Impact of dynamic slippage on productivity of shale reservoirs. (1st October 2015)

• Record Type: Journal Article
• Authors: Patwardhan, Samarth D.; Bhore, Niranjan; Banerjee, Anirban; Kumar, G. Suresh
• Is Part Of: World journal of engineering. Volume 12:Number 5(2015)
• Page Start: 443
• Page End: 451
• Publication Date: 2015-10-01
• Subjects: Reservoir model -- Flow Mechanisms -- Gas-permeability changes -- Shale reservoirs; Engineering -- Periodicals; 620
• DOI: 10.1260/1708-5284.12.5.443
• Languages: English
• ISSNs: 1708-5284

Abstract

Abstract : Ultra low permeability rocks such as shales exhibit complex fracture networks which must be discretely characterized in our reservoir models to evaluate stimulation designs and completion strategies properly. The pressure (Darcy's law) and composition driven (Fick's law) flow mechanisms when combined result in composition, pressure and saturationdependent slippage factor. The approach used in this study is to utilize pressure-dependent transmissibility multipliers to incorporate apparent gas-permeability changes resulting from multi-mechanism flows in commercial simulators. This work further expounds on the effectiveness of the theory by presenting a descriptive analysis between two commercially utilized numerical simulators. The applicability of dynamic slippage as an effective flow mechanism governing gas flow mechanisms within the computational environment of two different simulators is attempted in this analysis. Results indicate that slippage-governed flow in modelling shale reservoirs should not be ignored.