RESEARCH ON IMPROVING OIL RECOVERY BY ZONAL PRODUCTION IN MAZHAI OILFIELD

doi:10.3863/j.issn.1000-2634.2003.04.13

Abstract

Abstract:

Mazhai oilfield is a strongly water-wet reservoir with low-permeability, low oil-viscosity, highly variable inter-formational permeability and large well spacing. Up to now, the recovery is only 76.6% of the reserves while the comprehensive water-cut has reached 92.9% as a result of commingled production in the past years. In this paper, the reasons of low recovery in Mazhai are discussed, and the potential of improving oil recovery by zonal production is shown. Experiments on core samples indicate that improved oil recovery could be realized by separate zone production, and the experimental results have been proven in the oilfield practice. Zonal production provides an effective development mode for keeping a high oil production in the oilfield.

Key words: mazhai oilfield, zonal production, experiments, enhanced oil recovery

CLC Number:

TE348

FANG Cai-xia TAN Wen-ning MENG Jian-hua YING Bin CHEN Yong ZHOU Lin-hai. RESEARCH ON IMPROVING OIL RECOVERY BY ZONAL PRODUCTION IN MAZHAI OILFIELD[J]. 西南石油大学学报(自然科学版), 2003, 25(4): 45-47.

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URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.3863/j.issn.1000-2634.2003.04.13

http://journal15.magtechjournal.com/Jwk_xnzk/EN/Y2003/V25/I4/45

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RESEARCH ON IMPROVING OIL RECOVERY BY ZONAL PRODUCTION IN MAZHAI OILFIELD

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