本文關鍵詞： NW向斷層 基底 形成機制 南五凹 蘇北-南黃海盆地　出處：《中國礦業(yè)大學學報》2017年06期 　論文類型：期刊論文

【摘要】：通過重磁資料分析和地震資料的解釋,結(jié)合前人對周緣地區(qū)NW向構造的研究成果,分析了蘇北-南黃海盆地的構造演化與斷層特征,揭示了該盆地陸地部分和海域部分NW構造的不同表現(xiàn)形式,指出海域內(nèi)NW向斷層對油氣成藏具有制約作用.研究結(jié)果表明:斷拗期南五凹存在3個沉積中心,NW向斷層拉張率12%~14%,斷層最大活動速率170m/Ma,控制了阜寧組烴源巖的發(fā)育.陸上隱伏有3條NW向的構造轉(zhuǎn)換帶,錯斷和限制了NE向7個控凹斷層和建湖隆起的展布;海域3條顯現(xiàn)的NW向斷層控制了南二凹和南五凹的平面形態(tài),以及南四凹、南六凹和南七凹的雁行式排列.海域成藏受到NW向構造的控制,預測油氣主要分布在阜寧組的沉積中心附近.
[Abstract]:Based on the analysis of gravity and magnetic data and the interpretation of seismic data, the tectonic evolution and fault characteristics of the Huang Hai basin in the north and south of Jiangsu Province are analyzed by combining with the previous research results of NW trending structures in the peripheral area. The different forms of NW structures in the land and sea areas of the basin are revealed. It is pointed out that the NW trending fault in the sea area has a restrictive effect on hydrocarbon accumulation. The results show that there are three sedimentary centers in Nanwu depression during the fault depression. The extensional rate of NW fault is 12 / 14 and the maximum activity rate of fault is 170 m / Ma. which controls the source rock generation of Funing formation. There are three NW-trending tectonic transition zones on land. The fault fault limits the distribution of seven NE trending controlled concave faults and Jianhu uplift, and three NW faults in the sea area control the plane morphology of the South second and South Fifth concave, as well as the South fourth Concave. The reservoir formation in the sea area is controlled by the NW trending structure, and the oil and gas distribution is mainly near the sedimentary center of Funing formation.
【作者單位】： 中海油研究總院;
【基金】：國家科技重大專項(2016ZX05024-002)
【分類號】：P618.13

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