地层倾角信息在断层精细刻画中的应用——以渤海湾盆地A油田为例

Application of formation dip in the fine description of fault——take A oilfield in Bohai bay basin as an example

在对地震资料进行解释性处理或属性提取时,往往只是单纯的数学运算很少受到地质条件的约束.当地下岩层为水平地层时,这种方法会获得较好的效果;但地下岩层往往较为复杂具有一定的倾角,这时会使有效信号减弱从而导致资料品质下降,使开发阶段所关注的小断层的精细刻画具有较大难度.针对这个问题,本文引入地层倾角来控制解释性处理、相干和蚂蚁体的运算,并将各技术有机的结合,总结了一套切实可行的断层精细识别思路.通过对A油田断层的精细刻画,进一步深化了油田内部小断层的认识,有效指导了油田开发方案的制定和井位部署.

It ＇s only a simple mathematical operation without constraints of geology in the interpretation processing or attributes extraction of seismic data. When the underground layer is relatively simple,this approach will get good results for the horizontal formation. But the underground strata is very complicated,mostly the layers are inclined. So the effective signal will be reduced and the quality of data will be decreased. In this case,it is difficult to make a fine description of small faults which are concerned by the development of oilfield. In this paper, the formation dip is introduced to control the operation of interpretation processing,coherent and ant operation to solve the problem. And through the combination of these technologies,a practical method for the fine identification of fault is summarized,which make us have more reasonable interpretation of the faults. Through the detailed description of faults in A Oilfield,the understanding of small fault has been further deepened, and effectively guided the oilfield development and well location deployment.