Give an estimate for formation pressure in an offshore frontier area at 12000 ft

Question

Give an estimate for formation pressure in an offshore frontier area at 12000 ft below sea level where the water depth is 4000 ft? a. 12000 psi b. 9732 psi c. 5196 psi d. None of the above What is done when a kick occurs during drilling? a. Rate of penetration is increased to progress rapidly beyond abnormal pressure b. Drilling is stopped and mud pit volume is monitored c. The well is killed by activating the blowout preventer d. none of the above What is the possible effect of a kick on drill string weight? a. Measured drill string weight will decrease b. Measured drill string weight will increase due to reduced density and buoyancy of drilling mud c. Measured drill string weight will not change d. none of the above For a well that is shut-in after a kick which of the following statements is true? a. Casing and drill pipe pressure are always equal b. Drill pipe hydrostatic pressure is less than formation pressure by an amount P_ c. Casing shut-in pressure (P_) is not influenced by fluids in the annulus d. none of the above Calculate the kill mud weight for a well shut-in because of a kick if the bit depth is 12000 ft, the shut-in drill pipe pressure is 350 psi, and the original mud density is 13 lbs/gallon? a. 12.44 lbs/gal b. 13.56 lbs/gal c. Not enough information given to determine kill mud weight d. none of the above How is the kill mud introduced into the shut-in well after a kick? a. Through the kill wing valve on a production tree b. Through a kill line and one way valve in the BOP c. Either a or b d. none of the above Which of the following is a function of drilling mud? a. Control formation pressure b. Cooling of drill bit c. Transport formation cuttings to the surface d. All of the above

Explanation / Answer

Answer(16)- The correct option is (c).

Hence, when a kick is takes place during drilling the well is killed by activating the blowout preventer.

Answer(21)- The correct option is (d).

Hence, the drilling mud performs essential functions during well construction such as transport formation cutting to the surface, preventing well-control issues and wellbore stability, minimizing formation damage, cooling and lubricating the drillstring.

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