文档介绍：摘要
低渗透油田是指油层储层渗透率低、丰度低、单井产能低的油田。随着建设时间的延长,低渗透油田普遍出现原油产量下降,综合含水上升,地面系统布局不合理、负荷不平衡、设施腐蚀老化等问题,需更新的站、所、设备设施、管线数量日益增多,导致生产运行费用、维修维护费用和管理费用逐年增高,不仅影响了油田的安全生产,同时影响了油田开发的经济效益。在我国各大油田进入开发中后期、能源紧缺的情况下,加紧低渗透油气的勘探开发具有很重要的现实作用和战略意义。
中国低渗透油气资源丰富,具有很大的勘探开发潜力。近二十年来,在低渗透砂岩、海相碳酸盐岩、火山岩勘探方面取得了很大的发现,形成了国际一流的开发配套技术。低渗透油气田开发成熟技术有注水、压裂、注气等。多分支井技术、地震裂缝成像和裂缝诊断技术、注气提高采收率等新技术快速发展,发达国家低渗透油气田开发技术日趋成熟。本文主要介绍了当前低渗透油藏的开发技术。
关键词:低渗透油藏;油藏表征;油气藏保护;欠平衡钻井;井网部署
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Refers to the low permeability oilfield reservoir reservoir, low permeability, low abundance and low single well production capacity of the oil field. As the extension of construction time, low permeability oil field oil production decline generally, comprehensive water cut rise, ground system layout is unreasonable, unbalanced load, facilities corrosion problems such as aging, need to update the number of stand, facility, equipment, pipeline, led to the production operation cost, maintenance maintenance costs and management fees increased year by year, not only affect the oilfield production safety, at the same time affected the economic benefits of oilfield development. In our country each big oilfield in mid and late into the development, energy shortage situation, tightening of low permeability oil and gas exploration and development have very important realistic and strategic significance.
China is rich in low permeability oil and gas resources,Has a great potential for exploration and development. Over the past twenty years, In low permeability sandstone, Marine carbonate rock, volcanic rock exploration has made great discovery, Formed the international first-class supporting technology development. Low permeability oil and gas field development mature technology with water injection, fracturing, gas injection. Multi-branch Wells, seismic imaging and cracks diagnosis technology, ior by gas injection, etc. New technology rapid development, Low permeability oil and gas field development technology in the developed countries