Question

prior to the shale gas and shale oil revolution, shale was considered to be a poor reservoir rock because of its low​

Answer 1

Answer:

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Answer 2

Organic matter in shale has greater porosity and permeability than the accompanying rock matrix, and it can create holes and channels for hydrocarbon storage and flow.

The extraction of shale oil is quite costly, far more expensive than the extraction of crude oil. Because of this cost, the usage of shale oil in the United States has varied with the price of crude oil. Businesses have only dug for oil shale when crude oil prices are high. The "Shale Revolution" refers to the use of hydraulic fracturing and horizontal drilling to greatly expand oil and natural gas output in the United States, notably from tight oil formations, which currently account for 36% of total U.S. crude oil production. Shales have lower permeability and lower well yields. Geology is vital in determining a well's effect area and the spacing of two or more wells. The narrower the radius of effect of the well at a particular rate of pumping, the more porous and permeable the rock.

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