龙凤山火山岩气藏经济有效开发下限研究  

Study on the Economic and Effective Development Limits of Longfengshan Volcanic Reservoir

作　　者：康晓凤 KANG Xiaofeng(Northeast Oil&Gas Branch,SINOPEC,Changchun 130062,China)

机构地区：[1]中国石化东北油气分公司,吉林长春130062

出　　处：《广东石油化工学院学报》2024年第1期19-24,共6页Journal of Guangdong University of Petrochemical Technology

摘　　要：龙凤山气田火山岩气藏地质条件复杂,具有“喷发期次多、机构规模小、岩相变化快、流体性质多变”的特点,不同井区储层物性参数和气藏类型不同,致使经济评价时所用测算参数差异较大。以现金流量法为基础,针对不同气藏类型(井区)建立了经济评价模型,分析了敏感性因素。结合气藏生产特征,建立了不同井区不同水平段长度经济有效开发下限图版,并分析了不同条件下实现气田经济有效开发所应满足的基本物质条件,优选了经济有效开发区块。结果表明,储层中深是影响气田开发经济效益最重要的因素,北213井区储层中深3400 m,当水平段长度800 m时,经济有效开发初产下限3.4×10^(4)m^(3)/d、单井控制储量下限1.6×10^(8)m^(3)。在目前经济技术条件下,水平段长度800~1600 m时,北5井区期次1西部、北213井区和北217井区期次3东南部、北213井区期次4东北部和北218井区期次4西北部可作为部署水平井的目标区块。Longfengshan volcanic reservoir has complex geologic conditions,and is characterized by multiple eruptive periods,small organization scale,rapid changes in lithofacies and variable fluid properties.Different blocks have different physical properties and reservoir types,resulting in large differences in the calculation parameters used in economic evaluation.With the help of cash flow method,different economic evaluation models were established for different gas reservoir types.The sensitivity of each factor was evaluated.Based on the production characteristics,the chart boards of economic and effective development limits for different blocks and different horizontal well lengths were established.The basic material conditions for economic and effective development ware analyzed.Furthermore,the optimization of economic and effective development blocks was carried out.The results show that reservoir depth is the most important factor affecting the economic benefit.The middle depth in Block North 213 is 3,400 meters,in which the limit of initial production and controlled reserves for economic and effective development is 34,000 cubic meters per day,and from 160 million cubic meters,respectively.Under the current economic and technical conditions,when the length of horizontal wells is 800 to 1,600 meters,the west of Block North 5 in stage 1,the northeast of Block North 213 and Block North 217 in stage 3,the southeast of Block North 213 in stage 4 and the northwest of Block North 218 in stage 4 are recommended as the target block for deployment of horizontal wells.

关 键 词：火山岩气藏 产量递减规律 现金流量法 下限图版 敏感性分析 

分 类 号：TE377[石油与天然气工程—油气田开发工程]