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为了探索和提高吉林油田水平井开发深层天然气的产能和经济效益,必须进一步研究影响其产能的影响因素。通过科学的抽象,建立了反映气藏地质特征的非均质地质模型,以油藏数值模拟为手段,研究了水平井在低渗透率气藏中的产能变化,建立了水平井初期产能与影响因素的定量关系图版。所考虑的影响因素包括气层厚度、储层渗透率、渗透率各向异性、渗透率变异模拟数。研究表明研究表明:随着气层厚度的增加,气藏渗透率对水平井采气指数的影响越明显;渗透率大于一定数值,水平井产能才增加明显。
In order to explore and improve the productivity and economic benefits of horizontal well development in Jilin Oilfield, it is necessary to further study the factors that affect its capacity. Through the scientific abstraction, a heterogeneous geological model reflecting the geologic characteristics of gas reservoirs has been established. With the reservoir numerical simulation as a means, the productivity change of horizontal wells in low permeability gas reservoirs has been studied, and the initial productivity and influence of horizontal wells have been established Quantitative relationship between the factors Figure version. Factors considered include gas thickness, reservoir permeability, permeability anisotropy, and permeability variability simulations. The results show that with the increase of gas cap thickness, the permeability of gas reservoirs has a more obvious effect on the gas production index of horizontal wells. When the permeability exceeds a certain value, the productivity of horizontal wells increases obviously.