济阳拗陷新生代火成岩的识别
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摘要
火成岩与沉积岩的岩石物性有明显区别,具有密度大、电阻率高、磁化率高、地震波速度高及对地震波能量 衰减强烈等特点,因此火成岩在沉积盆地内会产生明显的地球物理异常特征。研究表明,济阳拗陷是一个中、新 生代的断陷盆地,盆地内发育了古近纪早期、古近纪晚期、新近纪-第四纪等三期新生代火成岩,具有较明显的 板状、丘状、盆状、蘑菇状、杂乱状等地震反射特征,表现为显著的重力正异常和磁性异常,异常主要集中在南部 的高青和北部的无棣两大异常中心区,代表了济阳拗陷火山活动的两个中心。综合分析地震、钻井、重力、磁力 等资料后认为,济阳拗陷火成岩总体沿深断裂分布,火成岩岩性以基性岩为主,可以分为南、北两带,新生代火 成岩主要分布于东营凹陷西部和惠民凹陷东部,岩浆活动由北向南迁移。
There is significant difference in petrophysical property between the igneous rock and sedimentary rock,the former is characteristics of large density, higher resistivity and magnetic susceptibility higher velocity of seismic wave and strong attenuation of energy of seismic wave, therefore, the igneous rock can produce significant geophysical anomalous feature in sedimentary basin. The studied results showed that the Jiyang depression is Mesozoic and Cenozoic fault basin,the three epochs of Cenozoic igneous rock such as Early Paleogene,Late Paleogene and Neogene-Quaternary have been developed in the basin that have distinguished seismic reflection feature of sheetlike, dome, basin-shaped, mushroom and fuzzy and appear distinguished positive gravitational anomaly and magnetic anomaly. The anomaly manly concentrates in two central anomaly zones: Gaoqing in the south and Wudi in the north where the two centers of volcanic activity in Jiyang depression are presented. It is considered after integrative analysis of seismic,drilling,gravitational and magnetic data that the igneous rocks in Jiyang depression generally distribute along the deep faults, the igneous lithology mainly is basic rock that could be divided into two belts:the south and north belts. The Cenozoic igneous rocks mainly distribute in the west part of Dongying sag and the east part of Huimin sag, magmatic activities tends to migrate from the north to the south.
There is significant difference in petrophysical property between the igneous rock and sedimentary rock,the former is characteristics of large density, higher resistivity and magnetic susceptibility higher velocity of seismic wave and strong attenuation of energy of seismic wave, therefore, the igneous rock can produce significant geophysical anomalous feature in sedimentary basin. The studied results showed that the Jiyang depression is Mesozoic and Cenozoic fault basin,the three epochs of Cenozoic igneous rock such as Early Paleogene,Late Paleogene and Neogene-Quaternary have been developed in the basin that have distinguished seismic reflection feature of sheetlike, dome, basin-shaped, mushroom and fuzzy and appear distinguished positive gravitational anomaly and magnetic anomaly. The anomaly manly concentrates in two central anomaly zones: Gaoqing in the south and Wudi in the north where the two centers of volcanic activity in Jiyang depression are presented. It is considered after integrative analysis of seismic,drilling,gravitational and magnetic data that the igneous rocks in Jiyang depression generally distribute along the deep faults, the igneous lithology mainly is basic rock that could be divided into two belts:the south and north belts. The Cenozoic igneous rocks mainly distribute in the west part of Dongying sag and the east part of Huimin sag, magmatic activities tends to migrate from the north to the south.
引文
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[2] 陈庆春等．试论火成岩储层的类型及其成因特征．地 质论评,2003,49(3):286～291
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[15] 曾广策等．东营凹陷新生代火成岩及其与盆地演化, 油藏的关系．地球科学:中国地质大学学报,1997, 22(2):157～164
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[17]刘中云等．渤海湾盆地第三系火成岩及其成因．石油 大学学报:自然科学版,2001,25(1):22～26
[18] 赫英等．胜利油田火成岩类、盆地演化及其CO2-Au 成藏成矿效应．地质科学,2001,36(4):454～464
[19] 王槐基．古火山活动的地震地质解释．石油地球物理 勘探,1994,29(3):325～336
[2] 陈庆春等．试论火成岩储层的类型及其成因特征．地 质论评,2003,49(3):286～291
[3] 蒲玉国．正理庄高39块火成岩油藏特征．特种油气 藏,1997,4(4):10～14
[4]操应长等．山东惠民凹陷商741块火成岩油藏储集空 间类型及形成机理探讨．岩石学报,1999,15(1):129 ～136
[5]刘惠民等．临邑洼陷商741火成岩油藏岩相及储集层 研究．地质论评,2000,46(4):425～430
[6] 钱峥．济阳拗陷罗151块火成岩油藏储集层概念模 型．石油勘探与开发,1999,26(6):72～74,94
[7] 李湘军等．滨南油田火成岩油藏勘探技术．断块油气 田,2002,9(3):5～8
[8] 武恒志等．罗151井区火成岩储层的地震信息研究． 石油大学学报:自然科学版,2001,25(1):77～79,86
[9] 吕希学等．根据地震勘查信息预测火成岩储集体．浙 江大学学报(工学版),2003,37(2):249～253
[10] 严慧中等．火成岩储层地震综合技术的应用．石油地 球物理勘探,1999,34(增刊):89～95
[11]钟广法等．塔中地区火成岩的地震相及圈闭特征．江 汉石油学院学报,1997,19(3)
[12]李明等．松辽盆地北部深层火成岩气藏识别与预测技 术．石油地球物理勘探,2002,37(5):477～484
[13] 田海芹等．山东昌乐-临朐火成岩孔隙系统研究．岩 石学报,2002,16(2):174～182
[14] 邱隆伟等．山东沾化凹陷罗151井区隐伏辉绿岩的产 状及岩相带划分．岩石学报,2000,16(3):413～419
[15] 曾广策等．东营凹陷新生代火成岩及其与盆地演化, 油藏的关系．地球科学:中国地质大学学报,1997, 22(2):157～164
[16] 王秉海等．胜利油田地质研究与勘探实践．山东东营: 石油大学出版社,1992,234～238
[17]刘中云等．渤海湾盆地第三系火成岩及其成因．石油 大学学报:自然科学版,2001,25(1):22～26
[18] 赫英等．胜利油田火成岩类、盆地演化及其CO2-Au 成藏成矿效应．地质科学,2001,36(4):454～464
[19] 王槐基．古火山活动的地震地质解释．石油地球物理 勘探,1994,29(3):325～336
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