天然气地球科学 ›› 2010, Vol. 21 ›› Issue (3): 427–434.doi: 10.11764/j.issn.1672-1926.2010.03.427

• 天然气地质学 • 上一篇    下一篇

川中地区须家河组致密砂岩气藏气水分布模式及影响因素分析

郝国丽, 柳广弟, 谢增业, 孙明亮   

  1. 1.中国石油大学(北京) 油气资源与探测国家重点实验室,北京 102249;
    2.中国石油大学(北京) 资源与信息学院,北京 102249;
    3.中国石油勘探开发研究院廊坊分院,河北 廊坊 065007
  • 收稿日期:2010-03-09 修回日期:2010-04-26 出版日期:2010-06-10 发布日期:2010-06-10
  • 通讯作者: 郝国丽haoguoli@yahoo.cn E-mail:haoguoli@yahoo.cn
  • 作者简介:郝国丽(1982-), 女,吉林蛟河人,博士研究生,主要从事石油地质及油气成藏机理与分布规律研究.
  • 基金资助:

    国家重点基础研究发展规划(“973”)项目(编号:2007CB209503)资助.

Gas-Water Distributed Pattern in Xujiahe Formation Tight Gas  Sandstone Reservoir and Influential Factor in Central Sichuan Basin

HAO Guo-Li, LIU Guang-Di, XIE Zeng-Ye, SUN Ming-Liang   

  1. 1.State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing 102249,China;
    2.Faculty of National Resource & Information Technology, China University of Petroleum, Beijing 102249, China;
    3.Langfang Branch, Research Institute of Petroleum Exploration and Development, CNPC, Langfang 065007,China
  • Received:2010-03-09 Revised:2010-04-26 Online:2010-06-10 Published:2010-06-10

摘要:

川中地区上三叠统致密砂岩气藏气水关系复杂,气水分布的研究对于气藏的有效开发有着重要意义。以试气资料为基础,通过对川中地区须家河组15个气藏80余口井的测井响应特征研究和含水饱和度的计算,证明高分辨率阵列感应电阻率曲线和可动饱和度大小可对气层、水层进行有效识别;根据单井和剖面气水分布特征的研究,认为川中地区须家河组纵向上有多个气水系统,单气水系统内部自上而下可动水饱和度逐渐增大、呈上气下水的分布状态,宏观上存在3种类型的气水分布模式:岩性型、裂缝岩性型及构造—岩性型,并以合川须二段气藏、充西须四段气藏和广安须六段气藏为例加以说明;结合地质背景分析认为,作为典型的岩性气藏,川中地区须家河组气藏气水分布受优质储层分布的控制,在砂体连通性、裂缝和构造等因素的影响下形成现今的气水分布模式。

关键词: 川中地区, 须家河组, 致密砂岩, 气水分布, 模式

Abstract:

The research of the complex distribution of gas and water in the upper Triassic Xujiahe Formation of central Sichuan basin is important to the effective development of gas reservoir. Based on gas testing data, logging response and water saturation calculation for more than 80 wells in the 15 gas pools, we successfully used the high definition induction logging and movable water saturation to identify the gas or water layer. According to distribution gas and water of single well and cross section, we considered that there were many vertical gas-water systems in the Xujiahe Formation of central Sichuan basin, the movable water saturation gradually increased from top to bottom in a single gas-water system, suggesting gas accumulated at top and water did at bottom. Three gas-water distributed patterns are followed as: lithological pattern in T3x2 of Hechuan area, fractura-|lithological pattern in T3x4 of Chongxi area, and structura-|lithological pattern in T3x6 of Guang′an area, respectively. In combination with geological background, the distribution of gas and water in the Xujiahe Formation of central Sichuan basin was controlled by high-quality reservoir, including to connectivity of sand bodies, fracture and structure.

Key words: Central Sichuan basin, Xujiahe Formation, Tight gas sandstone, Gas and water distribution, Pattern.

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