Phantom faults and methods for their detection
Under phantom faults, we understand faults that due to the small modern seismic amplitudes are not fixed and are not crossed any one well. Faults are shown in relief, in the materials of seismic, gravity, electro studies on the correlation of well sections, according to the peculiarities of spontaneous curvature wellbores during drilling, capacity to analyze sediments forming sedimentary basin, the distribution of the initial reservoir pressures and characteristics of their changes in the process development and exploitation. To identify all the faults and other features of geological structure is sufficient to conduct a detailed analysis of the material standard search seismic exploration drilling performed in front, cuts all the wells and the surface topography of the land mine. Faults occur in narrow bands change topography, spatial orientation of an elongated shape and height position of relief, sharp turns the direction of flow of the rivers, potholes on country roads. The materials of seismic faults fixed a significant part, but even within the capabilities of this method is not extracted all the information for the allocation of structural faults in the preparation of maps. This damage can easily compensate for a detailed analysis of each and every sections of wells drilled on-site research and analysis should be subject to cuts from scratch (from the surface) before slaughter. Features of the geological structure of structures, in particular - faults, should be reflected in the nature of the change capacity deposits, synchronous neotectonic activity in the region. The solution to this problem should begin with a detailed correlation of sections of wells with drawing up correlation tables. To partition and correlation of sections should be used diagrams of standard logging radioactive logging and caliper, especially in uniform cuts the low differentiation charts geophysical well logging.