Category: Oil and Gas business

Discovery of petroleum after drilling

A heavy tubular connector between drillpipe and a bit

The angle that a planar geologic surface (for example, a fault) is inclined from the horizontal. The angle of inclination of a geologic layer or sedimentary bed.

A portable, one-room shelter at a well site for the convenience and protection of the drilling crew and others. The doghouse serves as lunch room, change house, dormitory, and for keeping small supplies and records

Dirty cargoes comprise crude oil or heavy, viscous petroleum products (heavy fuel oil, for example, which coats the sides of the cargo tanks). Those petroleum products which leave significant amounts of residue in tanks. Generally applies to crude oil and residual fuel oil. Vessels carrying dirty cargoes may be referred to as dirty vessels

Refining and marketing sector of the oil industry and transmission and marketing in the natural gas industry, including the transmission and distribution lines

Most, if not all, oil and gas producers have to account for the estimated future cost of dismantling and removing oil and gas production and related facilities and equipment and restoring land to its previous condition. Estimated future dismantlement, removal, and restoration costs have characteristics that distinguish them from other costs associated with the acquisition and use of productive assets. The first difference is that the cash outlays associated with these costs typically occur after the asset has ceased production. Second, the timing of the future cash outlays is uncertain, since it depends on when the oil and gas reserves are exhausted. Finally, changes in field investment, fluctuations in prices, innovations in technology, and enactment of new legislation can make estimation of these costs even more speculative. The costs are accumulated over the estimated lives of the facilities by the use of the unit per production method.

Cuttings from the drilling that are extracted together with the drilling fluid

inclined fractures where the blocks have mostly shifted vertically

Named for the French mineralogist Deodat de Dolomieu, is a common sedimentary rock-forming mineral that can be found in massive beds several hundred feet thick. They are found all over the world and are quite common in sedimentary rock sequences