【摘要】 通过近年来准噶尔盆地东部五彩湾凹陷石炭系火山岩的勘探实践,探索了一套适用于准噶尔盆地石炭系火山岩(相)识别技术系列。该技术系列主要包括:利用重磁电等非地震勘探技术进行火山岩的基本特征及平面分布的确认,在此基础上综合分析火山岩测井响应特征、井震结合建立火山岩相对应的地震相模式,依托三维连片目标处理数据体展开火山岩相划分和地震属性优化等地震解释技术的综合应用,最终确定有利火山岩相分布区并上钻探井。五彩湾凹陷石炭系火山岩勘探成效显著,证实了该套火山岩(相)识别技术系列的可行性,尤其在火山岩(相)识别和勘探目标优选方面该套技术系列的实施为后期准噶尔盆地亿吨级克拉美丽石炭系气田的发现起到了重要作用,具有推广应用价值。更多还原

【Abstract】 The exploration practice in recent years in the Wucaiwan sag of the Junggar basin has explored a series of exploration techniques for identification of the Carboniferous volcanic rock(facies),including identification of basic characteristics and plane distribution of volcanic rocks using non-seismic exploration technology such as gravitational-magnetic-electrical techniques.Log response characteristics of volcanic rock are analyzed,drilling-logging-seismic information is combined to build up a model of seismic facies corresponding to volcanic facies.Based on 3D multiple-block-merged processing data,the seismic interpretation techniques have been comprehensively used to classify volcanic facies and optimize seismic attributes.Favorable volcanic facies are finally determined and exploration wells are arranged.Remarkable exploration result has been achieved in the Carboniferous volcanic rocks of the Wucaiwan sag,thus proved the feasibility of this technology for identification of Carboniferous volcanic rocks(facies).The implementation of this technology has played a crucial role in discovery of the Kelameili gas field in the Junggar Basin with proved gas reserves of 1 000×108m3 in Carboniferous volcanic rocks.更多还原