Engineering Petroleum question * pressure is 2776 psi. 17. Three exploration wells have been drilled into a newly discov- ered oil reservoir. Well B is 1400 ft from Well A. Well C is 2200 ft from Well A, and Well C is 3000 ft from Well B. 1400 ft 2200 ft 3000 ft B Well A is an observation well (it has a pressure gauge in the hole to measure the pressure response due to production from wells B and C, but is not itself used for production). Well C begins producing at 200 STB/D at time r=0. Well B begins producing at 100 STB/D 48 hours later. Reservoir data: 14= 0.27 cp c1.8x 10-5 psi- 1.23 RB/STB B, Pi= 2727 psi k = 42 md 9=22% h= 7.5 ft Well data: Well A Well B Well C Rate, q observation well 200 STB/D 200 STB/D Radius, w 0.33 ft 0.25 ft 0.375 ft Skin factor, s 5.0 7.5 -1.5 a) Calculate the pressure drop at Well A due to production from Well B at time r=144 hrs. b) Calculate the pressure drop at Well A due to production from Well C at time=144 hrs. c) Calculate the pressure drop at Well A due to its own skin factor at timer 144 hrs. d) Calculate the pressure at Well A at time t=144 hrs