000 hpin2 76 0 00 50 100 150 200

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Unformatted text preview: 0 DSE, psi 80,000 hp/in2 = 0.5 60,000 2 hp/in = 3.3 40,000 2 hp/in = 2.9 20,000 hp/in2 = 7.6 0 0.0 5.0 10.0 15.0 20.0 ROP, ft/hr Figure 4. DSE vs. ROP with experimental data grouped according to the WOB and adding the rock confined strength. 10 SPE 116667 120,000 120,000 WOB= 40,000 lb WOB= 20,000 lb 100,000 100,000 DSE, psi 80,000 0.5 hp/in2< HSI < 1.7 hp/in2 60,000 1.8 hp/in2 < HSI < 5.7hp/in2 40,000 MSE with Eq. 1, psi WOB= 50,000 lb 80,000 60,000 WOB= 50,000 lb 40,000 WOB= 30,000 lb 20,000 20,000 5.8 hp/in2< HSI < 7.9 Rock Confined Strength WOB= 40,000 lb WOB= 20,000 lb WOB= 30,000 lb Rock Confined Strength 0 0 0.0 5.0 10.0 15.0 20.0 25.0 30.0 0.0 5.0 10.0 ROP, ft/hr Figure 5. DSE vs. ROP including rock confined strength. 20.0 25.0 30.0 Figure 6. MSE calculated with Eq. 1 vs. ROP including rock confined strength. 120,000 100,000 100,000 WOB= 50,000 lb 80,000 60,000 WOB= 40,000 lb WOB= 30,000 lb 40,000 WOB= 20,000 lb MSE with Eq. 6, psi 120,000 MSE with Eq. 4, psi 15...
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