核磁共振录井技术在欢采齐40块储层评价中的应用

发布时间：2018-03-17 17:09

本文选题：核磁共振　切入点：孔隙度　出处：《东北石油大学》2017年硕士论文　论文类型：学位论文

【摘要】：核磁共振技术自20世纪90年代进入石油测井领域。它为解决石油工业油气勘探和开发中存在的许多问题提供了新的解决方案。核磁共振分析是利用氢原子核在外加磁场作用下形成核磁共振现象这一特性,测量同一样品在不同处理阶段的核磁共振信号,从而得出储层的孔隙度、渗透率、含油饱和度、可动流体饱和度等地质参数的一项新的录井技术。2004年辽河油田录井公司把核磁共振测井方法移植到录井领域,实现了岩石物性分析从室内到钻井现场的迁移,具有简便、快速、对样品大小要求低、获取参数多、准确性高等优点。在划分和评价有效储层、指导现场钻进方面提供了详实的储集层物性参数,为辽河油田勘探和开发的决策发挥了重要作用。本文利用分析色谱图和T2弛豫谱图,选择辽河油田齐40块具有代表性的4个实例,在分析储集层物性特征的基础上,定性、定量的评价了该区的储层性质。并根据齐40块22口井的孔隙度、渗透率和含油饱和度数据绘制交会图,在直角坐标系中拟合散点图,建立了齐40块产层评价的解释图版和解释标准,并划定油层、气层、水淹层的区间范围,能够应用于今后齐40块的油井勘探中。最后,查阅测井资料,将核磁共振测量的孔隙度、渗透率、含油饱和度数据及所得出的解释结论与测井解释成果表中的数据及结论相比较,吻合度很高,证实了核磁共振技术的准确性。
[Abstract]:Nuclear magnetic resonance (NMR) technology has entered the field of petroleum logging since 1990s. It provides a new solution for solving many problems existing in oil and gas exploration and development in petroleum industry. Nuclear magnetic resonance analysis (NMR) is based on the use of hydrogen atomic nuclei. The phenomenon of nuclear magnetic resonance is formed under the action of magnetic field. The nuclear magnetic resonance (NMR) signals of the same sample at different processing stages were measured, and the porosity, permeability and oil saturation of the reservoir were obtained. In 2004, the logging company of Liaohe Oilfield transplanted the nuclear magnetic resonance logging method to the mud logging field, which realized the migration of the rock physical property analysis from the indoor to the drilling site. It has the advantages of low sample size, high accuracy and so on. It provides detailed physical parameters of reservoir in classifying and evaluating effective reservoir and guiding drilling on site. It plays an important role in the decision-making of exploration and development in Liaohe Oilfield. In this paper, four typical examples of Q40 block in Liaohe Oilfield are selected by using the analytical chromatogram and T2 relaxation spectrum. On the basis of analyzing the physical characteristics of reservoir, qualitative analysis is made. The reservoir properties in this area are quantitatively evaluated. Based on the porosity, permeability and oil saturation data of 22 wells in Block Qi 40, the cross plot is drawn, and the scattered plot is fitted in the right angle coordinate system. The interpretation chart and interpretation standard of production evaluation in Block Qi 40 are established, and the interval range of oil, gas and water flooded zones is delimited, which can be applied to the exploration of oil wells in Block Qi 40 in the future. Finally, the logging data are consulted. Comparing the porosity, permeability and oil saturation data measured by nuclear magnetic resonance (NMR) with the data and conclusions in log interpretation table, the accuracy of nuclear magnetic resonance (NMR) technique is verified.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE142;P618.13

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