准噶尔盆地陆东-五彩湾地区石炭系火山机构类型及其油气勘探
摘要
准噶尔盆地陆东-五彩湾地区石炭系火山岩油气勘探近年来取得了突破,表明该区具有进一步开展油气勘探的潜力。为有效指导该区石炭系火山岩油气勘探,应用岩心、录井、测井、地震、重力、磁力和建场测深资料,通过火山岩成因、岩性、岩相、喷发序列组合和空间分布研究,探讨了陆东-五彩湾地区石炭系火山机构类型。认识到陆东-五彩湾地区石炭系火山岩岩性复杂,以安山岩、火山角砾岩、凝灰岩和沉凝灰岩为主,岩相类型以爆发相、溢流相和火山沉积相最发育。该火山岩发育了两种典型喷发序列组合,一种以中酸性熔岩与火山碎屑岩共同发育为特征,发育在滴西21井区～滴西11井区,为层火山产物;另一种以中基性熔岩的大面积分布为特征,发育在五彩湾和滴水泉凹陷,为盾火山产物。两种火山机构的提出将对陆东-五彩湾地区石炭系火山岩勘探起到重要指导作用。
The hydrocarbon exploration of carboniferous volcanic rocks was succeeded in Ludong-Wucaiwan Region of Junggar Basin,it was indicated that it had the potential for oil and gas exploration in this area.To guide the hydrocarbon exploration effectively,the data of genesis,lithologies,facies,eruption succession assemblages and space distribution of the carboniferous volcanic rocks in Ludong-Wucaiwan Region were used based on core,mud logging,wireline logging,seismic data,gravity,magnetism and build-up depth data and their volcano types were discussed.Study shows that the volcanic rock types are predominantly of andesites,volcanic breccias,tuffs and tuffites that resulted from explosion,effusion and volcanic sedimentation facies for the most parts.The volcanic rocks in Ludong-wucaiwan Region develop two typical types of eruption succession assemblages.One is characterized as intermediate-acidic lava and pyroclastic rock interbeds,they are products of stratovolcanoes development in the area of Dixi 21 to Dixi 11,the other behaves as wide distribution of intermediate-basic lavas,which may pile up from shield volcanoes at the Wucaiwan and Dishuiquan Sags.The two volcanic rock types provide an important guidance for oil and gas exploration in Ludong-Wucaiwan Region of Junggar Basin.
The hydrocarbon exploration of carboniferous volcanic rocks was succeeded in Ludong-Wucaiwan Region of Junggar Basin,it was indicated that it had the potential for oil and gas exploration in this area.To guide the hydrocarbon exploration effectively,the data of genesis,lithologies,facies,eruption succession assemblages and space distribution of the carboniferous volcanic rocks in Ludong-Wucaiwan Region were used based on core,mud logging,wireline logging,seismic data,gravity,magnetism and build-up depth data and their volcano types were discussed.Study shows that the volcanic rock types are predominantly of andesites,volcanic breccias,tuffs and tuffites that resulted from explosion,effusion and volcanic sedimentation facies for the most parts.The volcanic rocks in Ludong-wucaiwan Region develop two typical types of eruption succession assemblages.One is characterized as intermediate-acidic lava and pyroclastic rock interbeds,they are products of stratovolcanoes development in the area of Dixi 21 to Dixi 11,the other behaves as wide distribution of intermediate-basic lavas,which may pile up from shield volcanoes at the Wucaiwan and Dishuiquan Sags.The two volcanic rock types provide an important guidance for oil and gas exploration in Ludong-Wucaiwan Region of Junggar Basin.
引文
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[3]陈岩.克拉玛依油田一区石炭系火山岩油藏剖析[J].新疆石油地质,1988,9(1):17～31.
[4]张朝军,石昕,吴晓智,等.准噶尔盆地石炭系油气富集条件及有利勘探领域预测[J].中国石油勘探,2004,(1):11～15.
[5]董大忠,蔚远江,张义杰,等.准噶尔盆地加快天然气勘探有利条件及预探领域分析[J].中国石油勘探,2006,(3):6～12.
[6]肖序常,汤耀庆,冯益民,等.新疆北部及其邻区大地构造[M].北京:地质出版社,1992.1～171.
[7]何国琦,李茂松,刘德权,等.中国新疆古生代地壳演化与成矿[M].香港:香港文化教育出版社;乌鲁木齐:新疆人民出版社,1994.
[8]韩宝福,何国琦,王式光.后碰撞幔源岩浆活动、底垫作用及准噶尔盆地的性质[J].中国科学(D辑),1999,29(1):16～21.
[9]郑建平,王方正,成中梅,等.拼合的准噶尔盆地基底:基底火山岩Sr-Nd同位素证据[J].地球科学(中国地质大学学报),2000,25(2):179～185.
[10]肖文交,韩春明,袁超,等.新疆北部石炭纪-二叠纪独特的构造-成矿作用:对古亚洲洋构造域南部大地构造演化的制约[J].岩石学报,2006,22(5):1062～1076.
[11]Zheng Jianping,Sun Min,Zhao Guochun,et al.Elemental and Sr-Nd-Pb isotopic geochemistry of Late Paleozoic volcanic rocks be-neath the Junggar basin,NWChina:I mplications for the formation and evolution of the basin basement[J].Journal of Asian Earth Sciences,2007,29(5～6):778～794.
[12]陶奎元.火山岩相构造学[M].南京:江苏科学技术出版社,1994.12～31.
[13]邱家骧,陶奎元,赵俊磊,等.火山岩[M].北京:地质出版社,1996.1～58.
[14]王仁冲,徐怀民,邵雨,等.准噶尔盆地陆东地区石炭系火山岩储层特征[J].石油学报,2008,29(3):350～355.
[15]罗静兰,邵红梅,张成立.火山岩油气藏研究方法与勘探技术综述[J].石油学报,2003,24(1):31～38.
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