松辽盆地三肇凹陷东部葡萄花油层高分辨率层序地层模式探讨
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摘要
针对三肇凹陷东部葡萄花油层地层对比和划分中存在的不统一现象,依据8口井岩心和1700口井测井资料及地震资料,应用高分辨率层序地层学理论对三肇凹陷东部葡萄花油层进行层序地层学研究,将三肇凹陷东部葡萄花油层划分为2个中期基准面旋回和9个短期基准面旋回;葡萄花油层的地层发育模式为向南地层厚度减薄,葡萄花油层顶上移、底下移,各层渐薄,而非中部缺失或底部缺失的层序地层新格架。中期基准面旋回的转换点位于SSC4中部,转换点以下为下降半旋回,转换点以上为上升半旋回的地层发育模式,并建立了研究区与三肇凹陷统一的高分辨率层序地层格架。该地层格架的建立为后期油藏开发提供可靠地质依据。
The Putaohua Reservoir in the east region of Sanzhao Depression is connected to the oil and gas resources in Songliao Basin.Due to the inconsistency about stratigraphic correlation and classification of Putaohua oil layer in the east region of Sanzhao Depression,the precise high frequency sequence identification and classification of the reservoir are needed.And a union stratigraphic framework is established.Based on eight well cores and logging and seismic data of 1700 wells,according to the theory of high-resolution sequence stratigraphy sedimentary,the Putaohua oil layer in the east region of Sanzhao Depression is studied.The interface and characteristics of each grade base level cycle in the east region of Sanzhao Depression,Songliao Basin is systematically analyzed.The oil layer is divided into two medium-term base level cycles and nine short-term base level cycles.On the basis of the analysis on the structural type of short term base level cycles sequence,the development pattern of the Putaohua oil layer in the above area is explored.The stratigraphic model is that the thickness of the formation becomes thin toward the south.The top of the Putaohua oil layer moves up,the bottom of that moves down,and each layer is gradually thinning.It is opposed to the new framework of sequences with the absence of central layer or the bottom.The formation development pattern is that the transition point of the medium-term base level cycle is located at the center of SSC 4.There is a decreased half-cycle below the transition point,and an increased half-cycle above the transition point.In addition,a high resolution sequence stratigraphic framework is established.The framework unifies the study area with the Sanzhao depression,providing the solid geological basis for the sandstone distribution,establishment of distribution pattern of reservoir,the cause identification of mainly monosandbody,and potential oil field further tapping.
The Putaohua Reservoir in the east region of Sanzhao Depression is connected to the oil and gas resources in Songliao Basin.Due to the inconsistency about stratigraphic correlation and classification of Putaohua oil layer in the east region of Sanzhao Depression,the precise high frequency sequence identification and classification of the reservoir are needed.And a union stratigraphic framework is established.Based on eight well cores and logging and seismic data of 1700 wells,according to the theory of high-resolution sequence stratigraphy sedimentary,the Putaohua oil layer in the east region of Sanzhao Depression is studied.The interface and characteristics of each grade base level cycle in the east region of Sanzhao Depression,Songliao Basin is systematically analyzed.The oil layer is divided into two medium-term base level cycles and nine short-term base level cycles.On the basis of the analysis on the structural type of short term base level cycles sequence,the development pattern of the Putaohua oil layer in the above area is explored.The stratigraphic model is that the thickness of the formation becomes thin toward the south.The top of the Putaohua oil layer moves up,the bottom of that moves down,and each layer is gradually thinning.It is opposed to the new framework of sequences with the absence of central layer or the bottom.The formation development pattern is that the transition point of the medium-term base level cycle is located at the center of SSC 4.There is a decreased half-cycle below the transition point,and an increased half-cycle above the transition point.In addition,a high resolution sequence stratigraphic framework is established.The framework unifies the study area with the Sanzhao depression,providing the solid geological basis for the sandstone distribution,establishment of distribution pattern of reservoir,the cause identification of mainly monosandbody,and potential oil field further tapping.
引文
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[13]Al-Mansoori A,Strohmenger C J,Ghani A A,et al.High-resolution se-quence-stratigraphic correlation and facies characterization of upper Thamama(Lower Cretaceous)reservoir units and non-reservoir zones,Abu Dhabi,United Arab Emirates[C]//Abu Dhabi International Petroleum Exhibition and Conference,2008.
[2]魏魁生,徐怀大,叶淑芬,等.松辽盆地白垩系高分辨率层序地层格架[J].石油与天然气地质,1997,18(1):7-14.Wei Kuisheng,Xu Huaida,Ye Shufen,et al.Oil&GasGeology,1997,18(1):7-14.
[3]王璞珺,杜小弟,王俊,等.松辽盆地白垩纪年代地层研究及地层时代划分[J].地质学报,1995,69(4):372-381.Wang Pujun,Du Xiaodi,Wang Jun,et al.Acta Geologica Sinica,1995,69(4):372-381.
[4]梁江平,辛仁臣,王书恒,等.松辽盆地中部含油组层序地层格架及介形类特征的响应[J].地层学杂志,2005,29(4):405-409.Liang Jiangping,Xin Renchen,Wang Shuheng,et al.Journal of Stratig-raphy,2005,29(4):405-409.
[5]解习农,程守田,陆永潮.陆相盆地幕式构造旋回与层序构成[J].地球科学,1996,21(1):28-33.Xie Xinong,Cheng Shoutian,Lu Yongchao.Earth Science,1996,21(1):28-33.
[6]郭巍,刘招君,董惠民,等.松辽盆地层序地层特征及油气聚集规律[J].吉林大学学报:地球科学版,2004,34(2):216-221.Guo Wei,Liu Zhaojun,Dong Huimin,et al.Journal of Jilin University:Earth Science Edition,2004,34(2):216-221.
[7]朱建伟,刘招君,董清水,等.松辽盆地层序地层格架及油气聚集规律[J].石油地球物理勘探,2001,36(3):339-344.Zhu JianweI,Liu Zhaojun,Dong Qingshui,et al.Oil Geophysical Prospecting,2001,36(3):339-344.
[8]孙钰,钟建华,姜在兴,等.松辽盆地南部坳陷期层序地层研究[J].中国石油大学学报:自然科学版,2006,30(5):1-7.Sun Yu,Zhong Jianhua,Jiang Zaixing,et al.Joural of China University of Petroleum:Edition of Natural Science,2006,30(5):1-7.
[9]刘媛,朱筱敏,袁红旗,等.三肇凹陷白垩系姚一段葡萄花油层浅水三角洲高分辨率层序地层新认识[J].中国石油大学学报:自然科学版,2010,34(4):7-18.Liu Yuan,Zhu Xiaomin,Yuan Hongqi,et al.Joural of China University of Petroleum:Edition of Natural Science,2010,34(4):7-18.
[10]郑荣才,尹世民,彭军,等.基准面旋回结构与叠加样式的沉积动力学分析[J].沉积学报,2000,18(3):369-375.Zheng RongcaI,Yin Shimin,Peng Jun,et al.Acta Sedimentologica Sinica,2000,18(3):369-375.
[11]Coffey B P,Read J F.High-resolution sequence stratigraphy in Tertiary carbonate-rich sections by thin-sectioned well cut-tings[J].AAPG Bul-letin,2002,86(18):1407-1415.
[12]尹艳树,吴胜和,尹太举,等.濮城油田沙三中亚段高分辨率层序地层学[J].地层学杂志,2006,30(1):54-59.Yin Yanshu,Wu Shenghe,Yin Taiju,et al.Journal of Stratigraphy,2006,30(1):54-59.
[13]Al-Mansoori A,Strohmenger C J,Ghani A A,et al.High-resolution se-quence-stratigraphic correlation and facies characterization of upper Thamama(Lower Cretaceous)reservoir units and non-reservoir zones,Abu Dhabi,United Arab Emirates[C]//Abu Dhabi International Petroleum Exhibition and Conference,2008.
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