Influence Factors Of Production Capacity Of He₈ And Shan₁ Section,Sulige Gas Field Of Ordos Basin

The He8 and Shan1 sections of Sulige gas field in Ordos Basin are one of the main producing layers in this area. In recent years, a large number of infill wells have been drilled and put into production in the middle of the study area to compensate for the decline of production, and the resource base has been basically implemented. At present, the middle area of the study area has not yet been put into large-scale development, and the number of wells being put into production is less. The productivity of gas wells is generally low, and the production capacity varies greatly. Therefore, in order to ensure that the study area is relatively long-term stable, improve resource productivity, it is necessary to evaluate the study area in the middle of the reservoir and gas production, gas enrichment area for further optimization of well deployment, provide a strong theoretical basis to implement rolling development in central region.In this paper, on the basis of previous research, make full use of modern analysis and testing technology, adopting the research method of petrology, reservoir sedimentology,reservoir physics and other disciplines are combined, in the study area of central tectonic characteristics and reservoir characteristics in detail, and reservoirs are evaluated. According to the geological characteristics of gas reservoirs and combined with the development of dynamic data analysis of the impact of geological parameters, sedimentary microfacies,reservoir and hydrocarbon source rock distribution, gas well water, fracturing, pressure sensitive effect and other factors on gas well productivity. Through analysis,it is considered that the main factors influencing the productivity of gas wells: geological parameters,sedimentary microfacies, diagenesis, distribution of hydrocarbon source rocks, gas well water.Fracturing, pressure sensitive effect. Gas well production is the main factor affecting gas well productivity. Because of pressure sensitive effect, control production wells, production performance is better than the pressure wells, can ensure the long time stable.