玄武巖發(fā)育區(qū)砂巖儲層特征及控制因素:渤海南部BZ34-9區(qū)與KL6區(qū)塊對比
發(fā)布時間：2018-10-17 20:16
【摘要】：渤海南部BZ34-9區(qū)與KL6區(qū)塊位于萊北低凸起南北兩側,均發(fā)育新生代玄武巖并得到鉆井證實,但儲層特征差異明顯.以三維地震、薄片、SEM以及X衍射等技術手段對兩個區(qū)塊玄武巖時空展布,沉積體系以及儲層特征進行對比.研究表明,BZ34-9區(qū)構造位于緩坡帶,供源速率中等.漸新世玄武巖為沉積期及準同生期噴發(fā)且位于砂體主體部位,優(yōu)質層段形成白云石包殼、沸石膠結溶蝕、混層粘土包膜等成巖響應,整體對儲層發(fā)育發(fā)揮積極作用;KL6區(qū)構造近物源,供源強烈,漸新世玄武巖發(fā)育在凹陷內部,對砂體影響有限,儲層以高嶺石及碳酸鹽膠結充填為特征,在成巖期受郯廬斷裂帶巖漿熱液影響,絹云母、菱鐵礦重結晶等現(xiàn)象普遍.對比分析表明玄武巖對儲層的影響受控于火山噴發(fā)時機、物源供給速率、砂體及火山巖配置關系等因素.
[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.
【作者單位】： 中國地質大學構造與油氣資源教育部重點實驗室;中國地質大學資源學院;中海石油有限公司天津分公司;
【基金】：國家重大油氣專項課題(No.2011ZX05023-001-015);國家重大油氣專項課題(No.2011ZX05023-001-001)
【分類號】：P618.13
，
本文編號：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.
【作者單位】： 中國地質大學構造與油氣資源教育部重點實驗室;中國地質大學資源學院;中海石油有限公司天津分公司;
【基金】：國家重大油氣專項課題(No.2011ZX05023-001-015);國家重大油氣專項課題(No.2011ZX05023-001-001)
【分類號】：P618.13
，
本文編號：2277835
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