Petroleum Technology Digest: Horizontal waterflooding increases injectivity, speeds recovery ///

Grand Resources is applying horizontal waterflooding in northeast Oklahoma's Bartlesville Sandstone to realize much higher injectivity, improved sweep and accelerated recovery. The combined effect should improve present value (PV10) over five-fold, compared to conventional vertical waterflooding. Grand has successfully drilled an injection and two production wells using short-radius drilling techniques. Real-time learning and innovation proved effective in controlling costs. Initial injection, which is just now beginning, confirms higher injectivity. More time, but not many months, is needed to realize the oil production response that simulation predicts.

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