B38断块精细油藏描述

发布时间：2018-03-19 03:35

本文选题：复杂断块　切入点：精细油藏描述　出处：《燕山大学》2015年硕士论文　论文类型：学位论文

【摘要】：B38断块是近几年华北油田的重点勘探区域,也是油藏评价上报探明储量和产能建设的重点区块。通过近几年的勘探开发实践表明,B38断块构造破碎、储层纵横向变化大,属于复杂断块油藏。由于复杂断块油藏具有断层数量多,断块规模小,构造面貌破碎的特点,传统的油藏描述方法和精度远不能满足这个阶段的开发要求。本文以B38复杂断块为例,采用精细油藏描述为主要研究方法。在细分单砂层的基础上,使用了多种学科理论与技术,例如现代地层学、沉积相研究技术、储层砂体描述技术、相控建模技术及油藏潜力分析技术等。针对B38复杂断层油藏的地质特征、开发现状及存在的问题,多学科结合,对研究区储层进行了深入细致的分析研究。在已有认识的基础上,对研究区重新划分了地层,在目标层段确定了26个单砂层。本次论文的研究,建立在单砂层的基础上,在分析了区域沉积背景的前提下,根据沉积相标志,对沉积微相的类型及特征进行了分析研究。同时,对储层基本物性、孔隙结构特征及油藏分布特征进行了详细的分析,利用容积法计算了B38断块的地质储量。根据储层基本特征的研究成果,借助专业的地质建模软件,合理地处理了复杂断层的连接关系。以沉积相作为控制条件,进行随机建模,建立了B38断块的静态三维地质模型,使储集层得到了更清晰直观的认识。最终,针对目前开发现状及问题,进行了油藏潜力分析与评价,并提出了提高挖潜能力的建议方案。
[Abstract]:B38 fault block is a key exploration area in Huabei Oilfield in recent years, and it is also a key block for reservoir evaluation to report proven reserves and productivity construction. Through the exploration and development practice in recent years, it is shown that the fault block Guanb38 has broken structure and changed greatly in vertical and horizontal direction. Because of the large number of faults, the small scale of fault blocks and the fragmentation of structural features, the complex fault-block reservoirs are characterized by large number of faults, small size of fault blocks, and fragmentation of structural features. The traditional reservoir description method and precision can not meet the requirements of this stage of development. This paper takes B38 complex fault block as an example and uses fine reservoir description as the main research method. Various theories and techniques are used, such as modern stratigraphy, sedimentary facies research, reservoir sand body description, facies control modeling and reservoir potential analysis, etc. The geological characteristics of B38 complex fault reservoir are analyzed. The present situation of development and the existing problems are analyzed and studied deeply and meticulously in the reservoir of the study area. On the basis of the existing knowledge, the strata of the study area are reclassified. 26 single sand layers have been determined in the target formation. Based on the single sand layer and the analysis of the regional sedimentary background, this paper is based on the sedimentary facies. The types and characteristics of sedimentary microfacies are analyzed. At the same time, the basic physical properties, pore structure characteristics and reservoir distribution characteristics are analyzed in detail. The geological reserves of B38 fault block are calculated by volume method. According to the research results of basic reservoir characteristics and with the help of professional geological modeling software, the connection relationship of complex faults is reasonably handled. The sedimentary facies is used as the control condition for stochastic modeling. The static 3D geological model of B38 fault block is established, which makes the reservoir know more clearly and intuitively. Finally, according to the present development situation and problems, the reservoir potential analysis and evaluation are carried out, and the proposal to improve the potential tapping ability is put forward.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

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