注气驱油技术发展应用及海上油田启示
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摘要
近年海上低渗油藏、稠油油藏储量占未动地质储量中比例逐年增加,如何有效地动用此类难动储量已成为研究的热点问题。注气驱油技术在国内外已经应用了数十年,而中国海上注气驱油技术尚处于起步阶段。针对这些问题,开展了国内外注气开发理论及应用的综述研究,结合中国海上油田的开发现状和生产难点,分析了海上注气驱油技术发展的7项制约因素,并探讨提出了拟解决措施和方法。研究表明,海上油田注气驱油技术应用潜力较大,关键技术的本土化及多手段联合应用可降低潜在开发风险,提高开发经济效益,对推动海上难动储量的有效动用具有重要意义。
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.
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.
引文
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