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Effect of heterogeneity of layered reservoirs on polymer flooding: An experimental approach using five-spot glass micromodel

Meybodi, H. E ; Sharif University of Technology | 2008

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  1. Type of Document: Article
  2. Publisher: Society of Petroleum Engineers , 2008
  3. Abstract:
  4. Despite the numerous experimental studies, there is a lack of fundamental understanding about how the local and global heterogeneity control the efficiency of polymer flooding. In this work a series of water and polymer injection processes are performed on five-spot glass micromodels which are initially saturated with the crude oil at varying conditions of flow rate, water salinity, polymer type and concentration. Three different pore structures in combine with different layer orientations are considered for designing of five different micromodel patterns. It has been observed that the oil recovery of water flooding is increasing with the salinity concentration, for the ranges studied here. While, it shows there is an optimum value of concentration in which maximize the oil recovery in polymer flooding. The results confirmed that the highest oil recovery is obtained when the layers are perpendicular to the mean flow direction for both water and polymer flooding. Also, the oil recovery in polymer flooding increases with the increase of layer inclination angle, however it does not increase for waterflooding. In addition, the oil recovery is strongly affected by the local heterogeneity which is near injection zone. This study demonstrates the applicability of micromodel for studying of enhanced oil recovery techniques in locally and globally heterogeneous five-spot models
  5. Keywords:
  6. Crude petroleum ; Engineering exhibitions ; Glass ; Oil well flooding ; Petroleum engineering ; Petroleum reservoir evaluation ; Polymers ; Recovery ; Salinity measurement ; Solar radiation ; Well flooding ; Crude oil ; Enhanced oil recovery ; Experimental approaches ; Experimental studies ; Five-spot ; Glass micromodels ; Inclination angles ; Layer orientations ; Layered reservoirs ; Local heterogeneity ; Mean-flow directions ; Oil recoveries ; Optimum value ; Polymer flooding ; Polymer injection ; Water salinity ; Waterflooding ; Water injection
  7. Source: 70th European Association of Geoscientists and Engineers Conference and Exhibition - Incorporating SPE EUROPEC 2008, Rome, 9 June 2008 through 12 June 2008 ; Volume 3 , 2008 , Pages 1445-1454 ; 9781605604749 (ISBN)
  8. URL: https://onepetro.org/SPEEURO/proceedings-abstract/08EURO/All-08EURO/SPE-113820-MS/144192