EAS201 Lecture Notes - Lecture 25: Steam-Assisted Gravity Drainage, Shale Oil Extraction, Directional Drilling
20 Sep 2016
School
Department
Course
Professor
Document Summary
Conventional petroleum: flows without aid or can be pumped, and it includes crude oil and natural gas. Unconventional petroleum: it does not flow under its own volition but needs eor. Methods of extractions like injection of steam & others. Eg. ) oil shales, shale gas, tar-oil sands, coal based liquids & gasses (coal bed methane) Almost all depositional environments are important for petroleum geology. [posted] origin of oil & gas: thermal maturation. Bacteria floating in the water & organic matter in depositional environments that gets depositied with mineral water: (1) (2) (3) particulates colloidal. Deposits: o. m + mineral matter (later form source rocks) Since the oil & gas are less dence (have lower specific gravities) than the rocks around, it"s buoyant, so it migrates through the rocks until a non- pourous cap rock traps it into a trap. Drilling & related geohazards: (nowadays, horizontal drilling is possible)
