出砂影响因素的数值模拟评价

疏松砂岩油藏适度出砂可以大幅度提高油井产能,研究出砂影响因素对产能的影响可提高该类油藏的开发和管理水平。通过建立一维出砂模拟模型,以SZ36-1油藏岩石特性参数为例,研究了不同粘度、剥蚀系数、入口端压差及原始渗透率等因素对蚯蚓洞发育、岩心孔隙度、渗透率等方面的影响。研究表明,这些因素都影响着蚯蚓洞的形成与发育,进而影响岩石的孔隙度和渗透率,其中岩石的强度对出砂影响最显著。

Evaluation of numerical simulation on factors affecting sand production

Suitable sand production can improve the productivity in oil wells of loose sandstone oil reservoir.The re-search of the influence factors of the sand production on the productivity may raise the level of development and management in this type of oil reservoir.Based on the rock characteristic parameters of SZ36-1 oil reser-voir,the effects of viscosity,denudation coefficient,inlet pressure drop,primary permeability on the development of wormhole,core porosity and permeability were re- searched.It shows that these factors influence the form-ing and development of the wormhole,and then rock porosity and permeability.And the rock strength affects sand production most notably.