【作者】 于同翡；

【导师】 王彦春； 刘兵；

【作者基本信息】 中国地质大学（北京） ， 地质工程， 2009， 硕士

【摘要】 辽河探区经过近四十年的勘探历程,当前已经全面进入精细地震勘探阶段,勘探对象和目标向细小地质体、复杂岩性、隐蔽性油气藏和深层地层方向转移,对地震资料的品质要求更高。在地震采集过程中必须满足采集资料的高信噪比、高分辨率和高保真度要求。由于辽河外围盆地地震资料品质普遍较差,三维资料信噪比也较低,而激发效果的好坏直接影响着采集资料的信噪比等各项指标.本文通过对辽河外围盆地交力格、龙湾筒及奈曼地区以往资料的整理及研究,系统的归纳了辽河外围探区的激发条件,分析激发试验中地震记录的品质,总结出了采集施工中最佳激发因素的确定方法和原则:1激发井深:激发井深的确定应充分考虑激发频率和多次折射的综合影响,在高速层顶界面以下3-7m选择较好的激发岩性中激发,提高单炮资料信噪比;2激发药量:单井药量2-6kg(具体激发因素经现场试验确定);3组合井数:单井药量较小,激发的子波主频高,保证了分辨率的提高。作为野外生产施工中的重要环节,激发效果的好坏直接影响着采集资料的信噪比等各项指标。对于外围低信噪比地区,各自的激发因素存在相应特点。此外,针对近年来外围沙丘区施工情况,指出了沙丘区区激发能量保障的有效方法和实施步骤,对今后沙丘区采集施工有进一步的指导意义。更多还原

【Abstract】 Exploration course of passing nearly 40 years of visiting area of Liao he, We have already entered meticulous seismic exploration at present, Exploration targets and goal to hide and shift with the deep layer direction to tiny geological body, complex rock, reservoir, so have high quality of the seismic date is important, Wu must meet high SNR, high resolution and hi fi (high fidelity) requirement of gathering materials while the seismic acquisition. Generally , The seismic date is relatively bad in the Liao he peripheral basin, The SNR of the three-dimensional seismic date is lower too, And it influences SNR every index of date collection directly to the quality of the shooting, to studying the old date, for example, Jiao li ge, Lu jia pu, Nai man, Systematic conclude of shooting condition in the Liao he peripheral basin area: 1 well depth, well depth on the comprehensive influence that should fully consider shooting frequency and refracting many times , chooses better shooting when stimulate the rock under one high speed layer (3-7)M, improve the materials SNR of single shot; 2. dynamite weight. Single well dynamite (2-6) kg (stimulate the factor specifically confirmed by the test). 3. combination well. Small dynamite in single well, the wavelet is mainly high frequently, guarantee the improvement of the resolution Analyze that shooting the quality of the recorder in the test, Summarize best definite method and principle which shooting parameter, shooting is very important. in low SNR area, there are corresponding characteristics to shooting factor. on the side, to the situation in the peripheral sand dune area in recent years, pointed out the sand dune shooting effective method and implementation step that ensures enough energy, have further directive significance to seismic record in the sand dune area in the future .更多还原