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It is well known that tight and shale hydrocarbon reservoirs became economic to produce, because of hydrofrac and horizontal well technologies. Hydrofracs are essentially high conductivity pathways linking the reservoir matrix to the wellbore. Both hydrofracs and horizontal wells helped to dramatically increase reservoir contact from the wellbore, increasing ultimate well recovery and reducing lifting plus development costs. Intrinsic reservoir productivity, in context with the production environment (e.g. offshore, onshore, harsh, tropical), determines economics, and whether or not reserves are “unconventional” or, in historical parlance, even “stranded.”
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