昌德地区“甜点”地震识别技术研究

发布时间：2018-07-31 20:59

【摘要】：地质对地震的需求主要有两方面:一是通过保幅和提高分辨率处理,大幅度提高地震纵向分辨率,提高地震沉积学河道砂体识别精度;二是在现有的储层预测基础上,建立多种储层反演预测方法,提高“甜点”的识别准确率,提高水平井深度预测精度和砂体钻遇率。松辽盆地北部石油剩余资源量的40%分布在扶杨油层,具有20亿吨的可探明资源量,具有着良好的勘探前景,是目前大庆油田勘探的主要领域。但是,在已经探明的储量中,有近8.5亿吨的储量难以动用。钻井证实:有效益的储量主要分布在河流—三角洲沉积体系中的河道砂体中,地震技术如何准确识别主体河道砂体的分布,是外围低渗透有效勘探、开发的重大需求。本项目研究目的是:针对三肇地区“甜点”识别各种地震地质难点与水平井钻探的技术需求,重点挖掘地震资料潜力,开展多项保幅高分辨率处理新技术研究,改善成像效果和薄储层识别能力;分析致密砂岩油藏“甜点”的岩性(储层沉积微相类型、厚度)、物性、含油性等性质特征关系,以河道砂体预测为核心问题,开展“甜点”识别与定量描述研究,全面支撑井位部署设计和钻探跟踪,保障三肇地区储量研究工作。
[Abstract]:The geological demand for earthquakes is mainly from two aspects: one is to greatly improve the longitudinal resolution of earthquakes and the recognition accuracy of seismic sedimentology channel sand bodies through preserving amplitude and improving the resolution processing; the other is based on the existing reservoir prediction. A variety of reservoir inversion and prediction methods are established to improve the recognition accuracy of "dessert", the prediction accuracy of horizontal well depth and the rate of sand body drilling. In the north of Songliao Basin, 40% of the remaining petroleum resources are distributed in Fuyang reservoir, with a proven resource amount of 2 billion tons, which has a good prospect of exploration and is the main field of exploration in Daqing Oilfield at present. But nearly 850 million tons of proven reserves are hard to use. The drilling proves that the effective reserves are mainly distributed in the channel sand bodies in the fluvial delta sedimentary system. How to accurately identify the distribution of the main channel sand bodies by seismic technique is an important requirement for the effective exploration and development of the peripheral low permeability. The purpose of this project is to identify the difficult points of seismic geology and the technical requirements of horizontal well drilling in Sanzhao area, to excavate the potential of seismic data, and to carry out many new techniques of amplitude preserving and high resolution processing. Improving imaging effect and identifying ability of thin reservoir, analyzing lithology (sedimentary microfacies type, thickness of reservoir), physical property, oil content and so on of dense sandstone reservoir, taking channel sand body prediction as the core problem, The research of "dessert" identification and quantitative description is carried out, the deployment design of supporting well location and drilling tracking are carried out, and the research work of reserves in Sanzhao area is guaranteed.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13;P631.4

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