隐性走滑断裂识别标志及其与油气聚集的关系——以青东—莱州湾构造带为例

发布时间：2018-04-15 01:26

本文选题：隐性走滑断裂 + 识别标志　；参考：《东北石油大学学报》2017年03期

【摘要】：为了研究郯庐断裂带隐性走滑断裂特征和发育机制,确定它对油气成藏的控制作用,利用青东—莱州湾构造带高精度三维地震和钻井资料,研究隐性走滑断裂的构造特征、识别标志、断裂样式及成因机制,分析它与油气聚集关系。结果表明:研究区隐性走滑断裂可归纳5种识别标志:(1)断裂走向一致、倾向相反;(2)断裂平面变形明显、两侧地层产状突变;(3)断裂两侧地层厚度、地震相差异大;(4)断裂呈直立"栅栏状"特征;(5)断裂两侧油水关系不统一。包括潜山直立型、盆缘调节型、盆内末端型和盆内桥连型四类构造样式。该区隐性走滑断裂的大量发育与喜山运动向东挤出、太平洋板块向西俯冲的共同作用有关;隐性走滑断裂对圈闭形成、沉积特征和油气的运聚具有明显控制作用。该结果可以有效指导研究区油气二次勘探,为走滑断裂带的精细勘探提供参考。
[Abstract]:In order to study the characteristics and development mechanism of the recessive strike-slip fault in the Tanlu fault zone and determine its controlling effect on the hydrocarbon accumulation, the structural characteristics of the recessive strike-slip fault are studied by using the high-precision 3-D seismic and drilling data of the Qingdong-Laizhou Bay structural belt.Identification marks, fault patterns and genetic mechanisms, and analysis of its relationship with oil and gas accumulation.The results show that the recessive strike-slip faults in the study area can be classified into 5 kinds of recognition marks, the strike of which is consistent with the trend of the opposite direction, and the plane deformation of the fault is obvious, and the formation thickness on both sides of the fault is obviously changed by the occurrence of the strata on both sides of the fault.The difference of seismic facies is that the fault is characterized by vertical "palisade" shape. (5) the oil-water relationship on both sides of the fault is not uniform.It includes buried hill vertical type, basin margin adjusting type, inside basin end type and basin bridge connecting type.The massive development of the recessive strike-slip faults is related to the westward subduction of the Pacific plate and the extrusion of the Himalayan movement to the east, and the recessive strike-slip faults play a significant role in controlling the trap formation, sedimentary characteristics and hydrocarbon migration and accumulation.The results can effectively guide the secondary exploration of oil and gas in the study area and provide a reference for fine exploration of strike-slip fault zone.
【作者单位】：中海石油(中国)有限公司天津分公司;大庆油田有限责任公司第四采油厂;
【基金】：国家科技重大专项(2016ZX05024-003)
【分类号】：P618.13

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