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HWK 4-1 - Sediment Depth Pore Pressure(ft Gradient(psi/ft...

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PGE 430 Drilling Homework 4 Due at lecture time: Oct. 9th (1) Please construct a mud window as mud weight (ppg) versus depth (ft) for the following drilling prospect. Data Water Depth (ft) 0 Sea Water SG 1.02 Overburden SG 2.6 Pore Fluid SG 1.074 Sediment Datum (ft) 100 (base of conductor casing) Total Sediment Depth (ft) 10000 Trip Margin (ppg) 0.5 Kick Margin (ppg) 0.5 The pore fluid gradient is estimated to be as follows:
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Unformatted text preview: Sediment Depth Pore Pressure (ft) Gradient (psi/ft) 100 0.433 595 0.433 1090 0.433 1585 0.433 2080 0.44 2575 0.45 3070 0.45 3565 0.45 4060 0.45 4555 0.45 5050 0.45 5545 0.45 6040 0.565 6535 0.587 7030 0.607 7525 0.626 8020 0.646 8515 0.65 9010 0.66 9505 0.67 10000 0.68 (2) From your mud window identify the depth of the top of the abnormally pressured region....
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