海拉尔盆地构造反转期的界定  

DETERMINATION OF THE STRUCTURAL REVERSE PERIODS OF HAILAR BASIN

作　　者：陈均亮[1] 曲红艳[1] 林春华[1] 陈沫[1] 田小彬[1] 单翀[2] 

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第三采油厂,黑龙江大庆163113

出　　处：《大庆石油地质与开发》2013年第1期1-6,共6页Petroleum Geology & Oilfield Development in Daqing

基　　金：中国石油天然气股份有限公司重点科技攻关项目（200880100）和国家自然科学基金项目（40773030、40573002）.

摘　　要：海拉尔盆地侏罗纪-白垩纪的演化经历了多个张扭-压扭的沉积-构造旋回，前人对盆地反转期的认识存有分歧。基于大量地震、钻井和地表地质资料，深入解剖了贝尔湖坳陷反转构造的主要特征并厘定了其反转期为青元岗组沉积末期（白垩纪末期）。与松辽盆地的反转期一致，表明同受东亚大陆边缘的斜向会聚一剪切造山作用的控制，变形具有“东南强、西北弱”的特点。通过对海拉尔盆地地震剖面的解释和构造演化史剖面的分析，认为铜钵庙组沉积末期和伊敏组沉积末期为张扭变形，动力学性质没有改变，不应定义为构造反转期。青元岗组沉积末期的反转变形既为油气运移提供了输导通道也为油气聚集提供了圈闭，故厘定反转期和研究反转构造对油气勘探有重要意义。The Jurassic-Cretaceous evolution in Hailar Basin has experienced multiple tenso-shear tectonic-sedi- mentary reversals, there are a certain different understanding about the reverse periods of the basin. On the bases of the seismic, drilling and surface geological data, the main characteristics of the reverse structures in Beier Lake Sag are deeply analyzed and furthermore the reverse period is calibrated to be the late period （ Late Cretaceous } Of Qingyuangang Formation sedimentation. The accordant reverse period with that of Songliao Basin shows that both of them are controlled by the oblique concourse-shear mountain building of the continental margins of East Asia and moreover the deformation is characterized by ＂strong in the southeast and weak in the northwest＂. Through the in- terpretation of the seismic profiles and the section analyses of the structural evolution history~ the late periods of Tongbomiao and Yimin Formations/ deposition are thought to be tenso-shear deformations the dynamics properties are not changed, so they are not defined to be the reverse periods of the structures. The reverse deformation at the end of Qingshankou Formation sedimentation not only provides the channels for hydrocarbon migration/transport but also the traps of the hydrocarbon accumulation, so the calibration of the reverse periods and the studies of the re- verse structures possess great significances for the exploration of the oil and gas.

关 键 词：反转期 构造反转 白垩纪末 海拉尔盆地 

分 类 号：TE121.2[石油与天然气工程—油气勘探]