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What impermeable rock that occurs at the top of an oil reservoir?
Wiki User
∙ 10y ago
well according to my research impermeable rock that occurs at the top of an oil reservoir is called cap rock
Wiki User
∙ 10y ago
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What is the best reservoir rock?
Porous sandstone is a good reservoir rock for its porosity enables it to store the fluid (oil?) and also to allow easy release. Compare with oil shale, where the rock is very fine grained and will not release the fluid easily. Both would ideally be capped with an impermeable cap rock to constrain the oil.
At the top of an oil reservoir is a layer of?
oil, gas, rock, water
How are natural gas and petroleum removed from earths crust?
Via sealed boreholes drilled into the reservoir - permable rocks trapped below an inpervious, impermeable cap rock. Once the gas pressure in the reservoir falls too far for it to push the crude oil to the surface, water in pumped down a parallel well to displace the remaining iol up through the production well.One point - the oil is not in the crust. It is in sedimentary rock covering the crust.
Which characteristic is absolutely necessary for a sedimentary rock to have potential as a possible reservoir rock for oil or gas?
High Porosity in order for the gases and oils to penetrate but must have a cap rock to contain the floating gases and oils
Why is petroleum found underground?
Oil is found underground because organic material within sedimentary rocks need to be heated by the earth's internal heat. This means the rock has to be "cooked" before oil is produced. Once the oil is produced, it is lighter than the water that will also be in porosity within the rocks. This causes oil to rise until it encounters an impermeable barrier. This is called the reservoir. Without something to hold in the oil, it would come to the surface much like it does in the La Brea tar pits and there would not be enough to sustain the worlds needs.
What impermeable rock occurs at the top of an oil reservoir?
well according to my research impermeable rock that occurs at the top of an oil reservoir is called cap rock
What is the best reservoir rock?
Porous sandstone is a good reservoir rock for its porosity enables it to store the fluid (oil?) and also to allow easy release. Compare with oil shale, where the rock is very fine grained and will not release the fluid easily. Both would ideally be capped with an impermeable cap rock to constrain the oil.
Describe an oil and natural gas reservoir that might be found beneath an impermeable rock layer?
the generator spins and the turbine help i keep the steam
What is the impermeable rock mass that lies above oil-bearing strata called?
Tor is the impermeable rock mass that is above oil-bearing strata. Tor is created by groundwater weathering or spheroidal weathering.
What is the difference between primary and secondary migration of hydrocarbon?
There are two types of migration when discussing the movement of petroleum, primary and secondary. Primary migration refers to the movement of hydrocarbons from source rock into reservoir rock and it is this type that the following discussion refers to. Secondary migration refers to the subsequent movement of hydrocarbons within reservoir rock; the oil and gas has left the source rock and has entered the reservoir rock. This occurs when petroleum is clearly identifiable as crude oil and gas although the gas may be dissolved in the oil. Buoyancy of the hydrocarbons occurs because of differences in densities of respective fluids and in response to differential pressures in reservoir rock.
At the top of an oil reservoir is a layer of?
oil, gas, rock, water
How are natural gas and petroleum removed from earths crust?
Via sealed boreholes drilled into the reservoir - permable rocks trapped below an inpervious, impermeable cap rock. Once the gas pressure in the reservoir falls too far for it to push the crude oil to the surface, water in pumped down a parallel well to displace the remaining iol up through the production well.One point - the oil is not in the crust. It is in sedimentary rock covering the crust.
What is good permeability in oil reservoir rock?
100 to 1000 mD
What is the definition of Displacement efficiency in petroleum Engineering for oil reservoir?
The displacement efficiency refers to the fraction of the oil in place that is swept from a unit volume of the reservoir. Displacement efficiency is a function of fluid viscosities and the relative permeability characteristics of the reservoir rock (mobility ratio), of the “wettability” of the rock, and of pore geometry.
What is the difference between water injection and water flooding?
I do not think that there is any difference. Petroleum engineers normally inject water into an oil reservoir to maintain the reservoir pressure (and hence the ability of the reservoir to pump oil to the surface). In the process and if the water injection wells are properly located, the injected water normally sweeps (pushes out) out more oil effectively flooding the reservoir and increasing the amount of oil that is recovered from the reservoir. This incremental oil will otherwise be left behind in the reservoir. Hence, in an oil reservoir where the natural aquifer is large and strong enough to maintain the reservoir pressure, water injection is unlikely to significantly increase the oil recovery from the reservoir.
Which characteristic is absolutely necessary for a sedimentary rock to have potential as a possible reservoir rock for oil or gas?
High Porosity in order for the gases and oils to penetrate but must have a cap rock to contain the floating gases and oils
How does oil get transported from its site of origin to where it is used?
Oil Formation takes about 4 to 5 million years. Its place of formation is much different to the place where oil reserves are found. The place where oil is formed is under very high pressure and different types of forces apart from pressure act on it (gravitational force, pressure gradients etc). This causes the oil to migrate through porous rocks. This migration continues till this oil is trapped by an impermeable and non porous hard rock cap. The oil then settles there in the form of a pool with water in the lowest layer topped by oil and on top lies the gas. This is the reservoir from where we can extract out oil.
