The Research Of3-D Crosswell Seismic Kinematic Forward

Crosswell seismic is a new seismic technology which places source system and receiving system in different wells for exploration. Because of the special geometry, the wave field is very complex and illegible. We can recognize the wave field through the relationship between velocity and time of seismic waves which comes from forward. Also, it is good for acquisition, processing and interpretation of seismic data, so it is very important to research the methods of crosswell seismic kinematic forward.The paper discusses a variety of seismic forward methods, seismic forward modeling methods of test ray tracing and iteration segment by segment ray tracing which are used commonly in surface seismic forward are applied to crosswell seismic kinematic forward, seismic model is built by the method of block-model building, ray tracing is finished by improved ray tracing method, and the synthetic seismic record data are computed through the results of ray tracing. The paper also gives out the introduction of Qt, softwareprocedure method based on Qt, and the correct results of the crosswell seismic forward, which are come from the crosswell seismic forward software.