Q2\ Answer T for true statements or F for false ones and correct false ones: 1. Strength of rock decreases with increasing confining pressure. 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 or is large and o is small. 5. (o.)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, cony 9. It is safer to drill parallel to the maximum horizontal stress when drilling a horizontal well iconverge to GH in a relaxed basin. 10. It is safer to drill parallel to the minimum horizontal stress when drilling a horizontal well in a tectonically stressed basin.
Q2\ Answer T for true statements or F for false ones and correct false ones: 1. Strength of rock decreases with increasing confining pressure. 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 or is large and o is small. 5. (o.)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, cony 9. It is safer to drill parallel to the maximum horizontal stress when drilling a horizontal well iconverge to GH in a relaxed basin. 10. It is safer to drill parallel to the minimum horizontal stress when drilling a horizontal well in a tectonically stressed basin.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Q2\ Answer T for true statements or F for false ones and correct false ones:
1. Strength of rock decreases with increasing confining pressure.
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 ot is small.
5. (0.)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, conv
9. It is safer to drill parallel to the maximum horizontal stress when drilling a horizontal well
in a relaxed basin.
i converge to oH
10. It is safer to drill parallel to the minimum horizontal stress when drilling a horizontal
well in a tectonically stressed basin.
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