Quantitative Characterization Method and Application of Reservoir Flow Field

doi:10.11885/j.issn.1674-5086.2019.10.25.03

Abstract

Abstract: Due to long term washing of water injection in the complex fault block reservoirs, the distribution of reservoir flow field would be more and more complicated and it results in forming different types of reservoir flow field with different intensities. In regions of high intensity of reservoir flow field, invalid water injection is very serious. But water injection cannot reached the regions of low intensity easily. It results in a poor efficiency of reservoir development and makes it hard to adjust reservoir development. Due to the above reasons, taking a case Block Zao Z of the first member of the Kongnan, Cangdong Sag, south of Huanghua Depression, the simulation model was modeled to study quantitatively reservoir flow field at high water cut stage. According to the influence on reservoir flow field, the primary characterization parameters were selected from some static and dynamic parameters, including permeability, pressure gradient, oil saturation and surface flux. A calculation model of intensity of reservoir flow field was proposed by the theory of fuzzy mathematics. The ranges of different types of reservoir flow field were determined on the study reservoir. And then technical strategies of reservoir flow field adjustment were given in different types of reservoir flow field. The implement results of flow field adjustment of the study reservoir show that the characterization method of reservoir flow field could be applied to a correct understanding of the characteristic of reservoir flow filed at high water cut stage. It is helpful to guide to adjust layer series and well groups and to improve effect of reservoir development.

Key words: reservoir flow field, quantitative characterization, flow field intensity, flow field adjustment, Huanghua Depression

CLC Number:

TE341

LU Fengming, WU Xi, ZHU Hongyun, ZHANG Yang, WANG Rui. Quantitative Characterization Method and Application of Reservoir Flow Field[J]. 西南石油大学学报(自然科学版), 2020, 42(4): 111-120.

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URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.11885/j.issn.1674-5086.2019.10.25.03

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