--> ABSTRACT: New Downhole-blended Real-time Fracture Stimulation of Deep Gas Reservoirs, by George L. Scott and Gary Covatch; #90906(2001)

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George L. Scott1, Gary Covatch2

(1) RealtimeZone & D.O.E. National Energy Technology Laboratory, Roswell, NM
(2) DOE National Energy Technology Laboratory, Morgantown, WV

ABSTRACT: New Downhole-blended Real-time Fracture Stimulation of Deep Gas Reservoirs

An innovative real-time stimulation procedure allows operators to make instantaneous changes in composite fluid rheology and proppant concentration at the perforations via dowhole blending. In successful field-testing, a downhole-blended composite stimulation fluid mixture was injected into a deep Morrow sandstone gas reservoir at 12,100-12,300 feet. The stimulation mix was comprised of CO2 that was injected down tubing, and methanol, gel and proppant that was injected down casing. The end result was a commercially productive gas producer in a well that had been previously scheduled for plugging, and at less than half of the typical injection pressures and fracture stimulation cost. A gamma tracer survey confirmed the results of this innovative completion method.

AAPG Search and Discovery Article #90906©2001 AAPG Annual Convention, Denver, Colorado