石油与天然气地质 ›› 2003, Vol. 24 ›› Issue (1): 28-31.doi: 10.11743/ogg20030106

• 油气空间 • 上一篇    下一篇

松辽盆地北部深层火山岩储层特征

刘万洙1, 王璞珺1, 门广田2, 边伟华1, 尹秀珍1, 许利群2   

  1. 1. 吉林大学地球科学学院, 吉林长春, 130061;
    2. 大庆油田有限责任公司勘探开发研究院, 黑龙江大庆, 163712
  • 收稿日期:2002-04-16 出版日期:2003-03-25 发布日期:2012-01-16
  • 基金资助:

    国家自然科学基金资助课题(NSFC)49894190-12号“大庆目标区火山喷发岩储层建模机制分析及数学表达”

CHARACTERISTICS OF DEEP VOLCANIC RESERVOIRS IN NORTHERN SONGLI AO BASIN

Liu Wanzhu1, Wang Pujun1, Men Guangtian2, Bian Weihua1, Yin Xiuzhen1, Xu Liqun2   

  1. 1. College of Earth Sciences, Jilin University, Changchun, Jilin;
    2. Daqing Institute of Exploration & Development, Daqing, Heilongjiang
  • Received:2002-04-16 Online:2003-03-25 Published:2012-01-16

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摘要：

松辽盆地北部深层的火山岩储层主要分布于徐家围子断陷的火石岭组和营城组,其爆发相和溢流相火山岩储集性能较好,孔隙度一般为6.3%～10.8%,渗透率为0.55×10-3～122.0×10-3μm2。火山岩的储集性能主要受构造作用、溶蚀作用及流体活动的影响。松辽盆地火山-断陷期的构造活动致使火山岩产生大量次生裂缝,储集性能提高;淋滤作用主要改造爆发相凝灰质熔岩,使其变得极为疏松,孔隙度提高到15%以上。流体活动对火山岩储集性的改造具有双重作用:一方面新矿物的胶结和充填使得储集性能下降;另一方面,蚀变和溶解作用又可使孔隙度增加。因此,应分期次进行研究。

关键词: 火山岩, 储层, 岩相, 影响因素, 松辽盆地

Abstract:

Deep volcanic reservoirs of Songliao basin have mainly been found in Huoshiling and Yingcheng Fms..The eruptive and overflow facies have better reservoir capacity, commonly with the porosity of 6.3%～10.8% and permeability of about 0.55×10-3 ～122.0×10-3 μm2.The reservoir capacity of volcanic rocks has largely been affected by tectonism,solution and fluid activity.There are lots of fractures in volcanic rock due to tectonic activity during the volcanic-fault-depression period in Songliao basin,which would enhance the reservoir capacity.The eruptive tuffaceous volcanic has been mainly changed by leaching, and become loose and porous,with the porosity to be increased to over 15%.Fluid flow has double effects on reservoir capacity of volcanic rock, reservoir capacity would be reduced by cementation and filling of new minerals,but on the other hand, porosity would be increased by alteration and solution.These should,therefore, be studied separately by stages and periods.

Key words: volcanic rock, reservoir, volcanic facies, affecting factors, Songliao basin

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