永探1井区二叠系火山岩储层物性下限研究  

Study on the Physical Property Lower Limits of the Permian Volcanic Rock Reservoir in the Yongtan 1 Well Area

作　　者：肖光唯 赵峰[1] 夏茂龙[2] 何开来 姚宇 Xiao Guangwei;Zhao Feng;Xia Maolong;He Kailai;Yao Yu(School of Earth Sciences and Technology,Southwest Petroleum University,Chengdu 610500;不详)

机构地区：[1]西南石油大学地球科学与技术学院,四川成都610500 [2]中国石油西南油气田分公司勘探开发研究院,四川成都610041 [3]中国海洋石油湛江分公司,广东湛江524057

出　　处：《石化技术》2025年第1期243-245,共3页Petrochemical Industry Technology

摘　　要：通过孔渗交会法、最小流动孔喉半径法、孔饱法和气水相渗法等多种手段,对永探1井区二叠系火山岩储层的物性下限进行了深入分析。研究结果显示,该地区火山岩储层的孔隙度下限为6.4%,渗透率下限为0.002 mD,含水饱和度上限为57.8%。具体而言,孔渗交会法揭示了储层中孔隙度与渗透率的显著拐点,而最小流动孔喉半径法则确定了有效孔隙通道的最小尺寸。结合孔饱法和气水相渗法的结果,进一步明确了储层含水饱和度的上限。这些研究成果为永探1井区火山岩的分类评价和有效储量评估提供了科学依据,有助于提高对该区域油气资源的认识和开发潜力的评估。This study conducts an in-depth analysis of the physical property lower limits of the Permian volcanic rock reservoir in the Yongtan 1 well area using various methods,including pore-permeability cross-plotting,minimumflow pore throat radius method,pore saturation method,and gas-water relative permeability method.The results indicate that the lower limit of porosity for the volcanic rock reservoir in this area is 6.4%,the lower limit of permeability is 0.002 mD,and the upper limit of water saturation is 57.8%.Specifically,the pore-permeability cross-plot reveals significant inflection points between porosity and permeability,while the minimumflow pore throat radius method identifies the minimum size of effective pore channels.By integrating the findings from the pore saturation method and gas-water relative permeability method,the upper limit of water saturation is further clarified.These research results provide a scientific basis for the classification and evaluation of the volcanic rocks in the Yongtan 1 well area,enhancing the understanding and assessment of the oil and gas resource development potential in this region.In summary,this study lays a foundation for a deeper understanding of volcanic rock reservoirs and holds significant theoretical and practical implications.

关 键 词：物性下限 物性特征 火山岩储层 永探1井区 

分 类 号：P61[天文地球—矿床学]