"The Barnett Shale of North Texas is an ultra low permeability reservoir that must be effectiv ely fracture stimulated in order to obtain commercial production. As a result, techniques to optimize hydraulic fracturing effectiveness have evolved over the past decade. The first Barnett Shale “discovery” well, the C.W. Slay #1, was drilled in 1981 and it was almost 17 years before any significant commercial success was found in the Barnett, so the Barnett is a relatively new play."
"Since 2005, Williams has drilled more than 100 horizontal wells in the Barnett shale, an unconventional gas reservoir that underlies a 19-county area in the Fort Worth basin. Slick-water fracturing is the primary technique used to hydraulically fracture the wells. Recently, Williams and several other operators tried fracturing two or more adjacent wells simultaneously with the goal of exposing the shale to more pressure and produce a more complex web of fractures, thereby improving the initial rates and reserves. Simultaneous fracturing or “simo-frac” technique is expensive and requires much more planning, coordination, and logistics as well as a larger surface location than single frac jobs."
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