川南官渡构造茅口组精细构造解释与有利储层分布
|
摘要
四川盆地官渡地区茅口组为缝洞型储层,其储层的发育受断层、裂缝和溶蚀洞穴发育的控制。利用研究区最新采集处理的三维地震资料,通过地震资料品质分析,认为该资料具有较高的信噪比,偏移归位合理,目的层波组特征明显,能较好地解决构造问题。在合成记录标定的基础上,搭建格架剖面并进行人工解释,然后采用人机联合波形对比层位自动追踪技术进行全区层位解释,采用相干、倾角扫描以及层面光滑度分析技术进行断层平面组合分析,落实了研究区的构造特征和断层展布特征。根据对构造特征和断层展布特征的分析,指出官北构造东翼、官中和官南构造西翼为可能的缝洞型储层发育区。
The Lower Permian Maokou Formation of the Guandu structure in South Sichuan Basin is a fractured-vuggy reservoir.The development of the reservoir is controlled by faults,fractures and cavities.Based on the latest acquisitive and processing data of 3-D seismic and the analysis of the quality of the seismic data,the authors believe that the data have a higher signal to noise ratio,a reasonable prestack time migration,and obvious characteristics of waves in the target layer,and so they can solve the problem of the structure easily.Based on the calibration of synthetic seismogram,the authors establish the framework section and do the artificial interpretation.Then they explain all the horizons,by using human-computer interaction during the waveform contrast in horizon auto tracking,do fine analyses of combination of fault plane by using the coherent,dip-scanning and smoothness level analysis,and then recognize the characteristics of the structure and distribution characteristics of the fault.Finally,based on the analysis of the characteristics of the structure and distribution characteristics of the fault,the authors point out that the east of the northern Guandu structure,the west of the central Guandu structure and the southern Guandu structure might be the area of fractured-vuggy reservoirs.
The Lower Permian Maokou Formation of the Guandu structure in South Sichuan Basin is a fractured-vuggy reservoir.The development of the reservoir is controlled by faults,fractures and cavities.Based on the latest acquisitive and processing data of 3-D seismic and the analysis of the quality of the seismic data,the authors believe that the data have a higher signal to noise ratio,a reasonable prestack time migration,and obvious characteristics of waves in the target layer,and so they can solve the problem of the structure easily.Based on the calibration of synthetic seismogram,the authors establish the framework section and do the artificial interpretation.Then they explain all the horizons,by using human-computer interaction during the waveform contrast in horizon auto tracking,do fine analyses of combination of fault plane by using the coherent,dip-scanning and smoothness level analysis,and then recognize the characteristics of the structure and distribution characteristics of the fault.Finally,based on the analysis of the characteristics of the structure and distribution characteristics of the fault,the authors point out that the east of the northern Guandu structure,the west of the central Guandu structure and the southern Guandu structure might be the area of fractured-vuggy reservoirs.
引文
[1]胡明,秦启荣,李昌全.贵州赤水地区构造特征及与裂缝发育关系研究[J].西南石油学院学报,2006,28(1):13-17.
[2]康沛泉.赤水地区阳新统古岩溶[J].贵州地质,2000,17(2):92-98.
[3]苏培东,秦启荣,黄润秋.储层裂缝预测研究现状与展望[J].西南石油学院学报,2005,27(5):14-17.
[4]曹刚,李其荣,安辉.川南地区下二叠统茅口组“岩溶型气藏”地震、地质特征探讨[J].天然气地球科学,1999,10(3-4):76-82.
[5]谢刚平,夏斌,王良军,等.赤水凹陷浅层碎屑岩天然气成藏条件及勘探潜力[J].西南石油大学学报:自然科学版,2008,30(3):37-41.
[6]李玲,王小善,李凤杰.全三维解释方法探讨与实践[J].石油地球物理勘探,1996,31(4):495-508.
[7]BAHORICH M,FARMER S.3D seismic discontinu-ity for faults and stratigraphic features:The coher-ence cube[J].The Leading Edge,1995,14(10):1053-1058.
[8]MARFURT K J,KIRLIN R L,STEVEN L,et al.3D seismic at attributes using a semblance-basedcoherency algorithm[J].Geophysics,1998,63(4):1150-1165.
[9]WARD R W.Seismic interpretation today and tomor-row[J].The Leading Edge,1992,11(11):11-15.
[10]GERALD D K.Fundamentals of 3-D seismic volumevisualization[J].The Leading Edge,1999,18(6):702-709.
[2]康沛泉.赤水地区阳新统古岩溶[J].贵州地质,2000,17(2):92-98.
[3]苏培东,秦启荣,黄润秋.储层裂缝预测研究现状与展望[J].西南石油学院学报,2005,27(5):14-17.
[4]曹刚,李其荣,安辉.川南地区下二叠统茅口组“岩溶型气藏”地震、地质特征探讨[J].天然气地球科学,1999,10(3-4):76-82.
[5]谢刚平,夏斌,王良军,等.赤水凹陷浅层碎屑岩天然气成藏条件及勘探潜力[J].西南石油大学学报:自然科学版,2008,30(3):37-41.
[6]李玲,王小善,李凤杰.全三维解释方法探讨与实践[J].石油地球物理勘探,1996,31(4):495-508.
[7]BAHORICH M,FARMER S.3D seismic discontinu-ity for faults and stratigraphic features:The coher-ence cube[J].The Leading Edge,1995,14(10):1053-1058.
[8]MARFURT K J,KIRLIN R L,STEVEN L,et al.3D seismic at attributes using a semblance-basedcoherency algorithm[J].Geophysics,1998,63(4):1150-1165.
[9]WARD R W.Seismic interpretation today and tomor-row[J].The Leading Edge,1992,11(11):11-15.
[10]GERALD D K.Fundamentals of 3-D seismic volumevisualization[J].The Leading Edge,1999,18(6):702-709.
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