دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n pi: 1. the liquids and the residue that collect in the bottom of a vessel (such as tank bottoms) or that remain in the bottom of a storage tank after a period of service.2. the residual fractions remaining at the bottom of a fractionating tower after lighter components have been distilled off as vapours.

n: a complete trip from the bottom of the wellbore to the top.

n: The process that the drilling fluid returns to the well head from the bottom hole.

circulating the bottom hole fluid to the top of the well.

n: the time required for mud to travel up the borehole from the bit to the surface.

n: the part of a marine delta that lies farthest from shore. It consists of silt and clay extending well out from the toe of the steep delta face. Such beds grow slowly, out of reach of most of the effects of river current and wave action.

n: Stop drilling before pulling out of hole and continue circulating to carry cuttings to the surface. Be convenient for observing rock specimen and geologic analysis.

bottoms.

n: a unit of equipment for separating butane, with or without lighter components, from a mixture of hydrocarbons and leaving a bottoms product that is essentially butane free.

n: a unit of equipment for separating propane, with or without lighter components. from a mixture of hydrocarbons and leaving a bottoms product that is essentially propane-free.

n pi: (marine) a system of piping in tank bottoms in which steam is carried as required to heat high pour-point liquid cargoes to pumpable viscosity level. heating medium n: a material, whether flowing or static, used to transport heat from a primary source such as combustion of fuel to another material. Heating oil and steam are examples of heating mediums. Also called heat medium.

n: a mobile bottomsupported offshore drilling structure with columnar or open-truss legs that support the deck and hull. When positioned over the drilling site. the bottoms of the legs rest on the seafloor. A jackup rig is towed or propelled to a location with its legs up. Once the legs are firmly positioned on the bottom, the deck and hull height are adjusted and leveled. Also called self-elevating drilling unit.