地震地质信息在焉耆盆地断裂封堵性研究中的应用
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摘要
从焉耆盆地所开展的8条比较典型的开启或者封堵的断裂的研究入手,利用地震地质综合研究的方法———“断面应力分析法”和“断面物质涂抹法”,发现该盆地内的断裂在横向上和垂向上开启或者封堵时的“临界值”分别为0.3333和5MPa,指出断裂的封堵性因其形成的时间、垂向上所在的部位和走向上所在的位置等方面的不同而不同。结合断裂及断裂控制圈闭的各项地震地质条件,对该盆地无钻井的断裂进行了断裂的封堵性研究,为盆地的勘探部署提供了有利的证据。同时指出,在探井资料比较少的地区应充分、有效地利用已有的地质、地震资料来开展此项工作,并最终做出合理的、可信度较高的研究结果。
Starting from the study on 8 typical,open and sealed faults in Yanqi Basin,by using integral seismic-geologic methods,such as fault stress analytical method and fault smearing method,it is found out that the critical values of the fault as it is vertically and horizontally opened and sealed are 0.3333 MPa and 5 MPa respectively.It is pointed out that because times and vertical and strike positions of the fault are different,the fault seal properties are different.Fault seal properties are studied on non-drilling faults in the basin in combination with the seismic-geologic conditions of the fault and fault-controlled traps,by which beneficial basis is provided for the exploration in the basin.Also it is pointed out that in the areas where there is no enough data of exploration wells,the geologic and seismic data shall be fully and effectively used to carry out the study and eventually to obtain rational and highly convinced results.
Starting from the study on 8 typical,open and sealed faults in Yanqi Basin,by using integral seismic-geologic methods,such as fault stress analytical method and fault smearing method,it is found out that the critical values of the fault as it is vertically and horizontally opened and sealed are 0.3333 MPa and 5 MPa respectively.It is pointed out that because times and vertical and strike positions of the fault are different,the fault seal properties are different.Fault seal properties are studied on non-drilling faults in the basin in combination with the seismic-geologic conditions of the fault and fault-controlled traps,by which beneficial basis is provided for the exploration in the basin.Also it is pointed out that in the areas where there is no enough data of exploration wells,the geologic and seismic data shall be fully and effectively used to carry out the study and eventually to obtain rational and highly convinced results.
引文
[1]吕延防,付广.油气藏封盖研究[M].北京:石油工业出版社,1996.
[2]周英.断层封堵分析技术在油气勘探中的应用[J].石油地球物理勘探,1998,33(5):650~657.
[3]邹华耀.断层封闭与油气运移和聚集[J].江汉石油学院学报,1999,21(1):9~12.
[2]周英.断层封堵分析技术在油气勘探中的应用[J].石油地球物理勘探,1998,33(5):650~657.
[3]邹华耀.断层封闭与油气运移和聚集[J].江汉石油学院学报,1999,21(1):9~12.
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