准噶尔盆地车排子地区古近系沉积相研究
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摘要
从单井相分析入手,结合地震、测井、古生物、分析化验资料和岩相古地理的研究成果,分析了准噶尔盆地车排子地区古近系沉积相类型及特征,阐明了沉积相带的平面展布特征及沉积演化的控制因素,并进行了有利区带的预测。结果表明,白垩纪后受构造运动的影响,车排子地区发生沉降,在西北高东南低的古地形背景下,差异沉积明显。受湖平面变化、古地貌、物源供给和古气候的控制,古近纪紫泥泉子组沉积时期发育冲积扇、扇三角洲和湖泊沉积,物源来自西北方向;安集海河组沉积时期湖盆范围增大,物源主要来自北方,冲积扇和扇三角洲沉积向北缩进,研究区南部广泛发育滨浅湖沉积。地层发育受沉积特征的控制,有利储集砂体主要为扇三角洲分流河道及水下分流河道砂体,构造-岩性圈闭是研究区下步的勘探重点。
According to study on regional deposition, core observation and stratigraphic division and correlation, the individu- al-well sedimentary facies is analyzed. The numerous data of seismic, logging, paleontology and the analysis results of the lithofacies palegeographic conditions have been utilized to establish the frameworks of the lithofacies paleography of lower Cretaceous in Chepaizi area of Junggar Basin. The sedimentation development, variation of sedimentary environment, sedimentation variation laws and control factors on sedimentation development are investigated. The favorable areas are offered herein. The results show that, due to the tectonic movement, the Chepaizi area ever experienced subsidence, under the paleo-topography of northwest high and southeast low. The Paleogene Ziniquanzi group is composed of alluvial fan, fan delta and lake sediments, that come mainly from the northwest. In the Anjihai River formation, the lacustrine area expanded with source mainly from the north, and the alluvial fan and fan shrank northward, meanwhile, the study area is well developed in the southern shallow lake and beach bar deposits. The stratigraphic development is controlled by sedimentary features. Favorable reservoir sand body is composed of distributary channel deposit and subaqueous distributary channel deposit. Structure-depositional trap is the next exploration focus in study area.
According to study on regional deposition, core observation and stratigraphic division and correlation, the individu- al-well sedimentary facies is analyzed. The numerous data of seismic, logging, paleontology and the analysis results of the lithofacies palegeographic conditions have been utilized to establish the frameworks of the lithofacies paleography of lower Cretaceous in Chepaizi area of Junggar Basin. The sedimentation development, variation of sedimentary environment, sedimentation variation laws and control factors on sedimentation development are investigated. The favorable areas are offered herein. The results show that, due to the tectonic movement, the Chepaizi area ever experienced subsidence, under the paleo-topography of northwest high and southeast low. The Paleogene Ziniquanzi group is composed of alluvial fan, fan delta and lake sediments, that come mainly from the northwest. In the Anjihai River formation, the lacustrine area expanded with source mainly from the north, and the alluvial fan and fan shrank northward, meanwhile, the study area is well developed in the southern shallow lake and beach bar deposits. The stratigraphic development is controlled by sedimentary features. Favorable reservoir sand body is composed of distributary channel deposit and subaqueous distributary channel deposit. Structure-depositional trap is the next exploration focus in study area.
引文
[1]冯增昭.沉积岩石学[M].2版.北京:石油工业出版社,1993.
[2]冯增昭,王英华,刘焕杰,等.中国沉积学[M].北京:石油工业出版社,1994.
[3]赵澄林,吴崇筠.油区岩相古地理[M].东营:石油大学出版社,2001.
[4]张义杰,柳广弟.准噶尔盆地复合油气系统特征、演化与油气勘探方向[J].石油勘探与开发,2002,29(1):36-38.
[5]何登发,陈新发,张义杰,等.准噶尔盆地油气富集规律[J].石油学报,2004,25(4):2-9.
[6]邢凤存,陆永潮,刘传虎,等.车排子地区构造-古地貌特征及其控砂机制[J].石油与天然气地质,2008,29(1):78-83.
[7]新疆维吾尔自治区地质矿产局.新疆维吾尔自治区区域地质志[M].北京:地质出版社,1983.
[8]新疆维吾尔自治区区域地层表编写组.西北地区区域地层表[M].北京:地质出版社,1981.
[9]新疆油气区石油地质志(上册)编写组.中国石油地质志·卷十五[M].北京:石油工业出版社,1993.
[10]孙永传.碎屑岩沉积相和沉积环境[M].北京:地质出版社,1986.
[11]王国光,王艳忠,操应长,等.临邑洼陷南斜坡沙河街组三角洲沉积微相粒度概率累积曲线组合特征[J].油气地质与采收率,2006,13(6):30-32.
[12]冯建伟,杨绍春.胜坨油田二区东三段沉积微相研究[J].西安石油大学学报,2005,20(2):11-16.
[13]袁静,杜玉民,李云南.惠民凹陷古近系碎屑岩主要沉积环境粒度概率累积曲线特征[J].石油勘探与开发,2003,30(3):103-106.
[14]郭兰,丁超,闫继福.鄂尔多斯盆地子长油田安定区延长组长6段沉积微相[J].油气地质与采收率,2009,16(3):11-14.
[15]由伟丰,孟闲龙.准噶尔盆地车排子地区排2井油源分析[J].中国西部油气地质,2006,2(1):56-59.
[2]冯增昭,王英华,刘焕杰,等.中国沉积学[M].北京:石油工业出版社,1994.
[3]赵澄林,吴崇筠.油区岩相古地理[M].东营:石油大学出版社,2001.
[4]张义杰,柳广弟.准噶尔盆地复合油气系统特征、演化与油气勘探方向[J].石油勘探与开发,2002,29(1):36-38.
[5]何登发,陈新发,张义杰,等.准噶尔盆地油气富集规律[J].石油学报,2004,25(4):2-9.
[6]邢凤存,陆永潮,刘传虎,等.车排子地区构造-古地貌特征及其控砂机制[J].石油与天然气地质,2008,29(1):78-83.
[7]新疆维吾尔自治区地质矿产局.新疆维吾尔自治区区域地质志[M].北京:地质出版社,1983.
[8]新疆维吾尔自治区区域地层表编写组.西北地区区域地层表[M].北京:地质出版社,1981.
[9]新疆油气区石油地质志(上册)编写组.中国石油地质志·卷十五[M].北京:石油工业出版社,1993.
[10]孙永传.碎屑岩沉积相和沉积环境[M].北京:地质出版社,1986.
[11]王国光,王艳忠,操应长,等.临邑洼陷南斜坡沙河街组三角洲沉积微相粒度概率累积曲线组合特征[J].油气地质与采收率,2006,13(6):30-32.
[12]冯建伟,杨绍春.胜坨油田二区东三段沉积微相研究[J].西安石油大学学报,2005,20(2):11-16.
[13]袁静,杜玉民,李云南.惠民凹陷古近系碎屑岩主要沉积环境粒度概率累积曲线特征[J].石油勘探与开发,2003,30(3):103-106.
[14]郭兰,丁超,闫继福.鄂尔多斯盆地子长油田安定区延长组长6段沉积微相[J].油气地质与采收率,2009,16(3):11-14.
[15]由伟丰,孟闲龙.准噶尔盆地车排子地区排2井油源分析[J].中国西部油气地质,2006,2(1):56-59.
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