Difference Between Conventional and UnConventional Reservoir?

 

Differences between conventional and unconventional Reservoir:

Reservoirs are utilities that exist in the hydrocarbon exploration and production industry; they are underground storage facilities for oil and or natural gas. But not all reservoirs are the same. They differ in respect to the geological setting, methods of extraction, and economic prospectiveness. It is obvious that knowledge of the differences between conventional and unconventional types of reservoirs is essential for increasing the chances of exploration and improving the production of hydrocarbons.

Conventional Reservoirs

Conventional reservoirs refer to fields with aspects of geological makeup and permeability of the rocks whereby hydrocarbons are free to move through connected openings in the reservoir rocks. These reservoirs predominantly involve porous sandstone or limestone traps, basined by impermeable layers of shale or mudstone in which the hydrocarbon is statutorily confined from further migration upwards.

Key features of conventional reservoirs include: Key features of conventional reservoirs include:

High Permeability: 

Traditional reservoirs have high permeability and thus, the movement of oil and gas through the rock formation is easy. This enables efficient production with the use of standard methods such as drilling and extraction.

Natural Pressure Drive: 

In many conventional reservoirs, factors like the natural overpressure drive, as wells as the gas or water, help move the hydrocarbons towards a production well that boosts the recovery factor besides improving the performance of the reservoir.

Well-Defined Traps: 

Traditional ideas can be linked with the concept of classic reservoirs which in turn are directly connected with specific kinds of traps including structural and stratigraphic ones, the cause of which is folds, faults, or anticlines.

Unconventional Reservoirs
Conventional forms of reservoirs are relatively easier to develop than unconventional ones because of the difference in the structure of the reservoirs and their permeability. Organic rich reservoirs are those that contain hardware confined in tight literate rock including shale, sandstone, or coal bed where the pore throe of the rock is very small connective and restricted which does not allow conventional mobile oil and gas.

Key characteristics of unconventional reservoirs include: Key characteristics of unconventional reservoirs include:

Low Permeability: 

Heavy and light-tight reservoirs are employed for resources with low permeability that need different drilling and completion technologies like fracking which creates artificial cracks to access these reserves.

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