同生断裂传递带控砂研究--以海拉尔盆地乌尔逊-贝尔凹陷为例  

Study of the syngenetic fracture transfer zone sand control——take Urxun-Beir depression in Hailar basin for example

作　　者：李占东[1] 刘秋宏[2] 李丽[3] 李阳[4] 王殿举 

机构地区：[1]东北石油大学石油工程学院,大庆163318 [2]大庆油田海拉尔石油勘探开发指挥部,大庆163453 [3]台湾师范大学,中国台北11677 [4]大庆职业学院,大庆163255 [5]北京大学地球与空间科学学院,北京100871

出　　处：《地球物理学进展》2016年第2期537-544,共8页Progress in Geophysics

基　　金：教育部重点实验室开发性课题“页岩气地层脆性评价研究(NEPU-EOR-2014-010)”;东北石油大学校培育基金“基于物模下的曲流河点坝侧积体时空分异机理研究(XN2014127)”联合资助

摘　　要：运用断层生长指数联合断层垂直活动速率方法,判断同生断裂活动时期为铜钵庙组-南屯组沉积时期、伊敏组时期和青元岗组沉积时期,同时,根据断层伸展率和伸展速率的研究得出,同生断裂在南屯组沉积时期变形强度较大,为断层活动的主要关键时期。同生断裂经历了从小到大、从新到老的过程,总体表现为纵向上断裂活动多期性,且由深到浅断裂活动强度逐渐减小的特点,横向上不同位置走向具有分段明显,并利用断裂分段生长点确定了断裂传递带的位置。在此基础上,总结了乌尔逊-贝尔凹陷南屯组主要发育2种控砂模式——同生断裂下降盘控砂和分段生长点控砂模式。同生断层控砂模式与地层沉积演化序列相一致,不同的沉积演化决定了断层控砂类型。南一段主要以断层下降盘和分段生长点控砂为主,南二段表现为断层分段生长点控砂,其中断层下降盘控砂发育有限,主要发育在南一段巴彦塔拉构造带处,断层分段生长点控砂在盆地发育较广泛,是油气聚集的有利场所。This paper applies the fault growth index and the method of vertical fault activity rate to determine that the periods of active growth faults are Tongbomiao Formation-Nantun Formation sedimentary period, Yimin Formation period and Qingyuangang Formation sedimentary period. Meanwhile,according to the study of fault elongation rate and extension rate,syngenetic fracture has bigger deformation intensity during the Nantun Formation sedimentary period, it is the critical period of fault activity.Syngenetic fracture experiences the process of being small to large,new to old,the overall performance character is having more fault activities in vertical,and the intensity of fault activity decreases from deep to shallow,and different positions in horizon have obvious sections. Use the fracture subsection growing point to determine the location of the fracture transfer zone. On this basis,the paper summarizes two main sand control modes in Nantun Formation,Urxun-Beir depression,they are Syngenetic fracture downthrown side sand control mode and subsection growing point sand control mode. Syngenetic fracture sand control mode is consistent with the formation sedimentary evolution sequence, different sedimentary evolution determines the fault sand control type. Nan1 is mainly contained by fault downthrown side and subsection growing point sand control,Nan2 expresses as fault subsection growing point sand control. Among them,the development of fault downthrown side sand control is limited,it primarily develops in Bayantala tectonic belt of Nan1,subsection growing point sand control widely develops in basin,it is a favorable location for hydrocarbon accumulation.

关 键 词：乌尔逊-贝尔凹陷 南屯组 断裂传递带 同生断裂 扇三角洲 

分 类 号：P542[天文地球—构造地质学]