Research on the main controlling factors of fracturing effect in tight sandstone gas reservoir of Zhongjiang gas field
The fracturing effect of tight sandstone gas horizontal wells is affected by many factors,mainly including reservoir geological factors and fracturing construction factors.It is of great significance to clarify the influence of various factors on the effect of hydraulic fracturing.In view of the fact that the main control factors of fracturing in the Zhongjiang block are less studied and the related problems are unclear,combined with the geological and fracturing construction data of the research block,based on the machine learning Apriori analysis and the entropy method,the tightness of the Shaximiao Formation in the Zhongjiang block is established.Research methods on main controlling factors of hydraulic fracturing in sandstone gas wells.The main controlling factors that affect the fracturing effect of the block are the number of fracturing stages,permeability,total sand addition,shale content,and average sand ratio.Furthermore,the influence degree of the main control factor parameter value range on the fracturing effect is analyzed,and the optimized construction parameters are determined.Finally,using the main controlling factors of fracturing effect,the naive Bayes method is used to predict the open flow rate.Two fracturing wells in the study area are selected for case analysis,which verifies the correctness of the method.The research results have certain guiding significance for fracturing well selection and layer selection and optimization of fracturing construction parameters in this block.
NETL
NSTL
万方数据
维普
