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Industry Article: Optimized Treatment Design Shows Promise

The first horizontal wells drilled in the Chang-7 formation deliver significant production increases in Ordos basin tight oil reservoirs

Optimized treatment design shows promise
Publication: E&P
Publication Date: 02/01/2013

Challenging low-permeability oil reservoirs in the Ordos basin in north-central China offer proof that in-depth reservoir understanding, advanced design and evaluation workflows, and appropriate completion and fracturing techniques, in combination can result in production increases of as much as 80% to 100% over baseline. A pilot project recently conducted in the basin set out to quantify production improvements in two horizontal wells and three vertical wells placed between two horizontal wells equipped for real-time microseismic fracture monitoring. The Mangrove reservoir-centric stimulation design software, an unconventional fracture model incorporating geologically and geophysically defined natural fracture patterns and mathematical interaction criteria for hydraulic and natural fractures, was used to optimize completion design. Real-time microseismic fracture monitoring through a dual-monitoring well setup was performed on a total of 26 stages of fracturing treatments.



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