克拉玛依油田九6试验区热采数值模拟研究

本文主要根据热采数值模拟结果,分析了影响克拉玛依油田九₆试验区注蒸汽开发的地质、注汽及完井因素。 结果表明,影响注蒸汽开发效果的主要地质因素为油层有效厚度及原油粘度;绝对渗透率的影响主要在早期,但对最终采收率影响较小。当油层范围内存在高渗透带和渗透率各向异性时,对注蒸汽开采亦有一定的影响,且在采油井蒸汽突破之后,减小注汽井注汽量对开采效果将有所改善。

NUMERICAL SIMULATION STUDY OF THE IX6 PILOT THERM-RECOVERY PROJECT IN KARAMAY OILFIELDS

Based on the results of therm- recovery numerical simulation, this paper presents analyses of geological , steam injection and completion parameters affecting steam injection development of the IXs pilot project in Karamay oilfields.The results illustrate that major geological parameters affecting the efficiency of steam injection development are effective thickness of the pay and crude viscosity. Effect of the absolute permeability manifests mainly in the early period with a little effect on the ultimate recovery. Highly permeable zone and permeability anisotropy existing in the pay zone display certain effects on the steam injection recovery. After steam breakthrough in producing wells, decreasing steam speed into injection wells improves efficiency of the recovery.