石油学报 ›› 2019, Vol. 40 ›› Issue (4): 493-508.DOI: 10.7623/syxb201904011

• 典型油气田 • 上一篇    下一篇

安岳气田震旦系、寒武系气藏成藏条件及勘探开发关键技术

杨跃明1, 杨雨2, 杨光2, 宋家荣2, 文龙2, 邓传光3, 夏茂龙2, 冉崎2, 段国彬4, 罗冰2, 谢冰2   

  1. 1. 中国石油西南油气田公司 四川成都 610051;
    2. 中国石油西南油气田公司勘探开发研究院 四川成都 610051;
    3. 中国石油西南油气田公司勘探事业部 四川成都 610051;
    4. 重庆页岩气勘探开发有限责任公司 重庆 400023
  • 收稿日期:2018-12-13 修回日期:2019-02-27 出版日期:2019-04-25 发布日期:2019-05-07
  • 通讯作者: 杨跃明,男,1963年10月生,1983年获江汉石油学院学士学位,2011年获西南石油大学博士学位,现为中国石油西南油气田公司地质勘探首席专家、教授级高级工程师,长期从事油气勘探开发研究及生产管理工作。Email:yangym@petrochina.com.cn
  • 作者简介:杨跃明,男,1963年10月生,1983年获江汉石油学院学士学位,2011年获西南石油大学博士学位,现为中国石油西南油气田公司地质勘探首席专家、教授级高级工程师,长期从事油气勘探开发研究及生产管理工作。Email:yangym@petrochina.com.cn
  • 基金资助:

    国家科技重大专项(2016ZX05004-005,2016ZX05007-004)资助。

Gas accumulation conditions and key exploration & development technologies of Sinian and Cambrian gas reservoirs in Anyue gas field

Yang Yueming1, Yang Yu2, Yang Guang2, Song Jiarong2, Wen Long2, Deng Chuanguang3, Xia Maolong2, Ran Qi2, Duan Guobin4, Luo Bing2, Xie Bing2   

  1. 1. PetroChina Southwest Oil & Gas Field Company, Sichuan Chengdu 610051, China;
    2. Research Institute of Exploration and Development, PetroChina Southwest Oil & Gas Field Company, Sichuan Chengdu 610051, China;
    3. Exploration Division, PetroChina Southwest Oil & Gas Field Company, Sichuan Chengdu 610051, China;
    4. Chongqing Shale Gas Exploration and Development Co., Ltd., Chongqing 400023, China
  • Received:2018-12-13 Revised:2019-02-27 Online:2019-04-25 Published:2019-05-07

摘要:

四川盆地震旦系—下古生界的勘探可追溯至20世纪50年代中期,其勘探过程曲折,对勘探经验进行总结可以为四川盆地深层碳酸盐岩油气勘探提供借鉴。安岳特大型气田成藏主要受德阳—安岳台内裂陷和川中古隆起共同控制;台内裂陷控制规模生烃中心和高效成藏组合,安岳特大型气田具有近源成藏的特征;台内裂陷边缘带、古隆起高部位控制储层发育,有利相带大面积分布,叠加古岩溶作用改造,储层规模分布;台内裂陷、古隆起联合控制规模圈闭的形成和油气富集。气田主力层系龙王庙组、灯影组四段、灯影组二段气藏特征和成藏主控因素有显著差异。龙王庙组气藏属构造背景下的岩性气藏,继承性发育的古隆起是储层形成、油气聚集成藏的关键。灯影组四段气藏主要受大型构造-地层复合圈闭控制,灯影组二段气藏为构造圈闭气藏。灯影组大气田分布受台内裂陷和古侵蚀面控制下的烃储近源匹配和上倾方向的地层封堵控制。针对安岳气田勘探开发形成了储层地震精细描述技术、气层测井精细评价技术、复杂地层快速钻井技术、高温高压气层改造技术等配套技术系列。技术的进步为特大型气田高效勘探、开发提供了有力的技术保障。

关键词: 安岳气田, 灯影组, 龙王庙组, 气藏特征, 富集规律, 勘探开发技术

Abstract:

Exploration of the Sinian-Lower Paleozoic formations in the Sichuan Basin starts from the 1950s, and is tortuous and complex. To summarize the exploration experiences is of great significance of reference for exploration of oil and gas in deep carbonate rocks of the Sichuan Basin. Gas accumulation in the Anyue oversize gas field is chiefly controlled by the Deyang-Anyue intra-platform rift and central Sichuan paleouplift. The intra-platform rift controls the scale hydrocarbon generation center and effective hydrocarbon plays. The Anyue gas field is characterized by near-source hydrocarbon accumulation. The marginal zone of intra-platform rift and high part of the paleouplift control the scale distribution of favorable facies belts of reservoir development, and overlapped by paleokarstic reformation, the reservoirs are widely distributed. The intra-platform rift and paleouplift jointly control formation of the scale traps and hydrocarbon enrichment. Gas reservoir features and major controlling factors for hydrocarbon accumulation have some differences in the main play strata, such as Longwangmiao Formation, and Member 4 and Member 2 of Dengying Formation. The gas reservoir in the Longwangmiao Formation is a lithologic gas reservoir under the tectonic setting, and the inherited paleouplift is a key for reservoir formation and hydrocarbon accumulation. The gas reservoir in the Member 4 of Dengying Formation is mainly controlled by large structural-stratigraphic composite traps, and the gas reservoir in the Member 2 of Dengying Formation is the structural trap. Distribution of the large gas fields in the Dengying Formation is controlled by the intra-platform rift, near-source hydrocarbon-reservoir configuration controlled by the ancient erosion surface and stratigraphic sealing in the updip direction. For exploration and development of the Anyue gas field, four series of technologies are developed, namely, reservoir seismic fine description technology, well logging fine evaluation technology of gas layers, fast drilling technology of complex strata, and stimulation technology for high temperature and high pressure gas layers. Technical progresses provide powerful guarantee for efficient exploration and development of the oversize gas fields.

Key words: Anyue gas field, Dengying Formation, Longwangmiao Formation, gas reservoir feature, enrichment regularity, exploration and development technology

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