新场地区三维三分量地震勘探实践
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摘要
新场地区须家河组气藏深层致密储层孔隙度和渗透率低,含气层与围岩之间的地震响应差异小,如何利用有效的地球物理信息进行储层含气性检测及流体判别是该区深层勘探的关键。进行了须家河组地层的转换波各向异性测试,结果表明该地层具有明显的各向异性特征,适宜进行三维三分量地震勘探。建立了多波微测井方法,制作了重锤横波震源,进行近地表探测试验,纵波和横波的近地表结构厚度不同,速度亦有明显差异。发展了多波地震资料处理的关键技术,确立了多波地震资料的处理流程。进行了储层识别和裂缝特征预测,建立了高渗区地震响应模式。分析纵波与横波单一属性参数及组合参数裂缝检测效果,形成了有效的综合含气检测指数,其高值区与多口高产井区吻合。
The deep tight reservoir of Xujiahe Gasfield in Xinchang area has low porosity and low permeability,the seismic response of gasbearing layers and bedrock has small difference.How to apply effective geophysical information to detect gas-bearing area and distinguish fluid is the key for the exploration of the area.Convertedwave anisotropy test shows that the target layer in Xujiahe Formation has obvious anisotropy,which is suitable for 3C3D exploration. Multi-wave uphole survey method was proposed and shear wave source was made to test near surface.The result shows that the thickness of near-surface structure from P-wave and S-wave are different,the velocity is also obviously different.The key technology for multi-wave data processing was developed and its workflow was identified to carry out reservoir recognition and fracture characteristics prediction,and establish seismic response pattern of high-permeability area.By analyzing the detection result of fracture by single parameter or combination parameters of P-wave and Swave, effective integrated gas-bearing detection indexes were formed,and their high value area coincides with several high-production well areas.
The deep tight reservoir of Xujiahe Gasfield in Xinchang area has low porosity and low permeability,the seismic response of gasbearing layers and bedrock has small difference.How to apply effective geophysical information to detect gas-bearing area and distinguish fluid is the key for the exploration of the area.Convertedwave anisotropy test shows that the target layer in Xujiahe Formation has obvious anisotropy,which is suitable for 3C3D exploration. Multi-wave uphole survey method was proposed and shear wave source was made to test near surface.The result shows that the thickness of near-surface structure from P-wave and S-wave are different,the velocity is also obviously different.The key technology for multi-wave data processing was developed and its workflow was identified to carry out reservoir recognition and fracture characteristics prediction,and establish seismic response pattern of high-permeability area.By analyzing the detection result of fracture by single parameter or combination parameters of P-wave and Swave, effective integrated gas-bearing detection indexes were formed,and their high value area coincides with several high-production well areas.
引文
[1]赵殿栋.高精度三维地震勘探技术发展回顾与展望[J].石油物探,2009,48(5):425-435
[2]苏锦义,刘殊.川西坳陷须家河组二段气藏地震相特征应用[J].石油物探,2008,47(2):167-171
[3]范菊芬.川西坳陷雷口坡组气藏勘探远景区预测[J].石油物探,2009,48(4):417-424
[4]甘其刚,许多.川西深层致密碎屑岩气藏储层预测方法[J].石油物探,2008,47(6):593-597
[5]叶泰然,苏锦义,刘兴艳.分频解释技术在川西砂岩储层预测中的应用[J].石油物探,2008,47(2): 167-171
[6]程冰洁,徐天吉.转换波资料在川西坳陷储层预测中的应用[J].石油物探,2009,48(2):181-186
[7]易维启,唐宗璜,宋吉杰.多波多分量地震勘探在松辽盆地的初步应用[J].石油地球物理勘探,1998,33 (5):663-670
[8]于世焕,丁伟,徐淑合,等.延迟震源技术在三维高分辨率地震勘探中的应用[J].石油物探,2004,43(2): 111-115
[9]唐建明,马昭军.宽方位三维三分量地震资料采集观测系统设计[J].石油物探,2007,46(3):310-318
[10]刘洋,魏修成,王长春,等.三维三分量地震勘探观测系统设计方法[J].石油地球物理勘探,2002,37(6): 550-555
[11]霍全明,程增庆,彭苏萍,等.一种经济高效的三维三分量观测系统设计方法[J].石油地球物理勘探, 2004,39(5):501-504
[12]徐仲达,孙波,唐宗璜.PP-SV转换波反射系数与野外采集观测系统设计[J].石油物探,1996,35(1):1-12
[13]张军华,朱焕,郑旭刚,等.宽方位角地震勘探技术评述[J].石油地球物理勘探,2007,42(5):604-609
[14]徐天吉,程冰洁,李显贵.频率与多尺度吸收属性应用研究[J].石油物探,2009,48(4):390-395
[15]李阳.油藏综合地球物理技术在垦71井区的应用[J].石油物探,2008,47(2):107-115
[16]于世焕,宋玉龙,刘美丽,等.句容地区VSPP转换波的研究[J].石油物探,2001,40(1):56-63
[17]王光杰,陈东,赵爱华,等.多波多分量地震探测技术[J].地球物理学进展,2000,15(1):54-60
[18]张永刚,王赟,王妙月,等.目前多分量地震勘探中的几个关键问题[J].地球物理学报,2004,47(1): 151-155
[19]王建民,付雷,张向君,等.多分量地震勘探技术在大庆探区的应用[J].石油地球物理勘探,2006,41(4): 426-430
[20]于世焕,赵殿栋,张振宇,等.PS20区块蒸汽驱试验区的地震监测方法[J].石油物探,2000,39(1):1-9
[2]苏锦义,刘殊.川西坳陷须家河组二段气藏地震相特征应用[J].石油物探,2008,47(2):167-171
[3]范菊芬.川西坳陷雷口坡组气藏勘探远景区预测[J].石油物探,2009,48(4):417-424
[4]甘其刚,许多.川西深层致密碎屑岩气藏储层预测方法[J].石油物探,2008,47(6):593-597
[5]叶泰然,苏锦义,刘兴艳.分频解释技术在川西砂岩储层预测中的应用[J].石油物探,2008,47(2): 167-171
[6]程冰洁,徐天吉.转换波资料在川西坳陷储层预测中的应用[J].石油物探,2009,48(2):181-186
[7]易维启,唐宗璜,宋吉杰.多波多分量地震勘探在松辽盆地的初步应用[J].石油地球物理勘探,1998,33 (5):663-670
[8]于世焕,丁伟,徐淑合,等.延迟震源技术在三维高分辨率地震勘探中的应用[J].石油物探,2004,43(2): 111-115
[9]唐建明,马昭军.宽方位三维三分量地震资料采集观测系统设计[J].石油物探,2007,46(3):310-318
[10]刘洋,魏修成,王长春,等.三维三分量地震勘探观测系统设计方法[J].石油地球物理勘探,2002,37(6): 550-555
[11]霍全明,程增庆,彭苏萍,等.一种经济高效的三维三分量观测系统设计方法[J].石油地球物理勘探, 2004,39(5):501-504
[12]徐仲达,孙波,唐宗璜.PP-SV转换波反射系数与野外采集观测系统设计[J].石油物探,1996,35(1):1-12
[13]张军华,朱焕,郑旭刚,等.宽方位角地震勘探技术评述[J].石油地球物理勘探,2007,42(5):604-609
[14]徐天吉,程冰洁,李显贵.频率与多尺度吸收属性应用研究[J].石油物探,2009,48(4):390-395
[15]李阳.油藏综合地球物理技术在垦71井区的应用[J].石油物探,2008,47(2):107-115
[16]于世焕,宋玉龙,刘美丽,等.句容地区VSPP转换波的研究[J].石油物探,2001,40(1):56-63
[17]王光杰,陈东,赵爱华,等.多波多分量地震探测技术[J].地球物理学进展,2000,15(1):54-60
[18]张永刚,王赟,王妙月,等.目前多分量地震勘探中的几个关键问题[J].地球物理学报,2004,47(1): 151-155
[19]王建民,付雷,张向君,等.多分量地震勘探技术在大庆探区的应用[J].石油地球物理勘探,2006,41(4): 426-430
[20]于世焕,赵殿栋,张振宇,等.PS20区块蒸汽驱试验区的地震监测方法[J].石油物探,2000,39(1):1-9
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