Development and Application of Gas Injection for Oil Recovery from Offshore Oilfields

doi:10.11885/j.issn.1674-5086.2018.07.18.01

Abstract

Abstract: The proportion of offshore low-permeability reservoirs and heavy oil reservoirs in untouched geological reserves has shown an annual increase. Thus, identifying methods for effective use of such hard-to-access reserves has become a major issue. Although gas injection for oil recovery has been applied both domestically and internationally for decades, China's offshore gas injection technology is still in its beginning stages. Focusing on these problems, this study examines the theory and application of gas injection development in both China and the world. Considering the current state of development and the production difficulties of China's offshore oilfields, seven constraints of the development of offshore gas injection technology in China were first analyzed, and solutions and measures were then proposed. The research shows that the potential use of gas injection for oil recovery technology in offshore oilfield applications is great and that localizing key technologies and applying multiple methods can reduce developmental risks and increase economic benefits.

Key words: gas injection for oil recovery, theory progress, application status, offshore oilfield, technology upgrade

CLC Number:

TE341

FENG Gaocheng, HU Yunpeng, YAO Weiying, ZHANG Yu, YUAN Zhe. Development and Application of Gas Injection for Oil Recovery from Offshore Oilfields[J]. 西南石油大学学报(自然科学版), 2019, 41(1): 147-155.

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