6.23 The data in Table 6.24 were obtained in a south Louisiana wel! using a shale...

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6.23 The data in Table 6.24 were obtained in a south Louisiana wel! using a shale density column. a. Determine the shale density in grams per cubic cen- timeter at each depth using the calibration curve given in Fig. 6.25. b. Plot shale density vs. depth as shown in example of Fig. 6.27. c. Determine the normal pressure trend line using shale porosities computed from shale densities obtained above the apparent transition zone. Assume an average grain density of 2.65 g/cm³ and a pore fluid density of 1.074 g/cm³ d. Estimate the formation pore pressure gradient at various depths using the concept of equivalent effective overburden stress. Assume the overburden stress is 1.0 psi/ft and the normal pore pressure gradient is 0.465 psi/ft. Answer: 11,400 psig at 14,000 ft. e. Estimate the formation pore pressure gradient at various depths using the Boatman relationship given in Fig. 6.26. Answer: 12,300 psig at 14,000 ft.. 6.23 The data in Table 6.24 were obtained in a south Louisiana wel! using a shale density column. a. Determine the shale density in grams per cubic cen- timeter at each depth using the calibration curve given in Fig. 6.25. b. Plot shale density vs. depth as shown in example of Fig. 6.27. c. Determine the normal pressure trend line using shale porosities computed from shale densities obtained above the apparent transition zone. Assume an average grain density of 2.65 g/cm³ and a pore fluid density of 1.074 g/cm³ d. Estimate the formation pore pressure gradient at various depths using the concept of equivalent effective overburden stress. Assume the overburden stress is 1.0 psi/ft and the normal pore pressure gradient is 0.465 psi/ft. Answer: 11,400 psig at 14,000 ft. e. Estimate the formation pore pressure gradient at various depths using the Boatman relationship given in Fig. 6.26. Answer: 12,300 psig at 14,000 ft.. 6.23 The data in Table 6.24 were obtained in a south Louisiana wel! using a shale density column. a. Determine the shale density in grams per cubic cen- timeter at each depth using the calibration curve given in Fig. 6.25. b. Plot shale density vs. depth as shown in example of Fig. 6.27. c. Determine the normal pressure trend line using shale porosities computed from shale densities obtained above the apparent transition zone. Assume an average grain density of 2.65 g/cm³ and a pore fluid density of 1.074 g/cm³ d. Estimate the formation pore pressure gradient at various depths using the concept of equivalent effective overburden stress. Assume the overburden stress is 1.0 psi/ft and the normal pore pressure gradient is 0.465 psi/ft. Answer: 11,400 psig at 14,000 ft. e. Estimate the formation pore pressure gradient at various depths using the Boatman relationship given in Fig. 6.26. Answer: 12,300 psig at 14,000 ft.. 6.23 The data in Table 6.24 were obtained in a south Louisiana wel! using a shale density column. a. Determine the shale density in grams per cubic cen- timeter at each depth using the calibration curve given in Fig. 6.25. b. Plot shale density vs. depth as shown in example of Fig. 6.27. c. Determine the normal pressure trend line using shale porosities computed from shale densities obtained above the apparent transition zone. Assume an average grain density of 2.65 g/cm³ and a pore fluid density of 1.074 g/cm³ d. Estimate the formation pore pressure gradient at various depths using the concept of equivalent effective overburden stress. Assume the overburden stress is 1.0 psi/ft and the normal pore pressure gradient is 0.465 psi/ft. Answer: 11,400 psig at 14,000 ft. e. Estimate the formation pore pressure gradient at various depths using the Boatman relationship given in Fig. 6.26. Answer: 12,300 psig at 14,000 ft..

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