Abstract: In accordance with an illustrative embodiment of the present invention, an irrigation, commercial or municipal utility district high flow capacity water well is completed in a manner such that water is produced from a substantially horizontal lower portion of the well bore that is located in the lower 20% of the water saturated thickness of the aquifer.

Abstract: In accordance with illustrative embodiments of the present invention, a process for the secondary recovery of oil found in a dolomite formation includes generating in-situ decomposition of the dolomite by heating it to a temperature in the range of from 1,400.degree.-1,750.degree. F. which produces a reaction that has magnesium and calcium oxides and a large quantity of carbon dioxide as products. The carbon dioxide saturates the oil in surrounding formations and makes it more movable toward one or more recovery wells. The heat is convected into the formation by a fluid that is injected into the well from the surface.