摘要
裂缝是潜山凝析气藏重要的储集空间和主要渗流通道,影响潜山凝析气藏的成藏、富集及单井产能。B凝析气田是渤海海域深层太古界变质岩潜山的大型凝析气田,在研究其储层裂缝发育特征的基础上,分析并阐明了气井产能差异大的原因及裂缝对产能的影响。裂缝厚度、渗透率与产气量呈正相关,裂缝开度和密度影响最小,近东西向裂缝连通性最好,对天然气产能贡献最大。结合实际生产状况,利用数值模拟绘制适用于渤海B凝析气田的产能评价图版。
Fractures are important reservoir space and main seepage channel of buried hill condensate gas reservoir,and affect the accumulation,enrichment and single well productivity of buried hill condensate gas reservoir.B condensate gasfield is a large condensate gasfield in deep Paleozoic metamorphic buried hill in Bohai Sea.On the basis of studying the development characteristics of reservoir fractures,the reasons for the large difference in gas well productivity and the influence of fractures on productivity are analyzed and expounded.Fracture thickness and permeability are positively correlated with gas production,fracture openness and density have the least influence,and fracture connectivity near east and west is the best,contributing the most to gas production.Combined with the actual production situation,the productivity evaluation chart for B condensate gasfield in Bohai Sea was drawn by numerical simulation.
作者
黄磊
张雷
汪跃
吴浩君
刘文超
HUANG Lei;ZHANG Lei;WANG Yue;WU Haojun;LIU Wenchao(Tianjin Branch of CNOOC Ltd.,Tianjin 300459,China)
出处
《石油化工应用》
CAS
2021年第3期89-93,共5页
Petrochemical Industry Application
基金
国家科技重大专项“渤海油田高效开发示范工程”,项目编号:2016ZX05058
中海石油(中国)有限公司重点项目“渤海中深层复杂油气藏高效开发技术”,项目编号:CNOOC-KJ135 ZDXM36 TJ03TJ联合资助。
关键词
凝析气
裂缝特征
产能差异
控制因素
评价图版
condensate gas
fracture characteristics
productivity difference
control factors
evaluation chart
