低渗透油气藏的成藏机理与分布特征  

Research on accumulation mechanism and distribution characteristics of low permeability oil and gas reservoirs

作　　者：金玉强 Jin Yuqiang(PetroChina Chuanqing Drilling Geological Exploration and Development Research Institute,Chongqing 401120)

机构地区：[1]中石油川庆钻探地质勘探开发研究院,重庆401120

出　　处：《化学工程与装备》2023年第2期131-133,共3页Chemical Engineering & Equipment

摘　　要：目的:探究低渗透油气藏的成藏机理与分布特征。方法:利用弛豫时间测量法,在低渗透油气藏快速扩散情况下,探究流体的弛豫时间。通过弛豫时间计算,分析成藏机理和分布特征。结果:低渗透油气藏的成藏需要满足油源条件、储层条件和油气运移通道条件、圈闭条件和保存条件,并且低渗透油气藏分布与弛豫时间之间存在指数关系。结论:为实现低渗透油气藏成藏,需要结合其机理,从五个方面为其提供成藏条件,并且低渗透油气藏水驱后仍然存在较大的挖掘价值。Objective: To explore the accumulation mechanism and distribution characteristics of low permeability oil and gas reservoirs. Methods: Using the relaxation time measurement method, the relaxation time of fluids was explored in the case of rapid diffusion of low permeability oil and gas reservoirs. Through the calculation of relaxation time, the accumulation mechanism and distribution characteristics are analyzed. Results: The accumulation of low-permeability oil and gas reservoirs needs to meet oil source conditions, reservoir conditions,oil and gas migration channel conditions, trap conditions and preservation conditions, and there is an exponential relationship between the distribution of low-permeability oil and gas reservoirs and relaxation time. Conclusion:In order to realize the accumulation of low-permeability oil and gas reservoirs, it is necessary to provide accumulation conditions from five aspects in combination with its mechanism, and the low-permeability oil and gas reservoirs still have great excavation value after water flooding.

关 键 词：低渗透 油气藏 成藏机理 分布特征 

分 类 号：P618.13[天文地球—矿床学]