發(fā)布時(shí)間：2018-03-14 16:01

  本文選題：鹽下　切入點(diǎn)：構(gòu)造特征　出處：《斷塊油氣田》2017年01期 　論文類型：期刊論文

【摘要】：為理清寬扎盆地鹽下構(gòu)造格局,進(jìn)一步指導(dǎo)該盆地鹽下勘探,文中通過對(duì)不同構(gòu)造部位地震剖面的解釋,總結(jié)了寬扎盆地的鹽下構(gòu)造特征,認(rèn)為寬扎盆地裂陷期存在一中央隆起帶,該隆起帶將寬扎盆地分隔為內(nèi)寬扎次盆和外寬扎次盆,大西洋樞紐斷裂是中央隆起帶和外寬扎次盆的分界線。在外寬扎次盆,發(fā)育多個(gè)受斷裂控制的次級(jí)凸起,已有鉆井證實(shí)這些凸起為有利的油氣聚集區(qū)。寬扎盆地的成藏研究結(jié)果表明:寬扎盆地鹽下成藏條件優(yōu)越,烴源巖發(fā)育在深湖￣半深湖相凹陷內(nèi),主要為巴列姆階湖相泥頁(yè)巖;儲(chǔ)層為Cuvo組碳酸鹽巖和砂巖,主要發(fā)育在次級(jí)凸起和斜坡帶上;蓋層為阿普特階鹽巖。綜合分析認(rèn)為,緊鄰大西洋樞紐斷裂西側(cè)的凸起帶為寬扎盆地鹽下最有利的勘探區(qū)帶。
[Abstract]:In order to clarify the subsalt tectonic pattern of Kuanza Basin and further guide the exploration of the basin, the characteristics of the subsalt structure of the Kwanza basin are summarized through the interpretation of seismic profiles of different structural positions. It is considered that there is a central uplift zone in the rift period of the Kuanza basin, which divides the Kuanza basin into the inner and outer kwanzaa subbasins. The Atlantic hub fault is the dividing line between the central uplift zone and the outer kwanzaa subbasin. Several secondary uplifts controlled by faults have been developed, which have been proved by drilling to be favorable oil and gas accumulation areas. The results of reservoir formation in Kuanza basin show that the conditions for forming reservoirs under salt in Kuanza basin are superior. The source rocks are developed in deep lake sag, mainly lacustrine shale, carbonate rock and sandstone of Cuvo formation, mainly developed in secondary uplift and slope zone, and the cap rock is About stage salt rock. The protruding zone adjacent to the western side of the Atlantic hub fault is the most favorable exploration zone under salt in the Kwanza basin.
【作者單位】： 北京博達(dá)瑞恒科技有限公司;中國(guó)海洋石油國(guó)際有限公司;
【分類號(hào)】：P618.13

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本文編號(hào)：1611917