Drilling knowledge and pressure control questions needs answeres

1a) What HIV compensation equipment are needed while drilling an oil well and why? b) Describe what the challanges drilling the 17 1/2" section can be c) While drilling 12 1/4" section the string gets stuck, describe some possible reasons why this could have happend, Which drilling parameters will indicate this? d) When drilling the 8 1/2" section we need the flow speed up annulus to be at least 1.0m/s how big flow rate (liters/min) do we need when we are using 5" drill pipe? e) Describe the BOP system, including all valves, make a sketch of the BOP system which show how the system works, including surface and subsea components. If you are the person to answere those questions, do not hesitate to bid, If you are unable to crack those questions DO NOT bid. Thanks