Fracture Geometry Optimization: Designs Utilizing New Polymer-Free Fracturing Fluid and Log-Derived Stress Profile / Rock Properties


Brett Rimmer, Curtis MacFarlane, Chuck Mitchell, Schlumberger; Henry Wofi,
Newport Petroleum Company; Mathew Samuel, Schlumberger

2000 SPE International SPE Symposium on Formation Damage held in Lafayette,
Louisiana, 23-


Newport Petroleum Co. embarked on an exploration and development drilling program in a channel sand. This clastic channel was situated within a much larger, fully developed field located in Central Alberta. The new wells were drilled for a target interval that that is known to have low reservoir permeability, and would have to be fracture stimulated to produce economically. The offset wells were all drilled and duly stimulated using a design based on historical knowledge. Following treatment, they produced at a rate that wascost effective; however, the rate was not as high as expected. In addition, post job pressure analysis of the treatments showed that the actual recorded job pressures could not be matched with the initial simulator predictions. The net pressure indicated uncontrolled fracture height growth.