1. The orientation of wide breakout failure will always be in the direction of oH.2. Tensile Failure Cylindrical occurs when: ot <-To3. Total stress = Effective Stress of Rock Grains Pore Pressure.4. When the mud weight is high, then at the wellbore wall o, is large and o is small.5. (ot)e=0 = On - 30H – Pw6. Granular rocks such as sandstones, become stronger the more they are confined.7. With low o of clay, rock strength increases much with increased rock confinement.8. At large distances from the wellbore, o, converge to Oh and ot converge to oH9. In anticline structure the lowest stress magnitude founds at the crest while greater stressesfound along the flanks.10. The orientation of deep knockout failure will always be in the direction of ơh.

Answered: 1. The orientation of wide breakout…

1. The orientation of wide breakout failure will always be in the direction of GH. 2. Tensile Failure Cylindrical occurs when: ot S-To 3. Total stress = Effective Stress of Rock Grains Pore Pressure.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

1. The orientation of wide breakout failure will always be in the direction of oH.
2. Tensile Failure Cylindrical occurs when: ot <-To
3. Total stress = Effective Stress of Rock Grains Pore Pressure.
4. When the mud weight is high, then at the wellbore wall o, is large and o is small.
5. (ot)e=0 = On - 30H – Pw
6. Granular rocks such as sandstones, become stronger the more they are confined.
7. With low o of clay, rock strength increases much with increased rock confinement.
8. At large distances from the wellbore, o, converge to Oh and ot converge to oH
9. In anticline structure the lowest stress magnitude founds at the crest while greater stresses
found along the flanks.
10. The orientation of deep knockout failure will always be in the direction of ơh.

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