F油田沙三段页岩油储层物性分析与评价  

作　　者：洪鑫 康楠 李莹华 段凡 唐磊 何伟 王栩 

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津300452

出　　处：《科技创新与应用》2023年第7期81-85,共5页Technology Innovation and Application

基　　金：中海油科研平台建设项目(CNOOC-KJ PT GCJS 2016-01);中海油能源发展重大专项(E-J613D002)。

摘　　要：页岩的最大特征是物性较差、易破碎,这也是目前页岩石油开发的难题所在,而可靠的页岩孔隙度数值和渗透率值是评判页岩储层的品质及储量估算的关键参考。由于页岩油储层有效孔隙度和渗透率测量方法国内外无统一标准,所以针对同一页岩样品的天然物性不同方法检测结果会出现很大差别,为储层评估造成障碍。按照GB/T 29172—2012《岩心分析方法》标准开展页岩柱塞样品孔隙度检测,并采用碎样法和脉冲渗透率法对F油田页岩油储层进行有效孔隙度、总孔隙度和渗透率的检测,结合TOC、铸体薄片等结果,分析指出,柱塞样孔隙度通常代表连通孔隙的信息,而碎样孔隙度代表页岩总孔隙率的信息,而柱塞试样有效孔隙度与有机碳浓度呈现明显正相关性,不同实验方式检测孔隙度结果具有一定差别,碎样氦孔隙度和柱塞样氦孔隙度差异越大,体现页岩试样中孔隙发育程度更复杂。基于页岩油储层特征,得出室内实验物性结果差异对页岩油储层研究的影响。The most important feature of shale is its poor physical properties and fragility.This is also one of the difficulties in shale oil and gas exploitation.Effective shale porosity and permeability values are important parameters for evaluating the quality of shale reservoirs and calculating reserves.There is no domestic standard for the effective porosity and permeability measurement methods of shale oil reservoirs.Therefore,the measurement results of the physical properties of the same shale sample with different methods will have large differences,which will bring difficulties to reservoir evaluation.In accordance with GB/T29172—2012"Core Analysis Method"standard,the porosity of the shale plunger sample was measured,and the effective porosity,total porosity and permeability of the shale oil reservoir in the F oilfield were measured by the fragmentation method and the pulse permeability method.Combine the results of TOC,cast thin slices,etc.The analysis shows that the porosity of the plunger sample usually expresses the information of connected pores,while the porosity of the broken sample represents the information of the total porosity of the shale,and the effective porosity of the plunger sample is obviously positively correlated with the organic carbon content.There are certain differences in the results of porosity determination by different experimental methods.The larger the difference between the helium porosity of the crushed sample and the helium porosity of the plunger sample,it reflects the more complicated the degree of pore development in the shale sample.Based on the characteristics of this shale oil reservoir,the inspiration for the development of shale oil reservoirs from the difference in laboratory physical properties is obtained.

关 键 词：页岩 总孔隙度 有效孔隙度 脉冲渗透率 物性差异 

分 类 号：TE155[石油与天然气工程—油气勘探]