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Fracture Model Permeability and Porosity Calibration Using Core and Pressure Transient Analysis Data
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Third EAGE Workshop on Naturally Fractured Reservoirs, Feb 2018, Volume 2018, p.1 - 5
Abstract
The North Kuwait Carbonate (NKJG) reservoirs are currently under development by KOC (Kuwait Oil Company). The appraisal and development of the NKJG offer challenges such as lateral variations in reservoir quality, tight to very tight reservoirs and natural fracturing to a varying degree spatially. The presence of open and connected fractures is one of the key elements to achieve a successful development. Also, the presence of fracture corridors increase the risk associated with drilling. Numerous fracture modelling studies have been supporting both appraisal and development strategies of the fields. A structural evolution model has been developed based on field observations and linked to the regional phases of deformations. Detailed fracture characterization using static BHI (bore hole images) and core data as well as dynamic data has been carried. A wide spectrum of scales of discrete fracture network (DFN) models have been built. The smaller scale models have supported the planning and drilling activities of future appraisal wells has been carried out. The larger scale (i.e. full field) have been used to complete production history matching and forecast. An invaluable set of core and pressure transient analysis data have been acquired with the objective the reduce the uncertainty inherent to the sub-surface natural fracture network.
This paper concentrates on the specific aspect of the calibration of the upscaled porosity and permeability properties from the DFN’s.