海拉尔—塔木察格盆地原型特征与控油作用  

PROTOTYPE FEATURES AND THEIR CONTROLLING ACTIONS ON THE OIL IN HAILER-TAMUTSAG BASIN

作　　者：李春柏[1] 蒙启安[1] 朱德丰[1] 王凤来[2] 金镇龙[2] 陈均亮[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712 [2]大庆油田有限责任公司勘探事业部,黑龙江大庆163453

出　　处：《大庆石油地质与开发》2014年第5期138-146,共9页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家重大科技专项“大型油气田及煤层气开发”(2011ZX05001-001-004);中国石油天然气股份公司重大科技专项“大庆油田原油4000万吨持续稳产关键技术研究”(2011E-1202)

摘　　要：海拉尔—塔木察格盆地经历了多期建造与改造.基于新2D和3D地震、钻井与实验分析资料,采用原型识别、断裂构造变形解析技术,对盆地原型、演化进行了深入研究.认为盆地经历了晚侏罗世—早白垩世初期泛火山盆地、早期伸展断陷盆地、中晚期走滑盆地、抬升扭压变形转入晚白垩世坳陷盆地,末期构造反转变形及新生代构造运动的复杂构造演化历程,对油气成藏过程产生重要控制作用：南屯期低角度伸展断裂系统沿北东东向以相对分隔的箕状断陷型式广泛分布,控制着早期断陷沉积充填和烃源岩的赋存;伊敏期高角度走滑断裂系统沿北北东、北东向呈“S”形局部分布,决定了烃源岩的热演化程度和成熟范围;伊敏末期主成藏期也是早期构造定型和晚期构造形成期;伊敏期末及白垩世末构造反转,控油断层再活动调整形成次生油藏;先存南屯期主洼槽区及边缘的断裂隆起带和缓坡断阶带有利油气富集,稳定洼槽区易形成岩性油藏聚集带。Hailer-Tamutsag Basin has experienced a multi-phase construction and renovation.Based on the 2D and 3D seismic data,drilling data and experimental analysis reports,the prototype and evolution of the basin are studied by using prototype identifying and fault structure deforming analyzing techniques.The results show that the basin has experienced Late Jurassic-Early Cretaceous volcanic activities,early stretching rift,middle and late strike slip,uplift-transpressional deformation and Late Cretaceous depression,the later structural inversion and deformation and evolutional process of the complex structures in Cenozoic tectonic activities greatly affected the hydrocarbon accumulation：during Nantun period,low-angle extensional rift system was widely distributed along NEE direction as the form of the isolated half grabens,those faults control the deposition-compaction and evolution of the basin and occurrence of the source rocks; the high-angle strike-slip system in Yimin stage is distributed locally as ＂S＂ type in the NNE and NE directions,and moreover dominates the thermal evolved degree of the hydrocarbon source rocks and range of the source rock maturity ; in later period of Yiming Formation,the main hydrocarbon accumulation period was also the one of the earlier structure occurence and the later structure formation.Between later Yimin period and Late Cretaceous,the basin experienced the tectonic inversion,the oil-controlling faults reactivated and formed the secondary hydrocarbon reservoirs; at the stage of Nantun Formation,the hydrocarbon is prone to enrich in the main low,marginal uplift fault belts and gentle slope fault terrace zones,the lithologic oil pool belts are likely distributed in the stable lows.

关 键 词：海拉尔—塔木察格 原型盆地 断裂构造 油气规律 

分 类 号：TE122[石油与天然气工程—油气勘探]