石油学报 ›› 2020, Vol. 41 ›› Issue (5): 574-583.DOI: 10.7623/syxb202005006

• 油田开发 • 上一篇    下一篇

四川盆地高石梯区块震旦系灯影组四段储层类型及气井产能模式

谷一凡1,2, 周路1, 蒋裕强1,2, 倪佳3, 李俊良4, 朱讯5, 付永红1,2, 蒋增政6   

  1. 1. 西南石油大学地球科学与技术学院 四川成都 610500;
    2. 中国石油天然气集团公司非常规油气重点实验室储层评价研究室 四川成都 610500;
    3. 中国石油西南油气田公司蜀南气矿 四川泸州 646000;
    4. 中国石油西南油气田公司川中油气矿 四川遂宁 629000;
    5. 中国石油西南油气田公司勘探开发研究院 四川成都 610041;
    6. 四川杰瑞泰克科技有限公司 四川成都 610041
  • 收稿日期:2019-03-11 修回日期:2020-04-02 出版日期:2020-05-25 发布日期:2020-06-08
  • 通讯作者: 蒋裕强,男,1963年12月生,1985年获西南石油学院学士学位,1993年获西南石油学院硕士学位,现为西南石油大学地球科学与技术学院教授、博士生导师,主要从事非常规油气地质、储层地质及油气藏开发地质等方面的研究工作。Email:xnsyjyq3055@126.com
  • 作者简介:谷一凡,男,1990年10月生,2014年获西南石油大学矿产普查与勘探专业学士学位,现为西南石油大学地球科学与技术学院博士研究生,主要从事深层碳酸盐岩、致密油气方面的研究工作。Email:514468587@qq.com
  • 基金资助:

    国家自然科学基金项目(No.41430316)和国家科技重大专项(2017ZX05008-004-008)资助。

Reservoir types and gas well productivity models for Member 4 of Sinian Dengying Formation in Gaoshiti block, Sichuan Basin

Gu Yifan1,2, Zhou Lu1, Jiang Yuqiang1,2, Ni Jia3, Li Junliang4, Zhu Xun5, Fu Yonghong1,2, Jiang Zengzheng6   

  1. 1. School of Geoscience and Technology, Southwest Petroleum University, Sichuan Chengdu 610500, China;
    2. Reservoir Evaluation Laboratory, CNPC Key Laboratory of Unconventional Oil&Gas, Sichuan Chengdu 610500, China;
    3. Southern Sichuan Gas District, PetroChina Southwest Oil&Gasfield Company, Sichuan Luzhou 646000, China;
    4. Central Sichuan Oil&Gas Field, PetroChina Southwest Oil&Gasfield Company, Sichuan Suining 629000, China;
    5. Exploration and Development Research Institute, PetroChina Southwest Oil&Gasfield Company, Sichuan Chengdu 610041, China;
    6. Sichuan Geotech Science and Technology Ltd. Co., Sichuan Chengdu 610041, China
  • Received:2019-03-11 Revised:2020-04-02 Online:2020-05-25 Published:2020-06-08

摘要:

四川盆地高石梯区块震旦系灯影组四段气藏以丘滩复合体沉积和表生岩溶作用为主控因素,具有多因素叠加成因,依据现有储层分类评价标准对灯影组四段进行储层表征存在一定局限。基于岩心观察、常规测井和成像测井资料分析,结合配套CT扫描和薄片鉴定,利用储渗空间的搭配关系可将高石梯区块内灯影组四段的岩溶储层划分为孔隙型、孔隙-溶洞型和裂缝-孔洞型3类。其中,裂缝-孔洞型和孔隙-溶洞型储层具有物性好、开采动用较容易、试采效果好的特点,为灯影组四段的优质储层类型。在单井储层类型精细划分的基础上,运用常规地震剖面的储层预测技术、"蚂蚁体"追踪技术,结合典型井的试井曲线、生产曲线和无阻流量等动态资料,建立高石梯区块灯影组四段气井产能划分方案,可将气井产能模式分为3类(Ⅰ、Ⅱ和Ⅲ类)。其中,Ⅰ类井产能模式和Ⅱ类井产能模式的优质储层占比高,其地震剖面上显示灯影组四段上亚段呈宽波谷,"蚂蚁体"属性显示缝洞体较发育,具有较好的试采效果。

关键词: 储层类型, 气井产能模式, 气藏开发, 高石梯区块, 四川盆地, 震旦系, 灯影组

Abstract:

The Member 4 of Sinian Dengying Formation gas reservoir in Gaoshiti block of Sichuan Basin is mainly controlled by the deposition of mound-shoal complex and epigenic karstification. Due to the cause of multi-factor superposition, there are some limitations in reservoir characterization of Member 4 of Dengying Formation according to the existing reservoir classification and evaluation criterion. Based on core observations, conventional and imaging log data analyses, CT core scanning and thin section identification, the karst reservoirs of Member 4 of Dengying Formation in Gaoshiti block can be divided into pore type, pore-vuggy type and fracture-vuggy type with matching reservoir spaces. Among them, the pore-vuggy and pore-vuggy reservoirs have the characteristics of good physical properties, easy exploitation and good pilot production, and are the high-quality reservoir type in Member 4 of Dengying Formation. In addition, on the basis of fine reservoir classification in single wells, application of conventional seismic reservoir prediction and ant tracking technology, as well as analyses of the dynamic data such as well test curves, production curves and open flow capacities of typical wells, the division scheme of gas well productivity can be established and the productivity models can be classified into three categories (Ⅰ, Ⅱ and Ⅲ) for Member 4 of Dengying Formation in Gaoshiti block. The high- quality reservoir has a high proportion in the productivity model Ⅰ and model Ⅱ, showing broad trough-shaped seismic reflection in the upper submember of Member 4 of Dengying Formation, well developed fracture-vuggy bodies in ant tracking attributes, and good effects during pilot production.

Key words: reservoir type, gas well productivity model, gas reservoir development, Gaoshiti block, Sichuan Basin, Sinian, Dengying Formation

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