条山凸起前缘区域结构特征及勘探潜力分析
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摘要
条山凸起前缘包括三塘湖盆地岔哈泉凸起及马朗凹陷2个重要的构造单元。勘探至今,在条山凸起前缘地区已发现了多个油田及含油气构造,且勘探程度很高,凹陷部位基本已经被三维所覆盖。以寻找大勘探场面为思路,整体兼顾,通过精细的地层对比以及地震、非地震联合解释等手段,明确区域断裂及结构特征,并且结合对该地区石油地质条件的研究成果,重新研究油气成藏机理和分布规律。认为条山凸起前缘地区中部凹陷带及北部冲断带上构造层应该作为目前三塘湖盆地马朗凹陷增储上产的首选区带,南缘逆冲推覆褶皱带则可以通过采集处理的进一步攻关,寻找到二叠系裂缝型大型油气藏,为三塘湖盆地马朗凹陷整体储量规模增长奠定基础。
The front of Tiaoshan salient consists of two important structural units,the Chahaquan salient and the Malang sag in Santanghu basin.Many oilfields and hydrocarbon-bearing structures have been discovered in the Tiaoshan salient front.The exploration for hydrocarbons has been intensively carried out and 3D surveys have almost covered all the sag.This paper focuses on searching for big prospective areas,indentifying regional faults and structural features through fine stratigraphic correlation,seismic and non-seismic interpretation.The mechanism and distribution of hydrocarbon accumulation are re-studied based on previous accomplishments on the petroleum geology for this area.It is concluded that the middle sag and the north thrust belt in the Tiaoshan salient front shall be the first choice of increasing reserves and stabilizing oil production for the Malang sag in the Santanghu basin.The thrust nappe fold belt in the south is likely to find big Permian fractured reservoirs with the help of further seismic acquisition and processing.
The front of Tiaoshan salient consists of two important structural units,the Chahaquan salient and the Malang sag in Santanghu basin.Many oilfields and hydrocarbon-bearing structures have been discovered in the Tiaoshan salient front.The exploration for hydrocarbons has been intensively carried out and 3D surveys have almost covered all the sag.This paper focuses on searching for big prospective areas,indentifying regional faults and structural features through fine stratigraphic correlation,seismic and non-seismic interpretation.The mechanism and distribution of hydrocarbon accumulation are re-studied based on previous accomplishments on the petroleum geology for this area.It is concluded that the middle sag and the north thrust belt in the Tiaoshan salient front shall be the first choice of increasing reserves and stabilizing oil production for the Malang sag in the Santanghu basin.The thrust nappe fold belt in the south is likely to find big Permian fractured reservoirs with the help of further seismic acquisition and processing.
引文
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[2]肖序常,汤耀庆,等.新疆北部及邻区大地构造[M].北京:地质出版社,1992:1-40.
[3]王元龙,成守德.新疆大地构造四个阶段的演化及其基本特征[G]/陈/海泓,侯泉林,肖文交主编.中国碰撞造山带研究.北京:海洋出版社,1999:122-132.
[4]张恺.新疆三塘湖盆地板块构造演化特征及其含油气远景评价[J].新疆石油地质,1993,14(1):3-4.
[5]刘学锋,刘绍平,刘成鑫,等.三塘湖盆地构造演化与原型盆地类型[J].西南石油学院学报,2002,24(4):13-16.
[6]李溪滨.三塘湖盆地石油地质特征及勘探建议[J].新疆石油地质,1994,15(2):111-115.
[7]孙自明,熊保贤,李永林,等.三塘湖盆地构造特征与有利勘探方向[J].石油实验地质,2001,23(1):23-26.
[8]伍新和,王成善,伊海生,等.新疆三塘湖盆地烃源岩特征[J].成都理工大学学报:自然科学版,2004,31(5):511-515.
[9]邢秀娟,刘洪福,柳益群,等.三塘湖盆地中、上三叠统划分及分布[J].西北大学学报:自然科学版,2007,37(3):460-464.
[10]赵泽辉,郭召杰,张臣,等.新疆东部三塘湖盆地构造演化及其石油地质意义[J].北京大学学报:自然科学版,2003,39(2):219-226.
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