松辽盆地青一段与北美鹰滩组致密油特征对比
|
摘要
松辽盆地和南德克萨斯地区均发育白垩系富含有机碳的暗色泥岩沉积。基于青山口组缺氧事件层与鹰滩组森诺曼期-土伦期界限缺氧事件层对比,证实了青山口组一段与鹰滩组下段在地质年代的一致性与沉积环境上的相似性。从岩性特征、有机地球化学特征、储集条件等方面,对比松辽盆地青山口组一段与南德克萨斯地区鹰滩组下段的致密油地质特征。结果显示:松辽盆地青山口组一段相对富集脆性矿物,有机碳含量在1.2%~6.6%,储层特低孔特低渗,发育纳米级孔隙,这些特征与南德克萨斯地区鹰滩组下段致密油地质特征相似。据此认为,松辽盆地青山口组一段具有较好的致密油勘探开发前景,在未来的致密油勘探开发中可以借鉴鹰滩致密油成功开发的经验。
There are organic-rich black shale of Cretaceous deposits in both Songliao Basin and South Texas.Based on the comparison of anoxic event record in the Qinshankou Formation and the Eagle Ford Formation near the Cenomanian-Turonian stage boundary,it is confirmed that the first member of Qingshankou Formation and the Lower Eagle Ford have consistence in the geological age and depositional environment. Therefore,three aspects of geological characteristics of tight oil are compared,including lithology,geochemistry and reservoir characteristics. The results show that the shale of the first member of Qingshankou Formation is rich in the brittle mineral,contains 1. 2%-6. 6% TOC with ultra-low porosity and permeability. These features are similar with the Lower Eagle Ford Formation. The comparative analysis indicates that the first member of Qingshankou Formation has potential tight oil exploration and can learn from the successful experience of Eagle Ford.
There are organic-rich black shale of Cretaceous deposits in both Songliao Basin and South Texas.Based on the comparison of anoxic event record in the Qinshankou Formation and the Eagle Ford Formation near the Cenomanian-Turonian stage boundary,it is confirmed that the first member of Qingshankou Formation and the Lower Eagle Ford have consistence in the geological age and depositional environment. Therefore,three aspects of geological characteristics of tight oil are compared,including lithology,geochemistry and reservoir characteristics. The results show that the shale of the first member of Qingshankou Formation is rich in the brittle mineral,contains 1. 2%-6. 6% TOC with ultra-low porosity and permeability. These features are similar with the Lower Eagle Ford Formation. The comparative analysis indicates that the first member of Qingshankou Formation has potential tight oil exploration and can learn from the successful experience of Eagle Ford.
引文
[1]Feng Z Q,Jia C Z,Xie X N,et al.Tectonostratigraphic units and stratigraphic sequences of the nonmarine Songliao basin,northeast China[J].Basin Research,2010,22:79-95.
[2]卓弘春,林春明,李艳丽,等.松辽盆地北部上白垩统青山口—姚家组沉积相及层序地层界面特征[J].沉积学报,2007,25(1):29-38.
[3]Hentz T F,Ruppel S C.Regional lithostratigraphy of the Eagle Ford Shale:Maverick Basin to East Texas Basin[J].Gulf Coast Association of Geological Societies Transactions,2010,60:325-337.
[4]Laubach S E,Jackson M L W.Origin of arches in the northwestern Gulf of Mexico basin[J].Geology,1990,18:595-598.
[5]Donovan A D,Staerker T S.Sequence stratigraphy of the Eagle Ford(Boquillas)Formation in the subsurface of South Texas and outcrops of West Texas[J].Gulf Coast Association of Geological Societies Transactions,2010,60:861-899.
[6]韩文学,查明,高长海.致密油成藏主控因素对比及意义——以鄂尔多斯盆地长7段与松辽盆地扶余油层为例[J].桂林理工大学学报,2014,34(4):629-634.
[7]高有峰,王璞珺,程日辉,等.松科1井南孔白垩系青山口组一段沉积序列精细描述:岩石地层、沉积相与旋回地层[J].地学前缘,2009,16(2):314-323.
[8]韩刚,张文婧,黄清华,等.松辽盆地晚白垩世青山口组缺氧事件层的地质地球化学特征[J].现代地质,2012,26(4):741-746.
[9]Eldrett J S,Ma C,Bergman S C,et al.Origin of limestone-marlstone cycles:astronomic forcing of organic-rich sedimentary rocks from the Cenomanian to early Coniacian of the Cretaceous Western Interior Seaway,USA[J].Earth and Planetary Science Letters,2015,423:98-113.
[10]王璞珺,杜小弟,王东坡.松辽盆地白垩纪湖侵沉积层序与湖海沟通事件的地球化学记录[J].岩相古地理,1995,15(4):14-20.
[11]Mullen J.Petrophysical characterization of the Eagle Ford shale in South Texas[R].Calgary:Canadian Unconventional Resources and International Petroleum Conference,SPE 138145,2010.
[12]Miceli Romero A A.Subsurface and outcrop organic geochemistry of the Eagle Ford shale(Cenomanian-Coniacian)in west,southwest,central,and east Texas[D].Oklahoma:University of Oklahoma,2014.
[13]Pommer M E.Quantitative assessment of pore types and pore size distribution across thermal maturity,Eagle Ford Formation,South Texas[D].Texas:University of Texas at Austin,2014.
[2]卓弘春,林春明,李艳丽,等.松辽盆地北部上白垩统青山口—姚家组沉积相及层序地层界面特征[J].沉积学报,2007,25(1):29-38.
[3]Hentz T F,Ruppel S C.Regional lithostratigraphy of the Eagle Ford Shale:Maverick Basin to East Texas Basin[J].Gulf Coast Association of Geological Societies Transactions,2010,60:325-337.
[4]Laubach S E,Jackson M L W.Origin of arches in the northwestern Gulf of Mexico basin[J].Geology,1990,18:595-598.
[5]Donovan A D,Staerker T S.Sequence stratigraphy of the Eagle Ford(Boquillas)Formation in the subsurface of South Texas and outcrops of West Texas[J].Gulf Coast Association of Geological Societies Transactions,2010,60:861-899.
[6]韩文学,查明,高长海.致密油成藏主控因素对比及意义——以鄂尔多斯盆地长7段与松辽盆地扶余油层为例[J].桂林理工大学学报,2014,34(4):629-634.
[7]高有峰,王璞珺,程日辉,等.松科1井南孔白垩系青山口组一段沉积序列精细描述:岩石地层、沉积相与旋回地层[J].地学前缘,2009,16(2):314-323.
[8]韩刚,张文婧,黄清华,等.松辽盆地晚白垩世青山口组缺氧事件层的地质地球化学特征[J].现代地质,2012,26(4):741-746.
[9]Eldrett J S,Ma C,Bergman S C,et al.Origin of limestone-marlstone cycles:astronomic forcing of organic-rich sedimentary rocks from the Cenomanian to early Coniacian of the Cretaceous Western Interior Seaway,USA[J].Earth and Planetary Science Letters,2015,423:98-113.
[10]王璞珺,杜小弟,王东坡.松辽盆地白垩纪湖侵沉积层序与湖海沟通事件的地球化学记录[J].岩相古地理,1995,15(4):14-20.
[11]Mullen J.Petrophysical characterization of the Eagle Ford shale in South Texas[R].Calgary:Canadian Unconventional Resources and International Petroleum Conference,SPE 138145,2010.
[12]Miceli Romero A A.Subsurface and outcrop organic geochemistry of the Eagle Ford shale(Cenomanian-Coniacian)in west,southwest,central,and east Texas[D].Oklahoma:University of Oklahoma,2014.
[13]Pommer M E.Quantitative assessment of pore types and pore size distribution across thermal maturity,Eagle Ford Formation,South Texas[D].Texas:University of Texas at Austin,2014.