دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a non operating interest in oil and gas from one or more leases that provides its owner a fractional share of the oil and gas produced, free of the costs of production, and that terminates when a specified dollar amount or volume of production has been realised. Oil payments may be created and reserved when a lease or royalty interest is assigned. or they may be carved out of a leasehold or royalty interest and assigned to another party.

n: (OPA) a congressional act passed to reduce the risk and damages caused by large oil spills on navigable waters. OPA provides for increased federal response authority, increased civil penalties, emphasis on worstcase contingency planning, and a billiondollar trust fund to help clean up severe spills. The objective of OPA is to prevent discharges of oil into federal waters from vessels and facilities and to ensure that, if such spills occur, owners and operators have the resources to clean them up.

n: the degree to which a formation is saturated by oil, expressed as a percentage of pore volume.

n: a pool of money set up under OPA to provide for increased federal response to oil spills. A $1 billion oil spill cleanup fund (created with an existing $.05/barrel fee on oil) was established under OPA. Half of the fund can be used for a single spill, and spill victims can use the fund when a spillers liability limit has been reached, when the spiller is unknown, or when settlement is delayed.

n: see oil-bath air cleaner. oil-bath reservoir n: in rotary table assemblies, a compartment in the base of the rotary table assembly that contains oil of a specified weight and viscosity and through which parts of the assembly move to be lubricated.

n: the plane (typically a zone several feet thick) at which the bot- tom of an oil sand contacts the top of a water sand in a reservoir, i.e., the oil-water interface.

local boundary between the oil and the bottom water. OW Contact may vary in the field depending on individual drawdowns and local variations in vertical permeability.

n: the boundary between the oil on top and the water below when both are contained in the same vessel.

n: (OBQ) the measurable or estimatable materialsincluding water, oil, slops, oily residue, oil/ water emulsion, sludge, and sedimentremaining on board in vessel cargo tanks and pipe lines prior to loading.

n: a tool used to open or close a downhole valve;a tool used to set or release a downhole tool, such as a retrievable bridge plug.