莱州湾凹陷垦利11区盐构造特征及成藏分析
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摘要
莱州湾凹陷垦利11区首次在渤海海域揭示了盐湖沉积体系及盐相关构造。利用最新钻井资料,分析区域构造应力背景,结合地震反射特征,认为垦利11区盐构造处于盐枕发育阶段;盐层厚度北部大于南部。盐构造活动形成了垦利11区近源、短距离运移的成藏特征,围绕盐体的含盐热流体对油质的改善有重要影响。垦利11区发现的油气集中在盐上层,分析表明垦利11区盐下层有良好的生储盖组合、保存条件,是重要的目的层系。
Kenli 11 district in the Laizhou Bay first revealed salt deposition system and related structures in the Bohai Sea.Based on the latest drilling data,the regional tectonic stress analysis,and seismic reflection characteristics,the study shows that salt structures in Kenli 11 district is a salt pillow,in which the thickness of salt in the north part is larger than that of the south.The reservoir characteristics are near-source and short distance migration,which related to salt tectonic activity.The salt geothermal fluid around the salt is important for improving the quality of the oil.The upper salt formation is an important target of exploration.
Kenli 11 district in the Laizhou Bay first revealed salt deposition system and related structures in the Bohai Sea.Based on the latest drilling data,the regional tectonic stress analysis,and seismic reflection characteristics,the study shows that salt structures in Kenli 11 district is a salt pillow,in which the thickness of salt in the north part is larger than that of the south.The reservoir characteristics are near-source and short distance migration,which related to salt tectonic activity.The salt geothermal fluid around the salt is important for improving the quality of the oil.The upper salt formation is an important target of exploration.
引文
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[3]葛建党.郯庐断裂在渤中凹陷的构造特征与油气成藏的关系[J].海洋石油,2001(1):14-20.
[4]蔡东升,罗毓晖,姚长华.渤海莱州湾走滑拉分凹陷的构造研究及其石油勘探意义[J].石油学报,2001,22(2):19-25.
[5]王德仁,焦大庆.东濮凹陷与盐有关的岩性油气藏特征[J].复式油气田,1997(4):36-40.
[6]刘晓峰,解习农.与盐构造相关的流体流动和油气运聚[J].地学前缘,2001,8(4):343-349.
[7]姜培海,唐文辉.渤海海域稠油油田(藏)特征及勘探意义[J].特种油气藏,1998,5(2):18-22.
[8]金文正,汤良杰,万桂梅.浅谈盐及其相关构造与油气的关系[J].西北油气勘探,2005,17(3):29.
[9]王红军,胡见义.库车坳陷白垩系含油气系统与高压气藏的形成[J].天然气工业,2002,22(1):5-8.
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