海拉尔盆地苏德尔特油田层序地层特征及其与油气分布关系
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摘要
海拉尔盆地位于内蒙古自治区呼伦贝尔盟境内,是一个中、新生代陆相断陷盆地,基底以德尔布干断裂为界,东部属于天山-兴安早海西期褶皱区的内蒙-大兴安岭褶皱系,西部属于西伯利亚板块的额尔古纳地块,走向北东方向。本论文旨在运用储层地质学、测井地质学、沉积学理论为指导,采取实验分析和地质综合分析相结合的方法,重点以苏德尔特油田兴安岭油层的储层精细对比、储层沉积特征为中心任务开展工作。
根据岩心、测井曲线及录井资料,运用高分辨率层序地层分析技术在全区完成三级层序和四级层序划分与对比,识别出3个不整合面和11个沉积转换面,划分为3个三级层序和13个四级层序,从下至上依次命名为SQ0、SQ1、……、SQ11、SQ12。并建立了层序与油组的对应关系,建立起层序地层格架,在四级层序等时格架约束下,进一步将主要含油层系I、II油组划分为26个小层,其中I油组对应于1—10小层,II油组对应于11—26小层。
在层序格架内,总结了四级层序的展布与演化特征和砂体与油气分布特征,SQ0-SQ1(铜钵庙组)沉积前,全区遭受剥蚀夷平,仅在贝28块-贝14块西部地SQ0-SQ1地层得以保存,SQ2沉积前,苏德尔特地区整体处于剥蚀区域,SQ2只在部分井区有沉积,之后苏德尔特地区持续沉降,区内接受较为完整的SQ3-SQ5沉积,SQ5沉积末期,SQ5层序和SQ4下降半旋回部分遭受剥蚀,而贝16块处于断层下降盘, SQ5-SQ6发育完整。SQ7-SQ12沉积期,苏德尔特地区整体下降,全区接受沉积,SQ7-SQ12沉积旋回完整。
本区重点对于I、II油组进行了小层划分对比。砂体识别主要通过岩芯和实验分析,同时结合测井曲线特征。在此基础上,得出了各个小层的砂体厚度,并分析了砂体的展布特征,同时对于I、II油组主力含油小层进行了油藏剖面划分对比。油藏识别主要通过测井解释结果和试油试采结果进行分析的。在此基础上,得出了各个小层的含油层位厚度和含油层位深度。再利用测井解释资料和试油试采资料对其它井进行井和井之间的油层对比,进而划定油藏在平面上的基本分布范围,在结合小层砂厚图对油藏平面分布进行延展。由此确定了油藏在平面上的分别特征。
Hailaer basin,which is located in the territory of Hulunbeier league of neimenggu autonomous region, is a meso-cenozoic terrestrial rifted basin, Deerbugan rupture is the boundary for basement of Hailaer basin,The eastern basion belongs to neimeng-daxing'anling ford system of Tianshan-Xing'an’s early hercynian forded region,and the western basion belongs to Eergu'na block of Siberia plate, towards ne-trending. This thesis takes reservoir geology,logging geology,sedimentology theory as its instrument,by adopting experimental analysis in combination with comprehensive geological analysis.It focus on fine reservoir correlation and reservoir sedimentary features of Xing’anling group of Suderte Area.
According to core data,logging well data, logging data, by using high resolution sequence stratigraphy ,third-order sequence and four-order sequence division and correlation has established, 3 unconformity and 11 sedimentary transformation surface have been identified,which are divided into 3 third-order sequence and 13 four-order sequence,from bottom to top,named SQ0、SQ1、……、SQ11、SQ12. the corresponding relation between sequence and oil group have established,and also have established sequence stratigraphic framework,under the constraint of four-order isochronous stratigraphic framework,we divided I、II oil group of the main oil bearing series into 26 layers,including 1 to 10 layers of I oil group,11 to 26 layers of II oil group.
Within sequence framework,we summarize the spreading and evolution characteristics of four-order sequence and sand body with hydrocarbon distribution.before the deposition of SQ0-SQ1(Tongbomiao group),the whole area sufferd denudation planation,only SQ0-SQ1 formation in west bei 28 area -bei 14 area preserved. Before the deposition of SQ2,all Sudeerte area was under erosion.SQ2 only deposided in some wells,after that, Sudeerte continued subsiding,received more complete SQ3-SQ5 deposition, at the end of SQ5 deposition period, some SQ5 sequence and SQ4 droped semi-cycle were eroded,but bei 16 area was in thrown side,SQ5-SQ6 grew completely.during SQ7-SQ12 deposition period, the whole Sudeerte area accepted deposition, SQ7-SQ12 had a complete sedimentary cycle. Focus on layer division and contrast of I、II oil group in this area.The identification of sand body is mainly according to core and experimental analysis,combiled with well logging characteristics.On the basis of which, sand body thickness has been obtained then,and analyze spreading characteristics of sand body,also,we divide and correlate reservoir profile of oil bearing layers of I、II oil group. Reservoir identification is by the analysis of logging interpretation and oil-mining test,on this basis,we conclude the thickess and deep of oil bearing layers of every layer.then by using logging interpretation and oil-mining test, we continue to correlate oil layer among other wells,so we can confirm reservoir planar distribution,by combiling sand body thickness graph,we can extent reservoir planar distribution,to determine reservoir planar distribution characteristics.
根据岩心、测井曲线及录井资料,运用高分辨率层序地层分析技术在全区完成三级层序和四级层序划分与对比,识别出3个不整合面和11个沉积转换面,划分为3个三级层序和13个四级层序,从下至上依次命名为SQ0、SQ1、……、SQ11、SQ12。并建立了层序与油组的对应关系,建立起层序地层格架,在四级层序等时格架约束下,进一步将主要含油层系I、II油组划分为26个小层,其中I油组对应于1—10小层,II油组对应于11—26小层。
在层序格架内,总结了四级层序的展布与演化特征和砂体与油气分布特征,SQ0-SQ1(铜钵庙组)沉积前,全区遭受剥蚀夷平,仅在贝28块-贝14块西部地SQ0-SQ1地层得以保存,SQ2沉积前,苏德尔特地区整体处于剥蚀区域,SQ2只在部分井区有沉积,之后苏德尔特地区持续沉降,区内接受较为完整的SQ3-SQ5沉积,SQ5沉积末期,SQ5层序和SQ4下降半旋回部分遭受剥蚀,而贝16块处于断层下降盘, SQ5-SQ6发育完整。SQ7-SQ12沉积期,苏德尔特地区整体下降,全区接受沉积,SQ7-SQ12沉积旋回完整。
本区重点对于I、II油组进行了小层划分对比。砂体识别主要通过岩芯和实验分析,同时结合测井曲线特征。在此基础上,得出了各个小层的砂体厚度,并分析了砂体的展布特征,同时对于I、II油组主力含油小层进行了油藏剖面划分对比。油藏识别主要通过测井解释结果和试油试采结果进行分析的。在此基础上,得出了各个小层的含油层位厚度和含油层位深度。再利用测井解释资料和试油试采资料对其它井进行井和井之间的油层对比,进而划定油藏在平面上的基本分布范围,在结合小层砂厚图对油藏平面分布进行延展。由此确定了油藏在平面上的分别特征。
Hailaer basin,which is located in the territory of Hulunbeier league of neimenggu autonomous region, is a meso-cenozoic terrestrial rifted basin, Deerbugan rupture is the boundary for basement of Hailaer basin,The eastern basion belongs to neimeng-daxing'anling ford system of Tianshan-Xing'an’s early hercynian forded region,and the western basion belongs to Eergu'na block of Siberia plate, towards ne-trending. This thesis takes reservoir geology,logging geology,sedimentology theory as its instrument,by adopting experimental analysis in combination with comprehensive geological analysis.It focus on fine reservoir correlation and reservoir sedimentary features of Xing’anling group of Suderte Area.
According to core data,logging well data, logging data, by using high resolution sequence stratigraphy ,third-order sequence and four-order sequence division and correlation has established, 3 unconformity and 11 sedimentary transformation surface have been identified,which are divided into 3 third-order sequence and 13 four-order sequence,from bottom to top,named SQ0、SQ1、……、SQ11、SQ12. the corresponding relation between sequence and oil group have established,and also have established sequence stratigraphic framework,under the constraint of four-order isochronous stratigraphic framework,we divided I、II oil group of the main oil bearing series into 26 layers,including 1 to 10 layers of I oil group,11 to 26 layers of II oil group.
Within sequence framework,we summarize the spreading and evolution characteristics of four-order sequence and sand body with hydrocarbon distribution.before the deposition of SQ0-SQ1(Tongbomiao group),the whole area sufferd denudation planation,only SQ0-SQ1 formation in west bei 28 area -bei 14 area preserved. Before the deposition of SQ2,all Sudeerte area was under erosion.SQ2 only deposided in some wells,after that, Sudeerte continued subsiding,received more complete SQ3-SQ5 deposition, at the end of SQ5 deposition period, some SQ5 sequence and SQ4 droped semi-cycle were eroded,but bei 16 area was in thrown side,SQ5-SQ6 grew completely.during SQ7-SQ12 deposition period, the whole Sudeerte area accepted deposition, SQ7-SQ12 had a complete sedimentary cycle. Focus on layer division and contrast of I、II oil group in this area.The identification of sand body is mainly according to core and experimental analysis,combiled with well logging characteristics.On the basis of which, sand body thickness has been obtained then,and analyze spreading characteristics of sand body,also,we divide and correlate reservoir profile of oil bearing layers of I、II oil group. Reservoir identification is by the analysis of logging interpretation and oil-mining test,on this basis,we conclude the thickess and deep of oil bearing layers of every layer.then by using logging interpretation and oil-mining test, we continue to correlate oil layer among other wells,so we can confirm reservoir planar distribution,by combiling sand body thickness graph,we can extent reservoir planar distribution,to determine reservoir planar distribution characteristics.
引文
[1] A. I.莱复生.《石油地质学》.北京:地质出版社,1975
[2]Brown, A.R., 1999, Interpretation of Three-dimensional Seismic Data, Fifth Edition: AAPG Memoir 42, 514
[3]Nancye H Dawers and John R Underhill. The role of fault interaction and linkage in controlling synrift stratigraphic sequences: late Jurassic, Statfjord East area, Northern North Sea[J]. AAPG ,2000,84(1):45-64.
[4] Vail P.R.:Sequence stratigraphy workbook,fundamentals ofsequence stratigraPhy,In:AAPG Annual Convention Short Course.Hous-ton,Texas,1998.
[5]Van Wagoner J.C.et al.:Siliciclastic sequence stratigraphy in well logs , cores and outcrops:concepts for highresolution correlation of time and facies.AAPG , Methods in Exploration Series7,1990,55:l~240.
[6]Van Wagoner J C,Mitchum R M,campion K M and Rahmanion V D,Siliciclastic sequence stratigraphy in well ,cores and outcrops-concept for high-resolution correlation of times and facies.AAPG Methods in Exploration Series, 1990(7):P1-55.
[7]A.J.迪克斯著,冷鹏华等译,石油开发地质[M].石油工业出版社,1992
[8]陈守田,李忠权,于洪金,贝尔凹陷含油气系统划分及特征,成都理工大学学报(自然科学版),2004,31(4)364～368
[9]陈均亮等,海拉尔盆地构造演化及油气勘探前景,地质科学,2007,42(1):147～159
[10]崔全章,孙增久,海拉尔盆地贝尔凹陷断裂特征与油气富集规律,2005,40(增刊):82～88
[11]邓宏文,王洪亮,祝永军等,高分辨率层序地层学-原理及应用[M].地质出版社,2002
[12]戴启德,黄玉杰,石油开发地质学[M].石油大学出版社,2004
[13]樊太亮,朱琳,吉尔噶朗图凹陷沉积层序几何构型[J].石油与天然气地质,1998,19(2):99-105.
[14]樊太亮,李卫东,层序地层应用于陆相油藏预测的成功实例.石油学报,1999,20(2):12～17
[15]纪友亮,张世奇,陆相断陷湖盆层序地层学[M],北京:石油工业出版社,1996,1~70
[16]胡咏,于兴河,达江,高分辨率层序地层学在油藏描述中的运用,中国西部油气地质,2005, 1(2):198～203
[17]黄有泉,渠永宏,海拉尔盆地贝尔凹陷南屯组兴安岭群油组划分原则,大庆石油地质与开发,2006,25(5):21～26
[18]李丕龙,庞雄奇.隐蔽油气藏形成机理与勘探实践,见:第三届隐蔽油气藏国际学术研讨会论文集.北京:石油工业出版社,2004
[19]刘招君,程日辉,易海永.层序地层学的概念、进展与争论.世界地质,1994,13(3):56～68.
[20]马欣本,MT油田砂岩储层高分辨率层序地层分析,江汉石油学院学报,2002,24(3):36～40
[21]隋峰,海拉尔盆地贝尔凹陷地层划分的探讨,大庆石油地质与开发,2005,8(增刊):25-26
[22]吴志均,低渗砂岩气藏地质特征和开发对策探讨,钻采工艺,2004,27(4):103～106
[23]吴志均,何顺利,低渗砂岩气藏地质特征和开发对策探讨,钻采工艺,2004,27(4):103～107
[24]王振奇,张昌民,张尚锋,侯国伟,油气储层的层次划分和对比技术,石油与天然气地质,2002,23(1):70-75
[25]徐怀大等,地震地层学解释基础.北京:中国地质大学出版社1990
[26]徐怀大,赵政璋,樊太亮等.从地震地层学到层序地层学.石油工业出版社,1997
[27]尹太举等,层序地层学在油田开发中的应用实践.沉积学报,2005,23(4):664～671
[28]杨景强.沉积相测井分析灰色理论方法研究:[硕士学位论文].大庆石油学院:1999.
[29]叶泰然,郑荣才,文华国等,高分辨率层序地层学在鄂尔多斯盆地苏里格气田苏6井区下石盒子组砂岩储层预测中的应用,沉积学报,2006,24(2):259-261
[30]张荻楠等,海拉尔盆地乌尔逊-贝尔凹陷油藏地质特征及有效开发方法研究[M].勘探开发研究院油藏评价研究室,2006.
[31]郑荣才,彭军,吴朝容.陆相盆地基准面旋回的级次划分和研究意义.沉积学报,2002,19(2):249~255
[32]张昌民,储层研究中的层次分析法[J],石油与天然气地质,1992,13(3):344~350
[2]Brown, A.R., 1999, Interpretation of Three-dimensional Seismic Data, Fifth Edition: AAPG Memoir 42, 514
[3]Nancye H Dawers and John R Underhill. The role of fault interaction and linkage in controlling synrift stratigraphic sequences: late Jurassic, Statfjord East area, Northern North Sea[J]. AAPG ,2000,84(1):45-64.
[4] Vail P.R.:Sequence stratigraphy workbook,fundamentals ofsequence stratigraPhy,In:AAPG Annual Convention Short Course.Hous-ton,Texas,1998.
[5]Van Wagoner J.C.et al.:Siliciclastic sequence stratigraphy in well logs , cores and outcrops:concepts for highresolution correlation of time and facies.AAPG , Methods in Exploration Series7,1990,55:l~240.
[6]Van Wagoner J C,Mitchum R M,campion K M and Rahmanion V D,Siliciclastic sequence stratigraphy in well ,cores and outcrops-concept for high-resolution correlation of times and facies.AAPG Methods in Exploration Series, 1990(7):P1-55.
[7]A.J.迪克斯著,冷鹏华等译,石油开发地质[M].石油工业出版社,1992
[8]陈守田,李忠权,于洪金,贝尔凹陷含油气系统划分及特征,成都理工大学学报(自然科学版),2004,31(4)364～368
[9]陈均亮等,海拉尔盆地构造演化及油气勘探前景,地质科学,2007,42(1):147～159
[10]崔全章,孙增久,海拉尔盆地贝尔凹陷断裂特征与油气富集规律,2005,40(增刊):82～88
[11]邓宏文,王洪亮,祝永军等,高分辨率层序地层学-原理及应用[M].地质出版社,2002
[12]戴启德,黄玉杰,石油开发地质学[M].石油大学出版社,2004
[13]樊太亮,朱琳,吉尔噶朗图凹陷沉积层序几何构型[J].石油与天然气地质,1998,19(2):99-105.
[14]樊太亮,李卫东,层序地层应用于陆相油藏预测的成功实例.石油学报,1999,20(2):12～17
[15]纪友亮,张世奇,陆相断陷湖盆层序地层学[M],北京:石油工业出版社,1996,1~70
[16]胡咏,于兴河,达江,高分辨率层序地层学在油藏描述中的运用,中国西部油气地质,2005, 1(2):198～203
[17]黄有泉,渠永宏,海拉尔盆地贝尔凹陷南屯组兴安岭群油组划分原则,大庆石油地质与开发,2006,25(5):21～26
[18]李丕龙,庞雄奇.隐蔽油气藏形成机理与勘探实践,见:第三届隐蔽油气藏国际学术研讨会论文集.北京:石油工业出版社,2004
[19]刘招君,程日辉,易海永.层序地层学的概念、进展与争论.世界地质,1994,13(3):56～68.
[20]马欣本,MT油田砂岩储层高分辨率层序地层分析,江汉石油学院学报,2002,24(3):36～40
[21]隋峰,海拉尔盆地贝尔凹陷地层划分的探讨,大庆石油地质与开发,2005,8(增刊):25-26
[22]吴志均,低渗砂岩气藏地质特征和开发对策探讨,钻采工艺,2004,27(4):103～106
[23]吴志均,何顺利,低渗砂岩气藏地质特征和开发对策探讨,钻采工艺,2004,27(4):103～107
[24]王振奇,张昌民,张尚锋,侯国伟,油气储层的层次划分和对比技术,石油与天然气地质,2002,23(1):70-75
[25]徐怀大等,地震地层学解释基础.北京:中国地质大学出版社1990
[26]徐怀大,赵政璋,樊太亮等.从地震地层学到层序地层学.石油工业出版社,1997
[27]尹太举等,层序地层学在油田开发中的应用实践.沉积学报,2005,23(4):664～671
[28]杨景强.沉积相测井分析灰色理论方法研究:[硕士学位论文].大庆石油学院:1999.
[29]叶泰然,郑荣才,文华国等,高分辨率层序地层学在鄂尔多斯盆地苏里格气田苏6井区下石盒子组砂岩储层预测中的应用,沉积学报,2006,24(2):259-261
[30]张荻楠等,海拉尔盆地乌尔逊-贝尔凹陷油藏地质特征及有效开发方法研究[M].勘探开发研究院油藏评价研究室,2006.
[31]郑荣才,彭军,吴朝容.陆相盆地基准面旋回的级次划分和研究意义.沉积学报,2002,19(2):249~255
[32]张昌民,储层研究中的层次分析法[J],石油与天然气地质,1992,13(3):344~350