玄武岩发育区砂岩储层特征及控制因素:渤海南部BZ34-9区与KL6区块对比
发布时间：2018-10-17 20:16
【摘要】：渤海南部BZ34-9区与KL6区块位于莱北低凸起南北两侧,均发育新生代玄武岩并得到钻井证实,但储层特征差异明显.以三维地震、薄片、SEM以及X衍射等技术手段对两个区块玄武岩时空展布,沉积体系以及储层特征进行对比.研究表明,BZ34-9区构造位于缓坡带,供源速率中等.渐新世玄武岩为沉积期及准同生期喷发且位于砂体主体部位,优质层段形成白云石包壳、沸石胶结溶蚀、混层粘土包膜等成岩响应,整体对储层发育发挥积极作用;KL6区构造近物源,供源强烈,渐新世玄武岩发育在凹陷内部,对砂体影响有限,储层以高岭石及碳酸盐胶结充填为特征,在成岩期受郯庐断裂带岩浆热液影响,绢云母、菱铁矿重结晶等现象普遍.对比分析表明玄武岩对储层的影响受控于火山喷发时机、物源供给速率、砂体及火山岩配置关系等因素.
[Abstract]:The BZ34-9 area and the KL6 block in the southern Bohai Sea are located on the north and south sides of the Laibei low uplift, both of which developed Cenozoic basalt and proved by drilling, but the reservoir characteristics are obviously different. The spatial and temporal distribution, sedimentary system and reservoir characteristics of basalt in the two blocks were compared by means of 3-D seismic, thin slice, SEM and X-ray diffraction. The results show that the BZ34-9 structure is located in the gentle slope zone and the source rate is moderate. Oligocene basalt erupts during sedimentary and quasi-syntectic periods and is located in the main part of sand body. Dolomite cladding, zeolite cementation dissolution, mixed clay coating and so on are formed in high quality strata. The whole plays a positive role in reservoir development, the KL6 area is characterized by kaolinite and carbonate cementation filling, and the source of the structure is near and strong, the Oligocene basalt is developed in the sag and has limited influence on the sand body, and the reservoir is characterized by kaolinite and carbonate cementation filling. During the diagenetic period, the magmatic hydrothermal effect of the Tan-Lu fault zone, sericite and siderite recrystallization are common. The comparative analysis shows that the influence of basalt on reservoir is controlled by the time of volcanic eruption, the supply rate of provenance, the relationship between sand body and volcanic rock configuration, and so on.
【作者单位】： 中国地质大学构造与油气资源教育部重点实验室;中国地质大学资源学院;中海石油有限公司天津分公司;
【基金】：国家重大油气专项课题(No.2011ZX05023-001-015);国家重大油气专项课题(No.2011ZX05023-001-001)
【分类号】：P618.13
，
本文编号：2277835
[Abstract]:The BZ34-9 area and the KL6 block in the southern Bohai Sea are located on the north and south sides of the Laibei low uplift, both of which developed Cenozoic basalt and proved by drilling, but the reservoir characteristics are obviously different. The spatial and temporal distribution, sedimentary system and reservoir characteristics of basalt in the two blocks were compared by means of 3-D seismic, thin slice, SEM and X-ray diffraction. The results show that the BZ34-9 structure is located in the gentle slope zone and the source rate is moderate. Oligocene basalt erupts during sedimentary and quasi-syntectic periods and is located in the main part of sand body. Dolomite cladding, zeolite cementation dissolution, mixed clay coating and so on are formed in high quality strata. The whole plays a positive role in reservoir development, the KL6 area is characterized by kaolinite and carbonate cementation filling, and the source of the structure is near and strong, the Oligocene basalt is developed in the sag and has limited influence on the sand body, and the reservoir is characterized by kaolinite and carbonate cementation filling. During the diagenetic period, the magmatic hydrothermal effect of the Tan-Lu fault zone, sericite and siderite recrystallization are common. The comparative analysis shows that the influence of basalt on reservoir is controlled by the time of volcanic eruption, the supply rate of provenance, the relationship between sand body and volcanic rock configuration, and so on.
【作者单位】： 中国地质大学构造与油气资源教育部重点实验室;中国地质大学资源学院;中海石油有限公司天津分公司;
【基金】：国家重大油气专项课题(No.2011ZX05023-001-015);国家重大油气专项课题(No.2011ZX05023-001-001)
【分类号】：P618.13
，
本文编号：2277835
本文链接：https://www.wllwen.com/kejilunwen/shiyounenyuanlunwen/2277835.html
