Presentation on theme: "Petroleum Geology and the Permian Basin"— Presentation transcript:
1Petroleum Geology and the Permian Basin Andrew McCarthyConcho Resources
2Petroleum System Source: organic-rich mudrock Heat (burial) and time Reservoir: porous rockSeal: low-permeability rockTrap
3Source 3,850,000 EJ burial Sol (our sun) Fusion (of hydrogen and helium)burial3,000 EJEarth3,850,000 exajoules per year – Solar radiation3,000 exajoules per year – captured by plant life500 exajoules per year – total human use (fossil, nuclear, etc.)
4+ Source Shale: high organic material Gas (methane, ethane, propane) H2SCO2N2+KerogenHeat and pressureKerogen: geo-plastic or geo-chocolate.Lipids, proteins, carbohydratesTexas tea(light, sweet crude)
5How much heat? Low temps yield nothing: <60 C High temps yield oil: 60C-120+CHigher temps yield gas: 120+C
6100% natural and organic Oil is 100% natural and organic Yummy!Oil is 100% natural and organic95%++ of all oil ever generated has been naturally leaked to the surfaceMillions of natural oil seeps exist around the planet, many under the oceansNaturalOil seeps(BP notInvolved)NotIcedtea
7An oil reservoir at the surface Oil reservoirs are exposed and eroded away. The light oil is biodegraded, tar remains.
8OK. So far we have: Source Heat and time Now we need a reservoir, a seal, and maybe a trap
9Reservoir The first key to a reservoir rock is porosity intergranular fracture
25Reservoirs*Just about everything!carbonatessandsShale/silt
26What does a geologist do? Exploration very little data!Seismic, basin geochem, remote sensingEverything changes with the first wellDevelopment increasing amounts of data!Well logs, core, production dataOperationsDay-to-day drillingWhen do we have “the answer”?