武威盆地北部坳陷致密气勘探前景
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摘要
武威盆地石炭-二叠系与鄂尔多斯盆地沉积环境相似,然而总体勘探程度很低,尤其是北部坳陷,仅开展少量电法和地震勘查,未开展钻探工作,烃源岩发育情况和含油气资源潜力不清。2015年中国地质调查局油气资源调查中心在武威盆地北部坳陷部署实施了武地1井,取全取准了石炭系的烃源岩和储层参数,并获得良好油气显示。本文通过充分利用武地1井等钻井资料结合武威盆地野外地质调查,以测试分析结果为基础,对北部坳陷的烃源岩、储层条件等进行了分析,探讨了致密气勘探潜力,这一认识为下一步北部坳陷的油气勘探部署提供重要的依据。
The Carboniferous sedimentary environment of Wuwei basin is similar as Ordos Permian basin.But the level of exploration is overall low,especially in the northern depression,with only a small amount of electrical and seismic exploration,no drilling work.The hydrocarbon source rocks distribution and resource potential is not clear.In 2015,the Oil and Gas Resources Survey of China Geological Survey deployed Well Wudi-1 in the northern depression of the Wuwei basin.The hydrocarbon source rocks and reservoir parameters of the Carboniferous system have been obtained,and good oil and gas shows have been obtained.In this paper,by making full use of drilling data of Well Wudi-1,combined with field geological survey in Wuwei basin,the conditions of hydrocarbon source rocks and reservoir were analyzed.And the exploration potential of tight gas was discussed.The new knowledge gained provides an important basis for the next-step petroleum deployment in the north depression of Wuwei basin.
The Carboniferous sedimentary environment of Wuwei basin is similar as Ordos Permian basin.But the level of exploration is overall low,especially in the northern depression,with only a small amount of electrical and seismic exploration,no drilling work.The hydrocarbon source rocks distribution and resource potential is not clear.In 2015,the Oil and Gas Resources Survey of China Geological Survey deployed Well Wudi-1 in the northern depression of the Wuwei basin.The hydrocarbon source rocks and reservoir parameters of the Carboniferous system have been obtained,and good oil and gas shows have been obtained.In this paper,by making full use of drilling data of Well Wudi-1,combined with field geological survey in Wuwei basin,the conditions of hydrocarbon source rocks and reservoir were analyzed.And the exploration potential of tight gas was discussed.The new knowledge gained provides an important basis for the next-step petroleum deployment in the north depression of Wuwei basin.
引文
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[14]魏建设,卢进才,魏仙样,等.河西走廊地区石炭系烃源岩的特征[J].地质通报,2010,29(2):367-373.
[15]魏仙样,卢进才,魏建设,等.河西走廊地区石炭系-二叠系油气地质条件与含油气前景[J].地质通报,2011,30(6):865-878.
[16]万旸璐,李仲东,彭超,等.鄂尔多斯盆地大牛地气田山二段致密砂岩储层特征及评价[J].矿物岩石,2016,36(3):106-114.
[2]关德师,牛嘉玉.中国非常规油气地质[M].北京:石油工业出版社,1995:60-85.
[3]LAW B E,CURTIS J B.Introduction to unconventional petroleum systems[J].AAPG Bulletin,2002,86(11):1851-1852.
[4]LAW B E.Basin-centered gas systems[J].AAPG Bulletin,2002,86(11):1891-1919.
[5]邹才能,朱如凯,吴松涛,等.常规与非常规油气聚集类型、特征、机理及展望——以中国致密油和致密气为例[J].石油学报,2012,33(2):173-188.
[6]杨华,刘新社,杨勇.鄂尔多斯盆地致密气勘探开发形势与未来发展展望[J].中国工程科学,2012,14(6):40-48.
[7]王少飞,安文宏,陈鹏,等.苏里格气田致密气成藏特征与开发技术[J].天然气地球科学,2013,24(1):138-145.
[8]西安地质学院.甘肃河西走廊东部地区石炭纪和二叠纪地层以及沉积相和生储盖条件的研究[M].西安:西北大学出版社,1989.
[9]郭英海,刘焕杰,权彪,等.鄂尔多斯地区晚古生代沉积体系及古地理演化[J].沉积学报,1998,16(3):44-51.
[10]李儒峰,柳广弟,马国富,等.武威盆地石炭系层序地层学研究[J].现代地质,2010,24(6):1048-1056.
[11]曹代勇,刘善印,张守仁,等.河西走廊-巴彦浩特盆地石炭系含油气远景评价[J].西北地质,2003,36(1):62-69.
[12]康玉柱.中国西北地区石炭-二叠系油气勘探前景[J].新疆石油地质,2008,28(4):415-419.
[13]杜治利,田亚,陈夷.甘肃武威盆地儿马湖凹陷探获油气[J].中国地质,2017,44(1):208-209.
[14]魏建设,卢进才,魏仙样,等.河西走廊地区石炭系烃源岩的特征[J].地质通报,2010,29(2):367-373.
[15]魏仙样,卢进才,魏建设,等.河西走廊地区石炭系-二叠系油气地质条件与含油气前景[J].地质通报,2011,30(6):865-878.
[16]万旸璐,李仲东,彭超,等.鄂尔多斯盆地大牛地气田山二段致密砂岩储层特征及评价[J].矿物岩石,2016,36(3):106-114.