• Drilling

    Offshore Drilling Rigs

    The sequence of operations is as follows when a land well is drilled: –  Prepare location before rig arrives. – Dig cellar. – Install conductor pipe. – Prepare support pad for rig, camp, etc – Build roads, fencing, dig pits. – Sometimes drill water well. – Move rig on to location, rig up and prepare to start drilling. Offshore Drilling Rigs:      Two main types: floating and bottom-supported unit.    Floating unit include: semi submersible (bottle-type, column stabilized), barge rig and drill ship.    Bottom-supported unit include: submersible (posted barges, bottle-type submersibles, arctic submersibles), jackups and platforms. (1). Semi Submersible      This floating drilling unit has columns when flooded with…