The Eagle Ford may soon become yet another major shale play in the
U.S. to be developed using stacked laterals in more than one horizon.
So
far, operators in the play have targeted only one "landing zone" within
the Eagle Ford for the placement of horizontal wells. In those areas
where the Eagle Ford is thick, this landing zone has often been chosen
closer to the bottom of the formation, in the Lower Eagle Ford (the
shale's thickness varies across the play, from less than 100 feet to
over 350 feet; lateral placement also varies depending on the geology in
each specific location).
Most recently however, some operators
are suggesting that in those areas where the formation is thicker, the
Eagle Ford may be successfully developed by placing laterals
simultaneously in the Lower Eagle Ford and the Upper Eagle Ford, similar
to how this is being done in the Three Forks interval in the Williston
Basin. While the benefit of gaining additional economic drilling
locations within the same acreage is obvious, another important (and
less trivial) upside the industry is focusing on is the potential
"synergy" between adjacent fracture stimulations.
The hope is that the
overlapping and intertwined fracture networks from wells located in the
Upper Eagle Ford and Lower Eagle Ford would provide a EUR uplift for all
wells in the array.
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