柴西红三旱一号-牛鼻子梁地区上干柴沟组物源与沉积体系分析
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摘要
目前普遍认为位于柴达木盆地西部阿尔金山前的红三旱一号-牛鼻子梁地区在新近系上干柴沟组(N1)沉积时主要发育向西南方向流动的牛鼻子梁物源所形成的冲积扇-辫状河三角洲-湖泊沉积体系,这种认识难以解释以下事实:第一,在红三旱一号地面构造第一和第三高点南翼露头剖面均发育一套约350～1 470 m厚的N1杂色砾岩、砂砾岩和含砾砂岩;第二,不整合地面构造南翼露头剖面表明,在N1沉积时,该区域发育厚层灰绿色泥岩夹薄层褐色石膏沉积,为弱水动力条件的浅水湖湾环境;第三,在N1沉积时,牛鼻子梁地区是阿尔金山向东南方向延伸的古鼻梁,该古鼻梁是牛鼻子梁以北地区物源向西南方向流动的屏障。在综合研究该地区的野外露头、钻井、测井、二维地震资料和古地理背景的基础上,提出在N1沉积时,研究区发育由红三旱一号物源、牛鼻子梁西口物源和牛参1井以北物源所控制的扇三角洲-滨浅湖滩坝沉积体系。这一新认识对于重新认识与评价红三旱一号-牛鼻子梁地区石油地质条件及寻找优质有效碎屑岩储层具有重要的勘探实践意义。
People commonly consider that the alluvial fan-braided river delta-lake depositional systems,formed by Niubiziliang source transporting towards southwest direction,were developed when Upper Ganchaigou Formation(N1) of Neogene deposited in Hongsanhan No.1-Niubiziliang Area in front of Aerjin Mountain in the west of Qaidam Basin.This recognition can not explain the following facts: first,that a set of N1 variegated conglomerate,glutenite and pebbled sandstone with 350-1470m thickness was developed in the southern outcrop of the first high point and the third high point in Hongsanhan No.1 ground structure;second,that the southern outcrop section of uncomformable ground structure showed that the thick gray green mudstone was interbedded with thin brown gypsum sedimentation developed in shallow-water bays environment when the N1 deposited;thirdly,that Niubiziliang Area was the fossil nose bridge extended from Aerjin Mountain towards southeast direction when the N1 deposited,and the fossil nose bridge was a barrier wall of source provenance transporting towards southwest direction in the northern part of Niubiziliang Area.Based on the research of field outcrops,drilling,well logging,two-dimension seismic data and palaeogeographic setting,it is proposed that the fan delta-shore to shallow lake beach-bar sedimentary system,controlled by the source provenances in Hongsanhan No.1,in the west of Niubiziliang and in the north of Well Niucan 1,was developed in the area when the N1 deposited.This new cognition has important signification in oil and gas exploration for recognizing and evaluating the petroleum geological conditions and looking for high-quality clasolite reservoirs in Hongsanhan No.1-Niubiziliang Area.
People commonly consider that the alluvial fan-braided river delta-lake depositional systems,formed by Niubiziliang source transporting towards southwest direction,were developed when Upper Ganchaigou Formation(N1) of Neogene deposited in Hongsanhan No.1-Niubiziliang Area in front of Aerjin Mountain in the west of Qaidam Basin.This recognition can not explain the following facts: first,that a set of N1 variegated conglomerate,glutenite and pebbled sandstone with 350-1470m thickness was developed in the southern outcrop of the first high point and the third high point in Hongsanhan No.1 ground structure;second,that the southern outcrop section of uncomformable ground structure showed that the thick gray green mudstone was interbedded with thin brown gypsum sedimentation developed in shallow-water bays environment when the N1 deposited;thirdly,that Niubiziliang Area was the fossil nose bridge extended from Aerjin Mountain towards southeast direction when the N1 deposited,and the fossil nose bridge was a barrier wall of source provenance transporting towards southwest direction in the northern part of Niubiziliang Area.Based on the research of field outcrops,drilling,well logging,two-dimension seismic data and palaeogeographic setting,it is proposed that the fan delta-shore to shallow lake beach-bar sedimentary system,controlled by the source provenances in Hongsanhan No.1,in the west of Niubiziliang and in the north of Well Niucan 1,was developed in the area when the N1 deposited.This new cognition has important signification in oil and gas exploration for recognizing and evaluating the petroleum geological conditions and looking for high-quality clasolite reservoirs in Hongsanhan No.1-Niubiziliang Area.
引文
[1]党玉琪,尹成明,赵东升.柴达木盆地西部地区古近纪与新近纪沉积相[J].古地理学报,2004,6(3):297-306.Dang Yuqi,Yin Chengming,Zhao Dongsheng.Sedimentary facies ofthe Paleogene and Neogene in western Qaidam Basin[J].Journal ofPalaeogeography,2004,6(3):297-306.
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[6]吕友生.红三旱一号、东坪、九顶山、馒头山、不整合五构造总结报告[R].敦煌:石油工业部青海石油勘探局,1958:1-25.Lv Yousheng.Summarization paper of the Hongsanhanyihao,Dongping,Jiudingshan,Mantoushanand Buzhenhestructure[R].Dunhuang:QinghaiOil Exploration Bureau of the Department of Petroleum Industry,1958:1-25.
[7]朱乃龙.阿尔金山以南红三旱至南翼山之间地质普查总结报告[R].敦煌:石油工业部青海石油勘探局,1956:1-42.Zhu Nailong.Reconnaissance summarization paper from the Hongsanhanto Nanyishan area lies in the south of Aerjin mountain[R].Dunhuang:Qinghai Oil Exploration Bureau of the Department of Petroleum Industry,1956:1-42.
[8]易定红,裴明利,曹正林,等.冀中饶阳凹陷大王庄地区沙三段层序地层格架下的沉积体系[J].西安石油大学学报:自然科学版,2008,23(S1):106-108.Yi Dinghong,Pei Mingli,Cao Zhenglin,et al.Depositional systemanalysis of the third segment of Shahejie Formation within thesequence stratigraphic framework in Dawangzhuang Area,Raoyang Sag,Central Hebei province[J].Journal of Xi′an Shiyou University:Natural Science Edition,2008,23(S1):106-108.
[9]易定红,裴明利.饶阳凹陷大王庄地区沙一段生储盖组合分析与隐蔽油藏勘探[J].油气地质与采收率,2008,15(4):10-12.Yi Dinghong,Pei Mingli.Source-reservoir-cap rock assemblagesanalysis and subtle petroleum reservoir exploration of the firstsegment of Shahejie formation in Dawangzhuang Area,Raoyang Sag,Central Hebei province[J].Petroleum Geology and Recovery Effieieney,2008,15(4):10-12.
[10]易定红,田光荣.杏树岗-太平屯地区扶杨油层层序地层研究[J].新疆石油地质,2004,25(6):607-609.Yi Dinghong,Tian Guangrong.Study on sequence stratigraphy ofFuYang oil bed in Xingshugang and Taipingtun Area[J].XinjiangPetroleum Geology,2004,25(6):607-609.
[11]易定红,王斌婷,裴明利,等.柴西乌南地区下干柴沟组下段沉积体系研究与有利储集层预测[J].石油地质与工程,2008,22(5):10-13.Yi Dinghong,Wang Binting,Pei Mingli,et al.Study on sedimentarysystem and forecast the favorable Reservoirs of the lower segment ofGanchaigou formation in Wunan Area in the western Qaidam Basin[J].Petroleum Geology and Engineering,2008,22(5):10-13.
[12]易定红,贾义蓉,石兰亭.宝饶洼槽下白垩统层序地层与生储盖组合[J].新疆石油地质,2005,26(5):540-543.Yi Dinghong,Jia Yirong,Shi Lanting.Sequence stratigraphy andsource-reservoir-cap rock assemblages of lower Cretaecous series inBaorao Trough[J].Xinjiang Petroleum Geology,2005,26(5):540-543.
[13]杨津,黄忠范,戴福贵,等.柴达木盆地的最终定型期:第四纪[J].断块油气田,2009,16(4):51-53.Yang Jin,Huang Zhongfan,Dai Fugui,et al.Quaternary:The time forQaidam Basin fell into its final configuration[J].Fault-Block Oil&Gas Field,2009,16(4):51-53.
[14]刘震,党玉琪,李鹤永,等.柴达木盆地西部第三系油气晚期成藏特征[J].西安石油大学学报:自然科学版,2007,22(1):1-6.Liu Zhen,Dang Yuqi,Li Heyong,et al.Characteristics of the latehydrocarbon accumulation of the Tertiary in the western QaidamBasin[J].Journal of Xi′an Shiyou University:Natural Science Edition,2007,22(1):1-6.
[2]张敏,尹成明,寿建峰,等.柴达木盆地西部地区古近系及新近系碳酸盐岩沉积相[J].古地理学报,2004,6(4):391-400.Zhang Min,Yin Chengming,Shou Jianfeng,et al.Sedimentary faciesof carbonate rocks of the Paleogene and Neogene in western QaidamBasin[J].Journal of Palaeogeography,2004,6(4):391-400.
[3]刘云田.柴西第三系构造沉积演化与油气成藏[D].北京:中国科学院研究生院,2004:224-225.Liu Yuntian.Tertiary tectonic and sedimentary evolution andreservoir-formation in the Western Qaidam Basin[D].Beijing:DoctorDegree Dissertation of the Chinese Academy of Sciences,2004:224-225.
[4]王铁成,张虎权.柴西北区第三系沉积演化规律及有利区带评价[R].敦煌:青海油田公司勘探开发研究院,2004:45-65.Wang Tiecheng,Zhang Huquan.Tertiary Sedimentary evolvement ruleand the favorable play assessment in the Northwest Qaidam Basin[R].Dunhuang:Qinghai Oilfield Company Exploration&Development Research Institute,2004:45-65.
[5]曹国强.柴达木盆地西部地区第三系沉积相研究[D].北京:中国科学院研究生院,2005:115-118.Cao Guoqiang.Sedimentary facies of the Tertiary in the WesternQaidam Basin[D].Beijing:Doctor Degree Dissertation of the ChineseAcademy of Sciences,2005:115-118.
[6]吕友生.红三旱一号、东坪、九顶山、馒头山、不整合五构造总结报告[R].敦煌:石油工业部青海石油勘探局,1958:1-25.Lv Yousheng.Summarization paper of the Hongsanhanyihao,Dongping,Jiudingshan,Mantoushanand Buzhenhestructure[R].Dunhuang:QinghaiOil Exploration Bureau of the Department of Petroleum Industry,1958:1-25.
[7]朱乃龙.阿尔金山以南红三旱至南翼山之间地质普查总结报告[R].敦煌:石油工业部青海石油勘探局,1956:1-42.Zhu Nailong.Reconnaissance summarization paper from the Hongsanhanto Nanyishan area lies in the south of Aerjin mountain[R].Dunhuang:Qinghai Oil Exploration Bureau of the Department of Petroleum Industry,1956:1-42.
[8]易定红,裴明利,曹正林,等.冀中饶阳凹陷大王庄地区沙三段层序地层格架下的沉积体系[J].西安石油大学学报:自然科学版,2008,23(S1):106-108.Yi Dinghong,Pei Mingli,Cao Zhenglin,et al.Depositional systemanalysis of the third segment of Shahejie Formation within thesequence stratigraphic framework in Dawangzhuang Area,Raoyang Sag,Central Hebei province[J].Journal of Xi′an Shiyou University:Natural Science Edition,2008,23(S1):106-108.
[9]易定红,裴明利.饶阳凹陷大王庄地区沙一段生储盖组合分析与隐蔽油藏勘探[J].油气地质与采收率,2008,15(4):10-12.Yi Dinghong,Pei Mingli.Source-reservoir-cap rock assemblagesanalysis and subtle petroleum reservoir exploration of the firstsegment of Shahejie formation in Dawangzhuang Area,Raoyang Sag,Central Hebei province[J].Petroleum Geology and Recovery Effieieney,2008,15(4):10-12.
[10]易定红,田光荣.杏树岗-太平屯地区扶杨油层层序地层研究[J].新疆石油地质,2004,25(6):607-609.Yi Dinghong,Tian Guangrong.Study on sequence stratigraphy ofFuYang oil bed in Xingshugang and Taipingtun Area[J].XinjiangPetroleum Geology,2004,25(6):607-609.
[11]易定红,王斌婷,裴明利,等.柴西乌南地区下干柴沟组下段沉积体系研究与有利储集层预测[J].石油地质与工程,2008,22(5):10-13.Yi Dinghong,Wang Binting,Pei Mingli,et al.Study on sedimentarysystem and forecast the favorable Reservoirs of the lower segment ofGanchaigou formation in Wunan Area in the western Qaidam Basin[J].Petroleum Geology and Engineering,2008,22(5):10-13.
[12]易定红,贾义蓉,石兰亭.宝饶洼槽下白垩统层序地层与生储盖组合[J].新疆石油地质,2005,26(5):540-543.Yi Dinghong,Jia Yirong,Shi Lanting.Sequence stratigraphy andsource-reservoir-cap rock assemblages of lower Cretaecous series inBaorao Trough[J].Xinjiang Petroleum Geology,2005,26(5):540-543.
[13]杨津,黄忠范,戴福贵,等.柴达木盆地的最终定型期:第四纪[J].断块油气田,2009,16(4):51-53.Yang Jin,Huang Zhongfan,Dai Fugui,et al.Quaternary:The time forQaidam Basin fell into its final configuration[J].Fault-Block Oil&Gas Field,2009,16(4):51-53.
[14]刘震,党玉琪,李鹤永,等.柴达木盆地西部第三系油气晚期成藏特征[J].西安石油大学学报:自然科学版,2007,22(1):1-6.Liu Zhen,Dang Yuqi,Li Heyong,et al.Characteristics of the latehydrocarbon accumulation of the Tertiary in the western QaidamBasin[J].Journal of Xi′an Shiyou University:Natural Science Edition,2007,22(1):1-6.
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