The casing process keeps the well open and protects the earth, similar to the efforts to protect groundwater. The hard metal casing shores up the wellbore and extends through both the vertical (if the well is completed vertically) and the horizontal drilling phases, assuring the long-term integrity of the well from end-to-end.

Cement is then pumped down the well under pressure and forced up the outside of the steel casing until the well column is sealed. The casing process ensures that the producing well is isolated from any fresh water zones. This assures during the producing life of the well that fracture fluids, produced brine water and natural gas are isolated and the freshwater bearing zones are protected.

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