Study For Decision-making System Of Adjusting Measures On Oilfield Development

Any reservoir reached a certain stage, water content increased, oil yield decreased progressively, and the remaining oil distribution sporadically, these are the necessary step, so that the reservoir development in the mid-and late part ,the oil field must formulate corresponding development of technology policy to take the necessary development adjust measures to reverse the production declining, and to reduce or slow down the rate of increase in moisture content. it is necessary that making a reasonable evaluation to reservoir development strategy in the early stage and the status of the development, ascertaining the status of the development process and identifing development process contradiction in order to adjust the latter part of development policy research and lay a foundation.With the increase of moisture content in Oil Field, we must adopt various measures to carry out to improve the effectiveness of water flooding development. Among these measures, how to assess the direction of these measures is essential in order to select the best measures ,we choose the different indicators, the results are different ,which raises difficult questions for the oil field workers. In order to achieve oil stabilization and water control, to maximize the potential underground remaining oil ,to extend the period of stable oil fields, the use of optimization method, fuzzy math theory, analytic hierarchy theory, combined with the actual characteristics of reservoir parameters, seting up to develop the potential of water-drive reservoir indicators and multi-factor comprehensive evaluation method, and forming theoretical system, evaluating the effect of the development and providing decision-making for adjustment measures.In oil field water flooding, adjusting fracture, water shutoff, profile, perforations adding, analysising dynamic indicators and evaluating the status of the development are important to enhanced oil recovery. Analysising the adaptability of these different measures and giving the optimization method in the article. giving optimization method for fracture, perforations adding, profile control measures. Finally predicting different adjusting measures and the development of indicators and making technical and economic evaluation.In this paper, fuzzy theory, analytic hierarchy process, multiple correlation coefficient and coefficient of variation principle applied to oil field development evaluation and adjustment measures the effect of optimization. By analyzing the water-drive oil field development system to determine the characterization of the system, seting up oilfield geological evaluation standard and evaluation methods, seting up evaluation standards of water flood field development effect and evaluation methods. Focusing on fracturing, fill holes, profile control measures to give optimization method. Finally for different adjusting measures and programs to predict the development of indicators and to make technical and economic evaluation.Appling Microsoft Visual Basic 6.0 to development decision-making system by thesis and approaches in the article which is full of functional rational structure, open, advanced, security, convenience and practicality. used to calculate the actual data to prove that its theoretical method is reliable, the software running is stability and applicability.