摘要
鄂尔多斯盆地古隆起东侧奥陶系马家沟组膏盐岩下储层,由于其矿物多样、岩性复杂、物性差、裂缝较发育、孔隙结构复杂等原因导致储层参数计算精度低,难以满足生产需求。通过岩石物理实验分析,按照方解石-白云石、硬石膏-白云石、石盐-白云石等3种不同矿物组合进行储层分类,优化储层评价的测井敏感参数,分岩性建立了孔隙度计算模型。在此基础上开展孔隙空间结构研究,建立了不同孔隙类型的渗透率计算模型;分孔隙型、裂缝型、致密层状3种类型建立了饱和度模型。实际应用表明,储层参数计算精度明显提高。
The reservoir under gypsum salt rock of Majiagou formation of Ordovician in the east of Ordos basin paleo-uplift,due to its mineral diversity,complex lithology,poor physical properties,relatively developed fractures,complex pore structure and other reasons,the calculation accuracy of reservoir parameters is low,which is difficult to meet the production demand.Through the analysis of petrophysical experiments,the reservoir is classified according to three different mineral assemblages such as dolomite calcite assemblage,dolomite anhydrite assemblage,dolomite halite assemblage,the logging sensitive parameters of reservoir evaluation are optimized,and the porosity calculation model is established by lithology.On this basis,the pore space structure is studied,and the permeability calculation models of different pore types are established.The saturation model is established in three types:pore type,fracture type and tight bedded type.The practical application results show that the calculation accuracy of reservoir parameters is obviously improved.
作者
文晓峰
罗菊兰
牛林林
罗红梅
付浩
朱春红
WEN Xiaofeng;LUO Julan;NIU Linlin;LUO Hongmei;FU Hao;ZHU Chunhong(Changqing Branch,China National Logging Corporation,Xi’an,Shaanxi 710200,China)
出处
《测井技术》
CAS
2021年第6期630-635,656,共7页
Well Logging Technology
基金
中国石油集团测井有限公司科研项目“碳酸盐岩双孔介质储层评价方法研究”(CPL2018-B05)。
关键词
测井解释
膏盐岩
碳酸盐岩
储层特征
孔隙结构
岩石物理实验
解释模型
鄂尔多斯盆地
log interpretation
gypsum salt rock
carbonate rock
reservoir characteristics
pore structure
petrophysical experiment
interpretation model
Ordos basin
