高台子油田扶余油层沉积微相研究

发布时间：2018-03-10 03:39

  本文选题：扶余油层　切入点：储层预测　出处：《东北石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：高台子油田位于松辽盆地北部中央坳陷区大庆长垣南部,扶余油层在中生界白垩系泉头组四段地层内。本文在综合前人研究成果和研究区三维地震、测井和地质资料的基础上,运用高分辨率层序地层学、地震勘探学和储层沉积学等理论,系统开展了层序地层划分与对比、地震属性和储层反演预测、沉积微相展布、砂体分布特征等方面的研究。扶余油层为一套具较大水深变化幅度的、彼此间具成因联系的地层所组成的区域性湖进沉积。在层序地层研究基础上,井震结合将高台子油田扶余油层划分3个油层组、17个小层,完成了工区内109口井层序地层划分与对比,建立了全区的等时地层格架。采用了多属性以及高精度测井约束反演等多种储层预测方法,建立了一套以精细标定解释为基础,岩、电、震敏感性分析一体化的叠后定性一定量联合反演预测描述技术,能精细刻画砂岩的主要分布范围及规律。在区域沉积背景的基础上,根据岩心观察和测井相,结合地震剖面相和反射结构分析,确定了研究区发育典型的河控浅水河流-三角洲沉积体系,物源方向为齐齐哈尔水系,发育2类亚相(三角洲平原和三角洲前缘)和8个微相,以水上、水下分流河道微相最为发育,分流河道砂体是最有利的储集砂体。综合沉积特征和储层预测成果,从开发区以及区域砂体对比入手,对扶余油层河道砂体发育及连通特征进行了对比分析,最终落实各小层砂体发育展布特征。认为扶Ⅰ油层组中部和扶Ⅱ油层组的上部砂体非常发育,单层连通性较差,砂体的形态及展布控制了油层的平面分布。同时结合构造断层、开发试验数据等因素优选出四个有利河道砂区块,为进一步评价高台子油田扶余油层潜力、提交油气后备储量及开发部署提供了地质依据和有利保障。
[Abstract]:The Gaotaizi Oilfield is located in the south of Daqing Placanticline in the central depression of the northern Songliao Basin, and the Fuyu reservoir is in the fourth member of the Quantou formation of the Mesozoic Cretaceous system. Based on the theories of high-resolution sequence stratigraphy, seismic exploration and reservoir sedimentology, the sequence stratigraphic division and correlation, seismic attributes and reservoir inversion prediction, sedimentary microfacies distribution, etc. The Fuyu oil reservoir is a set of regional lacustrine sediments composed of strata with a large range of water depth changes and genetic relations with each other. Based on the study of sequence stratigraphy, Combined with well earthquakes, Fuyu reservoir in Gaotaizi Oilfield was divided into 3 reservoir groups and 17 small layers, and the sequence stratigraphy and correlation of 109 wells in the working area were completed. The isochronous stratigraphic framework of the whole area is established. A set of reservoir prediction methods, such as multi-attribute and high-precision logging constrained inversion, are established, which are based on fine calibration interpretation, rock, electricity, etc. The integrated post-stack qualitative prediction and prediction technique, which is integrated with seismic sensitivity analysis, can accurately describe the main distribution range and law of sandstone. On the basis of regional sedimentary background, according to core observation and logging facies, Based on the analysis of seismic profile facies and reflection structure, a typical fluvial delta sedimentary system of shallow river control in the study area has been determined, and the source direction is Qiqihar water system. Two subfacies (delta plain and delta front) and eight microfacies are developed. The microfacies of distributary channel on water and underwater are the most developed. The sand body of distributary channel is the most favorable reservoir sand body, which synthesizes the sedimentary characteristics and reservoir prediction results. Starting from the contrast of the development zone and the regional sand body, the development and connectivity characteristics of the channel sand body in Fuyu oil reservoir are compared and analyzed. Finally, it is considered that the sand bodies in the middle part of the Fu 鈪，

本文编号：1591634