摘要
近年来,渤海油田在天然气和边缘凹陷新区勘探取得了重要进展。创新提出了天然气"被子"成藏模式,认为巨厚的超压泥岩形成的"被子"控制了天然气的保存条件,指导环渤中西南环天然气勘探取得了重大突破。重新认识边缘凹陷生排烃能力,完善"咸化湖盆"烃源岩发育模式,创新提出了"湖盆咸化-地壳减薄-走滑改造"三因素联控的"浅盆成烃"新认识,大大推动了渤海边缘凹陷勘探新进展。这些新认识的提出和完善推动渤海油田新区、新领域勘探取得重大突破,保障了该地区储量稳步增长,也为其他类似地区油气勘探提供了指导意义。
In recent years,great progresses have been obtained in the natural gas exploration and exploration of new areas of surrounding sags in the Bohai oilfield.A ＂quilt-like＂accumulation model for natural gas was put forward innovatively,the extensive large set of overpressure mudstones as a quilt which dominates the conservation of natural gas,such a model pointing the way forward for the natural gas exploration in southwestern Bozhong sag.Through renewal of understandings on the hydrocarbon generation and expulsion capability of surrounding sags and improvement of the pattern of source rocks development in＂saline lacustrine basins＂,new recognition for＂hydrocarbon generation in shallow basins＂has been put forward innovatively,which indicates that three factors including lacustrine basin salinization,earthy crust thinning,and strike-slip transformation jointly control hydrocarbon generation,greatly pushing forward with the exploration of surrounding sags of Bohai oilfield.As a whole,these new understandings promote major breakthroughs in the exploration of new areas and resource in the Bohai oilfield,guarantee stable reserve discovery,and provide guidance for hydrocarbon exploration of other similar areas.
作者
薛永安
XUE Yong＇ an(CNOOC China Limited, Tianjin Branch, Tianjin 300459, Chin)
出处
《中国海上油气》
CAS
CSCD
北大核心
2018年第2期1-8,共8页
China Offshore Oil and Gas
基金
"十三五"国家科技重大专项"大型油气田及煤层气开发(编号:2016ZX05024)"部分研究成果
关键词
被子模式
浅盆成烃
认识创新
勘探突破
渤海海域
＂quilt like＂ model
hydrocarbon generation in shallow basins
understanding innovation
explo ration breakthrough
Bohai sea area
