1. What are the definitions of porosity and permeability? If the pore volume is 4.6 cc and bulk volume is 20 cc for a core sample, what is the porosity?
2. What is the definition of saturation of a fluid? There are three phases in a reservoir: oil, gas, and water. Assuming that all pores are occupied by fluids and the volume for each phase is as follows:
Water: 200,000 bbl
Oil: 650,000 bbl
Gas: 150,000 bbl
What are the saturations for oil, gas, and water?
3. Define 2D, 3D, and 4D seismic.