The Application Of Fracture Prediction Method With Seismic Data In Damintun Shasi Area

The problem of uneven distribution of fracture and porosity in fractured reservoirs is more prominent,which has become a difficult problem in oil and gas exploration.In the Damintun area of Liaohe oil-field,through analysis of geological data,the lithology of the Shasi area is mainly the oil shale,siltstone and argillaceous dolomite.Structural features is the typical of "sandwich",cracks in the structure was developed,with the analysis of Damintun area,we found the area is mainly fractured reservoirs.Nowadays,experts and scholars at home and abroad have found that there were variety of fracture prediction methods,but in the oil fractured reservoir prediction,it has not formed a complete set of theory.The development of formation fracture will cause the change of the medium properties,which will lead to the change of the seismic response.In practical exploration,only using one kind of fracture prediction technique is very difficult to obtain accurate analysis results,and the result is not unique this paper use pre-stack P-wave anisotropic fracture prediction technique,poststack seismic prediction techniques and combined with the structural stress field analysis to comprehensive analysis of Damintun area.Firstly,according to the logging data of Damintun in fine structural interpretation;then using multiple seismic poststack attribute for the large scale prediction;combination of P-wave azimuthal anisotropic fracture prediction technique predicted sand of Damintun Shasi member of the crack the developmental features,through the calculation of the tectonic stress field,the statistical fracture development the main range is foundation of pre stack fracture detection.And sections of the fracture characteristics.