Drilling the Well
Oil and natural gas deposits are found throughout the world in underground formations. Conventional formations usually consist of sandstone or carbonate rocks while unconventional formations frequently contain coal and shale. Gaining access to these deposits involves drilling vertical, horizontal or multilateral wells to the target formation. Then various completion techniques, such as hydraulic fracturing, are used to create an effective connection between the well and the targeted hydrocarbon-containing formation, thereby providing a pathway for the oil or gas to enter the wellbore and move up to the surface.