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首页> 外文会议>SPE/ISRM rock mechanics conference (Oil Rock 2002) >Shale-Fluid Interactions Measured Under Simulated Downhole Conditions
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Shale-Fluid Interactions Measured Under Simulated Downhole Conditions

机译：在模拟井下条件下测量的页岩-流体相互作用

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摘要

Preserved shale samples, from four different shale cores, werernexposed to various fluids while under simulated downholernstress conditions. Prior to fluid exposure, the samples werernnot contacted by any aqueous fluid, including simulated porernfluid. Time-dependent measurements of pore pressure,rnswelling and acoustic velocities were made. Pore pressuresrnboth less than and greater than the applied fluid pressure werernobserved, and apparent osmotic membrane efficiencies arerncalculated. Swelling was found to depend not only on thernshale type and the fluid, but also on the level of confiningrnstress. Swelling anisotropy was observed. Acoustic velocitiesrnwere found to change as a result of fluid exposure, and thernamount of change is dependent on the fluid type and on thernexistence of swelling.
机译：在模拟下应力条件下，将来自四个不同页岩岩心的保存的页岩样品暴露于各种流体中。在流体暴露之前，样品不与任何含水流体接触，包括模拟的孔隙流体。进行了随时间变化的孔隙压力，溶胀和声速测量。观察到小于和大于施加的流体压力的孔压，并且计算出表观的渗透膜效率。发现膨胀不仅取决于页岩类型和流体，而且取决于围压水平。观察到膨胀各向异性。发现由于流体暴露，声速发生变化，并且变化的幅度取决于流体类型和溶胀的存在。

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