松辽盆地民东地区差异成藏及主控因素
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摘要
民东地区是吉林油田低渗油藏效益储量提交的重点区块,成藏条件、成藏过程和成藏特征认识不充分。以新民油田350口开发井、民东地区82口探井、评价井和长春岭气田30口探井资料为基础,根据成藏条件评价和成藏过程解剖,揭示民东地区的油气差异成藏特征和主控因素,并进行现场实践。结果表明:新民、民东和长春岭地区油气来源具有差异性,造成沿江一带差异成藏;研究区成藏经历"沿源断裂垂向倒灌—沿断砂输导体侧向长距离运移—沿断裂垂向运移—构造脊圈闭聚集"的过程。断裂控制油气的运聚、成藏及分布,圈闭条件不足是造成油气过路的主因,它们与供烃条件共同耦合,造成新民、民东、长春岭地区在含油气程度上的差异。复查T29、T24老井试油及3处剩余出油点,对完善民东地区及沿江一带的成藏规律具有指导意义。
Mingdong area is an important preparation block of tight oil reserves for Jilin oilfield,but a breakthrough has not been achieved ever,the main reason for that is no scientific and reasonable understanding of reservoir formation along the Songhua river.With the productivity and test data of 350 wells in Xinmin,70 wells in Mindong and 30 wells in Changchunling,combined with a large number of contiguous 3Dstructure interpretation,fault analysis and typical reservoir understanding,in-depth study on factors of reservoir rules has been studied,and the characteristics and causes of reservoir differences in this 3areas have been revealed to guide the production.Study shows that there are differences in oil and gas sources between Xinmin,Mindong and Changchunling,which is the basis for reservoir formation in the area.The accumulation of reservoirs in the study area is characterized by process that "vertical intrusion along source faults-distance migration-vertical migration along the fault-ridge trap closure structure".The faults control the migration,accumulation,distribution of oil and gas.The lack of traps is the main cause of oil crossing.Coupled with the hydrocarbon supply conditions,they result in the difference of oil and gas degree between Xinmin,Mindong and Changchunling.The T29,T24 and 3remaining oil points are reexamined,which is of great significance to perfect the reservoir forming rule along the Songhua river.
Mingdong area is an important preparation block of tight oil reserves for Jilin oilfield,but a breakthrough has not been achieved ever,the main reason for that is no scientific and reasonable understanding of reservoir formation along the Songhua river.With the productivity and test data of 350 wells in Xinmin,70 wells in Mindong and 30 wells in Changchunling,combined with a large number of contiguous 3Dstructure interpretation,fault analysis and typical reservoir understanding,in-depth study on factors of reservoir rules has been studied,and the characteristics and causes of reservoir differences in this 3areas have been revealed to guide the production.Study shows that there are differences in oil and gas sources between Xinmin,Mindong and Changchunling,which is the basis for reservoir formation in the area.The accumulation of reservoirs in the study area is characterized by process that "vertical intrusion along source faults-distance migration-vertical migration along the fault-ridge trap closure structure".The faults control the migration,accumulation,distribution of oil and gas.The lack of traps is the main cause of oil crossing.Coupled with the hydrocarbon supply conditions,they result in the difference of oil and gas degree between Xinmin,Mindong and Changchunling.The T29,T24 and 3remaining oil points are reexamined,which is of great significance to perfect the reservoir forming rule along the Songhua river.
引文
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[11]刘宗堡,杨铁军,龚勋,等.断块区岩性油藏剩余油分布特征及挖潜方法——以松辽盆地葡北油田葡萄花油层为例[J].东北石油大学学报,2013,37(4):32-38.Liu Zongbao,Yang Tiejun,Gong Xun,et al.Tapping potential method and characteristics of remaining oil distribution of lithologic reservoir in block area-as Putaohua reservoir of Pubei oilfield in Songliao basin[J].Journal of Northeast Petroleum University,2013,37(4):32-38.
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[15]孙同文,付广,王芳,等.源外隆起区输导脊对油气运聚成藏的控制作用——以大庆长垣杏北地区扶余油层为例[J].中南大学学报:自然科学版,2014,45(12):4308-4316.Sun Tongwen,Fu Guang,Wang Fang,et al.Control effect of transporting ridge in hydrocarbon accumulation in uplift area outside of source area:A case study of Fuyu oil layer in Xingbei region,Daqing anticline[J].Journal of Central South University:Science and Technology,2014,45(12):4308-4316.
[2]陈方文,卢双舫,刘海英,等.松辽盆地北部长春岭背斜带油气成藏探讨[J].地质论评,2011,57(3):379-386.Chen Fangwen,Lu Shuangfang,Liu Haiying,et al.A discuss on hydrocarbon accumulation in Changchunling anticline belt northern Songliao basin[J].Geological Review,2011,57(3):379-386.
[3]孙雨,陈晨,马世忠,等.松辽盆地扶新隆起带南部扶余油层油气运移机制与成藏模式研究[J].地质论评,2013,59(3):501-509.Sun Yu,Chen Chen,Ma Shizhong,et al.Hydrocarbon migration mechanism and accumulation models of the Fuyu oil layer in southern Fuxin uplift,Songliao basin[J].Geological Review,2013,59(3):501-509.
[4]付广,薛盼,孙同文,等.源外隆起区油气成藏与分布主控因素及模式——以松辽盆地杏北地区扶余油层为例[J].岩性油气藏,2013,25(5):13-17.Fu Guang,Xue Pan,Sun Tongwen,et al.Main controlling factors and models of oil and gas accumulation and distribution in uplift area outside source rock:An example from Fuyu oil layer in Xingbei area,Songliao basin[J].Lithologic Reservoirs,2013,25(5):13-17.
[5]王雅春,王胜男.源岩、超压和断裂空间匹配对三肇凹陷扶杨油层油成藏的控制作用[J].吉林大学学报:地球科学版,2009,39(4):656-661.Wang Yachun,Wang Shengnan.Controlling of the match of source rock,overpressure and fault on oil accumulation of Fuyang oil layer in Sanzhao depression[J].Journal of Jilin University:Earth Science Edition,2009,39(4):656-661.
[6]肖竣文,辛仁臣.松辽盆地北部西斜坡青二段至姚一段四级层序格架内沉积微相分布[J].东北石油大学学报,2016,40(5):75-85.Xiao Junwen,Xin Renchen.Sedimentary microfacies distribution under the 4th order sequence stratigraphic framework of the member2of Qingshankou formation to the member1of Yaojia formation in west slope of the northern part of Songliao basin[J].Journal of Northeast Petroleum University,2016,40(5):75-85.
[7]朱筱敏,刘媛,方庆,等.大型坳陷湖盆浅水三角洲形成条件和沉积模式:以松辽盆地三肇凹陷扶余油层为例[J].地学前缘,2012,19(1):90-99.Zhu Xiaomin,Liu Yuan,Fang Qing,et al.Formation and sedimentary model of shallow delta in large-scale lake.example from Cretaceous Quantou formation in Sanzhao sag,Songliao basin[J].Earth Science Frontiers,2012,19(1):89-99.
[8]仇恒远,鲍云杰,闫百泉,等.方正断陷断裂系统划分及其控藏模式[J].东北石油大学学报,2014,38(2):43-50.Qiu Hengyuan,Bao Yunjie,Yan Baiquan,et al.Division of fault systems and its controlling oil-gas accumulation models in Fangzheng depression[J].Journal of Northeast Petroleum University,2014,38(2):43-50.
[9]肖佃师,卢双舫,陈海峰,等.源外斜坡区断裂密集带对油气成藏的控制作用:以松辽盆地肇源南扶余油层为例[J].中南大学学报:自然科学版,2012,43(9):3548-3557.Xiao Dianshi,Lu Shuangfang,Chen Haifeng,et al.Control effect of fault condensed belts in hydrocarbon accumulation in slope area outside of source area:A case study of Fuyu oil layer in Zhaoyuannan region,Songliao basin[J].Journal of Central South University:Science and Technology,2012,43(9):3548-3557.
[10]张雷,卢双舫,张学娟,等.松辽盆地三肇地区扶杨油层油气成藏过程主控因素及成藏模式[J].吉林大学学报:地球科学版,2010,40(3):491-502.Zhang Lei,Lu Shuangfang,Zhang Xuejuan,et al.Controlling factors and accumulation model of hydrocarbon accumulation of the Fuyang oil units in Sanzhao region of the Songliao basin[J].Journal of Jilin University:Earth Science Edition,2010,40(3):491-502.
[11]刘宗堡,杨铁军,龚勋,等.断块区岩性油藏剩余油分布特征及挖潜方法——以松辽盆地葡北油田葡萄花油层为例[J].东北石油大学学报,2013,37(4):32-38.Liu Zongbao,Yang Tiejun,Gong Xun,et al.Tapping potential method and characteristics of remaining oil distribution of lithologic reservoir in block area-as Putaohua reservoir of Pubei oilfield in Songliao basin[J].Journal of Northeast Petroleum University,2013,37(4):32-38.
[12]罗群.断裂控烃理论的概念、原理、模式与意义[J].石油勘探与开发,2010,37(3):316-324.Luo Qun.Principle,model and significance of the fault controlling hydrocarbon theory[J].Petroleum Exploration and Development,2010,37(3):316-324.
[13]李丹,董春梅,林承焰,等.松辽盆地南部让字井斜坡带超压特征及其对源下油藏运聚模式的控制[J].天然气地球科学,2014,25(3):326-332.Li Dan,Dong Chunmei,Lin Chengyan,et al.Characteristic of overpressure and its control on migration and accumulation model for hydrocarbon reservoirs below source rocks in Rangzijing slope zone of southern Songliao basin[J].Natural Gas Geoscience,2014,25(3):326-332.
[14]葛岩,黄志龙,宋立忠,等.松辽盆地长春岭背斜带泉一段天然气成藏过程分析[J].中南大学学报:自然科学版,2013,44(12):4954-4961.Ge Yan,Huang Zhilong,Song Lizhong,et al.Reservoir formation process of the first member of Quantou formation in Changchunling anticline,Songliao basin[J].Journal of Central South University:Science and Technology,2013,44(12):4954-4961.
[15]孙同文,付广,王芳,等.源外隆起区输导脊对油气运聚成藏的控制作用——以大庆长垣杏北地区扶余油层为例[J].中南大学学报:自然科学版,2014,45(12):4308-4316.Sun Tongwen,Fu Guang,Wang Fang,et al.Control effect of transporting ridge in hydrocarbon accumulation in uplift area outside of source area:A case study of Fuyu oil layer in Xingbei region,Daqing anticline[J].Journal of Central South University:Science and Technology,2014,45(12):4308-4316.