也门71区山地激发技术
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摘要
也门71区山地地质条件复杂,基岩裸露,激发条件差。提高山地资料品质,是改善地震资料品质的关键。分析旧地震资料,确定了山地激发技术的优化方向,进行了全面的激发参数试验,分别优选出可控震源和炸药震源激发因素,在开阔处采用可控震源激发,空炮段较大时用炸药震源补充。施工时首先详细踏勘,进行精细单线设计,采用弯线施工和变观等方法,多设可控震源激发点。采用优化的激发技术,地震资料品质得到明显提高。
Geological conditions of the mountainous area in Block 71 of Yemen are very complex.The surface of the mountain is covered with thin weathering layer in some places,and the excitation condition is bad.Therefore,the key point of improving the seismic data quality is to optimize the data quality of the mountainous area.The direction and method of optimizing the vitalizing technology was determined through analyzing the former seismic data,and the parameters for dynamite and Vibroseis were decided respectively through comprehensive parameter test.Vibroseis was adopted in the open and wide area and dynamite source was used as supplement where the vacant source points were excessive.Single-line design was performed after scouting the line by means of performing crooked line and changing geometry so as to design as many source points for vibroseis as possible during the real operation.With the new exciting technique,the data quality has been improved greatly.
Geological conditions of the mountainous area in Block 71 of Yemen are very complex.The surface of the mountain is covered with thin weathering layer in some places,and the excitation condition is bad.Therefore,the key point of improving the seismic data quality is to optimize the data quality of the mountainous area.The direction and method of optimizing the vitalizing technology was determined through analyzing the former seismic data,and the parameters for dynamite and Vibroseis were decided respectively through comprehensive parameter test.Vibroseis was adopted in the open and wide area and dynamite source was used as supplement where the vacant source points were excessive.Single-line design was performed after scouting the line by means of performing crooked line and changing geometry so as to design as many source points for vibroseis as possible during the real operation.With the new exciting technique,the data quality has been improved greatly.
引文
[1]裴全理.也门71区地震资料采集方法[J].勘探地球物理进展,2008,31(4):285-289.
[2]裴全理.也门71区地震资料采集方法[J].物探与化探,2009,33(2):181-185.
[3]邓志文,倪宇东,陈学强.复杂山地三维地震勘探采集技术[J].石油物探,2002,41(1):15-22.
[4]杨贵祥.碳酸盐岩裸露区地震采集方法[J].地球物理学进展,2005,20(4):1108-1128.
[5]黄锐.川东北碳酸盐岩地区地震勘探技术难点与对策[J].石油物探,2008,47(5):476-482.
[6]汪学武.南方黔中碳酸盐岩裸露区地震采集方法探讨[J].石油物探,2007,46(5):514-520.
[7]罗仁泽,罗果,梁黎明,等.喀什—阿图什地区山地地震采集方法分析[J].勘探地球物理进展,2009,32(3):202-206.
[8]杨贵祥.碳酸盐岩裸露区地震勘探采集方法[J].勘探地球物理进展,2005,20(4):1108-1128
[9]邓述全,洪月英,周如义.可控震源高效交替扫描技术的应用效果分析[J].勘探地球物理进展,2006,29(1):34-37.
[10]曹务祥.疏松地表对震源信号的影响与施工方法的改进[J].石油物探,2007,46(2):170-173.
[11]张树海.细分面元在高密度三维地震勘探中的应用[J].勘探地球物理进展,2009,32(6):399-403.
[2]裴全理.也门71区地震资料采集方法[J].物探与化探,2009,33(2):181-185.
[3]邓志文,倪宇东,陈学强.复杂山地三维地震勘探采集技术[J].石油物探,2002,41(1):15-22.
[4]杨贵祥.碳酸盐岩裸露区地震采集方法[J].地球物理学进展,2005,20(4):1108-1128.
[5]黄锐.川东北碳酸盐岩地区地震勘探技术难点与对策[J].石油物探,2008,47(5):476-482.
[6]汪学武.南方黔中碳酸盐岩裸露区地震采集方法探讨[J].石油物探,2007,46(5):514-520.
[7]罗仁泽,罗果,梁黎明,等.喀什—阿图什地区山地地震采集方法分析[J].勘探地球物理进展,2009,32(3):202-206.
[8]杨贵祥.碳酸盐岩裸露区地震勘探采集方法[J].勘探地球物理进展,2005,20(4):1108-1128
[9]邓述全,洪月英,周如义.可控震源高效交替扫描技术的应用效果分析[J].勘探地球物理进展,2006,29(1):34-37.
[10]曹务祥.疏松地表对震源信号的影响与施工方法的改进[J].石油物探,2007,46(2):170-173.
[11]张树海.细分面元在高密度三维地震勘探中的应用[J].勘探地球物理进展,2009,32(6):399-403.
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