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天然气地球科学

• 天然气地质学 • 上一篇    下一篇

川中地区雷口坡组风化壳岩溶作用研究

宋文燕，刘利清，甘学启，秦启荣，苏培东，范存辉   

  1. 1.重庆一三六地质队,重庆 渝北 401147; 2.中国石化西北油田分公司塔河采油三厂,新疆 轮台 841000; 3.斯伦贝谢中国公司,四川 成都 610041; 4.西南石油大学科技园，四川 成都 610500; 5.西南石油大学资源与环境学院，四川 成都 610500
  • 收稿日期:2012-02-03 修回日期:2012-06-15 出版日期:2012-12-10 发布日期:2012-12-10
  • 通讯作者: 宋文燕song_wenyan@126.com. E-mail:song_wenyan@126.com.
  • 作者简介:宋文燕(1985-)，女，四川遂宁人，助理工程师，硕士，主要从事岩溶、构造、矿产资源方面的研究.E-mail:song_wenyan@126.com.
  • 基金资助:

    四川省重点学科建设项目“矿产普查与勘探”(编号:SZD0414)资助.

Weathering Crust Karstification in Leikoupo Formation in Central Sichuan Area

SONG Wen-yan,LIU Li-qing,GAN Xue-qi,QIN Qi-rong,SU Pei-dong,FAN Cun-hui   

  1. 1.Chongqing Yisanliu Geoteam,Chonqing 401147,China;2.The 3rd Oil Production Company in Tahe Oil Field, SINOPIC, Luntai 841000,China;3.Schlumberger in China, Chengdu 610041,China; 4.Science and Technology Park of Southwest Petroleum University,Chengdu 610500,China; 5.Resources and Environment Institute of Southwest Petroleum University, Chengdu 610050,China
  • Received:2012-02-03 Revised:2012-06-15 Online:2012-12-10 Published:2012-12-10

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533

摘要：

通过考察川中地区8条优选的野外地质剖面，搞清雷口坡组顶面岩性特征、溶蚀孔缝发育情况、风化壳发育层位及发育厚度等。地层分析表明:川中雷口坡组地面露头岩性包括白云岩、溶塌角砾岩以及石灰岩;溶蚀孔洞发育，以半充填或未充填为主;在65m左右的岩溶作用深度范围内，岩溶作用改善了地层的岩性、孔隙空间、储渗性能，可形成良好的古风化壳储层。该认识对研究深埋于地下的雷口坡组顶部风化壳储层具有重要的借鉴意义，可为川中地区雷口坡组风化壳储层进一步的勘探开发提供地质依据。

关键词: 风化壳, 岩溶作用, 储层, 雷口坡组, 川中地区

Abstract:

Through the investigation of 8 preferred geological sections, the lithology, corrosion holes and fractures growth conditions, growth layer and thickness of the weathering crust in the top of Leikoup Formation have been determined.The stratum analysis suggests that the lithology of the Leikoupo outcrop are mainly dolomite, dissolution collapse breccia and limestone.The corrosion holes are developed, and dominated by half-filling or no filling.In the range of the karstification depth, about 65m, karstification improved lithology, pore space, storage and permeability.It forms a good reservoir of ancient weathering crust.The research provides an important reference for the study of deep underground weathering crust reservoir and can provide a basis for the geological exploration and development of Sichuan Leikoupo weathering crust reservoir.

Key words: Weathering crust, Karstification, Reservoir, Leikoupo Formation, Central Sichuan area

中图分类号: 

  • TE122.2

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