Schlumberger

Industry Article: Novel Algorithms, Workflow Address Tight Formations

A roundup of technology displayed at IPTC 2013

Novel Algorithms, Workflow Address Tight Formations

Publication Date: 03/28/2013

PetroChina Changqing was experiencing low yields due to low permeability in Ordos basin wells. A pilot project was conducted with Schlumberger to increase the effective fracture-flow surface area and apply horizontal drilling techniques in two wells. A novel unconventional fracture model incorporating geologically and geophysically defined natural fracture patterns and mathematical interaction criteria for hydraulic and natural fractures was used, in addition to real-time microseismic through a dual monitoring-well setup, on 26 treatment stages. Rather than using traditional planar fracture models based on a 1D geomechanical model, the new Mangrove reservoir-centric stimulation design software was introduced. A plug-in for the Petrel E&P software platform, the Mangrove software uses a special workflow to enable seismic-to-simulation, optimal completion, and stimulation scenarios through new mathematical models.




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