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CHAPTER 02 RESERVOIR
INTRODUCTION
CONDITION FOR AN ACCUMULATION OF OIL AND GAS
° A mature source rock ° A reservoir rock
° A migration route (betw. Source & Res.) ° An impermeable seal
° A trap
RESERVOIR
° A single continuous deposit of gas and/or oil in the pores of a reservoir rock. A reservoir has a single pressure system and don’t communicate with other reservoirs.
° The portion of the trap that contains petroleum, including the reservoir rock, pores, and fluids.
° A pond, lake or environment that is used store liquids.
Exp: RESERVOIR OF CUU LONG AND SOUTHERN CONSON BASINS
Figure 1
RESERVOIR (cont.)
° There are two fundamental physical properties that a good reservoir must have:
+ Porosity or sufficient void space contain significant petroleum.
+ Permeability, the ability of petroleum to flow into, or out of these voids.
° The only common rock type that have favorable combination of porosity and permeability to be reservoirs are sandstones and carbonates.
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