4. 5. 6. 8. 9. A submarine can safely resist an external pressure of 1000 psig. How deep in the ocean can it safely dive? Provide solution in feet and assume density of sea water is 64.17 lbm/ft3. Show clearly your handling of units for full credit. Your company is drilling a deep oil well in Texas. Fluids pressure encountered in that well at 15000 ft was 10000 psig. Compute the minimum required density needed to drill safely and prevent a blowout. Express your result in me/gal since these are the required units in the oil field. Show explicitly your handling of units. Compute the hydrostatic pressure (psi) that a drilling mud with relative density equals 1.4 creates at the bottom of a well drilled at 12000 ft? It is generally accepted that the sedimentary rock stress gradient (called overburden or vertical stress) equals 22.5 MPa (Mega Pascals). Compute overburden gradient in Psi/ft. Assuming that geothermal gradient is linear, constant, and equal to 80 F/mile. 3. Construct the plot of geothermal gradient by plotting Temperature (F) versus depth (ft). Show clearly scale and units. Using the value of density of fresh water (1000 Kg/m3) and the equation for hydrostatic pressure P= P g h, a. compute the hydrostatic pressure gradient of fresh water in (Psi/ft). b. Construct the plot of this hydrostatic pressure gradient by plotting pressure (psi) versus depth (ft). Show clearly scale and units