8/12/2019 4ADworkbook1 Applied Mathematics

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 Assistant Driller ModuleWorkbook 1

Sedco ForexModular Training Program

Ref.: DRLWB.DOC

Section: 4  Page: 1

Issued: 01 May 1999

Revision: 01

Applied Mathematics

Workbook Questions

Refer to Applied Mathematics for the Petroleum and Other Industries. Each question has only onecorrect answer.

1. What is the capacity of a 12 ¼” hole in barrels per foot?

 A. 0.1222 bbl/ftB. 0.1326 bbl/ft 12.25”C. 0.1457 bbl/ftD. 0.1547 bbl/ft

2. What is the annular capacity of a 17 ½” hole with 5” Drill Pipe inside?

 A. 0.2732 bbl/ftB. 0.1968 bbl/ftC. 0.1743 bbl/ftD. 0.0895 bbl/ft 5” 17.5”

3. What is the volume in barrels of a rectangular mud tank with the following dimensions?Width = 6 ½ feet, Length = 18 ¼ feet, Height = 10 feet

 A. 211 bbl 6.5 ftB. 316 bblC. 663 bbl 10 ftD. 1048 bbl

18.25 ft

4. What is the volume of a rectangular mud tank with the following dimensions?Width = 3.5 m, Length = 7.8 m, Height = 4.3 m

 A. 117 m3

3.5 m

B. 738 bblC. answer A or BD. none of the above 4.3 m

7.8 m

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 Assistant Driller ModuleWorkbook 1

Sedco ForexModular Training Program

Ref.: DRLWB.DOC

Section: 4  Page: 2

Issued: 01 May 1999

Revision: 01

Applied Mathematics

Workbook Questions

5. What volume in barrels can the tank hold before fluid passes through the overflow pipe?

 A. 320 bblB. 230 bblC. 110 bblD. none of the above

10 feet

10 feet 7.½ feet

24 feet

6. What is the area of an oval tank cover in square feet, with the following dimensions?Minor Axis = 4 feet, Major axis = 8 ½ feet

 A. 106.8 ft2

8.5 feetB. 75.4 ft

2

C. 49.3 ft2

D. 26.7 ft2

4 feet

7. Using the dimensions in question number 5, calculate the volume in barrels, of an oval tank 27

½ feet high?

 A. 254 barrelsB. 162 barrelsC. 131 barrelsD. 85 barrels

8. What is the volume increase in barrels when raising the mud weight from 9.4 ppg to 10.6 ppg ina 1,400 barrel system?

 A. 256 bblB. 171 bblC. 110 bblD. 76 bbl

8/12/2019 4ADworkbook1 Applied Mathematics

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 Assistant Driller ModuleWorkbook 1

Sedco ForexModular Training Program

Ref.: DRLWB.DOC

Section: 4  Page: 3

Issued: 01 May 1999

Revision: 01

Applied Mathematics

Workbook Questions

9. How much water needs to be added to reduce the mud weight from 10.8 ppg to 9.5 ppg in a1,800 barrel mud system?

 A. 2000 bblB. 1500 bblC. 1000 bblD. 500 bbl

Use the diagram information to answer questions 10 through 14.

10. What is the hydrostatic pressure at TD?

 A. 2,261 psiB. 2,661 psiC. 2,785 psiD. 5,357 psi

11. What is the string capacity in barrels?

 A. 161 bbls

B. 121 bbls 5118 feetC. 101 bbls 5” pipeD. 81 bbls ID 4 “

12. What is the annular volume in litres?

 A. 11,789 litresB. 98,864 litresC. 102,030 litresD. 198,468 litres

13. What is the annular volume in barrels with no string? 239 feet8” drill collar 

 A. 780 bbls ID 2 ½ “B. 745 bblsC. 130 bblsD. 957 bbls

14. What is the height of the influx with a 20 bbl pit gain? 12 ¼ Hole w/ 10 ppg mud

 A. 392 ftB. 239 ftC. 223 ftD. 199 ft