Drilling Rigs : Offshore Drilling

5013 Words Jun 5th, 2015 21 Pages
An offshore drilling rig is a machine that creates holes (usually called wells or boreholes) and/or shafts in the ground. Drilling rigs can be huge structures that house equipment which is then used to drill water wells, oil wells, or natural gas wells.
The term “rig” refers to the complexity of the equipment that is used to penetrate deep into the surface of the earth’s hard crust.

Offshore drilling is a mechanical process where a wellbore is drilled through the seabed. Typically carried out in order to explore and extract petroleum which lies in rock formations beneath the seabed. The term is used to describe drilling activities on the continental shelf, the term can also be applied to drilling in lakes, inshore waters and inland seas.

Offshore drilling presents environmental challenges, both from the produced hydrocarbons and the materials used during the drilling operation.

There are many different types of facilities from which offshore drilling operations take place. These include bottom founded drilling rigs (jackup barges and swamp barges), combined drilling and production facilities either bottom founded or floating platforms, and deepwater mobile offshore drilling units (MODU) including semi-submersibles and drillships (What is Offshore drilling and drilling rigs, 2013).

The offshore drilling concept is basically to drill a hole in the ground and to then stabilize the walls of the hole from collapsing into the hole/pit. The drill is primarily made using…

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