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Table 1 Total Depth of Contact Casing Required Surface Casing Test Pressure (lbs. per sq. in.) 0-2500 100 300 2500-3000 150 600 3000-4000 300 600 4000-5000 400 600 5000-6000 500 750 6000-7000 800 1000 7000-8000 1000 1000 8000-9000 1400 1000 9000-Deeper 1800 1000 a. ................
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