涩北一号气田防砂选井选层优选方法研究

On Well-layer Selection Optimization of Sand-proof in No.1 Sebei Gasfield

在分析涩北一号气田影响出砂主要因素的基础上,定义并建立防砂选井选层的指标体系,以气井储层物性、测井数据和岩石力学分析为基础,结合气井出砂动态,对评价指标体系进行量化评价。引入成本型权重定义方法和模糊优选理论,建立气田单井和小层防砂优选的模糊层次分析方法。该方法不仅可优选全气田气井防砂顺序,而且可进一步优选特定井的防砂层位。

This paper, on the basis of analyzing the factors of shakeout, builds sand-proof and well-layer selection index system. It also makes quantized evaluation combined with the physical function, logging data and rock mechanics. In this paper, method of weighting and fuzzy optimization theory are introduced to set up fuzzy analysis method. This fuzzy analysis method can select both the order of gasfield sand-proof and the sand-proof layer.