塔北隆起西段构造演化及其控油气作用

发布时间：2018-06-29 18:35

本文选题：塔北隆起西段 + 构造地层层序　；参考：《中国地质大学(北京)》2017年硕士论文

【摘要】：塔北隆起西段温宿-英买力一带,构造活动强烈,地层剥蚀严重,受限于地震资料品质,地震剖面解释方案不一,尚需进一步探讨;前人研究多聚焦于中、浅层序,对于深部构造认识较少,且目前前人的研究多数停留在定性的阶段,缺乏定量的分析。且由于塔北隆起多期次构造叠加的特性,不整合面可以指示一期构造活动,精确识别不整合面有助于确定其断裂成因机制,前人对这一方面的研究相对薄弱。本论文目的在于利用最新的2D地震、探井分层、测录井资料、地质图,分析塔北隆起西段地区的构造—地层层序,不整合面特征,断裂系统发育历史和分布特征;建立与北部山前带的几何学和运动学大剖面,重点分析喀拉玉尔滚构造(包括胜利十六场)、沙井子断裂构造、羊塔克-英买7构造的构造特征;在此基础上,讨论深部断裂活动对浅层的控制,利用平衡剖面法进行构造复原;最终分析塔北隆起西段结构和构造演化对油气聚集的控制作用,为油气勘探提供借鉴。在此基础之上,主要取得以下认识:(1)塔北隆起西段经历多期构造叠加,构造活动复杂,地层剥蚀情况十分严重,向北至库车地区,古生界二叠系、石炭系及泥盆系被大范围剥蚀。(2)沙井子断裂带具体由三条断裂组成,早期基底断裂活动造成古生界地层抬升,温宿凸起雏形形成,沙井子断裂在此基础之上冲断改造,形成现今构造面貌。(3)喀拉玉尔滚断裂带位于塔北隆起与库车坳陷的边界,具有明显的上下分层变形特征;下伏古生界发育的大型基底逆冲断层,具有明显多期活动的特征。(4)羊塔克-英买7断裂带同时发育有古近系及中寒武统的膏盐岩层,这两套滑脱面,很好的控制了该地区的构造变形,使之呈现盐上盐下分层变形的构造特征;(5)塔北隆起西段油气聚集具有海陆相油源交汇的特点,具备多套良好的生储盖配置;叠加构造对塔北隆起西段地区的油气聚集起到了重要的作用,通过对沙井子断裂带及羊塔克-英买力地区油气运聚模式的分析,不整合面和断裂是油气运移的主要通道,有效的沟通油源,利于油气的长距离输导。
[Abstract]:In the west section of the northern Tarim uplift, Wensu-Yingmaili area has strong tectonic activity, serious erosion, limited by the quality of seismic data, and different interpretation schemes of seismic profiles, which need to be further discussed. There is little understanding of the deep structure, and most of the previous studies are in the qualitative stage and lack of quantitative analysis. Because of the characteristics of multi-stage structural stacking in Tarim uplift, the unconformity surface can indicate the primary tectonic activity, and the accurate identification of the unconformity surface is helpful to determine the mechanism of its fault genesis, but the previous research on this aspect is relatively weak. The purpose of this paper is to analyze the tectonic-stratigraphic sequence, unconformable surface characteristics, history and distribution of fault system in the western segment of Tarim uplift by using the latest 2D earthquake, exploration well stratification, logging data and geological map. The geometry and kinematics profiles of the northern front belt are established, and the structural characteristics of the Karayuer rolling structure (including Shengli 16 fields), the Shajinzi fault structure and the Yangta-Yingmai 7 structure are analyzed. This paper discusses the control of deep fault activity on shallow strata and uses the balanced section method for structural restoration, and finally analyzes the controlling effect of structure and tectonic evolution on oil and gas accumulation in the western segment of Tarim uplift, which provides a reference for oil and gas exploration. On this basis, the following understandings are obtained: (1) the western segment of the northern Tarim uplift experienced multiple periods of structural superposition, complicated tectonic activity, serious erosion of strata, and Permian of Paleozoic to Kuqa region, northward to Kuqa area. The Carboniferous and Devonian systems were denudated on a large scale. (2) the Shajingzi fault zone was composed of three faults, and the early basement fault activities resulted in the uplift of Paleozoic strata and the formation of the embryonic form of the Wenshu uplift, on which the Shajingzi fault was thrust and reformed. (3) the Kalayuerroll fault zone is located at the boundary between the Tarim uplift and Kuqa depression, and has obvious upper and lower stratification deformation characteristics. (4) there are Paleogene and Middle Cambrian gypsum rocks in the Yangta-Yingmai 7 fault zone. These two sets of slip surfaces control the tectonic deformation of the area well. (5) the oil and gas accumulation in the western segment of the northern Tarim uplift is characterized by the confluence of marine and continental oil sources and multiple sets of good reservoir / cap configuration; The superimposed structure plays an important role in oil and gas accumulation in the western segment of Tarim uplift. Through the analysis of the oil and gas migration and accumulation models in the Shajingzi fault zone and the Yangtao-Yingmaili area, the unconformity surface and fault are the main channels for oil and gas migration. Effective communication of oil source, conducive to oil and gas long distance transportation.
【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】：2017
【分类号】：P618.13

【相似文献】