دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a petroleum trap that is formed because of deformation (such as folding or faulting) of the reservoir formation. Compare stratigraphic trap.

a combination of a formation structure feature such as a fault with a sealing mechanism that forms a place where oil accumulates or is “trapped”.

the sinking of an oceanic plate edge as a result of collision of a less dense plate.

n: a deep trench formed in the ocean floor along the line of convergence of oceanic crust with other oceanic or continental crust when one plate (always oceanic) dives beneath the other. The plate that descends into the hot mantle is partially melted. Magma rises through fissures in the heavier, unmelted crust above, creating a line of plutons and volcanoes that eventually form an island arc parallel to the trench.

n: congressional act that grants coastal states jurisdiction over a belt of submerged lands that extend seaward off the coastlines to a distance of 3 geographical miles (9 miles for Texas and Florida). Various state agencies are given authority under this act to enforce state environmental provisions for these lands.

formations located below a salt layer.

n: a compound containing the SO4 group, as in calcium sulfate (CaSO4).

n: All kinds of sulphuric acid salts


one of several minerals containing sulfur ions bonded to oxygen atoms.

n: Named as hydrogen brittleness cracking,too.when drill fluid contain hydrogen sulphide,hydrogen can infiltrate in steel products and cause it brittle fracture.

n: An asphaltic mud additive that has been reacted with sulfite to add anionic sulfonate groups to the complex molecular structure. Sulfonate groups make an additive water dispersible, depending on the extent of sulfonation. Such an additive is used to stabi

n: (S) a pale yellow, nonmetallic chemical element. In its elemental state- free sulfur-it has a crystalline or amorphous form. In many gas streams, sulfur may be found as volatile sulfur compounds- hydrogen sulfide, sulfur oxides, mercaptans, carbonyl sulfide. Reduction of their concentration levels is necessary for corrosion control and, in many cases, necessary for health and safety reasons.

n: light crude oil that contains sulfur compounds, often in the form of hydrogen sulfide. a capacity larger than 100,000 deadweight tons but less than 500,000 deadweight tons (45,360 deadweight tonnes) are called very large crude carriers. Those with a capacity over 500,000 deadweight tons are called ultralarge crude carriers.