中国石油勘探 ›› 2017, Vol. 22 ›› Issue (2): 44-49.DOI: 10.3969/j.issn.1672-7703.2017.02.005

• 石油地质 • 上一篇    下一篇

川中地区中侏罗统沙溪庙组一段油气藏特征及勘探潜力评价

黄东1, 李育聪1, 刘敏1, 杨家静1, 白蓉1, 杨智2   

  1. 1. 中国石油西南油气田公司勘探开发研究院;
    2. 中国石油勘探开发研究院
  • 收稿日期:2015-12-01 修回日期:2016-12-30 出版日期:2017-03-10 发布日期:2017-03-10
  • 作者简介:黄东,(1980-),男,四川大邑人,硕士,2008 年毕业于西南石油大学,工程师,现主要从事致密油气地质综合研究工作。地址:四川省成都市高新区天府大道北段 12 号中国石油科技大厦勘探开发研究院 801 室,邮政编码:610041。E-mail:hdong@petrochina.com.cn
  • 基金资助:
    国家科技重大专项“大型油气田及煤层气开发”子课题“致密油富集规律与勘探开发关键技术”(2016ZX05046)。

Reservoir features and exploration potential of the 1st member of Shaximiao Formation of Middle Jurassic in central Sichuan Basin

Huang Dong1, LiYucong1, Liu Min1, Yang Jiajing1, Bai Rong1, Yang Zhi2   

  1. 1. Exploration and Development Research Institute, PetroChina Southwest Oil & Gas Field Company;
    2. PetroChina Research Institute of Petroleum Exploration & Development
  • Received:2015-12-01 Revised:2016-12-30 Online:2017-03-10 Published:2017-03-10
  • Contact: 10.3969/j.issn.1672-7703.2017.02.005

摘要: 近年来,西南油气田公司成功将水平井体积压裂技术应用于中侏罗统沙溪庙组一段(简称沙一段)致密砂岩油气藏,有力推动了致密砂岩油气的勘探开发。以目前勘探开发效益最好的公山庙沙一段油气藏为解剖对象,按照致密油气的研究思路,基于源储的配置关系将沙一段油气藏划分为两大勘探开发领域:第一类为底部席状砂致密油气;第二类为中下部河道砂常规远源油气。综合分析认为,沙一段底部席状砂成藏条件较河道砂好,受沉积微相控制,虽然厚度小,但分布广泛,物性相对较好,源储配置关系优越,油气充注程度高,含油气面积大,具备采用水平井体积压裂技术进行规模效益开发的条件。

关键词: 水平井体积压裂, 源储配置, 油气领域, 公山庙, 沙一段, 川中地区

Abstract: In recent years, PetroChina Southwest Oil & Gas Field Company has successfully applied the horizontal well volume fracturing technology in tight sandstone reservoir in the 1st member of Shaximiao Formation ("Sha 1 Member") of Middle Jurassic to promote the exploration and development of tight sandstone oil and gas. Taking the Sha 1 Member reservoir in Gongshanmiao area (which has the best exploration and development benefts) as an example, according to the research approach of tight oil and gas and the source-reservoir confguration, the Sha 1 Member reservoir is divided into two types of exploration and development domains: (1) tight oil and gas in sheet sandstones at the bottom; and (2) conventional distal oil and gas in channel sandstones in the middle-lower parts. According to comprehensive analysis, the sheet sandstones at the bottom of the Sha 1 Member have better hydrocarbon accumulation conditions than the channel sandstones. Controlled by sedimentary microfacies, such sheet sandstones are thin, but they are widely distributed with better physical properties, superior source-reservoir confguration, high oil and gas flling degree and large hydrocarbon-bearing area. Thus, these sheet sandstones are worthy of large-scale benefcial development by the horizontal well volume fracturing technology.

Key words: Gongshanmiao, Sha 1 Member, central Sichuan Basin, horizontal well volume fracturing, source-reservoir confguration, oil and gas domain

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