Answer: In order to confirm drilling at the off coast area, several preliminary surveys are needed to be done, such as-
- Seismic survey is carried out in order to understand about the subsurface structures that are present in that area, that might cause difficulty in drilling.
- Facies analysis are done, in order to make a detailed study. It helps in determining the type of facies present, when the rocks were deposited and what are its lithological characteristics.
- Also it determine the oil and gas prospect at the favorable sites.
So, after completely analyzing this criteria, fulfilling the necessary terms and conditions, the scientists reports these data and subsequently go for drilling.