流体替代技术在北黄海盆地中生界含烃储层识别中的应用
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摘要
北黄海盆地中生界勘探目的层以陆相碎屑岩储层为主,埋藏较深,受沉积压实和胶结成岩作用的影响,储层物性较差,含油气有利储层识别难度较大。利用流体替代技术,依据已建立的岩石物理模型,结合实际流体温度、压力等参数,对特定泥质含量、孔隙度条件下储层弹性响应特征随不同流体饱和度的变化规律进行正演计算,从而建立了含油气有利储层的弹性参数刻画范围。研究结果表明,对于孔隙度>8%的物性相对较好的砂岩储层,其中含水的弹性属性与含油的弹性属性有一定的差别,而储层中含气的弹性属性与含油的弹性属性差别较为明显。因此,在研究区可以应用测量的纵波阻抗和模拟的纵横波速比建立含烃储层的解释框架,并利用叠前反演技术对研究区内物性较好有利储层作出预测。
In the North Yellow Sea Basin,the targeted Mesozoic reservoirs mainly consisted of deep buried continental clastic rocks.Due to compaction and cementation,the Mesozoic reservoirs have lower porosity and permeability,which makes it more difficult to identify the favourable hydrocarbon reservoirs.This paper used the forward modeling to calculate the variation of elastic character with different fluid saturation under specific condition of shale content and porosity based on the petro-physical model and the measured fluid temperature and pressure.Thus,the range of elastic parameters of favorable reservoir is established.The results show that in the reservoirs with sandstone of better porosity(greater than 8%),the elastic attribute of reservoirs with water is different from that of reservoirs with oil,while the elastic attribute of reservoirs with gas is rather different from that of reservoirs with oil.So we can build the interpretation framework of hydrocarbon reservoirs using the measured primary wave impedance and simulated vp/vsratio.The favorable hydrocarbon reservoirs with better properties can be predicted using the pre-stack inversion technique.
In the North Yellow Sea Basin,the targeted Mesozoic reservoirs mainly consisted of deep buried continental clastic rocks.Due to compaction and cementation,the Mesozoic reservoirs have lower porosity and permeability,which makes it more difficult to identify the favourable hydrocarbon reservoirs.This paper used the forward modeling to calculate the variation of elastic character with different fluid saturation under specific condition of shale content and porosity based on the petro-physical model and the measured fluid temperature and pressure.Thus,the range of elastic parameters of favorable reservoir is established.The results show that in the reservoirs with sandstone of better porosity(greater than 8%),the elastic attribute of reservoirs with water is different from that of reservoirs with oil,while the elastic attribute of reservoirs with gas is rather different from that of reservoirs with oil.So we can build the interpretation framework of hydrocarbon reservoirs using the measured primary wave impedance and simulated vp/vsratio.The favorable hydrocarbon reservoirs with better properties can be predicted using the pre-stack inversion technique.
引文
甘利灯,赵邦六,杜文辉,等,2005.弹性阻抗在岩性与流体预测中的潜力分析[J].石油物探,44(5):504-508.
郝晓红,王闯,谢春雨,2008.流体替代技术及应用分析[J].海洋石油,28(3):1-5.
黄饶,刘志斌,2013.叠前同时反演在砂岩油藏预测中的应用[J].地球物理学进展,28(1):380-386.
李文勇,李东旭,夏斌,等,2006.北黄海盆地构造演化特征分析[J].现代地质,20(2):268-276.
李维新,王红,姚振兴,等,2009.基于约束条件横波速度反演和流体替代[J].地球物理学报,52(3):785-791.
李文勇,曾祥辉,黄家坚,2009.北黄海中、新生代盆地:残留盆地还是叠合盆地?[J].地质学报,83(9):1269-1274.
李中元,冯兴强,2012.基于流体替换的横波速度反演[J].石油天然气学报,34(7):98-102.
刘金萍,王嘹亮,李洋,等,2013.基于曲线重构的测井约束反演在中生界储层预测中的应用[J].石油天然气学报,35(2):105-110.
刘金萍,王嘹亮,简晓玲,等,2015.叠前同步反演技术在北黄海盆地中生界储层预测中的应用[J].海洋地质与第四纪地质,35(4):141-148.
乔玉雷,2011.孔隙流体对岩石物理弹性参数的影响及敏感属性参数优选:以济阳坳陷为例[J].油气地质与采收率,18(3):39-43.王强,王应斌,张友,2010.北黄海东部坳陷中生界储层特征[J].沉积与特提斯地质,30(4):97-103.
周水生,张波,伍向阳,2009.流体替换方法研究及应用分析[J].地球物理学进展,24(5):1660-1664.
CONNOLLY P,1999.Elastic impedance[J].The Leading Edge,18(4):438-452.
GASSMANN F,1951.Elastic waves through a packing of spheres[J].Geophysics,16(4):673-685.
HAMPSON D P,RUSSELL B H,BANKHEAD B,2005.Simultaneous inversion of pre-stack seismic data[C]//75th annual international meeting SEG,Expanded Abstracts.Tulsa,OK,USA:Society of Exploration Geophysicists,1633-1637.
郝晓红,王闯,谢春雨,2008.流体替代技术及应用分析[J].海洋石油,28(3):1-5.
黄饶,刘志斌,2013.叠前同时反演在砂岩油藏预测中的应用[J].地球物理学进展,28(1):380-386.
李文勇,李东旭,夏斌,等,2006.北黄海盆地构造演化特征分析[J].现代地质,20(2):268-276.
李维新,王红,姚振兴,等,2009.基于约束条件横波速度反演和流体替代[J].地球物理学报,52(3):785-791.
李文勇,曾祥辉,黄家坚,2009.北黄海中、新生代盆地:残留盆地还是叠合盆地?[J].地质学报,83(9):1269-1274.
李中元,冯兴强,2012.基于流体替换的横波速度反演[J].石油天然气学报,34(7):98-102.
刘金萍,王嘹亮,李洋,等,2013.基于曲线重构的测井约束反演在中生界储层预测中的应用[J].石油天然气学报,35(2):105-110.
刘金萍,王嘹亮,简晓玲,等,2015.叠前同步反演技术在北黄海盆地中生界储层预测中的应用[J].海洋地质与第四纪地质,35(4):141-148.
乔玉雷,2011.孔隙流体对岩石物理弹性参数的影响及敏感属性参数优选:以济阳坳陷为例[J].油气地质与采收率,18(3):39-43.王强,王应斌,张友,2010.北黄海东部坳陷中生界储层特征[J].沉积与特提斯地质,30(4):97-103.
周水生,张波,伍向阳,2009.流体替换方法研究及应用分析[J].地球物理学进展,24(5):1660-1664.
CONNOLLY P,1999.Elastic impedance[J].The Leading Edge,18(4):438-452.
GASSMANN F,1951.Elastic waves through a packing of spheres[J].Geophysics,16(4):673-685.
HAMPSON D P,RUSSELL B H,BANKHEAD B,2005.Simultaneous inversion of pre-stack seismic data[C]//75th annual international meeting SEG,Expanded Abstracts.Tulsa,OK,USA:Society of Exploration Geophysicists,1633-1637.