Evaluation Of TZ402Câ…¢ Oil Group Development Effects And Study Plan Adjustment Countermeasures

Tazhong4Oilfield402CIII oil group after a long-term development, has entered the development stage of high water cut stage, with the deepening of mining, water cut rising speed, production decline is more and more serious, and water oil relations become increasingly complex, the remaining oil distribution is more fragmented, oil fields to achieve long-term stable and further adjustment work is more and more difficulty big. Further study of basic geology and reservoir engineering is urgently needed to evaluate the oil group, the development effect, to find main problems existing in whole oil group, and then on the plan adjustment countermeasures put forward constructive suggestions.In this study, from the actual situation of the reservoir, combined with previous geological knowledge, application of core, logging and seismic data, the geological characteristics of the oil group were reviewed, and the application of basic reservoir engineering methods, from natural energy oil group, pressure maintenance level, the producing degree of reserves, production situation, the remaining recoverable production rate and reserves, aspects of waterflooding effect so as to evaluate the development effect of TZ402CIII oil group. The main results of this the following results and understanding:The1-3layer to estimate the natural water volume25times, the natural water energy in general;4-homogeneous section estimation of natural water body Volume49times, the natural water energy well.1-3small layer pressure to maintain the degree is48.77%, keep the degree is low;4-homogenization pressure to maintain the degree is74.71%, keep well.1-3layer in the recoverable recovery factor of59%, the producing degree of reserves is relatively low;4-homogeneous segments can be recovery up to more than95%of reserves, reserves producing degree of high.The1-3layer water injection development effect evaluation results were "poor",4-5layer water flooding development effect evaluation results for "better".