吐哈油田鲁克沁东区梧桐沟组储层特征研究

发布时间：2018-11-11 12:41

【摘要】：针对鲁克沁东区储层梧桐沟组储层特征不明、研究程度不深这一问题,论文阐述了进行储层特征研究的方法与思路,并进行了系统的研究。研究分别进行了地层划分与对比,明确了梧桐沟组储层的层序特征,详细划分与对比了该区的地层层位;接着精细解释了地球物理数据,明确了鲁克沁东区的构造特征;然后进行了储层特征分析,从沉积特性、储集空间特性、油藏类型、四性关系等方面进行了系统阐述,明确了储层发育的主控因素;最后进行了储层参数建模研究,给出了储层参数建模方法与油层判别标准。研究结果表明:鲁克沁东区梧桐沟组以北西向断层为主,北东向断层为辅的断裂格局。地层总体向北西方向倾斜,东南部遭受剥蚀,形成构造-岩性(地层)、岩性圈闭。沉积环境为滨浅湖环境,主要发育扇三角洲前缘亚相,前缘亚相主要发育水下分流河道和分流河道间微相。储层岩性总体较粗,主要为砂砾岩、砾岩和细砂岩,鲁克沁东区梧桐沟组表现出较强的层内、层间和平面非均质性。梧桐沟组油层油源充足、构造有利、有效的油气运移通道和完美的生储盖组合是有利油藏发育的主控因素。梧桐沟组油层埋藏深度为中深层,跨度大,含油段长度小,单油层以中厚层、厚层为主,为-高孔、中-高渗油层,属于异常低温异常高压系统,为构造-岩性(地层)稠油油藏。论文研究的方法思路与形成的成果对鲁克沁地区的进一步勘探研究可以提供有利的技术保障。
[Abstract]:Aiming at the problem that the reservoir characteristics of Wutonggou formation in the eastern part of Lukeqin are not clear and the research degree is not deep, this paper expounds the methods and ideas of reservoir characteristics research, and makes a systematic study. The stratigraphic division and correlation are carried out, the sequence characteristics of the reservoir in the Wutonggou formation are defined, the stratigraphic positions in the area are divided and correlated in detail, and the geophysical data are explained in detail, and the structural characteristics of the eastern part of Lukeqin are clarified. Then, the reservoir characteristics are analyzed, including sedimentary characteristics, reservoir spatial characteristics, reservoir types, the relationship between four properties and so on, and the main controlling factors of reservoir development are defined. Finally, the reservoir parameter modeling method and reservoir discrimination standard are given. The results show that the fault pattern of the Wutonggou formation in the east of Lukeqin is mainly in the north west direction and supplemented by the north east direction fault. The strata generally incline northwestward and the southeastern part is eroded, forming tectonic-lithologic (stratigraphic) and lithologic traps. The sedimentary environment is littoral shallow lake environment, mainly developed fan delta front subfacies, front subfacies mainly developed underwater distributary channel and interdistributary channel microfacies. The reservoir lithology is generally coarser, mainly composed of sandy gravel, conglomerate and fine sandstone, and the Wutonggou formation in the eastern part of Lukeqin shows strong intralayer, interlayer and plane heterogeneity. The reservoir of the Wutonggou formation is abundant in oil source and favorable in structure. The effective migration channel of oil and gas and the perfect assemblage of reservoir and caprock are the main controlling factors for the development of the reservoir. The reservoir of the Wutonggou formation is of medium and deep depth, long span and small length of oil bearing section. The single oil layer is composed of medium thick layer and thick layer, which is composed of -high porosity, medium-high permeability oil layer, and belongs to abnormal low temperature and abnormal high pressure system. It is a structural-lithologic (stratigraphic) heavy oil reservoir. The methods and achievements of this paper can provide favorable technical support for further exploration in Lukeqin area.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

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