0
An oil and gas reservoir is a subsurface geological formation that contains significant accumulations of hydrocarbons, primarily oil and natural gas. These reservoirs are typically found in porous rock layers, where the hydrocarbons can be trapped by impermeable rock formations above, creating a seal. The efficiency of extraction from a reservoir depends on factors like its size, pressure, and the properties of the surrounding rock. Understanding these characteristics is crucial for successful exploration and production in the oil and gas industry.
What else can I help you with?
What the meaning about reservoir gas cap?
A reservoir gas cap refers to the layer of gas that accumulates above the liquid oil in an oil reservoir. This gas, often under pressure, can help drive the oil to the surface during extraction. The presence of a gas cap can enhance the efficiency of oil recovery by providing additional pressure and reducing the viscosity of the oil. Understanding the characteristics of the gas cap is crucial for effective reservoir management and production strategies.
What is reservoir drive mechanism?
A reservoir drive mechanism is that mechanism in which oil is derived by water or gas or both water and gas drive the oil from the well. Is called reservoir drive mechanism.
What is the definition of oil rim?
In petroleum engineering, an oil rim field is an oil field with a relatively thin oil zone below a gas cap. At the edges of the reservoir there will ususally be an area where the top of the reservoir is below the gas/oil contact, thus forming a "rim" containing only oil, with no overlying gas.
What is oil leg reservoir?
Thin oil zone below a gas cap
What is mechanical drive?
A reservoir drive mechanism is that mechanism in which oil is derived by water or gas or both water and gas drive the oil from the well. Is called reservoir drive mechanism.
Which substance is generally encountered first when an oil and gas reservoir is drilled?
natural gas
9- If a homogeneous reservoir contains a gas cap at initial condition the fluid at the gas-oil contact should be?
Oil
When an oil and gas reservoir is drilled which substance is generally encountered?
When an oil and gas reservoir is drilled, typically hydrocarbons such as crude oil and natural gas are encountered. These hydrocarbons are trapped within the reservoir rock, and drilling allows for their extraction to the surface for processing and use.
What is gas oil ratio?
Gas oil ratio (GOR) is a measurement used in the oil and gas industry to express the relationship between the volume of gas and the volume of oil produced from a reservoir. It is typically calculated in standard cubic feet of gas per barrel of oil (scf/bbl). A higher GOR indicates a greater amount of gas relative to oil, which can influence production strategies and economic viability. Understanding GOR is crucial for reservoir management and optimizing extraction processes.
Do you mix oil into the gas for a 1979 Yamaha qt50 50cc moped?
In most cases you should not mix oil into the gas of your 1979 Yamaha 50 cc moped. This type of moped had its own oil reservoir. If it is not marked on the gas You do not need to oil with the gas.
At the top of an oil reservoir is a layer of?
sedimentary rocks that act as a cap, preventing the oil from escaping upwards.
What is oil reservoir drive mechanisme?
The process in which reservoir fluids are caused to flow out of the reservoir rock and into a wellbore by natural energy gas drives depend on the fact that, as the reservoir is produced, pressure is reduced, allowing the gas to expand and provide the driving energy. Water-drive reservoirs depend on water pressure to force the hydrocarbons out of the reservoir and into the wellbore.The primary reservoir drive mechanisms are:· Gas drive which includes both solution gas drive as well as gas cap drive· Water drive· Gravity drainage· Combination driveProducing oil and gas needs energy. Usually some of this required energy is supplied by nature. The hydrocarbon fluids are under pressure because of their depth. The gas and water in petroleum reservoirs under pressure are the two main sources that help move the oil to the well bore and sometimes up to the surface. Depending on the original characteristics of hydrocarbon reservoirs, the type of driving energy is different.Solution Gas Drive Reservoirs When a newly discovered reservoir is below the bubble point pressure; there will be free gas as bubbles within the oil phase in reservoir. The reservoir pressure decreases as production goes on and this causes emerging and expansion of gas bubbles creating extra energy in the reservoir. These kinds of reservoirs are called as solution gas drive reservoirs. Crude oil under high pressure may contain large amounts of dissolved gas. When the reservoir pressure is reduced as fluids are withdrawn, gas comes out of the solution and displaces oil from the reservoir to the producing wells. The efficiency of solution gas drive depends on the amount of gas in solution, the rock and fluid properties and the geological structure of the reservoir.Water Drive Reservoirs Most oil or gas reservoirs have water aquifers. When this water aquifer is an active one, continuously fed by incoming water, then this bottom water will expand as pressure of the oil/gas zone is reduced because of production causing an extra driving energy. This kind of reservoir is called water drive reservoirs. The expanding water also moves and displaces oil or gas in an upward direction from lower parts of the reservoir, so the pore spaces vacated by oil or gas produced are filled by water. The oil and gas are progressively pushed towards the well bore.Gravity drainage may be a primary producing mechanism in thick reservoirs that have a good vertical communication or in steeply dipping reservoirs. Gravity drainage is a slow process because gas must migrate up structure or to the top of the formation to fill the space formerly occupied by oil. Gas migration is fast relative to oil drainage so those oil rates are controlled by the rate of oil drainage.
