松辽盆地北部徐家围子断陷火山岩气藏勘探新技术
|
摘要
松辽盆地北部徐家围子地区深层发育了大量的火山岩体,特别是营城组一段,火山岩相以多期的爆发相和喷溢相空间相互叠置为主。火山岩天然气藏广泛分布。勘探实践表明:天然气藏的分布受火山机构和区域构造的控制。火山岩储层在火山口附近的爆发相和喷溢相、相对的局部构造高部位和断裂附近地区比较发育。火山岩物性好坏受地层埋深影响不是很大。各个气藏都在不同的海拔高度见到了水层,说明各个气藏边界受火山岩岩性控制。综合分析研究结果,气藏类型为岩性-构造气藏。火山岩勘探难度大,其成熟方法在国内外不多见,可借鉴的方法很少。结合松辽盆地北部徐家围子地区深层营城组一段火山岩气藏钻探过程,阐述了火山岩气藏勘探方法,深化和丰富了火山岩气藏勘探理论,为以后的火山岩气藏勘探提供了研究方法参考。
Many gas-bearing volcanic reservoirs were discovered in Xujiaweizi Fault Depression of northern Songliao Basin,especially in Yingcheng ⅠFormation.The lithology of the volcanic rock is mainly dominated by the spatial overriding of multi-eruption facies and effusion facies.Early exploration shows that the widely distributed natural gas reservoirs was greatly controlled by developed paleo-craters and areal structure.Eruption facies and effusion facies around volcanic vent,relative high position of local structure and areas near fracture were thought to be prospective exploration areas.The physical properties of volcanic rock were not controlled by the burial depth.Water layer appearing in every gas bearing reservoir at different sea-level elevation,which means the gas reservoir boundary is controlled by lithology.Comprehensive analysis results indicate that the gas reservoir type belongs to litho-structural reservoir.Since the exploration work focusing on volcanic rock is very hard,little could be referred from the rarely reported effective and mature methods both at home and in abroad.Combining with the exploration process to the gas bearing volcanic reservoirs of the Yingcheng ⅠFormation in Xujiaweizi Fault Depression,northern Songliao Basin,the authors proposed a volcanic reservoir exploration method,which enriches the volcanic exploration theory and offers analytical references to the further volcanic reservoir exploration work.
Many gas-bearing volcanic reservoirs were discovered in Xujiaweizi Fault Depression of northern Songliao Basin,especially in Yingcheng ⅠFormation.The lithology of the volcanic rock is mainly dominated by the spatial overriding of multi-eruption facies and effusion facies.Early exploration shows that the widely distributed natural gas reservoirs was greatly controlled by developed paleo-craters and areal structure.Eruption facies and effusion facies around volcanic vent,relative high position of local structure and areas near fracture were thought to be prospective exploration areas.The physical properties of volcanic rock were not controlled by the burial depth.Water layer appearing in every gas bearing reservoir at different sea-level elevation,which means the gas reservoir boundary is controlled by lithology.Comprehensive analysis results indicate that the gas reservoir type belongs to litho-structural reservoir.Since the exploration work focusing on volcanic rock is very hard,little could be referred from the rarely reported effective and mature methods both at home and in abroad.Combining with the exploration process to the gas bearing volcanic reservoirs of the Yingcheng ⅠFormation in Xujiaweizi Fault Depression,northern Songliao Basin,the authors proposed a volcanic reservoir exploration method,which enriches the volcanic exploration theory and offers analytical references to the further volcanic reservoir exploration work.
引文
[1]侯启军,冯志强,林铁锋.大庆探区油气勘探新进展[J].大庆石油地质与开发,2004,23(5):4-9.
[2]任延广,朱德丰,万传彪.松辽盆地徐家围子断陷天然气聚集规律及下步勘探方向[J].大庆石油地质与开发,2004,23(5):26-29.
[3]付广,石巍.徐家围子地区深层天然气成藏机制及有利勘探区预测[J].大庆石油地质与开发,2006,25(3):23-26.
[4]何玉前,陈志德,周振兴,等.海拉尔盆地铜钵庙南地区三维地震资料叠前深度偏移处理[J].大庆石油地质与开发,2005,24(6):90-92.
[5]JIANG Chuan-jin,CHEN Shu-m in,ZHANG Er-hua,et al.Methodologyand application of seism ic pred iction of gas-bearing volcan ic reservoir[J].SEG Denver,Colorado,2004,74:1599-1602.
[6]王玉华,厉玉乐,杨峰平.创新技术,突破瓶颈,为勘探大发展提供强力支撑[J].大庆石油地质与开发,2006,25(1):14-16.
[2]任延广,朱德丰,万传彪.松辽盆地徐家围子断陷天然气聚集规律及下步勘探方向[J].大庆石油地质与开发,2004,23(5):26-29.
[3]付广,石巍.徐家围子地区深层天然气成藏机制及有利勘探区预测[J].大庆石油地质与开发,2006,25(3):23-26.
[4]何玉前,陈志德,周振兴,等.海拉尔盆地铜钵庙南地区三维地震资料叠前深度偏移处理[J].大庆石油地质与开发,2005,24(6):90-92.
[5]JIANG Chuan-jin,CHEN Shu-m in,ZHANG Er-hua,et al.Methodologyand application of seism ic pred iction of gas-bearing volcan ic reservoir[J].SEG Denver,Colorado,2004,74:1599-1602.
[6]王玉华,厉玉乐,杨峰平.创新技术,突破瓶颈,为勘探大发展提供强力支撑[J].大庆石油地质与开发,2006,25(1):14-16.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心