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| 利用核磁共振技术研究岩心含油饱和度恢复 | |
| 引用本文： | 李硕,郭和坤,刘卫,孙佃庆,李海波. 利用核磁共振技术研究岩心含油饱和度恢复[J]. 石油天然气学报, 2007, 29(2): 62-65 |
| 作者姓名： | 李硕 郭和坤 刘卫 孙佃庆 李海波 |
| 作者单位： | 中科院渗流流体力学研究所,河北,廊坊,065007;中科院渗流流体力学研究所,河北,廊坊,065007;中科院渗流流体力学研究所,河北,廊坊,065007;中科院渗流流体力学研究所,河北,廊坊,065007;中科院渗流流体力学研究所,河北,廊坊,065007 |
| 摘 要： | 在岩心核磁共振含油饱和度测量过程中,岩样从地下提取到地面的过程中由于压力释放等原因改变了岩样的地层原始状态,使得岩样中的流体有部分损失,造成测量饱和度的不准确.通过对样品的浸泡时间、弛豫试剂浓度的研究,确定了最佳浸泡时间及弛豫试剂浓度,引入了原油系数对损失油相信号进行修正,在国内外首次提出了核磁共振3次测量方法,建立了损失量与样品渗透率及样品含油饱和度实测值的关系,恢复后的含油饱和度更加接近储层真实值. |
| 关 键 词： | 核磁共振 含油饱和度 油气损失 含油饱和度恢复 |
| 文章编号： | 1000-9752（2007）02-0062-04 |
| 修稿时间： | 2007-01-10 |
Study on Oil Saturation Recovery on Cores by Using Nuclear Magnetic Resonance (NMR) |
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| LI Shuo,GUO He-kun,LIU Wei,SUN Dian-qing,LI Hai-bo. Study on Oil Saturation Recovery on Cores by Using Nuclear Magnetic Resonance (NMR)[J]. Journal of Oil and Gas Technology, 2007, 29(2): 62-65 | |
| Authors: | LI Shuo GUO He-kun LIU Wei SUN Dian-qing LI Hai-bo |
| Abstract: | In the process of saturation measurement on cores by using nuclear magnetic resonance(NMR).Its original state is changed due to pressure release.Therefore fluid saturated in core samples is patially lost and oil saturation can not be measured correctly by NMR.By studying the soak time,relaxation reagent concentration of the sample,optimal soak time and relaxation reagent concentration are determined.Crude oil coefficient is used to correct the signals of oil loss.A method of third measurement by NMR is first proposed.The relationship is established between oil loss quantity and permeability of core samples and as well as the measured valve of oil saturation.The oil saturation measured on ground is approaching to the measured valve of reservoirs. |
| Keywords: | NMR Oil saturation oil and gas loss recovery of oil saturation |
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