子北油田位于鄂尔多斯盆地东部二级构造单元—陕北斜坡上，面积约为25×104km2。毛家河油区油藏储层为上三叠统延长组的长6油层组。长6储层主要发育岩性圈闭油藏，砂体发育，主要为中—细粒长石砂岩，物性很差，以低孔、低渗为主，储层孔隙结构、岩性及物性的非均质性以及油气、水复杂多变的分布规律导致复杂多变的测井响应和测井结果，给孔隙度、渗透率、饱和度等测井储层参数研究带来极大的困难。因此，通过测井手段正确评价储层，制定一套适合目的层段储层的测井评价标准和解释方法，对油田可持续发展提供依据有着重大的意义。 本文从基本地质条件出发，利用岩心观察、试油试采资料、铸体薄片等各种储层研究的实验和技术，对该地区长6油层组基本地质特征等进行了研究，进而将毛家河油区长6油层组划分为61、62、63、64四个亚组，分析得出长6油层主要沉积相为三角洲沉积，发育三角洲平原亚相，微相类型为水上分流河道、河道侧缘以及分流间洼。其中水上分流河道沉积的砂体是长6油层的主要储集体。在此基础上，应用测井资料结合基础地质资料，系统分析重点井的岩性、物性及含油性的测井响应特征，详细研究了储层的含油性、岩性、物性和电性，并对储层的“四性”关系进行了测井评价，建立了储层参数测井解释模型，解释精度较高，可满足储层参数计算要求。应用建立的孔隙度、渗透率解释模型对关键井以外的取心井进行处理，效果很好，处理结果与岩心分析结果匹配的很好，论文研究的孔隙度、渗透率模型为研究区测井解释及储层评价提供了可靠的理论依据。

Zibei oilfield is located in the secondary structural units on the North Shanxi Slope in the eastern of Ordos Basin, this oilfield is about 25×104km2. The main oil-bearing reservoir contains the Triassic Yanchang Formation Chang 6 reservoir. Lithologic traps of reservoir mainly development on Chang 6 reservoir, development of sand body, mainly the-fine-grained feldspathic sandstone, physical is poor, it mainly based of low porosity and low permeability, complex of pore structure and heterogeneity of property led to the complexed logging response and logging results, these problems makes difficulties in the research about logging parameters of porosity, permeability and saturation. Therefore，the paper applies logging measures to evaluate reservoir correctly and constitutes a suit of logging evaluation standard and interpretation method which is suitable for targeted reservoir, in order to provide evidence for sustainable development of oilfleld. This paper started the research from basic geological conditions, with the core observation, cast thin section, scanning electron microscopy, mercury injection analysis study of a variety of experiments and reservoir technology. According to the foundation of research about these basic geological features etc for Chang6 oil layer in this area, and then the Chang6 reservoir is divided into four subgroups of 61, 62, 63 and 64, mainly sedimentary facies of Chang6 reservoir is deltaic deposit obtained by analyzing, the type of sedimentary micro-facies is upperwater distributary channel, and its lateral margin, inter-channel depressions, the upperwater distributary channel sand body is the main reservoir of the chang 6 reservoir. On this basis, the paper makes the systemic analysis of lithology, physical properties and oil characteristics of the log response for the key wells, do a detailed study to the oiliness, characters of lithology, physical properties and electricity of the reservoir, and made the logging evaluation of 4-property relationship of the reservoir, established the logging interpretation model of reservoir parameters. Interpretation is accuracy and accord with request plate. Application of the above achievements to the well which is beyond the key well, the result is very well. The results matched the core analysis results well. The achievements can provide more accurate theory for the logging interpretation and reservoir evaluation in this region.