莺歌海盆地东方区黄流组储层成因新认识
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摘要
以往对莺歌海盆地物源体系的研究主要建立在红河和海南岛物源分析的基础上,由于盆地西部资料较少,限制了研究人员的视野。近几年来,中越双方在海上边界两侧开展了一些合作油气勘探活动,双方在平等互利的基础上加强合作交流,互换了部分基础地质资料及钻井地质资料;同时,实施了更大范围的三维地震,并且资料品质有较大改善。在此基础上,对莺歌海盆地东方区黄流组储层沉积控制因素、分布特征,以及岩性特征与成因进行了分析,认为盆地西部较大规模的水系以及莺西断裂坡折带对东方区黄流组一段储层发育起到了主控作用,东方区西部存在大型储集体沉积的构造地理环境,主力储层为高密度浊流成因。
Previous studies on the provenance systems in Yinggehai basin were mainly based on the analyses of provenances in Honghe and Hainan island,and insufficient data in the western basin has restricted the researchers.In recent years,certain cooperation activities of hydrocarbon exploration were conducted on two sides along the sea borderline by China and Vietnam,and the cooperation and exchange between two parties are enhanced on an equal and mutually beneficial basis,with some basic geological data and drilling data exchanged each other.Meanwhile,3D seismic has been more widely acquired in Dongfang area,and the data is significantly improved in quality.Bsaed on all these,sedimentary controls,distribution and lithologic features of reservoirs in Huangliu Formation are analyzed in Dongfang area,resulting in some new knowledge as follows:(1)The development of reservoirs in Number 1,Huangliu Formation,was dominantly controlled by the large rivers and Yingxi faulted slope-break zone in the western basin;(2)There was a palaeotectonic-palaeogeogrphic environment favorable to deposition of large reservoir bodies in Dongfang area;(3)The major reservoirs may form by high-density turbidity currents.
Previous studies on the provenance systems in Yinggehai basin were mainly based on the analyses of provenances in Honghe and Hainan island,and insufficient data in the western basin has restricted the researchers.In recent years,certain cooperation activities of hydrocarbon exploration were conducted on two sides along the sea borderline by China and Vietnam,and the cooperation and exchange between two parties are enhanced on an equal and mutually beneficial basis,with some basic geological data and drilling data exchanged each other.Meanwhile,3D seismic has been more widely acquired in Dongfang area,and the data is significantly improved in quality.Bsaed on all these,sedimentary controls,distribution and lithologic features of reservoirs in Huangliu Formation are analyzed in Dongfang area,resulting in some new knowledge as follows:(1)The development of reservoirs in Number 1,Huangliu Formation,was dominantly controlled by the large rivers and Yingxi faulted slope-break zone in the western basin;(2)There was a palaeotectonic-palaeogeogrphic environment favorable to deposition of large reservoir bodies in Dongfang area;(3)The major reservoirs may form by high-density turbidity currents.
引文
[1]钟志洪,王良书,夏斌,等.莺歌海盆地成因及其大构造意义[J].地质学报,2004,78(3):302-309.
[2]向宏发,万景林,韩竹军,等.红河断裂带大型右旋走滑运动发生时代的地质分析与FT测年[J].中国科学:D辑,2006,36(11):977-987.
[3]王国芝,王成善,曾允孚,等.滇西高原的隆升与莺歌海盆地的沉积响应[J].沉积学报,2000,18(2):234-240.
[4]谢玉洪.构造活动型盆地层序地层分析及天然气成藏模式:以莺歌海盆地为例[M].北京:地质出版社,2009:46-47,91-106.
[5]SCHOLLE P A.Sandstone depositional environments[M].AAPGMemoir31,1998:365-404.
[2]向宏发,万景林,韩竹军,等.红河断裂带大型右旋走滑运动发生时代的地质分析与FT测年[J].中国科学:D辑,2006,36(11):977-987.
[3]王国芝,王成善,曾允孚,等.滇西高原的隆升与莺歌海盆地的沉积响应[J].沉积学报,2000,18(2):234-240.
[4]谢玉洪.构造活动型盆地层序地层分析及天然气成藏模式:以莺歌海盆地为例[M].北京:地质出版社,2009:46-47,91-106.
[5]SCHOLLE P A.Sandstone depositional environments[M].AAPGMemoir31,1998:365-404.
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