杨武寨构造带构造演化及断裂体系特征研究

发布时间：2018-06-25 01:08

本文选题：杨武寨构造带 + 地震解释　；参考：《中国地质大学(北京)》2015年硕士论文

【摘要】：杨武寨构造带位于冀中凹陷饶阳凹陷南部,该区构造复杂,具有进一步勘探评价研究的必要。本论文研究了杨武寨构造带构造演化及断裂体系特征。论文针对老油田目前构造研究存在的问题,充分利用已有资料,在前人研究的基础之上,主要通过全区重点井地层对比、精细三维地震解释、分析构造演化史,对断裂体系进行了研究,进一步理顺了断裂组合,总结出构造特征,为指导油田开发提供了基础。完成研究区内重点井地层划分对比,确定区域内两套一级标志层(Es1下底W型低阻泥岩段和Es3顶部的特殊岩性段),两个二级标志层(Es2顶“细脖子”泥岩段和Es3上高阻基值夹刺刀状的块状高阻特殊岩性段)及多个辅助标志层。通过多工区地震资料拼接,使用多工区地震资料分析研究区的区域构造背景和构造关系,分析构造形成机理:本研究区位于饶阳凹陷东南部,处于构造转换带,受周边三个不同应力方向的凸起所影响。东部的献县凸起地层北抬南降;西部的高阳深泽低凸起地层南抬北降;南部的新河凸起地层东抬西降;献县、高阳深泽两大凸起块体的拆离运动是饶南凹陷大型拆离滑覆构造形成的基本因素,本研究区属饶南凹陷大型拆离滑覆构造的南部;区内古近系、新近系的不同构造形迹是两大块体在第三纪时期拆离过程中的不同构造活动的产物。结合构造形成机理及断裂力学研究,使用多种地震属性对全区进行了精细三维地震解释,研究区内主要断层为献县断层、孙虎—杨武寨断层、留楚—皇甫村断层,剖面上主要发育“y”字型、“马尾状”、断阶型断层组合。平面上杨武寨地区东西向分异明显,可划分为三个构造区带,即杨武寨西部单斜带(北抬南倾),杨武寨中央背斜和杨武寨东洼槽东陡带。南北向又可划分为三个局部构造区:杨武寨主体背斜区、杨武寨北断鼻构造区、杨武寨南断鼻构造区。从断层活动的时序性分析,孙虎—杨武寨构造带的断裂发育具有多期性,共有三个期次的断裂发育。断层的发育期次与该区的构造运动密切相关。北部的杨武寨北断鼻构造区即为三期构造叠置区,断裂发育,构造破碎,为油气有利聚集区。
[Abstract]:Yangwuzhai structural belt is located in the south of Raoyang Sag, Jizhong Sag. The structural evolution and fault system characteristics of Yangwuzhai tectonic belt are studied in this paper. Aiming at the problems existing in the current structural research of the old oil fields, the paper makes full use of the existing data and, on the basis of previous studies, mainly analyzes the history of structural evolution by means of stratigraphic correlation of key wells in the whole area, fine three-dimensional seismic interpretation, and analysis of structural evolution history. The fault system is studied, the fault assemblage is further straightened out, and the structural characteristics are summed up, which provides the basis for guiding oil field development. Complete the stratigraphic division and correlation of key wells in the study area, Two sets of first-grade marker layers (the W-type low-resistivity mudstone segment at the bottom of Es1 and the special lithologic section at the top of Es3), two second-order marker layers (the "fine neck" mudstone section of Es2 and the bayonet shape of high resistivity base value on Es3) are determined. Segment) and multiple auxiliary marking layers. Based on the combination of seismic data in multi-work area, the authors analyze the regional tectonic background and tectonic relationship of the study area by using seismic data of multi-work area, and analyze the formation mechanism of the structure: the study area is located in the southeast of Raoyang sag, and is located in the structural transition zone. Affected by three different stress directions around the bulge. Xianxian uplift strata in the east carry south down; Gaoyang Shenze low uplift strata in the west lift north to the north; Xinhe uplift strata in the south lift west to the east; Xien County, The detachment movement of the two major uplift blocks in Shenze, Gaoyang, is the basic factor for the formation of large-scale detachment and slip structures in the Raonan Sag. The study area belongs to the southern part of the large-scale detachment and slip structure in the Raonan Sag and the Paleogene system in the area. The different tectonic traces of the Neogene are the product of different tectonic activities in the process of separation of the two blocks during the Tertiary period. Combined with the study of structural formation mechanism and fracture mechanics, the fine 3D seismic interpretation of the whole area is carried out by using various seismic attributes. The main faults in the study area are Xianxian fault, Sunhu-Yangwuzhai fault, Liuchu-Huangfu fault. There are mainly y-shaped, equine-shaped and faulted fault assemblages in the section. The east-west differentiation of Yangwuzhai area is obvious on the plane, which can be divided into three structural zones, namely, the western Yangwuzhai monocline (north to south tilting), the Yangwuzhai central anticline and the eastern steep belt of Yangwuzhai Dongwa trough. The south-north direction can be divided into three local tectonic areas: the main anticline in Yangwuzhai, the north fault nose structure in Yangwuzhai, and the south fault nose in Yangwuzhai. The fault development of Sunhu-Yangwuzhai tectonic belt is multi-period, and there are three stages of fault development. The development times of faults are closely related to the tectonic movement in this area. The north Yangwuzhai North faulted nose structure area is the third stage structure superposition area, the fault develops, the structure is broken, it is the favorable oil and gas accumulation area.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13;P548

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