CAJ | 학술논문

板桥古潜山位于板桥油气田板南断块深层。奥陶系古潜山因经受了长期的风化、剥蚀、淋滤等地质作用，储集性能变好。古潜山上部中生界红色泥岩和Es3段暗色泥岩是天然的盖层。有机地球化学分析结果表明，古潜山两侧的板桥、歧口两凹陷具有良好的生烃潜力，其主力生油层段是Es3段。古潜山通过不整合面和断层与周围的Es3段地层接触，它们成为油气发生大规模侧向运移的有利通道。进一步研究发现4条断层将研究区内奥陶系基岩切割成3个（Ⅰ，Ⅱ，Ⅲ）断块，分属3个古潜山圈闭，它们形成时间早于主力生油层的成烃期，而且又与油源区距离较近，因而形成了有效的古潜山圈闭。
판교고잠산위우판교유기전판남단괴심층。오도계고잠산인경수료장기적풍화、박식、림려등지질작용，저집성능변호。고잠산상부중생계홍색니암화Es3단암색니암시천연적개층。유궤지구화학분석결과표명，고잠산량측적판교、기구량요함구유량호적생경잠력，기주력생유층단시Es3단。고잠산통과불정합면화단층여주위적Es3단지층접촉，타문성위유기발생대규모측향운이적유리통도。진일보연구발현4조단층장연구구내오도계기암절할성3개（Ⅰ，Ⅱ，Ⅲ）단괴，분속3개고잠산권폐，타문형성시간조우주력생유층적성경기，이차우여유원구거리교근，인이형성료유효적고잠산권폐。
Banqiao buried hill is located in the deep zone of Bannan fault block in Banqiao oil field.The characteristics of the reservoir become good because of geologic functions of weathering， denudation and leaching that Ordovician buried hill experienced.The Mesozoic red mudstone in the upper part of buried hill and dark mudstone in Es3 are the natural capracks.The result from organic geochemical analysis shows that depressions of Banqiao and Qikou on both sides of the buried hill have good potential of hydrocarbon generation,of which the main oil source bed is Es3.The buried hill is connected with the formation around Es2 through unconformable surface and fault blocks,thus they become beneficial channels for lateral migration of oil and gas on a large scale.A further study indicates that Ordovician baserock in the studied area is divided into 3 blocks(Ⅰ,Ⅱ,Ⅲ) by 4 faults.The blocks belong to 3 buried hill traps, of which the forming time is earlier than that of the hydrcarbon generation in the main oil source bed.They are near the oil source regions,thus effective traps are formed in the buried hill.