碳酸盐岩地区地震勘探采集方法研究
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摘要
广西十万大山地区,地表地质特征不一,多为灰岩出露区或火成岩风化剥蚀区,岩石的硬度、密度及脆性都较大,其速度也较高,该区水源缺乏,激发和接收的介质耦合条件很差,造成了数据采集时激发和接收都很困难。针对上述情况,在该地区应用新型震源(爆炸地震锤)、变观观测系统和多种压噪方法进行资料采集工作,取得了较好的效果。
The surface geology in Shiwan mountainous region varies due to the different surface conditions. The geology is characterized by limestone outcrops and weathering igneous rocks. The rocks are high in hardness, density, fragility, as well as velocity. The lack of water source and poor coupling aggravate the difficulties in shooting and receiving during seismic data acquisition. Desired results were yielded by adoption of new energy source, flexible geometry, and a combination of noise attenuation methods in data acquisition.
The surface geology in Shiwan mountainous region varies due to the different surface conditions. The geology is characterized by limestone outcrops and weathering igneous rocks. The rocks are high in hardness, density, fragility, as well as velocity. The lack of water source and poor coupling aggravate the difficulties in shooting and receiving during seismic data acquisition. Desired results were yielded by adoption of new energy source, flexible geometry, and a combination of noise attenuation methods in data acquisition.
引文
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2 杨德宽,郑泽继,胡立新,等.对深层地震勘探中随机噪音的一点认识[J].石油物探,2000,39(3):50～61
3 吕公河.地震勘探中次生干扰弹性动力学分析[J].石油物探,2001,40(3):76～81
4 李庆忠.走向精确勘探的道路[M].北京:石油工业出版社,1994.107～109
5 李忠平.渝鄂湘山地地震勘探资料采集中的几个关键问题[J].石油物探,2000,39(4):39～48
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