储层砂岩岩石力学性质与地层条件的关系研究
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摘要
利用ＭＴＳ公司生产的地层条件下岩石物理参数综合测试系统对陕甘宁盆地西南部埋藏深度１４００～１７００ｍ三叠系延长组储层砂岩进行了模拟地层条件（包括地层围压、加温、饱水及改变样品方向等）的岩石力学性质测试，获得了该地区延长组储层砂岩在不同围压条件下的弹性模量、泊松比和抗压强度。求得了地层条件下不同钻井、不同方向样品的弹性模量、泊松比和抗压强度、围压之间的关系；对比了饱水和不饱水条件下的这些岩石力学性质的差别。为该地区储层砂岩地层条件下岩石力学性质的研究提供了一些基本参数
The mechanical parameters of sandstone are measured using rock physical parameter automatic testing system, made by MTS Corporation.The sandstone samples, with current burying depth of 1400 1700m, are collected from Yanchang Formation, Triassic, southwest of Shaanganning Basin. The testing formation conditions simulated include confining pressure, temperature, saturated by water, and change of the direction of samples. By means of the measurement, the poissons ratio, elastic modules and compressive strength of this stratum and this region under different formation conditions are obtained. The relatonship between confining pressure and elastic modules, poissons radio and compressive strength of the rocks in different directions and from different wells are also abtained. The mechanical parameters of samples saturated by water are compared with those of airdried samples, providing some basic parameters under formation conditions for this region.
The mechanical parameters of sandstone are measured using rock physical parameter automatic testing system, made by MTS Corporation.The sandstone samples, with current burying depth of 1400 1700m, are collected from Yanchang Formation, Triassic, southwest of Shaanganning Basin. The testing formation conditions simulated include confining pressure, temperature, saturated by water, and change of the direction of samples. By means of the measurement, the poissons ratio, elastic modules and compressive strength of this stratum and this region under different formation conditions are obtained. The relatonship between confining pressure and elastic modules, poissons radio and compressive strength of the rocks in different directions and from different wells are also abtained. The mechanical parameters of samples saturated by water are compared with those of airdried samples, providing some basic parameters under formation conditions for this region.
引文
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