In offshore Oil platform drilling underneath the seabed, they are different types of oil rig are a compliant tower, Semi-submersible platform, Jack-up drilling rigs, Drillships Floating production systems, Tension-leg platform, Gravity-based structure, Spar platforms these are the major oil rig types in an Offshore platform in the oil industry. onshore drilling refers to drilling deep holes under the earth’s surface these are the drilling method in order to extract the natural gas and oil. Offshore drilling is also classified by bottom-supported units and floating units. These sessions elaborate the types of the offshore oil platform and onshore oil exploration