Study On Evaluation Of Reserve Value Of ZY-oilfield In Extra High Water Cut Period

With decades of high-speed exploitation,especially in the eastern oil fields,shallow and middle reservoirs are either proven or are being developed,many of which are already in the extremely high water-bearing period,and it is becoming more and more difficult to understand and tap potential reserves.In the face of the urgent needs of the country's economic development,it is necessary to constantly raise awareness,grasp the oil,gas and water reserves,adopt scientific technology and management means,and lay a solid foundation for the appreciation and preservation of reserves.Therefore,it is urgent and very important to evaluate the reserve value in the development of ultra-high water-bearing period.Based on the above purposes,this thesis carries out the valuation evaluation of reserves during the special high water content period,and chooses to develop the ZY oil field which has been developed for 40 years and has more than 90% comprehensive water content as the research object.We comb edify the relevant theories of oil and gas reserve value evaluation,master the research results of domestic and foreign literature,combine the objective environment facing the oil industry oil and gas reserves value evaluation,carefully analyze the problems existing in the evaluation of reserves during the special high water content period of the ZY oil field,and finds that the evaluation of reserve value in ZY oil field needs further optimization.On the basis of taking full account of the factors influencing the valuation of reserves,the geological reliability and economic feasibility evaluation are combined organically,and the first and second-level indicators of evaluation research are selected and determined from the four dimensions of exploration dimension,technical dimension,economic dimension and qualitative dimension.Established the ZY oil field super high water-bearing period reserve value appraisal optimization index,and the weight design is used for the key index at all levels by the hierarchical analysis method,and the value evaluation standard of the reserve severity of the special high water-bearing period of ZY oilfield is formed.Aiming at the problems that may arise in the process of design and implementation of the value evaluation of the reserves of the ultra-high water-bearing period of ZY oilfield,the targeted suggestions are put forward,and the value evaluation of the reserves of the special high water-bearing period of zy oilfield is solved.To ensure that the comprehensive evaluation conclusion can provide an effective reference and promotion for the management system of ZY oilfield,so as to promote the sustainable and high-quality development of oil field enterprises with high water content.