方正断陷下第三系地化特征及油气运移方向研究
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摘要
本文采用石油地质学、构造地质学、沉积学等理论为指导,以地质、地化、物探、测井、录井、岩心等多种资料的综合研究为途径,深入研究了方正断陷下第三系烃源岩的地球化学特征、原油的地球化学特征以及油气运移方向。通过地化资料重点研究了方正断陷烃源岩的生烃特征,确定烃源岩的分布;在原油地化特征研究基础上,进行了油源对比,确定原油的来源;总结了油气运移研究的方法,并进行简单的油气运移方向及通道的推断;对油气聚集成藏的主要控制因素进行了分析,预测了油气有利勘探区域。
方正断陷下第三系烃源岩主要发育在新安村组+乌云组、达连河组、宝泉岭组,通过对其暗色泥岩进行分析,确定方正断陷烃源岩主要分布在新安村+乌云组,有机质丰度较好,主要干酪根类型为II2-III型,达到成熟,北部凹陷的柞树岗次凹、大林子次凹和得善屯次凹均为烃源岩发育的主要部位。通过对已出油的方4井、方6井、方10井原油的饱和烃气相色谱及生物标志化合物分析对比,原油具有煤成油的特点,方4井、方6井原油来自同一油源,推断烃源岩为柞树岗次凹深部的新安村+乌云组暗色泥岩。在运移方向上的研究,采用原油地化指标与地质构造相结合来进行推断,断裂可能为运移的主要通道。
通过对该区的成藏条件整体研究,综合分析后认为柞树岗次凹中南部、大林子次凹北部为最有利的勘探区带(Ⅰ类),中部凸起东部、得善屯次凹、柞树岗次凹北部、中部凸起西部、大林子次凹南部为较有利的勘探区带(Ⅱ类)。
Based on the theories of petroleum geology, structural geology and sedimentology, the thesis researches thoroughly geochemical characteristics of hydrocarbon source rock, crude oil and petroleum migration, combining with various of data about geology, geochemistry, geophysical prospecting, logging, well logging and core. Through the data of geochemistry focuses on Fangzheng fault depression hydrocarbon source rocks characteristics to determine the distribution of the source rocks. On the basis of characteristics of geochemical characteristics of crude oil carries through oil-source correlation and inferred the source of crude oil. Furthermore, the thesis concludes hydrocarbon migration direction and channels simply. In the end, the thesis analyzes the main controlling factors of hydrocarbon accumulation and predicted the favorable exploration region.
In the vertical,source rocks develops Xin’an cun and Wuyun Groups, Da Lianhe Group and Bao Quanling Group of Palegogene in Fangzheng fault depression mainly. By analyzing dark mudstone to determine source rock of Fang Zheng fault depression are mainly distributed in Xin’an cun and Wuyun groups. The hydrocarbon source rocks reaches high organic abundance and maturity ,while the kerogen types II2-Ⅲmainly. In the plane, hydrocarbon source rocks locate Oaktree hillrock sub-sag, Da lianhe sub-sag and De Shantun sub-sag of north depression. As comparing with saturated hydrocarbon gas chromatography and biomarker’s characteristics of oil from Fang 4, Fang 6, Fang10 analyses oil from the same source of Xin’an cun and Wuyun Groups. Besides, crude oil has the characteristics of coal-formed oil. On the migration combining with oil geochemical indexes and geological structure concludes that faults maybe the main channel migration.
Through the comprehensive research of reservoir forming conditions speculates the most favorable prospecting areas are middle-south of Oak tree hillrock sub-sag and the north of Da Linzi sub-sag. In addition, the east of Central Salient, De Shantun sub-sag, the north Oak tree hillrock sub-sag, the west of Central Salient and the south of Da Linzi sub-sag are more favorable prospecting areas.
方正断陷下第三系烃源岩主要发育在新安村组+乌云组、达连河组、宝泉岭组,通过对其暗色泥岩进行分析,确定方正断陷烃源岩主要分布在新安村+乌云组,有机质丰度较好,主要干酪根类型为II2-III型,达到成熟,北部凹陷的柞树岗次凹、大林子次凹和得善屯次凹均为烃源岩发育的主要部位。通过对已出油的方4井、方6井、方10井原油的饱和烃气相色谱及生物标志化合物分析对比,原油具有煤成油的特点,方4井、方6井原油来自同一油源,推断烃源岩为柞树岗次凹深部的新安村+乌云组暗色泥岩。在运移方向上的研究,采用原油地化指标与地质构造相结合来进行推断,断裂可能为运移的主要通道。
通过对该区的成藏条件整体研究,综合分析后认为柞树岗次凹中南部、大林子次凹北部为最有利的勘探区带(Ⅰ类),中部凸起东部、得善屯次凹、柞树岗次凹北部、中部凸起西部、大林子次凹南部为较有利的勘探区带(Ⅱ类)。
Based on the theories of petroleum geology, structural geology and sedimentology, the thesis researches thoroughly geochemical characteristics of hydrocarbon source rock, crude oil and petroleum migration, combining with various of data about geology, geochemistry, geophysical prospecting, logging, well logging and core. Through the data of geochemistry focuses on Fangzheng fault depression hydrocarbon source rocks characteristics to determine the distribution of the source rocks. On the basis of characteristics of geochemical characteristics of crude oil carries through oil-source correlation and inferred the source of crude oil. Furthermore, the thesis concludes hydrocarbon migration direction and channels simply. In the end, the thesis analyzes the main controlling factors of hydrocarbon accumulation and predicted the favorable exploration region.
In the vertical,source rocks develops Xin’an cun and Wuyun Groups, Da Lianhe Group and Bao Quanling Group of Palegogene in Fangzheng fault depression mainly. By analyzing dark mudstone to determine source rock of Fang Zheng fault depression are mainly distributed in Xin’an cun and Wuyun groups. The hydrocarbon source rocks reaches high organic abundance and maturity ,while the kerogen types II2-Ⅲmainly. In the plane, hydrocarbon source rocks locate Oaktree hillrock sub-sag, Da lianhe sub-sag and De Shantun sub-sag of north depression. As comparing with saturated hydrocarbon gas chromatography and biomarker’s characteristics of oil from Fang 4, Fang 6, Fang10 analyses oil from the same source of Xin’an cun and Wuyun Groups. Besides, crude oil has the characteristics of coal-formed oil. On the migration combining with oil geochemical indexes and geological structure concludes that faults maybe the main channel migration.
Through the comprehensive research of reservoir forming conditions speculates the most favorable prospecting areas are middle-south of Oak tree hillrock sub-sag and the north of Da Linzi sub-sag. In addition, the east of Central Salient, De Shantun sub-sag, the north Oak tree hillrock sub-sag, the west of Central Salient and the south of Da Linzi sub-sag are more favorable prospecting areas.
引文
[1]董秀超.方正断陷白垩系-古近系储层特征研究[D].大庆:大庆石油学院,2009.
[2]黄清华,孔惠,金玉东.依兰_伊通地堑方正断陷孢粉组合及其地层层序[J].微体古生物学报,2003,193~198.
[3]陈守田等.依-舒地堑下第三系层序地层分析[J].石油与天然气地质,150～153.
[4]高君,李晶.方正断陷的形成及其动力学机制[J].大庆石油地质与开发,1997,17~20.
[5]王孔伟,张帆,刘志宏,张兴洲.依舒地堑汤原_方正断陷古近纪边界断裂活动特征[J].大地构造与成矿学,2006,445~454.
[6]曹成润,王子文,张树林.佳_伊地堑方正断陷的断裂控盆效应[J].大庆石油学院学报,1996,1~5.
[7]夏义平,刘万辉,徐礼贵,郑良合.走滑断层的识别标志及其石油地质意义[J].中国石油勘探,2007,18～23.
[8]刘新颖.海拉尔盆地乌尔逊凹陷油气生成、运移及成藏[D].大庆:大庆石油学院,2006.
[9]徐伟民.石油地球化学在油气勘探中的应用[M] .北京:石油大学出版社,1993.
[10]陈俊.川西坳陷中段烃源岩及天然气地球化学研究[D].成都:成功理工大学,2008.
[11]秦建中.中国烃源岩[M].北京:科学出版社,2005.
[12]贾存善.塔里木盆地台盆区烃源岩有机地球化学特征研究[D].北京:中国地质大学,2006.
[13]张相春,王振平等.汤原断陷生物标志化合物的分布及其地球化学意义[J].大庆石油地质与开发,2007,23~26.
[14]韩霞,田世澄,张占文.高蜡油成因及其形成聚集的地球化学效应[J].地质科技情报,2007,74～78.
[15]杨永才,张枝焕.高蜡凝析油或轻质油的分布特征与成因机理[J].地质科技情报,2005,65～68.
[16]Alexander A C.T ectonic model for the evolution of the grearter Caspian area[J].A A P G Bulletion,1998,83(8).
[17]Volozh Y,Talbot C,Ismail-Zadeh A T.Salt st-ructures and hydrocarbons in the Pricaspian basin[J].A A P G Bulletion,2003,87(3):313-334.
[18]杨子成,张金亮.东营凹陷南斜坡原油生物标志物特征和油源对比[J].中国海洋大学学报,2008,453～460.
[19]杨斌,马孝祥等.南鄱阳坳陷乐探1井原油树皮煤成油的地球化学特征[J].海相油气地质,2005,31~35.
[20]王雪,迟宏一.松辽及外围盆地煤成油的有机地球化学特征[J].大庆石油地质与开发,2001,3~4.
[21]黄第藩等.煤成油的形成和成烃机理[M].北京石油工业出版社,1995.
[22]张本仁,傅家谟.地球化学进展[M].北京化学工业出版社,2005.
[23]霍秋立,汪振英.海拉尔盆地贝尔凹陷油源及油气运移研究[J] .吉林大学学报,2006,377~383.
[24]王玉华.柴达木盆地北缘地区油气运聚与保存条件研究[D].大庆:大庆石油学院,2002.
[25]Tissot B,Welte DH.Petroleum Formation and Occurrenc[M].Berlin:Springer-Verlag,1984.
[26]吴楠,刘显凤,徐涛.油气运移路径示踪研究[J] .特种油气藏,2007,28~31.
[27] Peters,K.E.andMoldowna,J.M.,1993,The Biomarker Guide: nIteprerting Moleeuler Fossilsin Pertoleum and Aneient Sediments. PrentieeHall,Ine.
[28]金之钧,张发强.油气运移研究现状及主要进展[J].石油与天然气地质,2005,263～268.
[29]黄福堂,冯子辉.储层有机地球化学及油气运移特征[J].大庆石油地质与开发,1998,4～7.
[30]陈宪保等.伊舒地堑方正断陷新安村组沉积微相研究[J].上海地质,2008,41～44.
[31]罗群.汤原断陷裂特征与油气成藏的关系[J].新疆石油地质,1999,90~98.
[32]孙永河,漆家福.渤中坳陷断裂构造特征及其对油气的控制[J].石油学报,2008,670～675.
[33]吕延防等.方正断陷构造发育史及断层封闭性研究.1998,内部研究报告,大庆油田有限责任公司勘探分公司.
[34]张兴全,安玉玲.天然地震与构造裂缝、油气运移的关系研究[J].石油勘探与开发,2000,106~108.
[35]王孔伟等.方正断陷油气地质条件及油气资源潜力预测.1997,内部研究报告,大庆油田有限责任公司勘探分公司.
[2]黄清华,孔惠,金玉东.依兰_伊通地堑方正断陷孢粉组合及其地层层序[J].微体古生物学报,2003,193~198.
[3]陈守田等.依-舒地堑下第三系层序地层分析[J].石油与天然气地质,150～153.
[4]高君,李晶.方正断陷的形成及其动力学机制[J].大庆石油地质与开发,1997,17~20.
[5]王孔伟,张帆,刘志宏,张兴洲.依舒地堑汤原_方正断陷古近纪边界断裂活动特征[J].大地构造与成矿学,2006,445~454.
[6]曹成润,王子文,张树林.佳_伊地堑方正断陷的断裂控盆效应[J].大庆石油学院学报,1996,1~5.
[7]夏义平,刘万辉,徐礼贵,郑良合.走滑断层的识别标志及其石油地质意义[J].中国石油勘探,2007,18～23.
[8]刘新颖.海拉尔盆地乌尔逊凹陷油气生成、运移及成藏[D].大庆:大庆石油学院,2006.
[9]徐伟民.石油地球化学在油气勘探中的应用[M] .北京:石油大学出版社,1993.
[10]陈俊.川西坳陷中段烃源岩及天然气地球化学研究[D].成都:成功理工大学,2008.
[11]秦建中.中国烃源岩[M].北京:科学出版社,2005.
[12]贾存善.塔里木盆地台盆区烃源岩有机地球化学特征研究[D].北京:中国地质大学,2006.
[13]张相春,王振平等.汤原断陷生物标志化合物的分布及其地球化学意义[J].大庆石油地质与开发,2007,23~26.
[14]韩霞,田世澄,张占文.高蜡油成因及其形成聚集的地球化学效应[J].地质科技情报,2007,74～78.
[15]杨永才,张枝焕.高蜡凝析油或轻质油的分布特征与成因机理[J].地质科技情报,2005,65～68.
[16]Alexander A C.T ectonic model for the evolution of the grearter Caspian area[J].A A P G Bulletion,1998,83(8).
[17]Volozh Y,Talbot C,Ismail-Zadeh A T.Salt st-ructures and hydrocarbons in the Pricaspian basin[J].A A P G Bulletion,2003,87(3):313-334.
[18]杨子成,张金亮.东营凹陷南斜坡原油生物标志物特征和油源对比[J].中国海洋大学学报,2008,453～460.
[19]杨斌,马孝祥等.南鄱阳坳陷乐探1井原油树皮煤成油的地球化学特征[J].海相油气地质,2005,31~35.
[20]王雪,迟宏一.松辽及外围盆地煤成油的有机地球化学特征[J].大庆石油地质与开发,2001,3~4.
[21]黄第藩等.煤成油的形成和成烃机理[M].北京石油工业出版社,1995.
[22]张本仁,傅家谟.地球化学进展[M].北京化学工业出版社,2005.
[23]霍秋立,汪振英.海拉尔盆地贝尔凹陷油源及油气运移研究[J] .吉林大学学报,2006,377~383.
[24]王玉华.柴达木盆地北缘地区油气运聚与保存条件研究[D].大庆:大庆石油学院,2002.
[25]Tissot B,Welte DH.Petroleum Formation and Occurrenc[M].Berlin:Springer-Verlag,1984.
[26]吴楠,刘显凤,徐涛.油气运移路径示踪研究[J] .特种油气藏,2007,28~31.
[27] Peters,K.E.andMoldowna,J.M.,1993,The Biomarker Guide: nIteprerting Moleeuler Fossilsin Pertoleum and Aneient Sediments. PrentieeHall,Ine.
[28]金之钧,张发强.油气运移研究现状及主要进展[J].石油与天然气地质,2005,263～268.
[29]黄福堂,冯子辉.储层有机地球化学及油气运移特征[J].大庆石油地质与开发,1998,4～7.
[30]陈宪保等.伊舒地堑方正断陷新安村组沉积微相研究[J].上海地质,2008,41～44.
[31]罗群.汤原断陷裂特征与油气成藏的关系[J].新疆石油地质,1999,90~98.
[32]孙永河,漆家福.渤中坳陷断裂构造特征及其对油气的控制[J].石油学报,2008,670～675.
[33]吕延防等.方正断陷构造发育史及断层封闭性研究.1998,内部研究报告,大庆油田有限责任公司勘探分公司.
[34]张兴全,安玉玲.天然地震与构造裂缝、油气运移的关系研究[J].石油勘探与开发,2000,106~108.
[35]王孔伟等.方正断陷油气地质条件及油气资源潜力预测.1997,内部研究报告,大庆油田有限责任公司勘探分公司.