Fuyu Core Data And Fine Sand Structured Analysis

With structural adjustment of well pattern during secondary development and reconstruction, the Fuyu oil field has formed a new well pattern dominated by linear flooding well network. However, the formation of new pattern leads to some serious problems such as invalid water cycle, acceleration of water cut increase and steep decrease of new well production. Meanwhile, years of water-flooding and continuous adjustment cause significant change of geological and developmental characteristics and more complex distribution regularities of remaining oil underground. In terms of current development phase of Fuyu oil field, it still needs better understanding of remaining oil to satisfy refined development requirements to oil fields.In this paper, based on previous research achievements, detailed observation and description of sealed core well and analyses of various laboratory data have been made to conduct researches on sedimentary characteristics of reservoir, interlayer and configuration analysis, permeability rule and remaining oil. By these ways we could deepen the understanding of oil layer, establish recognizable pattern of core logging of interbeds and internal structure of single sand body, and provide theoretic foundation for refined development of Fuyu oil field.