【作者】 赵强；

【导师】 孔凡群； 林承焰；

【作者基本信息】 中国石油大学 ， 矿产普查与勘探， 2010， 硕士

【摘要】 渤南油田五区位于渤南油田的东南部,主要含油层系为沙三段第6和第9砂组。由于研究区沙三段储层埋藏深度大,储层物性较差,非均质性严重,导致测井参数难以确定。本文在对研究区储层“四性”特征及其内在关系研究的基础上,建立了孔渗饱及泥质含量参数测井解释模型,确定了有效厚度划分标准,形成了一套适用的测井解释评价方法,对该油田的低渗透储层评价及开发具有重要意义。首先对研究区储层基本地质特征进行了深入的分析,对沙三段的地层发育特征、构造特征和沉积特征进行了研究,认为研究区沙三段地层多呈薄层细砂岩、粉砂岩与厚层泥岩互层沉积,主要发育有扇三角洲前缘亚相与浊积扇扇中亚相,储层多属于中孔低渗透,物性一般随埋藏深度的增加而变差。本论文重点分析了研究区的岩心、测井和试油试采资料,对沙三段储层岩性、物性、含油性及电性特征进行了深入研究,系统分析了研究区储层的“四性”关系。在此基础之上,结合研究区实际情况,分层位建立了泥质含量、孔隙度、渗透率及含油饱和度的测井解释模型,较准确的求取了泥质含量、孔隙度、渗透率及含油饱和度等储层物性参数,并利用岩心、试油资料对所建的解释模型进行了检验;根据研究区试油试采资料确定了有效厚度划分标准,同时分析了储层中存在的夹层的测井响应特征并进行了扣除。本文还对水淹层的测井曲线变化特征做了系统的分析,并根据这些特征实现了对研究区水淹层的定性解释。在认真研究分析研究区实际生产资料的基础上综合含水fw值、自然电位曲线和感应电导率曲线响应值建立了水淹级别的识别图板,并以此图板为标准,对研究区水淹层做了定量解释。利用测井解释参数集总的数据分析了储层参数空间分布特征,求取了层内渗透率非均质参数,最后根据灰关联分析理论对储层分小层进行了综合评价。更多还原

【Abstract】 The Fifth District is situated southeast of Bonan Oil Field,the central oil-bearing series is the sixth and ninth sand group of the Es3.The Es3 has the following characteristics: deep buried depth, bad physical property and complex pore texture, so it is difficult for computing log reservoir parameters. Therefore, analyzing reservoir four characteristics (lithology, physical property, oil-bearing property, electronic property characteristics) and their correlations, founding suitable clay content and porosity, permeability, oil saturation parameters log interpretation model, determining effective thickness interpretation standard, Establishing practicable log interpretation methods in the reservoirs is significant for the Bonan oil filed to develop effectively.Firstly,through the investigation of reservoir basic geological characteristics of the study region, stratigraphic characteristics, Structural characteristics and sedimentary characteristics are studied. Stratigraphic characteristics are mostly interbedded of thin packsand、siltstone and thick mudstone. The sedimentary facies is mainly delta front and turbidite fan subfacies. Many reservoirs are mediμm porosity and mediμm-low permeability, and with the increase of buried depth reservoir physical property become worse. This thesis focus on analyzing core section analysis data, well log data and testing oil data, deeply studying rsservoir lithology, physical property, oil-bearing property and electronic characteristics, systematically analyzing reservoir four property correlations. On this basis, combined the actual situation of the district, the study region is layering to establish suitable clay content and porosity, permeability, oil saturation parameters log interpretation model. and make use of core section analysis data and testing oil data verifying interpretation model. And again, effective thickness interpretation standard is determined according to testing oil data. And log response characteristics of the interlayer in the reservoirs are also analyzed and deducted. In accordance with the total data of log interpretation parameters, spatial distributed characteristics of reservoir parameters are analyzed. Permeability heterogeneity parameters in layer are calculated, and overall, permeability heterogeneity intensity in layer is mediμm, partly strong. This paper discuss the variation features of well logging curves corresponding to water flooded zone, and have a systematic analyse. And on the basis of characteristic, achieved quality interpretation of water-flooded zone in region of interest. Finally, it is suitable to make use of gray relational theory for comprehensive evaluation between layers.更多还原