波谱学杂志Issue(3)：489-498,10.DOI:10.11938/cjmr20150310
基于低场核磁共振技术的储层可动油饱和度测试新方法
Measuring Movable Oil Saturation in Reservoirs with Low-Field NMR Technology
周尚文 1薛华庆 2郭伟 3李晓波 1修伟2
作者信息
- 1. 中国石油勘探开发研究院廊坊分院，河北廊坊 065007
- 2. 中国石油非常规油气重点实验室，河北廊坊 065007
- 3. 国家能源页岩气研发 实验 中心，河北廊坊 065007
- 折叠
摘要
Abstract
Movable oil saturation is an important parameter to consider when evaluating movable reserves. Adapted for the method to measure movable fluid saturation, a new low-field NMR method to measure movable oil saturation was developed, and demonstrated through oil-driving-water and water-driving-oil centrifuge experiments. Experiments were conducted on 24 samples from Maling oilfield. The results indicated that the reasonable centrifugal forces for low-permeability sandstone in oil-driving-water and water-driving-oil experiments were 2.28 and 0.22 MPa, respectively. The movable oil saturation was measured between 17.06% and 60.49%, and the average was 41.95%. The movable oil saturation was primarily determined by throat with a size of 0.5μm, and the volume of movable oil increased with the throat radius. The correlation coefficient between movable oil saturation and permeability was found to be 0.845, higher than the correlation coefficient between movable oil saturation and porosity. The results of these agreed well with the actuality of the formation. It is concluded that the new method for measuring movable oil saturation is valid and practical, and represents significant improvement over the conventional approach.关键词
核磁共振(NMR)/可动油饱和度/最佳离心力/油驱水/水驱油Key words
NMR/movable oil saturation/optimum centrifugal force/oil-driving-water/water-driving-oil分类
能源科技引用本文复制引用
周尚文,薛华庆,郭伟,李晓波,修伟..基于低场核磁共振技术的储层可动油饱和度测试新方法[J].波谱学杂志,2015,(3):489-498,10.
