一维、二维核磁共振测井在东海低渗储层评价中的应用

Application of 1D and 2D Nuclear Magnetism Logging to Assessment of Low Permeability Reservoir in the East China Sea Basin

王猛

WANG Meng

中海油田服务股份有限公司, 河北燕郊 065201

China Oil Field Service Limited, Yanjiao Hebei 065201, China

此文介绍了一维、二维核磁共振测井仪器工作原理和技术特点。论述了在低渗储层孔隙中同时存在气和水时，一维核磁共振测井判别流体性质存在多解性，二维核磁共振测井仪器能够提供横向、纵向驰豫时间、扩散系数等核磁共振信息，并且二维核磁通过多种探测深度的综合对比，可以更加准确的对储层流体性质进行识别。对东海某气田低渗储层一维、二维核磁共振资料的应用实例进行了分析，其解释结果与DST测试结论一致。

The working principles of one-dimensional and two-dimensional nuclear magnetism logging equipment and the characteristics of this technology are introduced in this paper. The recognition of the liquid type by one-dimensional nuclear magnetism logging remains uncertain when water and gas coexist in the low permeability reservoir. However, the two-dimensional nuclear magnetism logging can provide nuclear magnetic resonance information, such as the horizontal and vertical relaxation time, diffusion coefficient. Through comparing the parameters recorded at the same point with different investigation depth, the liquid type can be recognized precisely. Analysis has been conducted on the examples of liquid recognition results in the low permeability reservoir in East China Sea basin by the one-dimensional and two-dimensional nuclear magnetism logging, and the analyzing results are accorded with the DST testing results.

中国海洋石油总公司“十二五”重大科技专项“中国近海低孔低渗油气藏勘探开发关键技术与实践（CNOOC-KJ125ZDXM07LTD）”部分研究成果。

https://doi.org/10.3969/j.issn.1008-2336.2017.01.075