辽东湾31-6区块隐蔽油气藏的地球物理识别
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摘要
辽东湾探区的隐蔽油气藏勘探既有成功的例子,也有失败的例子,说明识别隐蔽油气藏有很大的难度。为此本文提出了一套开展辽东湾地区隐蔽油气藏勘探的地球物理识别技术流程。在研究中,首先利用岩石物理测试数据建立岩石物理模型进行横波速度反演,再通过沉积规律研究、地震相分析、时频分析等研究成果确定隐蔽油气发育带;在横波速度反演的基础上,通过弹性波阻抗反演进行岩性预测,有效地识别储层;在砂体识别基础上,利用AVO属性分析、吸收分析、多属性分析等方法综合分析储层的含油气性。利用这套识别技术对 31—6a目标进行了储层和含气性预测,认为该目标为含气圈闭。
The exploration of subtle oil/gas reservoirs in Liaodong Bay zone has both successful cases and failure cases, showing the difficulty in recognition of subtle oil/gas reservoirs. For that reason, the paper presented a set of technical flows of geophysical recognition for developing the exploration of subtle oil/gas reservoirs in Liaodong Bay area. During the study, we firstly used physical test data of rocks to build up petrophysical model and to conduct inversion of S-wave velocity, then, defined the developed zones of subtle oil/gas reservoirs by the studied results of sedimentary rule, analysis of seismic facies and time-frequency analysis etc; conducted lithologic prediction for effective recognition of reservoirs by inversion of elastic wave impedance on the basis of inversion of S-wave velocity; comprehensively studied the oil/gas-bearing a-bility of reservoirs by using analysis of AVO attributes, analysis of absorption and multi-attributes analysis. By using this set of recognizing techniques to predict the reservoirs and gas-bearing possibility of 31-6a target, we consider that the target is gas-bearing trap.
The exploration of subtle oil/gas reservoirs in Liaodong Bay zone has both successful cases and failure cases, showing the difficulty in recognition of subtle oil/gas reservoirs. For that reason, the paper presented a set of technical flows of geophysical recognition for developing the exploration of subtle oil/gas reservoirs in Liaodong Bay area. During the study, we firstly used physical test data of rocks to build up petrophysical model and to conduct inversion of S-wave velocity, then, defined the developed zones of subtle oil/gas reservoirs by the studied results of sedimentary rule, analysis of seismic facies and time-frequency analysis etc; conducted lithologic prediction for effective recognition of reservoirs by inversion of elastic wave impedance on the basis of inversion of S-wave velocity; comprehensively studied the oil/gas-bearing a-bility of reservoirs by using analysis of AVO attributes, analysis of absorption and multi-attributes analysis. By using this set of recognizing techniques to predict the reservoirs and gas-bearing possibility of 31-6a target, we consider that the target is gas-bearing trap.
引文
[1]凌云研究组．一种被开发证实的隐蔽油气藏解释实 例．石油地球物理勘探,2005,40(1):52～57
[2]王焕弟,牛滨华,任敦占等．隐蔽油气藏勘探现状与 对策分析．石油地球物理勘探,2004,39(6):739～ 744
[3] Hill R. The elastic behavior of crystalline aggregate. Pro Phys Soc, 1952, A65:349~354
[4] Hashin Z, Shtrikman S. A variational approach to the elastic behavior of multiphase materials. J Mech Phys Solid, 1963, 11: 127-140
[5] Wood A M. A textbook of sound. New York : The MacMillan Co, 1955, 360~360
[6] Gassmann F. Elastic waves through a packing of spheres. Geophysics. 1951, 16(5): 673~685
[7] Boit M A. Mechanics of deformation and acoustic propagation in porous media. J Appl Phys , 1962, 33 (4): 1482-1498
[8]李景叶,陈小宏．用改进的模拟退火算法进行叠后时 移地震数据反演．石油地球物理勘探,2003,38(4): 392～395
[9]吴国忱,糠仁华,印兴耀．三维时频分析方法在地震 层序中的应用．石油大学学报,2000,24(1):81～84
[10]刘传虎,刘福贵,李卫忠．时频分析方法及在储层预 测中的应用．石油地球物理勘探,1996,31(增刊1): 11～20
[11]凌云研究组．叠后相对保持振幅处理研究．石油地球 物理勘探,2003,38(5):501～506
[12]凌云研究组．叠前相对保持振幅、频率、相位和波形的 地震数据处理与评价研究．石油地球物理勘探,2003, 38(5):543～552
[13]邓启才,秦瑞宝,李维新等．莺歌湾盆地A区新近系 地震初层预测及含油气性检测相关岩石物理参数研 究．中国海上油气2004,16(5):306～308
[14]崔永谦,武耀辉,罗宁等．岩性地层油气藏勘探技术． 勘探技术,2004,3:17～24
[2]王焕弟,牛滨华,任敦占等．隐蔽油气藏勘探现状与 对策分析．石油地球物理勘探,2004,39(6):739～ 744
[3] Hill R. The elastic behavior of crystalline aggregate. Pro Phys Soc, 1952, A65:349~354
[4] Hashin Z, Shtrikman S. A variational approach to the elastic behavior of multiphase materials. J Mech Phys Solid, 1963, 11: 127-140
[5] Wood A M. A textbook of sound. New York : The MacMillan Co, 1955, 360~360
[6] Gassmann F. Elastic waves through a packing of spheres. Geophysics. 1951, 16(5): 673~685
[7] Boit M A. Mechanics of deformation and acoustic propagation in porous media. J Appl Phys , 1962, 33 (4): 1482-1498
[8]李景叶,陈小宏．用改进的模拟退火算法进行叠后时 移地震数据反演．石油地球物理勘探,2003,38(4): 392～395
[9]吴国忱,糠仁华,印兴耀．三维时频分析方法在地震 层序中的应用．石油大学学报,2000,24(1):81～84
[10]刘传虎,刘福贵,李卫忠．时频分析方法及在储层预 测中的应用．石油地球物理勘探,1996,31(增刊1): 11～20
[11]凌云研究组．叠后相对保持振幅处理研究．石油地球 物理勘探,2003,38(5):501～506
[12]凌云研究组．叠前相对保持振幅、频率、相位和波形的 地震数据处理与评价研究．石油地球物理勘探,2003, 38(5):543～552
[13]邓启才,秦瑞宝,李维新等．莺歌湾盆地A区新近系 地震初层预测及含油气性检测相关岩石物理参数研 究．中国海上油气2004,16(5):306～308
[14]崔永谦,武耀辉,罗宁等．岩性地层油气藏勘探技术． 勘探技术,2004,3:17～24
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