Category: Oil and Gas business

Procedure integrates reservoir properties including temperature, pressure, depth, and density to calculate pressure drop in wellbore

Layers of sedimentary rock that form beds

A submersible rig is a mobile drilling platform that is towed to the well site where it is submerged by flooding its lower hull tanks until it rests on the sea floor, with the upper hull above the water surface. After completion of the drilling operation, the rig is refloated by pumping the water out of the lower hull, so that it can be towed to another location. Submersible rigs typically operate in water depths of 12 to 85 feet.

Although hydrocarbons have been discovered, they may remain stranded, namely they cannot be developed for a number of potential reasons, such as due to geopolitical problems, difficulties in transporting the reserves to the market place economically. Indeed, although a discovery has been made it is not always feasible to monetize it

The pressure measured in a well after the well has been closed in for a period of time, often after 24 or 72 hours. When a reservoir is first discovered, the static pressure equals the initial pressure. After production begins, the static pressure approaches the average reservoir pressure

A particular type of floating vessel, usually used as a mobile offshore drilling unit (MODU) that is supported primarily on large pontoon-like structures submerged below the sea-surface. The operating decks are elevated 100 or more feet [30 m] above the pontoons on large steel columns. Once on the desired location, this type of structure is slowly flooded until it rests on the seafloor. After the well is completed, the water is pumped out of the buoyancy tanks the vessel refloated and towed to the next location. Submersibles, as they are known informally, operate in relatively shallow water, since they must actually rest on the seafloor

A force acting upon or within a mass or rock, expressed in terms of unit weight per surface area such as tons per square inch. Stress is any force which acts to deform rocks: (1) Compression – a stress that acts to press or squeeze rocks together. (2) Tension – a stress that acts to stretch a rock, or pull a rock apart. (3) Shear – a stress which acts tangential to a plane through a body, causing two contiguous parts to slide past each other