松辽盆地北部登娄库组二段烃源岩分布定量研究
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摘要
勘探开发初期有限的油气资源评价资料限制了暗色泥岩预测方法的可靠性,松辽盆地北部登娄库组烃源岩主要为登二段灰色泥岩,其分布情况是评价松辽盆地北部深层致密砂岩气藏资源量的重要基础。本文以井震信息和基于沉积特征的多元地震属性定量方法,预测研究区泥岩厚度平面分布;综合地层沉积厚度平面信息、地震相平面信息及井点暗色泥岩和泥岩厚度比值信息,预测全区暗色泥岩和泥岩厚度比值的平面分布;预测结果显示松辽盆地北部登二段烃源岩主要有3个较大的发育,同时伴有其它零星小范围暗色泥岩发育,大部分厚度分布在70 m以下,最大暗色泥岩预测厚度约为350 m。该方法以井震信息为基础结合沉积规律定量预测暗色泥岩分布,为松辽盆地北部深层致密砂岩气藏资源量的可靠评价提供了必要的基础。
Limited oil and gas resource evaluation data in the early exploration stage limits the reliability of dark mudstone forecast method.The main hydrocarbon source rocks of Denglouku formation in northern part of Songliao Basin is K_1d~2 gray mudstone,its distribution is an important foundation of resources evaluation of deep tight sandstone gas reservoirs in the northern Songliao Basin.This study combined well to seismic information using quantitative multicomponent seismic attributes forecast method based on the deposition characteristics to predict mudstone thickness plane distribution in the study area;then consolidated strata deposited thickness plane information,plane information of seismic facies interpretation and well point dark mudstone and shale thickness ratio predict the region plane distribution of dark mudstone and shale thickness ratio;Finally,using seismic prediction of mudstone thickness and the region plane distribution of dark mudstone and shale thickness ratio,we get the plane prediction result of dark mudstone.Prediction results show that there are three large development period of hydrocarbon source rocks of K_1d~2 black mudstone in Songliao Basin accompanied by other scattered small range of dark mudstone development period,and most of the thickness of those mudstone are less than 70 m,while the biggest thickness is about 350 m.This method,which based on the well to seismic information and combines the deposit rule to quantitative prediction the distribution of dark mudstone,provides necessary foundation for the reliable evaluation of the resource extent of deep tight sand gas reservoir in northern Songliao Basin.
Limited oil and gas resource evaluation data in the early exploration stage limits the reliability of dark mudstone forecast method.The main hydrocarbon source rocks of Denglouku formation in northern part of Songliao Basin is K_1d~2 gray mudstone,its distribution is an important foundation of resources evaluation of deep tight sandstone gas reservoirs in the northern Songliao Basin.This study combined well to seismic information using quantitative multicomponent seismic attributes forecast method based on the deposition characteristics to predict mudstone thickness plane distribution in the study area;then consolidated strata deposited thickness plane information,plane information of seismic facies interpretation and well point dark mudstone and shale thickness ratio predict the region plane distribution of dark mudstone and shale thickness ratio;Finally,using seismic prediction of mudstone thickness and the region plane distribution of dark mudstone and shale thickness ratio,we get the plane prediction result of dark mudstone.Prediction results show that there are three large development period of hydrocarbon source rocks of K_1d~2 black mudstone in Songliao Basin accompanied by other scattered small range of dark mudstone development period,and most of the thickness of those mudstone are less than 70 m,while the biggest thickness is about 350 m.This method,which based on the well to seismic information and combines the deposit rule to quantitative prediction the distribution of dark mudstone,provides necessary foundation for the reliable evaluation of the resource extent of deep tight sand gas reservoir in northern Songliao Basin.
引文
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于建国,韩文功,于正军等.2005.济阳坳陷孔店组烃源岩的地震预测方法.石油地球物理勘探,40(3):318-321.Yu Jianguo,Han Wengong,Yu Zhengjun et al.2005.The seismic prediction method of Kongdian Formation source rock in Jiyang depression.Oil Geophysical Prospecting,40(3):318-321,338.
张学娟,卢双舫,贾承造.2012.基于沉积特征分区域的多元地震属性储层定量预测方法.石油地球物理勘探,47(1):115-120.Zhang Xuejuan.Lu Shuangfang and Jia Chengzao.2012.The regional multiple seismic attribute quantitative reservoir prediction method based on sedimentary characteristics.Oil Geopkysical Prospecting,47(1):115-120.
赵胜.2007.布日敦南凹陷地震层序分析与烃源岩早期预测.小型油气藏,12(3):36-40.Zhao Sheng.2007.Seismic sequence analyses and hydrocarbon source rock early forecast of the south sag in Buridun.Small Hydrocarbon Reservoirs,12(3):36-40.
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Peters K E,Magoon L B,Bird K J et al.2006.North Slope,Alaska:Source rock distribution,richness,thermal maturity,and petroleum charge.AAPG Bulletin,90(2):261-292.
Weimer P and Link M H.1992.Seismic Facies and Sedimentary Processes of Submarine Fans and Turbidite Systems.New York:Springer-Verlag.1-462.
顾礼敬,徐守余,苏劲等.2011.利用地震资料预测和评价烃源岩.天然气地球科学,22(3):554-560.Cu Lijing.Xu Shouyu.Su Jin et al.2011.Muddy hydrocarbon source rock prediction and evaluation with seismic data.Natual Gas Geoscience,22(3):554-560.
李纯泉.2005.松辽盆地北部徐家围子断陷区深层天然气成藏研究(博士学位论文).杭州:浙江大学:5-28.Li Chunquan.2005.Study on the Deep Cas Accumulation in the Xujiaweizi Rift Region,Northern Songliao Basin(PhD Thesis).Hangzhou:Zhejiang University.5-28.
刘震,常迈,赵阳等.2007.低勘探程度盆地烃源岩早期预测方法研究.地学前缘,14(4):159-167.Liu Zhen,Chang Mai,Zhao Yang et al.2007.Method of early pre-diction on source rocks in basins with low exploration activity.Earth Science Frontiers,14(4):159-167.
马行陟,庞雄奇,姜福杰等.2011.辽东湾地区下第三系有效烃源岩分布定量研究.西南石油大学学报(自然科学版),33(1):64-70.Ma Xingzhi,Pang Xiongqi,Jing Fujie et al.2011.Quantitative research on effective source rocks of Palaeogene Shahejie Formation in Liaodong bay area.Journal of Southwest Petroleum University(Science&Technology Edition).33(1):64-70.
米立军,刘震,张功成等.2007.南海北部深水区白云凹陷古近系烃源岩的早期预测.沉报学报,25(1):139-146.MiLijun,Liu Zhen,Zhang Gongcheng et al.2007.Early forecast and evaluation study on chief source rock in Baiyun depression.Acta Sedimentologica Sinica,25(1):139-146.
王志宏,罗霞,李景坤等.2008.松辽盆地北部深层有效烃源岩分布预测,天然气地球科学,19(2):204-209.Wang Zhihong,Luo Xia,Li Jingkun et al.2008.Effective source rock forecasting in deep layers of northern Songliao Basin.Natural Gas Geoscience,19(2):204-209.
于建国,韩文功,于正军等.2005.济阳坳陷孔店组烃源岩的地震预测方法.石油地球物理勘探,40(3):318-321.Yu Jianguo,Han Wengong,Yu Zhengjun et al.2005.The seismic prediction method of Kongdian Formation source rock in Jiyang depression.Oil Geophysical Prospecting,40(3):318-321,338.
张学娟,卢双舫,贾承造.2012.基于沉积特征分区域的多元地震属性储层定量预测方法.石油地球物理勘探,47(1):115-120.Zhang Xuejuan.Lu Shuangfang and Jia Chengzao.2012.The regional multiple seismic attribute quantitative reservoir prediction method based on sedimentary characteristics.Oil Geopkysical Prospecting,47(1):115-120.
赵胜.2007.布日敦南凹陷地震层序分析与烃源岩早期预测.小型油气藏,12(3):36-40.Zhao Sheng.2007.Seismic sequence analyses and hydrocarbon source rock early forecast of the south sag in Buridun.Small Hydrocarbon Reservoirs,12(3):36-40.
Harris N B.2005.The Deposition of Organic-Carbon-Rich Sediments:Models,Mechanisms,and Consequences.SEPM(Society for Sedimentary Geology).1-282.
Hue A Y.1990.Deposition of Organic Facies.American Association of Petroleum Geologists.1-234.
Peters K E,Magoon L B,Bird K J et al.2006.North Slope,Alaska:Source rock distribution,richness,thermal maturity,and petroleum charge.AAPG Bulletin,90(2):261-292.
Weimer P and Link M H.1992.Seismic Facies and Sedimentary Processes of Submarine Fans and Turbidite Systems.New York:Springer-Verlag.1-462.
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