陆相湖盆浊积岩油藏特征和描述方法研究——以东营凹陷为例

【作者】 韩文功；

【导师】 陶明信； 周瑶琪； 杨云岭；

【作者基本信息】 中国科学院研究生院（兰州地质研究所） ， 地球化学， 2002， 博士

【摘要】 中国是一个以陆相含油气盆地为主的产油国，在陆相湖盆的沉积中心地区，广泛存在着以各类浊积砂体为主要储集体且储量相当丰富的砂岩岩性油藏，构成陆相含油气盆地的一大特色。由于浊积砂岩体的特殊隐蔽性，给浊积岩储层预测和描述带来了很大困难。因此，研究浊积岩储层的沉积特征和浊积岩油藏的描述方法对于浊积岩油藏的勘探开发具有重要的现实意义。 本文以东营凹陷中央隆起带史南地区为例，对浊积砂体的形成条件，沉积特征进行了深入研究，围绕浊积岩沉积规律、储层特征、物源方向、储层物性参数等进行了深入细致的分析总结，建立了区域基础地质模型和沉积微相模型，正确地确定砂体相带；通过地球物理基础工作建立地震与地质之间的桥梁，主要包括实验测定岩心岩石的弹性物性参数、地震剖面极性分析、建立速度模型，提高合成地震记录制作质量，使储层层位标定吻合率有明显提高；改进和发展测井约束反演技术，将测井、地震和地质三者连为一体，形成了薄层砂体测井约束反演预测方法和技术；通过测井评价方法研究，特别对低电阻率油藏形成机理和测井解释方法进行了分析；实现了单个浊积砂体的储量计算，储量参数计算精度得到提高，达到国家石油储量规范要求。研究形成了浊积砂体的精细描述方法，使砂体定量描述有较大改进，在研究区浊积岩油藏滚动勘探开发实践中取得了显著效果和效益。更多还原

【Abstract】 China is a petrobleum-production country mainly possess terrestrial petroliferous basin, in the depocenter of the terrestrial petroliferous basin, the sandstone lithologic oil pools that the primary reservoirs are variouskinds of turbibite sand bodies and have large amount of reserves distribute widely, and this is a chief character of the terrestrial petroliferous basin.For the special concealment of the turbidite sand bodies ,it isvery difficult to predict and describe the tubidite reservoirs. So, the study of the depositional character of the turbidites and the descriptive methods of the turbidite oil reservoirs has important real-life signifcance in the exploration development of the trubidite oil reserviors.This paper takes example for the Shinanregion in the cental uplift of the Dongying depression,made a thorough study on the form conditions and the depositional character of the turbidite sand bodies, carried through a detailed analysis and summarize around the tubidite depositional rule, reservoir character, source direction, reservoir physical parameters, etc. The regional basic geology model and microfacies model were established,and the sand bodies faciesbelte were confirmed correctly. The junction of the seismic and the geology were established through the basic geophysical work, mainly includes mensurating the coer rock elastic parameters by the expeiments,polar analy the seismic profite, establishing the velocity model,enhancing the execution quality of compound seismic log,so that the demarcate tally rate of the reservoir layers can be increased obviously.The log-restricted inversion technology were ameliorated either, the tog seismic and geology were comected so that form the forecast methods and technology of thin layer sandstone body log restricted.Through the study of log evaluation methods,especially the analysis of the form mechanism of low-resistance oil reservoir and the tag interpretation, the reserves calculation of single turbidite sandstone body realized,the calulative precisicn of the reserve parameters increased,achieved the mational petroleum criteria. This study has formed a fine descriptive method about the turbidite sandstone body,much improved the ration descriptions of the sandstone body, and acquired distinct effects and benefits in the progressive exploration and development of the turbidite oil reservoirs in research area更多还原