Next Six Very Complex Fault Block To Improve The Degree Of Control Of Water Flooding

Ming 6 block is the most complex and the most cracked block in Wenmingzhai oil field. Due to the construct is extremely complicated and the cognition to structural complexity is deficient, it is hard to form sophisticated injection-production system." Therefore, water injection response is unideal, and exploitation hardness is big. For the moment, the.primal problem of this block is highly geology recovery degree and synthesis containing water, 30.08% and 90.62% respectively.This paper researches the peculiar reservior characteristic fine description of Ming 6 block and its influencing factor to enhance water drive control degree; studies block strata sediment behavior and sediment distribution regularities, establishes stratigraphic correlation standard section of Ming 6 block; finishes strata fine contrast of more than 100 wells in Ming 6 block; Develops research processes and methods for the most complex fault block structure; establishes reservoir physical property parameter interpretation engraving; compiles physical property distribution map for principal oil-bearing sublayer; Studies reservoir characteristic, finishes single well effective thickness division, establishes sublayer effective thickness equal-value map; Carries out underground oil & water travel and oil remaining distribution regularities investigation, establishes sublayer oil remaining distribution map; analyzes the applicability of present well pattern, argues the relation of well spacing density and recovery, presents rational well spacing density of Ming 6 block; On the base of oil remaining distribution regularities study, proceeding oil remaining further exploitation investigation,,At with structure and well pattern study for the premise descend, Ming 6 block develop the adjustment manage with the content of the water driving control degree. Through the measures, such as drilling adjust well, sidetrack drilling and reperforating .profile control in water injection well, augmented injection, in 41 wells, after the use of the adjustment projects, increasing the year produces oil 1.28×10~4t, raising production rate 0. 19%, raising recovery ratio 2. 63%, increasing exploitable reserve...