Benefit Analysis And Evaluation Of Single Well Stimulation Measures In The Later Stage Of Oilfield Development

In the process of petroleum exploration and with the advance exploitation of time, the production of petroleum would undergo significant changes. The production of petroleum would be raised in the production output phase and remained at the high yield levels in the stable production phase and declined substantially in the rapid decline production stage and remained steady decline production in the failure to low-yielding stage. With the development of petroleum be proceeded, the petroleum production would be declining, and the moisture would be rising, and the difficulty of exploitation would be increasing, and the production costs would be continued to rise. Therefore, in the latter part of petroleum development, we need to implement measures to increase production in order to increase production. And so it is necessary to research the effectiveness of the single well measures to increase production questions to guide the smooth development of single well measures to increase production to improve the overall economic benefits of petroleum development, and provide a theoretical basis and technical support for the fine management of petroleum companies. By using the method of economic limit production and marginal theory, we utilize the two indexes of net income and incremental cost-effectiveness to analyze and calculate the benefit of seven single well measures to increase production in the late oilfield development, and it proved that the seven kinds of Measures to increase production is effective. On this basis, we establish measures to increase production benefit index system of the single well on late field development, and finally analyze and evaluate the results of seven measures to increase production by the gray fuzzy comprehensive evaluation method that is the multivariate analysis method, and the result show that under the premise of comprehensively considering of efficiency indicators the benefit of supplementary layer is best, and the benefit of chemical sand control is worst. It proves that the single-factor calculation method is not suitable for the benefit of the measures to increase production, and the multi-factor comprehensive evaluation method in accordance with the benefit evaluation index system can better study the outstanding degree of the benefit to the measures to increase production in the late petroleum development, and it provides decision evidence for the achieving best benefit to petroleum company. This is the deepening of the fine management to the petroleum companies, and it has guiding significance to reduce costs, and imply the modern management, and improve development of decision-making level for the petroleum companies.