Drilling Engineering Quiz

                           Drilling Engineering Quiz         

            Following are questions from drilling engineering, try to solve have any doubts ask in the comments.

1.       The units of mud cake thickness is measured in_____________________

2.       A diesel engine gives an output torque of 1740 ft-lbf at an engine speed of 1200 rpm, if the fuel consumption rate was 31.5 gal/hr what is the output power and overall efficiency of the engine.

                                 

3.       Determine the total pounds of solids generated in drilling 100 ft of  6-1/8 inch hole. Density of cuttings = 2.20 gm/cc. Porosity = 25%:

4.       Calculate the no of strokes required to spot an LCM of 45 bbl, with a duplex pump of 6.5 in liners, 2.5 rods, 18 in stroke lengths, at a volumetric efficiency of 90%.

5.       Centrifuge efficiency is affected  by the flow rate, by the following operating parameters:

• Bowl speed (rpm).

• Bowl conveyer differential speed (rpm).

• Pool depth.

6.       : Determine the new circulating pressure, psi using the follow-

Present circulating pressure = 1800 psi

Old pump rate = 60spm

New pump rate = 30spm

7.       . A conduit used to pump in to the annulus is called________________, a conduit used to take returns is called__________.

8.       The BOP stack used to attach to a casing by using a __________

9.       A drill string is composed of 9000 ft, of 5 in 19.5 lb.ft drill pipe and 1000 ft of DChaving 3 in ID, calculate no of pump cycles required to pump mud from surface to drill bit, if the pump is a duplex and having 6 in liners, 2.5 rods, 16 in stroke lengths efficiency of 85%.

10.    The Rheological properties of a cement slurry can be determined by _________________

11.   Cement Thickening rate can be determined by ________________

12.    It is desired to mix a slurry of class A cement containing 3% bentonite , using normal mixing water as specified by API determine weight of bentonite and volume of water to be mixed with a 94-lbm sack of cement, also cumpute present of mix, yield and density of the slurry.

13.    What is the function of wiper plugs

a)      Used to separate top and bottom blugs

b)      Used to separate various fluids from one another

c)       Used to prevent well kick

d)      Used to remove the filter cake

14.   what is the function of cement head.

15. What are the causes of stuck pipe? 

16  ) A 12 ppg DF is flowing through drill bit having 13/32’ three nozzles at a rate of 400 gal/min, compute the pressure drop across the bit.

17) For above data cal Impact force

18) A 9 ppg brine having a 1 cp is being circulated in a well at 600 gpm determine the flow of fluid laminar or turbulent if the fluid is flowing through drill pipe of 4.276 ID.

19) Funnel viscosity is noted as_______________

20) What does an ECD indicates?