石油与天然气地质 ›› 2013, Vol. 34 ›› Issue (1): 77-84.doi: 10.11743/ogg20130110

• 层序与储层 • 上一篇    下一篇

川西坳陷合兴场-丰谷地区须家河组致密砂岩气藏精细勘探

林小兵1,2, 刘莉萍3, 田景春1,2, 付菊3, 伍玲3, 杨映涛3   

  1. 1. 成都理工大学 油气藏地质及开发工程国家重点实验室,四川 成都610059;
    2. 成都理工大学 沉积地 质研究院,四川 成都610059;
    3. 中国石化 西南油气分公司 勘探开发研究院,四川 成都610081
  • 收稿日期:2012-06-15 修回日期:2012-12-31 出版日期:2013-02-28 发布日期:2013-03-18
  • 作者简介:林小兵(1980—),男,博士、讲师,沉积学与储层地质学。
  • 基金资助:

    国家自然科学基金项目(41002032)。

Fine exploration of tight sandstone gas reservoirs in the Xujiahe Formation, Hexingchang-Fenggu area,the western Sichuan Basin

Lin Xiaobing1,2, Liu Liping3, Tian Jingchun1,2, Fu Ju3, Wu Ling3, Yang Yingtao3   

  1. 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, Sichuan 610059, China;
    2. Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu, Sichuan 610059, China;
    3. Exploration and Development Institute, SINOPEC Southwest Petroleum Branch Company, Chengdu, Sichuan 610081, China
  • Received:2012-06-15 Revised:2012-12-31 Online:2013-02-28 Published:2013-03-18

摘要:

为了提高致密砂岩气藏的勘探成功率,以川西坳陷合兴场-丰谷地区须家河组致密砂岩气藏为例,建立了以地质综合研究为指导,地震、地质紧密结合的精细勘探技术。合兴场-丰谷地区须家河组致密砂岩气藏精细勘探的核心,是在砂组精细等时划分及对比的基础上,以砂组为单位,将生产动态资料与静态地质特征相结合进行典型气藏解剖,明确气藏特征及成藏主控因素;通过加强地震预测、钻井跟踪、测试选层及工程工艺过程中的地质综合研究,完成油气富集区预测及井位部署,且在钻井跟踪过程中即时修正认识,提高钻探成功率。精细勘探的结果显示,研究区气藏具水溶脱气特征,为古构造-成岩圈闭气藏,控制成藏的关键因素是古构造高部位,其中须二段的CH148-CH137-GM3井区和GM2-CG561井区及须四段的GM2-CG561-GM4井区和CF563-CF175井区被预测为有利油气富集区。

关键词: 精细勘探, 须家河组, 致密砂岩气藏, 合兴场-丰谷地区, 川西坳陷

Abstract:

A set of fine exploration technologies had been developed and applied to improve exploration success rate in the tight sandstone gas reservoirs in the Upper Triassic Xujiahe Formation in Hexingchang-Fenggu area,western Sichuan Basin.Guided by geological understandings and based on seismic data,the technologies are employed to study the tight sand gas reservoirs through fine division and correlation of sand groups as well as integration of dynamic performance with static geological features.The gas reservoir characteristics were described and the main controlling factors were identified.Sweet spot prediction and well emplacement were carried out through strengthening seismic prediction,drilling tracing,testing layer selection as well as comprehensive geologi-cal study during stimulation.The success rate of exploratory drilling has been greatly improved through real-time modification of drilling program during drilling operation.Fine exploration of the Hexingchang-Fenggu area reveals that the gas reservoir has the characteristics of water-soluble gas.It can be classified as paleo-structural-lithological trap,with paleo-structural high controlling gas accumulations.Four play fairways were identified:the wellblocks of CH148-CH137-GM3 and GM2-CG561 with the second member of Xujiahe Fm as the target,and the wellblocks of GM2-CG561-GM4 and CF563-CF175 with the fourth member of the Formation as the target.

Key words: fine exploration, Xujiahe Formation, tight sand Stone gas reservoir, Hexingchang-Fenggu area, western Sichuan Basin

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