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The term 'gas-reinjection' is also sometimes referred to as repressuring—the term being used only to imply that the pressure inside the well is being increased to aid recovery. Injection or reinjection of carbon dioxide also takes place in order to reduce the emission of CO 2 into the atmosphere, a form of carbon sequestration.
Gas is supplied from two world-class gas fields namely, Gorgon field that contains on average 14% of naturally occurring reservoir CO 2, and Jansz-lo field that contains less than 1% CO 2. [3] Reservoir CO 2 is extracted from natural gas as a part of normal gas-processing operations. During the liquefaction process, natural gas is cooled to ...
Hydraulic fracturing is the propagation of fractures in a rock layer by pressurized fluid. Induced hydraulic fracturing or hydrofracking, commonly known as fracking, is a technique used to release petroleum, natural gas (including shale gas, tight gas and coal seam gas), or other substances for extraction, particularly from unconventional reservoirs. [1]
The depleted reservoir formation should be readily capable of holding sufficient volumes of injected natural gas in the pore space between grains (via high porosity), of storing and delivering natural gas at sufficient economic rates (via high permeability) and be contained so that natural gas cannot migrate into other formations and be lost ...
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Another use of injection wells is in natural gas and petroleum production. Steam, carbon dioxide , water, and other substances can be injected into an oil-producing unit in order to maintain reservoir pressure, heat the oil or lower its viscosity, allowing it to flow to a producing well nearby.
Tracers are used in the oil industry in order to qualitatively or quantitatively gauge how fluid flows through the reservoir, [1] as well as being a useful tool for estimating residual oil saturation.
Two main issues which were discussed at the summit, were natural gas prices and a common approach to the natural gas market. [28] It was agreed on the summit that the price of gas used to generate electricity is too low and the gap between prices for gas and crude oil need to be narrowed. The linking of gas prices to the oil price was considered.