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Abstract

This paper focuses on the challenges in understanding the interaction between hydraulic fractures and natural fractures and the impact on the development of the unique, ultra-tight Athel silicilyte reservoir formation in a South Oman oil field. Significant in place volumes remain in Field A (recovery factor <4%) and substantial investment is planned to further develop these volumes both by flank drilling and crestal Miscible Gas Injection. To maximize return on future investments, further understanding of the interaction between the hydraulic fracturing, the rock matrix, and the natural fracture network is seen as key to optimizing development well spacing, well patterns and hydraulic fracture design and placement. Integrated evaluation of the existing data set is being performed using Petrel and SVS software,to visualise key data, and generate conceptual models of natural fracture networks and hydraulic fracture character. These are transferred to effective properties in the dynamic simulator to enable simulation of well productivity, reservoir drainage and in turn development optimization. In-well micro-seismic data is a critical part of this dataset, and will be presented as an invaluable calibration of the hydraulic fracture models.

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/content/papers/10.3997/2214-4609.20132010
2013-12-08
2021-11-29
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