The modeling method of fracture prediction by using elastic dislocation theory has been discussed, and application of elastic dislocation theory to predict the fracture development orientation, mode and density of faulted blocks in Gullfaks oilfield in North Sea was conducted.
The fracture development has been controlled by 2 factors:① the structure deformation degree was determined by tectonic stress intensity. Generally, the more deformities, the more tectonic fractures were developed.
The study on fractured media of tectonic structures with different characters indicates that the characteristics of fracture development have certain significance in determining hydrogeological boundary of some water-control structures.
In view of mud logging unit with the 0.1 m drilling time and data acquisition specification requirements for the correlation parameters, through making statistics and calculation to a vast sum of mud logging data, three reservoir fracture identification models were set up, which determined reservoir fracture development extent and fracture development position, that is, direct identification model, formation drillability (value A) identification model and drilling time regression value (RWSR) identification model.