岩芯分析

2019/07/31   下载量： 0 次

方案摘要

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应用领域 地矿
检测样本 非金属矿产
检测项目
参考标准 无

A detailed measurement of porosity, connectivity and fluid content is fundamental to the evaluation of a rock’s reservoir potential.

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A detailed measurement of porosity, connectivity and fluid content is fundamental to the evaluation of a rock’s reservoir potential. Nuclear magnetic resonance (NMR) has for a long time been used in chemistry, physics and in clinical diagnosis, but has also been quickly taken up by the petroleum industry. A key advantage of NMR over more conventional logging techniques is that it is not so strongly affected by the mineralogy, but responds primarily to the presence of Hydrogen in pore fluids. Therefore it is an effective tool for measuring the volume, composition and distribution of key fluids in the rock, namely oil, gas and water. However, NMR has extensive capabilities and the latest GeoSpec NMR systems from Oxford Instruments and Green Imaging Technologies can quickly and accurately determine a host of other key parameters, such as the clay bound water (CBW), Free Fluid Index (FFI) and Bound Volume Irreducible (BVI). With the recent shift towards oil and gas exploration in shales, NMR analyses have become more challenging due to the lower porosity and significantly smaller pore size compared to sandstones. However, software and hardware developments have increased both sensitivity and resolution, and have resulted in the GeoSpec range becoming the petroleum industry standard for routine NMR core analyses.

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牛津仪器科技（上海）有限公司
白金会员 丨 第23年
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