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  • Petroleum Technology Digest: Fracture mapping and modeling optimize CBM treatments


    L. Stutz and K. Fisher

    Anadarko Petroleum Corp. employed advanced fracture mapping technology by using new, in-well tiltmeters and fracture modeling to optimize hydraulic fracture stimulation treatments in two coalbed methane (CBM) plays. The plays are in Utah's Helper field and the Copper Ridge field of southwestern Wyoming. At Helper, data from tiltmeters proved that single-stage treatments could stimulate the entire multi-seam interval. Savings of $35,000 to $50,000/well were realized, compared to prior multiple-stage treatments. At Copper Ridge, treatments were optimized to stay away from permeable water sands. Savings from reduced water production were $1.3 million in the first year. In addition, individual well treatment costs are lower, ranging from $100,000 to $150,000 less per well. Anadarko's cost savings in stimulations and disposal for the 16-well, Copper Ridge pilot program exceeded the actual costs incurred for fracture treatments.

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