1Assume that below the surface of the earth there is a connection between all of the ground water, and the water is static (the pressure profile is hydrostatic, you should know what this means in terms of water head). A hole is drilled (which fills with water) to a depth of 2000 m, where oil is found. a) Call the surface of the earth to be z=0 and assume this is the top of the water column. Find the water pressure (Pw) at a depth of 2000m. b) Assume that at the reservoir, the water pressure is equal to the oil pressure (Po). Write down the oil pressure at z=2000 m. c) Now assume that the well bore has its water displaced by the reservoir oil (density = 800 kg/m3), and then it is capped (we now have a column of static oil instead of a column of static water). Find the oil pressure at the top of the well bore (z= 0 m) and compare it to atmospheric pressure. (This is the simplest reason why there are gushers). 2. Relevant equations Ptotal = Patmosphere + Pfluid 3. The attempt at a solution for a) I got Ptotal= 1.01 * 10^5+ 1000*9.8*2000=1.9701*10^7 kpa = pw b) I'm kind of confused here, so does this mean pw=poil so poil is the same answer as above c) I don't have a clue. I'm having a hard time understanding the question. Could somebody please clarify it for me? I'd appreciate your help. Thanks in advance.