苏里格“三低”油气藏水平井压裂工艺研究与应用

发布时间：2018-03-07 12:13

  本文选题：水平井压裂　切入点：裂缝参数优化　出处：《东北石油大学》2017年硕士论文　论文类型：学位论文

【摘要】：随着石油工业的不断发展,水平井开始广泛应用于科学研究和实际生产中,逐渐成为人们重点关注的主题。它具有单井生产产量高、排油面积大、渗透率高、储量利用率高、滞碍物和恶劣环境灵活避开等优点,成为油气田开发建产的主要方式之一。苏里格气田属于典型的低渗透率、低压力、低丰度“三低”气藏,气井射孔后基本没有自然产能,压裂改造成为产能建设的必然选择。苏53区块作为首个以水平井为主要完井方式的开发区块,急需开展相关水平压裂改造工艺技术的针对性研究与应用,为经济有效的开发建产提供技术指导与支撑。本课题在对苏里格气田苏53区块地质和储层特征研究分析的基础上,开展了水平井压裂工艺研究,主要包括利用数模手段开展压裂裂缝参数优化研究、对压裂液体系配方和支撑剂进行优化与优选、开展了液氮伴注助排参数的优化和强制闭合快速返排放喷制度的优化。并开展了新工艺的现场试验,取得了较好的应用效果。
[Abstract]:With the continuous development of petroleum industry, horizontal wells have been widely used in scientific research and practical production, and gradually become the focus of attention. It has high single well production, large oil discharge area, high permeability and high reserve utilization. The advantages of hysteresis and abominable environment have become one of the main ways to develop and produce oil and gas fields. Sulige gas field is a typical "three low" gas reservoir with low permeability, low pressure and low abundance, and there is basically no natural productivity after gas well perforation. As the first development block with horizontal wells as the main completion mode, it is urgent to carry out relevant research and application of horizontal fracturing technology. Based on the research and analysis of geological and reservoir characteristics of Su53 block in Sulige gas field, the fracturing technology of horizontal well is studied. It mainly includes the research of fracturing fracture parameter optimization by means of mathematical model, and the optimization and selection of fracturing fluid system formula and proppant. The optimization of the parameters of liquid nitrogen followed by injection and the optimization of forced closed rapid back injection system were carried out, and the field test of the new process was carried out, and good application results were obtained.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE377
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本文编号：1579247