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Question: 1 a a well is drilled in a tectonically active...

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1. a) A well is drilled in a tectonically active area that is NOT known to have any erosional processes occurring in the vertical sequence drilled. The well encountered a repeat section of a zone that is considered to be a regional marker (virtually always observed). The upper of the two zones does not appear to exhibit any fracturing. What is the most likely explanation for this repetition and what is the most likely description of the tectonic regime?
b) Briefly sketch this configuration.

2. a) A well is drilled in a tectonically active area that is NOT known to have any erosional processes occurring in the vertical sequence drilled. The well did not encounter a zone that is considered to be a regional marker (virtually always observed). What is the most likely explanation for this absence and what is the most likely description of the tectonic regime?
b) Briefly sketch this configuration.

3. a) A well is drilled in a tectonically active area that is NOT known to have any erosional processes occurring in the vertical sequence drilled. The well encountered a repeat section of several zones that are considered to be a regional markers (virtually always observed). The upper repeat section appears to exhibit significant fracturing.The lower repeat section does not have any fracturing. What is the most likely explanation for this repetition and what is the most likely description of the tectonic regime?
b) Briefly sketch this configuration.

4. What is the hydrocarbon trapping mechanism of drape? Draw a vertical cross section example of drape for the case of clastics (shales and porous / permeable sandstones). To create drape, what is the process that is dominant in the shales and reduced in the sandstones?. Drape introduces what major hydrocarbon trapping factor into the reservoir?

5. Describe the process of how Salt Diapirs and Salt Domes are initiated, develop and describe the two main hydrocarbon traps that can result from salt movement in the subsurface.

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