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Vol. 26 No. 17 (2014): Vol 26 Issue 17

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Numerical Well Testing Interpretation Method of Composite Model and Applications in Offshore Reservoirs by Polymer Flooding

https://doi.org/10.14233/ajchem.2014.18205
Haiyang Yu
MOE Key Laboratory of Petroleum Engineering, China University of Petroleum Beijing, Beijing 102249, P.R. China
Hui Guo
MOE Key Laboratory of Petroleum Engineering, China University of Petroleum Beijing, Beijing 102249, P.R. China ; The Second Oil Production Plant of North China Branch, SINOPEC, Ningxia 751506, P.R. China
Shiqing Cheng
MOE Key Laboratory of Petroleum Engineering, China University of Petroleum Beijing, Beijing 102249, P.R. China
Lei Li
MOE Key Laboratory of Petroleum Engineering, China University of Petroleum Beijing, Beijing 102249, P.R. China
Shuping Chang
MOE Key Laboratory of Petroleum Engineering, China University of Petroleum Beijing, Beijing 102249, P.R. China
Tiantian Zhang
Department of Petroleum Engineering, University of Texas at Austin, Austin 78712, Texas, USA
Guozhi Feng
CNOOC Research Institute, Beijing 100027, P.R. China

Corresponding Author(s) : Haiyang Yu

haiyangyu@utexas.edu

Asian Journal of Chemistry, Vol. 26 No. 17 (2014): Vol 26 Issue 17

Abstract

This work presents numerical well testing method of composite model for formation evaluation by using pressure transient data, which are provided by CNOOC field tests. Since polymer flooding reservoirs are effected by multiple factors, the well testing composite models are established by considering wellbore storage effect, convection and diffusion. Typical curves, sensitivity analysis and history match are also conducted. In the Newtonian-non-Newtonian composite model, the pressure derivative curves of the transient section and the radial flow section obviously move upward with the increase of polymer viscosity. In the non-Newtonian-Newtonian composite reservoir, the greater of the oil viscosity, the greater magnitude upturned of the transition section. The data of polymer flooding field tests provided by CNOOC indicates that our work can accurately evaluate reservoir characteristics in relatively homogeneous offshore reservoirs by polymer flooding, which emphasizes the potential for the application of this method in relatively homogeneous offshore and onshore reservoirs.

Keywords

Well testing Polymer flooding Composite model History match
Yu, H., Guo, H., Cheng, S., Li, L., Chang, S., Zhang, T., & Feng, G. (2014). Numerical Well Testing Interpretation Method of Composite Model and Applications in Offshore Reservoirs by Polymer Flooding. Asian Journal of Chemistry, 26(17), 5783–5788. https://doi.org/10.14233/ajchem.2014.18205
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