王府火山岩气藏储层及渗流特征研究
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中国科学院渗流流体力学研究所

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TE122

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国家重点基础研究发展计划(973计划)


The Studying on volcanic reservoir and percolation characteristics of Wangfu field
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The National Basic Research Program of China (973 Program)

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    摘要:

    针对王府火山岩气藏储层岩性复杂,气、水渗流规律认识不清的问题,利用X衍射、压汞、核磁共振、阈压梯度等实验技术,对王府火山岩气藏储层特征和单项气体、气水两项渗流规律进行了研究。结果表明,王府气田储层岩性主要为流纹岩、安山岩、火山角砾岩,属低孔致密储层,储集空间类型为孔缝型。火山岩岩心单相气体渗流时,1~2MPa是气体单项渗流流态发生转折的临界点,若以流量和压力平方梯度作为描述气体渗流曲线的坐标轴,其曲线特征以0.05×10-3μm2为界限分为2种渗流形态。含水火山岩岩心气体渗流时,当束缚水饱和度小于60%时,孔缝型岩样阈压梯度明显低于孔隙型岩样。

    Abstract:

    Aiming at the problem of Wangfu volcanic rock gas reservoir that the lithology is complex and gas-water percolation law is not clear, using the experimental techniques, such as X-ray diffraction, mercury injection, nuclear magnetic resonance (NMR), threshold pressure gradient,ect, to study volcanic rock reservoir characteristics and the percolation law of individual gas and gas-water two-phase in Wangfu gas field. The results show that Wangfu gas reservoir lithology is mainly for the rhyolite , andesite and volcanic breccia, which belongs to low porosity reservoir, whose reservoir space type is hole seam. When volcanic rock core is single-phase gas flow, the transition critical point of individual gas percolation flow state is 1~2 Mpa. If using the flow rate and gas flow pressure gradient as axis which describes gas flow curve, the curve features divides into two different percolation forms in the limit of 0.05 x 10-3μm2. When gas seepage in the volcanic rock core which is containing water and the irreducible water saturation is less than 60%, the threshold pressure gradient of the hole seam rock sample is significantly lower than the porous rock samples.

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引用本文

邵昭媛. 王府火山岩气藏储层及渗流特征研究[J]. 科学技术与工程, 2014, 14(22): .
shaozhaoyuan. The Studying on volcanic reservoir and percolation characteristics of Wangfu field[J]. Science Technology and Engineering,2014,14(22).

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  • 收稿日期:2014-03-02
  • 最后修改日期:2014-04-09
  • 录用日期:2014-04-16
  • 在线发布日期: 2014-08-15
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