摘要
在地震储层预测过程中,需要借助岩石物理实验建立储层岩性、物性与地震弹性参数之间的关系,明确反演方法,从而提高储层预测精度.本研究针对高尚堡北区沙三5个亚段、10口井、四种岩性的27块岩心实施了宽频段地震岩石物理特征的实验研究.首先借助铸体薄片和X射线衍射分析得到所研究岩心的孔隙结构和矿物组分;接着对干燥和饱和流体状态下岩心进行高频岩石物理测试得到弹性参数;在此基础上,将测试结果经过计算得到15种地震属性,并基于敏感性分析获得对储层预测有指导意义的较为敏感的岩性、流体敏感因子.同时对孔渗性较好的储层岩石进行了低频岩石物理测量,不同饱和流体储层岩石展示了不同的地震波频散规律.砂岩宽频带的岩石物理实验结果对于研究储层与非储层具有指导和参考意义.
In the process of seismic reservoir prediction, it is necessary to establish the relationship among reservoir lithology,physical properties and seismic elasticity parameters by means of rock physics experiments. The above procedure is capable of optimizing the inversion method. In this work,we studied 27 rock samples from 10 wells of the five sub-sections of the Shahejie Formation. The pore structure and mineral composition were obtained by the analysis of the thin section and X-ray diffraction method,respectively. Elastic parameters of the rocks with different saturation conditions were measured at ultrasonic frequency. As a result,we are able to calculate 15 kinds of seismic attributes,and further to implement sensitivity analysis to obtain lithology indicator and fluid factors on the reservoir rocks. At the same time,we also carried out the low-frequency rock physical measurement for several reservoir rocks with high porosity and permeability. Different velocity dispersion behaviors under seismic frequency band can be observed for the samples under different saturated fluids. Multi-frequency rock physics experimental techniques on the reservoir are of significance for studying reservoirs property and guiding inversion method.
作者
邢文军
吴开龙
吴鑫
徐文会
龙腾
刘志军
熊彬
赵建国
XING Wen-jun;WU Kai-long;WU Xin;XU Wen-hui;LONG Teng;LIU Zhi-jun;XIONG Bin;ZHAO Jian-guo(PetroChina Jidong Oilfield Company,Hebei Tangshan 063004,China;China University of Petroleum（Beijing）,Beifing 102249,China;Guilin University of Technology,Guilin 541006,China)
出处
《地球物理学进展》
CSCD
北大核心
2018年第4期1609-1616,共8页
Progress in Geophysics
基金
国家自然科学基金项目(41574103
41274138
41674075)
中国石油大学(北京)优秀青年基金(KYJJ2012-05-02
ZX20150095)
油气重大专项(2016ZX05004-003)
广西自然科学基金项目(2016GXNSFGA380004)
广西高等学校高水平创新团队及卓越学者计划联合资助
关键词
储层敏感因子
岩心测试
岩石物理参数
低频岩石物理
reservoir sensitive factor
core test
rock physicsparameters
low frequency measurement
