IWCF Principles & Procedures Test Paper (Answer)

7/30/2019 IWCF Principles & Procedures Test Paper (Answer)

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PRINCIPLES & PROCEDURES TEST PAPER ANSWERS

17) 372FT.

240PSI Overbalance .6448psi/ft mud gradient = 372.208ft.

18) (1) Increase in R.O.P. (Drilling Break)

(2) Connection Gaz

(3) Increase in Torque and Drag

(4) Increase in Flow line temperature.

19) E

20) B (Tripping in)

21) A & C

22) D & E

23) 1ppg (468 9000) 0.052

24) A & C

25) 32bbls

(.6448psi/ft -.12psi/ft) = .5248psi/ft

240psi + .5248psi/ft = 457.317ft.

457.317ft. x .0702bbls/ft OH capacity = 32.1036bbls

26) = 12.8 ppg

7987psi + 12,000ft + .052 = 12.7996 ppg Fonnula no. 5

27) (1) Minimize pressures on the well bore and BOP equipment(2) Allow for smooth operation of the Remote Choke(3) Disperse of the Kick fluids at a controlled rate(4) Allow time for the Mud to be weighted up

PRINCIPLES & PROCEDURES TEST PAPER


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28) (1) At the start of each shift(2) Any time the Mud weight is changed(3) After Bit and Nozzle changes(4) After changes to the mud pumps

29) B

30) B

31) C

32) B

33) C

34) (a) 4900 psi (10.3 x 6200 ft x .052) + 1580 psi = 4900.72 psi(b) 15.2 ppg 4900.72 + .052 + 6200' = 15.2007 ppg Fonnula no. 17(c) 902 psi (15.2 -12.4) x .052 x 6200' = 902.72 psi Fonnula no. 18

35) B

36) C

37) True

38) D

39) C

40) B 148psi Formula No. 26

[ (.6448 x .0744) x 420ft. ] (.0744 + .0622) = 147.318psi

41) 3.87bbls

(P1 x V1) P2 = V2

( )[ ]( )

bblsppgxftx

bblsxppgxx 8709.3052.4.126200

2052.4.12'000,12=



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42) A

43) Soft = A, G, E, D, C

Hard = B, G, D, E

44) D

45) E

46) C

47) A

48) B

49) B

50) 13.2ppg Formula No. 10

[ (500 .052 12,000) + 12.4ppg ] = 13.2012ppg

51) A = 114psi/ft Gas Formula No. 13

11bbls 0292bbls/ft = 376.712 Height of influx

6448psi/ft [(700SICP 500 SIDPP) 376.712] = 1138psi

52) (a) 349 feet225psi 6448psi/ft = 348.94 feet

53) 3 bbls Formula No. 27

225psi x 11bbls 8238psi = 3004bbls

54) (a) 900psi

500 SIDPP + 400 PSCR = 900psi

(b) 426psi

400psi x (13.2ppg 12.4ppg) = 425.806psi



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55) (a) Surface to bit strokes = 2010 strokes

(b) Bit to shoe stokes = 2470 strokes

(c) Time from bit to surface = 178.6 mins or 2hr 58min 36sec

(d) Volume from shoe to surface = 295bbls

(e) psi/stroke reduction = 2358psi/storke

(f) MAASP with kill mud = 644.8psi

56) 664psi

[(900 426) 2010stks] = 2358psi / reduction per stroke

1000 strokes x 2358 = 235.82psi reduction

900 235.82 = 664.18psi circulating pressure

57) 812psi

Well effects = 500psi _________________ 0 psi Kill mud at BitPump effects = 400psi __________________ 426psi Kill Mud at Bit

Well effects at 1005stks = 250psi Pump effects at 1005stks = 413psi

413 x (35 30) 2 = 562.1388psi pump pressure

562.1388psi + 250psi = 812.1388psi circulating pressure at 35spm.

58) A

2010 strokes to the bit, DP pressure should be FCP @ 426psi

600 426 = 174psi overbalance

59) B (Should be decreasing)Pressure above the Gas-Kick must reduce otherwise there cannot be any

expansion.



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60) B (Decreasing)

Less mud going into the Hole, pressures will reduce, reducing BHP

61) B (Staying the same)

More strokes to give same Volume, BHP will be restored

62) 644 psi Formula No. 18

(15.2 13.2) x 052 x 6200 = 644.8psi


IWCF Principles & Procedures Test Paper (Answer)

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