沉积韵律控制下的厚层砂体水淹级别精细划分

his paper represents that the sedimentary rhythm is a primary factor to control the distribution regularity of water flooded zones in the thick sand bodies and the mudstone barriers have controlling and segmentation effect to the water flooded regularity of multi-channel. The stable mudstone barrier bed is adopted as the separates symbol for different interpretation unit that is identified from well logging curve so that only one sedimentary rhythm is contained in each interpretation unit. The Average slope of resistivity curve and relative center of gravity of density curve are adopted as discrimination parameter for identifying the original sedimentary rhythm by computer in each interpretation unit. Taking the middle of each rhythm as the standard layer with which the other layers in this rhythm are compared with electrical, petro-physical and time-frequency properties, the water flooded level of these layers are automatically discriminated to combining the relative location from the standard layer. The interpretation coincidental rate of The processing result of eleven sealed core wells and the result of core analysis is up to 78%.