Adaptability and Development Suggestion of Barrier Water Flooding for Reservoir with Big Gas Cap and Thin Oil ring

TONG  Kai-Jun, ZHAO  Chun-Ming, ZHANG  Ying-Chun, HE  Xin-Rong

doi:10.11764/j.issn.1672-1926.2011.03.566

Natural Gas Geoscience >

2011 , Vol. 22 >Issue 3: 566 - 570

DOI: https://doi.org/10.11764/j.issn.1672-1926.2011.03.566

Adaptability and Development Suggestion of Barrier Water Flooding for Reservoir with Big Gas Cap and Thin Oil ring

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1.Tianjin Branch of CNOOC Limited, Tianjin 300452,China;
2.CNOOC Energy Technology and Service-Oilfield Engineering Research Institute, Tianjin 300452,China.

Received date: 2010-12-02

Revised date: 2011-02-22

Online published: 2011-06-10

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Abstract

For reservoirs with big gas cap and thin oil\|ring, gas channeling may obviously reduce well productivity.So how to prevent gas channeling is an important problem in the development of such reservoirs.This paper takes reservoir E_s3-I of JZ25-1 oilfield as an example, using numerical simulation to study the adaptability of barrier water flooding, and analysing the technical feasibility and operational parameters of barrier water flooding.The results show that depletion and common water flooding are not available in the development of such reservoirs, while barrier water flooding can increase the recovery ratio; the effect is the best when the barrier water injection takes 60 percent of total water injection.

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Key words： Reservoir with gas cap; Barrier water flooding; Narrow oil rim; Simulation; JZ25-1 oil field.<; p>

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TONG Kai-Jun, ZHAO Chun-Ming, ZHANG Ying-Chun, HE Xin-Rong . Adaptability and Development Suggestion of Barrier Water Flooding for Reservoir with Big Gas Cap and Thin Oil ring[J]. Natural Gas Geoscience, 2011 , 22(3) : 566 -570 . DOI: 10.11764/j.issn.1672-1926.2011.03.566

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