徐深气田徐深21区块火山岩储层预测与分类
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摘要
松辽盆地徐深气田徐深21区块火山岩储层地质情况复杂,井间岩性、岩相变化快,储层横向不连续,非均质性强,气水关系极其复杂,常规的地震反演方法不能有效地反映火山岩储层变化特征。采用优选的拟声波重构密度反演和高斯配置协模拟密度反演相结合方案,对该区火山岩储层进行定量预测,预测结果与井对比符合率较高,效果较好。在此基础上根据储层分类标准进行了火山岩储层分类预测,结论认为:徐深21区块火山岩储层类型以Ⅱ、Ⅲ类储层为主,Ⅰ类储层局部发育。
The volcanic reservoirs in the block Xushen-21 of Xushen gas field are characterized by complex geologic conditions,rapid change of interwell lithology and lithofacies,lateral discontinuity,strong heterogeneity,and complicated gas-water contact,thus conventional seismic inversion methods cannot effectively capture the changes of the volcanic reservoirs.Two density inversion methodologies of Pseudo-acoustic Impedance and Sequential Gaussian Collocated Co-simulation(SGCCS)were integrated to quantitatively predict the volcanic reservoirs in the study area.The prediction results match the well data quite well.On the basis of the prediction results,the volcanic reservoirs were classified according to the reservoir classification criteria.It is believed that volcanic reservoirs of type-Ⅱ and type-Ⅲ predominate in the block Xushen-21,while the reservoirs of type-Ⅰare partly distributed.
The volcanic reservoirs in the block Xushen-21 of Xushen gas field are characterized by complex geologic conditions,rapid change of interwell lithology and lithofacies,lateral discontinuity,strong heterogeneity,and complicated gas-water contact,thus conventional seismic inversion methods cannot effectively capture the changes of the volcanic reservoirs.Two density inversion methodologies of Pseudo-acoustic Impedance and Sequential Gaussian Collocated Co-simulation(SGCCS)were integrated to quantitatively predict the volcanic reservoirs in the study area.The prediction results match the well data quite well.On the basis of the prediction results,the volcanic reservoirs were classified according to the reservoir classification criteria.It is believed that volcanic reservoirs of type-Ⅱ and type-Ⅲ predominate in the block Xushen-21,while the reservoirs of type-Ⅰare partly distributed.
引文
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[3]刘启,舒萍,李松光.松辽盆地北部深层火山岩气藏综合描述技术[J].大庆石油地质与开发,2005,24(3):21-23.
[4]蒙启安,门广田,张正和.松辽盆地深层火山岩体、岩相预测方法及应用效果[J].大庆石油地质与开发,2001,20(2):11-14.
[5]宋宗平,姜传金,杨耀坤.兴城—丰乐地区深层火山岩储层识别[J].天然气工业,2007,27(8):28-30.
[6]王璞-,王树学,曲水宝,等.松辽盆地火山事件研究——营城组火山岩特征[J].长春科技大学学报,1999,29(增刊):50-54.
[7]王璞-,陈树民,刘万洙,等.松辽盆地火山岩相与火山岩储层的关系[J].石油与天然气地质,2003,24(1):18-27.
[8]彭传圣,张善文,王永诗,等.罗家地区砾岩体储集层分类综合评价[J].油气地质与采收率,2003,10(6):18-27.
[9]姜传金,冯肖宇,詹怡捷.松辽盆地北部徐家围子断陷火山岩气藏勘探新技术[J].大庆石油地质与开发,2007,26(4):133-137.
[10]王贵文,惠山,付广.徐家围子断陷天然气分布规律及其主控因素[J].大庆石油地质与开发,2008,27(1):6-9.
[11]高兴有.三肇凹陷葡萄花油层油气运聚成藏模式[J].大庆石油地质与开发,2008,27(2):4-8.
[12]舒平,纪学雁,丁日新.徐深气田火山岩储层的裂缝特征研究[J].大庆石油地质与开发,2008,27(1):13-17.
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