塔北哈拉哈塘地区奥陶系碳酸盐岩岩溶层组特征与溶蚀强度分析

淡永; 梁彬; 曹建文; 张庆玉; 郝彦珍; 李景瑞

doi:10.11781/sysydz201505582

塔北哈拉哈塘地区奥陶系碳酸盐岩岩溶层组特征与溶蚀强度分析

doi: 10.11781/sysydz201505582

淡永^1,2,
梁彬^2,3,
曹建文^2,3,
张庆玉^2,3,
郝彦珍^2,3,
李景瑞^2,3

1.
成都理工大学沉积地质研究院, 成都 610059
2. 中国地质科学院岩溶地质研究所, 广西桂林 541004
3. 国土资源部/广西壮族自治区岩溶动力学重点实验室, 广西桂林 541004

基金项目: 国家自然基金青年基金(41302122)、国家重点基础研究发展计划(973计划)(2011CB201001)、国土资源部公益性行业科研专项(201211082)和"广西自然科学基金(2015GXNSFBA139187)"资助。

详细信息

作者简介:
淡永(1986—),男,在职博士,助理研究员,从事沉积地质及古岩溶油气地质研究。E-mail:danyong@karst.ac.cn。

中图分类号: TE122.2
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- 被引次数: 0
出版历程
- 收稿日期: 2014-11-24
- 修回日期: 2015-07-30
- 刊出日期: 2015-09-28

Characteristics and solution intensity of karst formations in Ordovician carbonates in the Halahatang area of the northern Tarim Basin

1.
Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu, Sichuan 610059, China
2. Institute of Karst Geology, Chinese Academy of Geological Sciences, Guilin, Guangxi 541004, China
3. Karst Dynamics Laboratory, Ministry of Land Resources/Guangxi Zhuangzu Autonomous Region, Guilin, Guangxi 541004, China

摘要

摘要: 塔北哈拉哈塘地区奥陶系多个层位均发育岩溶缝洞型储层。对钻井岩心系统采样测试分析,总结了哈拉哈塘地区不同地层的岩石类型及其纵向组合发育特征。不同类型碳酸盐岩溶蚀试验研究发现,泥质含量及MgO含量对岩石可溶性具有影响,溶蚀强度为纯颗粒石灰岩 > >白云质灰岩 >白云岩 >泥灰岩。以此为基础进行层组划分,将奥陶系碳酸盐岩划分为2类3型5个亚型:一间房组及鹰一、二段为灰岩连续型层组,属强岩溶层组;良一段,鹰三、四段为灰岩夹云岩亚型,岩溶强度属中等;其余各层组溶蚀性较弱。实际钻井结果及地震剖面"串珠"发育情况统计认为,该区岩溶层组类型控制了缝洞型储层的发育。
- 溶蚀强度 /
- 溶蚀试验 /
- 古岩溶 /
- 缝洞型储层 /
- 奥陶系 /
- 哈拉哈塘地区 /
- 塔里木盆地
Abstract: Fractured and vuggy reservoirs were found in several Ordovician carbonate formations in the Halahatang area of the northern Tarim Basin.The lithology of different formations and their vertical distribution were studied based on microscopic observations and geochemical testing of core samples.Dissolution tests of different types of carbonates showed that the contents of argillaceous matter and MgO could influence carbonate solubility.The intensity of dissolution decreased from pure limestones, dolomitic limestones, dolomites to muddy limestones.The Ordovician carbonates were classified into two classes, three types and five subtypes.The Yijianfang Formation and the first and second members of the Yingshan Formation are continuous limestones with strong karstification.The first member of the Lianglitage Formation and the third and fourth members of the Yingshan Formation are dolomitic limestones with medium karstification.The other formations were weakly karstified.Drilling results and the presence of "stringed beads" on seismic profiles indicated that the types of karst formation controlled the development of fractured and vuggy reservoirs.
- solution intensity /
- solution test /
- paleokarst /
- fractured and vuggy reservoir /
- Ordovician /
- Halahatang area /
- Tarim Basin

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参考文献(21)

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