What is a gas condensate reservoir?
A gas-condensate reservoir (also called a dew point reservoir) is a reservoir in which condensation causes a liquid to leave the gas phase. The condensed liquid remains immobile at low concentrations.
What are condensates composed of?
Typically, condensates are composed mainly of alkanes (saturated hydrocarbons, such as butane, pentane and hexane) and are low in Polycyclic Aromatic Hydrocarbons (PAH) which are typically found in crude oils. Condensates have a very low solubility in water and are highly volatile.
What are NGL products?
Natural gas liquids (NGLs) are hydrocarbons—in the same family of molecules as natural gas and crude oil, composed exclusively of carbon and hydrogen. Ethane, propane, butane, isobutane, and pentane are all NGLs (see table above). There are many uses for NGLs, spanning nearly all sectors of the economy.
How do you calculate Gor?
A method as claimed in claim 1, characterized in that said volume ratio (GOR) is determined by the relation: GOR = R TOC 100 · k · ρ r ρ o where: ρo is the density of the liquid hydrocarbon at the surface (generally estimated at 0.8), ρr is the estimated rock density, R is the measured ratio of the volume of gas …
Is naphtha and condensate the same?
Condensate is mostly composed of NGLs and naphtha range material, and has an API from 45 to 70+. Once separated from natural gas, condensate is generally treated like a crude oil. It can be blended with other heavier crude streams or sent to market directly by pipeline or tanker.
What is the difference between LPG and NGL?
LPG is isolated from the hydrocarbon mixtures by its separation from natural gas or by the refining of crude oil. Natural gas liquids (NGL) range from 1% to 10% of the natural gas flow. Similarly, LPG produced from crude oil refining constitutes between 1% and 4% of the crude oil processed.
What are the units of Gor?
The GOR is a dimensionless ratio (volume per volume) in metric units, but in field units, it is usually measured in cubic feet of gas per barrel of oil or condensate. In the states of Texas and Pennsylvania, the statutory definition of a gas well is one where the GOR is greater than 100,000 ft3/bbl or 100 Kcf/bbl.
What is Gor scf bbl?
The proportion between oil and natural gas obtained from a producing well under given conditions of temperature and pressure. Commonly abbreviated GOR and measured in standard cubic feet of gas per barrel of oil (SCF/BBl).
What is the API of condensate?
What is the composition of naphtha?
Naphtha contains varying amounts of paraffins, olefins, naphthene constituents, and aromatics and olefins in different proportions, in addition to potential isomers of paraffin that exist in naphtha boiling range.
Is condensate and NGL the same?
Natural gas liquids (NGL) and condensate can generally be used interchangeably. NGLs and condensates both comprise a mixed stream of hydrocarbons representing light hydrocarbons, such as ethane, and heavier hydrocarbons, such as pentane.
What are gas condensate reservoirs?
Gas condensate reservoirs are gas systems that reside in reservoirs with the original temperatures lying between the critical temperature, T C, and the cricondentherm (T max in Figure 2.11 ). If the original reservoir pressure is greater than the dew-point pressure, then a single-phase gas system will occur in the reservoir as in Figure 2.15.
What is gas condensate made of?
Gas condensate (sometimes referred to as condensate) is a mixture of low-boiling hydrocarbon liquids obtained by condensation of the vapors of these hydrocarbon constituents either in the well or as the gas stream emits from the well.
What is the relationship between reservoir temperature and condensable hydrocarbons?
The amount of potentially condensable hydrocarbons in the reservoir increases with the richness of the gas, as heavy compounds shift the critical temperature towards the reservoir temperature. Whereas a gas with a cricondentherm near the reservoir temperature will behave very much like a wet gas.
How are recoverable reserves of natural gas and condensate oil determined?
Finally, the recoverable reserves of natural gas and condensate oil are determined under the constraint of the abandonment pressure. Naphtha fractions (including gas condensate and natural gasoline) grades are often referred to by a boiling range, which is the defined temperature range in which the fraction distils.