地震与地质相结合确定断层断距
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摘要
以目前国内油田开发中获得断层断距的方法为着眼点,指出断层不同断距在应用过程中易于出现的问题,提出了以断层总滑距的X、Y、Z分量来刻画断距的思路。针对走滑量可忽略的断层,利用品质好的深度域三维地震数据体来获得断层倾角和铅直断距,通过实例说明应用地震、地质结合的方法可以消除测井地质分层对比中大部分人为因素造成的断层假象,客观刻画断层断距,描述铲状断层,并制作精细客观的连井剖面。地震与地质相结合确定断层断距在进行断层封闭性研究时更具重要意义,并在生产中验证了以上方法的可行性和可靠性,为今后断层断距研究提供了可靠保证。
This article describes the method to get the amplitude of fault during domestic oilfield development at present. It points out the problems in determining the amplitude of fault and puts forward the method to precisely describe the fault throw by the X,Y and Z components of fault total slip. It points out that the fault dip angle and vertical fault throw can be obtained by using the good-quality 3D seismic data in depth domain. Finally, the paper indicates that we can avoid the false appearance of factitious fault in logging geologic stratification correlation, objectively describe the fault throw and shovel-like fault and make the precise connecting-well sections in terms of the method of combining seismic with geology. The determination of amplitude of fault based on the method has an important significance when studying the fault sealing property. The feasibility and reliability of this method have been verified in practice, which provides a reliable guarantee for the study of amplitude of fault in future.
This article describes the method to get the amplitude of fault during domestic oilfield development at present. It points out the problems in determining the amplitude of fault and puts forward the method to precisely describe the fault throw by the X,Y and Z components of fault total slip. It points out that the fault dip angle and vertical fault throw can be obtained by using the good-quality 3D seismic data in depth domain. Finally, the paper indicates that we can avoid the false appearance of factitious fault in logging geologic stratification correlation, objectively describe the fault throw and shovel-like fault and make the precise connecting-well sections in terms of the method of combining seismic with geology. The determination of amplitude of fault based on the method has an important significance when studying the fault sealing property. The feasibility and reliability of this method have been verified in practice, which provides a reliable guarantee for the study of amplitude of fault in future.
引文
[1]朱志澄,韦必则,张旺生,等.构造地质学[M].武汉:中国地质大学出版社,2004:144-145.
[2]胡健民.冀北承德地区张营子-六沟走滑断层及其构造意义[J].地质论评,2005,51(6):621-632.
[3]刘雯林.油气田开发地震技术[M].北京:石油工业出版社,2004:4-36.
[4]洪余刚,陈景山,代宗仰,等.合成地震记录层位精细标定应用研究[J].勘探技术,2005,10(6):45-47.
[5]黄桂芝.断层两盘矿层产状变化条件下真伪地层断距间关系式的探讨[J].矿业安全与环保,2001,28(6):35-36.
[2]胡健民.冀北承德地区张营子-六沟走滑断层及其构造意义[J].地质论评,2005,51(6):621-632.
[3]刘雯林.油气田开发地震技术[M].北京:石油工业出版社,2004:4-36.
[4]洪余刚,陈景山,代宗仰,等.合成地震记录层位精细标定应用研究[J].勘探技术,2005,10(6):45-47.
[5]黄桂芝.断层两盘矿层产状变化条件下真伪地层断距间关系式的探讨[J].矿业安全与环保,2001,28(6):35-36.
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