【作者】 陈雷；

【导师】 朱玉双；

【作者基本信息】 西北大学 ， 石油与天然气工程， 2011， 硕士

【摘要】 安塞地区位于鄂尔多斯盆地陕北斜坡构造带。根据岩性、电性和含油性特征,将研究区长10油层组划分为长1011、长1012、长1013、长102、长103等5个小层。根据岩石类型及其特征、沉积结构、古生物特征以及测井相等相标志,采用相分析的方法,确定研究区长10油层为三角洲平原亚相,其中以分流河道砂体为最主要的沉积砂体。研究区长10油层岩石类型主要为长石砂岩和岩屑长石砂岩,孔隙类型以粒间孔为主,浊沸石溶孔次之,储层物性总体较好。通过对长10原油地球化学特征与长7和长9暗色泥岩对比,根据特征生物标志化合物,结合包裹体分布特征及长10已有出油井点与长7和长9暗色泥岩分布关系,综合判识长10油源主要为长9烃源岩。长10油藏受多种因素的控制,烃源岩控制着油藏的展布,异常高压为油气运移的主要动力,裂缝提供了石油向下运移的通道。长10主要发育构造-岩性油藏和岩性油藏两种类型。在以上研究的基础上,以有利沉积微相的砂体特征、物性特征和试油成果等参数,对长1011和长1012储集砂体进行预测和评价,共优选出1个现实建产区,4个勘探潜力区,2个远景目标区。更多还原

【Abstract】 Ansai area is located in Shanbei slope of Ordos Basin. According to the characters of lithology, electricity and oilness, the Chang 10 oil-bearing bed is subdivided into Chang 1011, Chang 1012, Chang 1013,Chang102and Chang 103.According to the analysis of the fades marks, such as lithology, sedimentary structure, fossils, logging facies and other marks in the study area, the analysis of the facies shows that the Chang 10 oil-bearing bed is delta plain. The main sedimentary microfacies is distributary channel.Feldspathic sandstones and debris feldspathic sandstones are the mainly reservoir sandstone of Chang 10 oil-bearing bed in the study area. The porosity is mainly the kind of intergranular pore and lomontite dissolved pore. Compare the geochemistry characteristics of Chang 10 crude oil and Chang 7,Chang 9 dark mudstone, according to the relation of biomarkers and inclusions distribution characteristics, consider that Chang 10 oil sources is Chang 9 source rock.Chang 10 oil poor is in controlled of many factors. The development of Chang 10 oil poor is in controlled of the source rock. Overpressure is the main power of Chang 10 oil-gas migration. Fracture gives the way of the oil-gas migration. The main types of Chang 10 oil poor are structure-lithological oil poor and lithological oil poor.On the base of the above research, used the favorable sedimentary microfacies sand body characteristic, property characteristic and oil test results and other parameters, predicted and evaluated Chang 1011 and Chang 1012 reservoir sand bodies, we were selected 1 practical construction area,4 potential exploration areas and 2 vision areas.更多还原