乌尔逊凹陷乌南地区南屯组层序特征研究
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摘要
本文综合利用层序地层学、沉积学、构造地质学、石油地质学等理论和方法,运用地震、测井、录井、岩心等资料,对乌南地区南屯组地层的层序地层格架、沉积相进行了深入细致的分析和研究。同时,结合前人研究成果,利用上述研究成果对有利区储集相带进行预测。成果对今后该区油气勘探开发及井位部署具有实际的指导意义。
在认真借鉴和分析前人研究成果的基础上,通过井震结合,实现了钻井分层与地震界面的统一,建立了四级层序地层格架。将南屯组地层自下而上划分为两个三级层序,即层序SQN1和层序SQN2,且每个三级层序内部各个体系域均发育完全,两个三级层序的分界面位于岩性和电性的转换面,界面之下局部削截,界面之上为上超。层序SQN1内部自下而上划分为四个四级层序单元,即N1SQ1、N1SQ2、N1SQ3及N1SQ4。层序SQN2内部自下而上划分为三个四级层序单元,即N2SQ1、N2SQ2及N2SQ3,且每个四级层序内部各个体系域均发育完全。
通过对构造沉降、气候变化、沉积物供给和湖平面变化等层序控制因素的分析,阐明了各种控制因素对层序发育的影响作用。研究认为,构造沉降是控制断陷期层序地层发育的主要因素。
综合露头、地震、钻-测井等资料,明确了南屯组沉积相、沉积模式和沉积体系展布特征。南屯组发育的沉积相类型主要有:辫状河三角洲相、扇三角洲相、湖泊相及湖底扇相。
综合以上研究成果,指出研究区内的有利储集相带,预测工区内有利勘探目标。
Based on the theories and methods of the sequence stratigraphy, sedimentology, structural geology, petroleum geology, as well as the analytical data of seismic, well logging, core, the author analyses and studies the sequence stratigraphic framework and precipitation facies of the NanTun formation in the southern area carefully and deeply. At the same time, combines with the research results of previous studies and the initial work above, the author carries on the forecast about the reservoir facies. The results have actual guiding significances on the future hydrocarbon exploration and development as well as the allocation of the well location in the area.
On the basis of analysing and drawing on the experience of the results of previous studies carefully, we success on the unification of the drilling stratification and the seismic interface, and establish the sequence stratigraphic framework combining the well logging with seismic. At last, we divide the NanTun formation into two third-order sequences from bottom to top, as SQN1and SQN2. All system tracts are fully developed in each third-order sequence. The interface of the two third-order sequence is located at the conversion surface of the lithology and electrical. The interface presents the character of partly truncation below, and it presents the character of onlap above. Finally we divided SQN1 into four fouth-order sequences from bottom to top, as N1SQ1, N1SQ2, N1SQ3 and N1SQ4. We also divide SQN2 into three fouth-order sequences from bottom to top, as N2SQ1, N2SQ2 and N2SQ3. All system tracts are fully developed in each four-order sequence.
Through ananlyse the controlling factors on the sequence such as structure subsidence, climatic change, sediment supply and lake level changes in the research area, we interprete the effects of various controlling factors on the sequence development. The finding suggested that structure subsidence was the main factor on controlling the layer sequence development of the faulted period.
Combining with the data of crop, seismic, well drilling and logging, the characters of precipitation facies, depositional model and depositional systems distribution of the NanTun formation are defined. The main precipitation facies in the NanTun formation are Fan-delta, braided fluvial delta , lacustrine and Lake Floor fan .
Finally, considering of the research above, we point out the favorable reservoir facies.
在认真借鉴和分析前人研究成果的基础上,通过井震结合,实现了钻井分层与地震界面的统一,建立了四级层序地层格架。将南屯组地层自下而上划分为两个三级层序,即层序SQN1和层序SQN2,且每个三级层序内部各个体系域均发育完全,两个三级层序的分界面位于岩性和电性的转换面,界面之下局部削截,界面之上为上超。层序SQN1内部自下而上划分为四个四级层序单元,即N1SQ1、N1SQ2、N1SQ3及N1SQ4。层序SQN2内部自下而上划分为三个四级层序单元,即N2SQ1、N2SQ2及N2SQ3,且每个四级层序内部各个体系域均发育完全。
通过对构造沉降、气候变化、沉积物供给和湖平面变化等层序控制因素的分析,阐明了各种控制因素对层序发育的影响作用。研究认为,构造沉降是控制断陷期层序地层发育的主要因素。
综合露头、地震、钻-测井等资料,明确了南屯组沉积相、沉积模式和沉积体系展布特征。南屯组发育的沉积相类型主要有:辫状河三角洲相、扇三角洲相、湖泊相及湖底扇相。
综合以上研究成果,指出研究区内的有利储集相带,预测工区内有利勘探目标。
Based on the theories and methods of the sequence stratigraphy, sedimentology, structural geology, petroleum geology, as well as the analytical data of seismic, well logging, core, the author analyses and studies the sequence stratigraphic framework and precipitation facies of the NanTun formation in the southern area carefully and deeply. At the same time, combines with the research results of previous studies and the initial work above, the author carries on the forecast about the reservoir facies. The results have actual guiding significances on the future hydrocarbon exploration and development as well as the allocation of the well location in the area.
On the basis of analysing and drawing on the experience of the results of previous studies carefully, we success on the unification of the drilling stratification and the seismic interface, and establish the sequence stratigraphic framework combining the well logging with seismic. At last, we divide the NanTun formation into two third-order sequences from bottom to top, as SQN1and SQN2. All system tracts are fully developed in each third-order sequence. The interface of the two third-order sequence is located at the conversion surface of the lithology and electrical. The interface presents the character of partly truncation below, and it presents the character of onlap above. Finally we divided SQN1 into four fouth-order sequences from bottom to top, as N1SQ1, N1SQ2, N1SQ3 and N1SQ4. We also divide SQN2 into three fouth-order sequences from bottom to top, as N2SQ1, N2SQ2 and N2SQ3. All system tracts are fully developed in each four-order sequence.
Through ananlyse the controlling factors on the sequence such as structure subsidence, climatic change, sediment supply and lake level changes in the research area, we interprete the effects of various controlling factors on the sequence development. The finding suggested that structure subsidence was the main factor on controlling the layer sequence development of the faulted period.
Combining with the data of crop, seismic, well drilling and logging, the characters of precipitation facies, depositional model and depositional systems distribution of the NanTun formation are defined. The main precipitation facies in the NanTun formation are Fan-delta, braided fluvial delta , lacustrine and Lake Floor fan .
Finally, considering of the research above, we point out the favorable reservoir facies.
引文
[1]郭了萍,李登伟.我国层序地层学研究的发展趋势[J].河南石油,2005,19(6):1~5.
[2]徐强,姜烨,董伟良等.中国层序地层研究现状和发展方向[J].石油学报,2003,21(1):155~167.
[3]杨小萍,刘桂侠,马文杰.层序地层学研究现状及发展趋势[J].西北地质,2001,34(2):50~55.
[4]邓宏文.美国层序地层研究中的新学派—高分辨率层序地层学[J].石油天然气地质,1995,12(6):90~96.
[5]T A Cross.据高分辨率层序地层学认识地层结构、对比概念、体积分配、想分异和储层的间隔单元划分[J].杜宁平译国外石油勘探,1996,8(3):285~294.
[6]刘招君,董清水,王嗣敏.陆相层序地层学导论与应用[M].北京:石油工业出版社,2002,138~143.
[7]纪友亮等.层序地层学原理及层序成因机制模式[M].北京:地质出版社,1997.
[8]钱奕忠等.层序地层学理论和研究方法[M].成都:四川科学技术出版社,1994.
[9]C. K.威尔格斯等(美国)编,徐怀大,魏魁生,洪卫东等译.层序地层学原理(海平面变化综合分析)[M].北京:石油工业出版社,1993.
[10]张远东.层序地层学研究现状及发展趋势[J].世界石油工业,2000,7(10):14~17.
[11]廖远涛.层序地层学的研究现状及发展方向[J].重庆石油高等专科学校学报,2002,4(2):9~12.
[12]侯明才,陈洪德,田景春.层序地层学的研究进展[J].矿物岩石,2001,21(3):128~134.
[13]聂逢君.层序地层学的起源及其发展[J].铀矿地质,2001,17(6) :193~202.
[14]王华,肖军等.露头层序地层学研究方法综述[J].地质科技情报,2002,21(4):15~22.
[15]孟万斌.从层序地层学到高分辨率层序地层学[J].成都理工学院学报,2002,29(4) :380~385.
[16]池秋鄂,龚福华.层序地层学基础与应用[M].北京:石油工业出版社,2001.
[17]聂逢君.层序地层学的起源及其发展[J].铀矿地质,2001,17(6):193~202.
[18]薛良清.层序地层学研究现状、方法与前景[J].石油勘探与开发,1995,22(5):8~13.
[19]薛良清.成因层序地层学的回顾与展望[J].沉积学报,2000,18(3):484~488.
[20]贾振远,蔡忠贤.成岩地层学与层序地层学[J].地球科学—中国地质大学学报,1997,22(5):538~543.
[21]郭东晓,罗啸泉.层序地层学研究在国内的进展[J].四川地质学报,1997,17(2):92~95.
[22]池秋鄂,龚福华.层序地层学基础与应用[M].北京:石油工业出版社,2001.
[23]纪友亮.层序地层学原理及层序成因机制模式[M].北京:地质出版社,1997
[24]蔡希源,李思田等.陆相盆地高精度层序地层学—隐蔽油气藏勘探基础、方法与实践(基础理论篇).北京:地质出版社,2004,17~30.
[25]陈文学.层序地层学与隐蔽圈闭预测[M].北京:石油工业出版社,2001.
[26]吴金才,张玉明等.层序地层学勘探实践[M].武汉:中国地质大学出版社,2001.
[27]W.Schlager. Depositioml bias and environmental change-important factors in sequence stratigraphy. Sedimentary Geology, 1991, 70(2/4):109~130.
[28] T.A.Cross. Stratigraphic controls on reservoir attributes in continental strata[J].地学前缘(中国地质大学,北京), 2000, 7(4):322~332.
[29] Q.R.Passey et al. A practical model for organic richness from porosity resistity logs[J].AAPG Bulletin, 1990,77(3):1777~1794.
[30]徐怀大,王世凤等.地震地层学解释基础[M].北京:中国地质大学出版社,
[31]刘振峰.地震资料在层序地层学中的应用进展[J].地球物理学进展,2003,3(1):24~28.
[32]陆基孟.地震勘探原理及资料解释[M].北京:石油工业出版社,1991.
[33]李丕龙等,陆相断陷盆地油气地质与勘探[M].北京:石油工业出版社,地质出版社,2003.
[34]徐怀大,魏魁生,洪卫东译.层序地层学原理[M].北京:石油工业出版社,1993.49~254
[35]李思田,林畅松.大型陆相盆地层序地层学研究[J].地学前缘,1995,2(3-4):133~136
[36]杨玉峰,陈树民.乌尔逊凹陷北部下白垩统层序地层发育特征[J].沉积学报,1999,17(3):422~429
[37]马中振,庞雄奇,魏建设,李明刚.海拉尔盆地乌尔逊凹陷石油地质特征[J].新疆石油地质,2007,28(3):422~429
[38]曹广华,胡亚华,张奇文,等.利用测井资料识别沉积微相方法研究[J].科学技术与工程,2004,7(15):214~215.
[39]董福湘,赵冰仪,王志华,刘立.松南十屋断陷扇三角洲和辫状河三角洲沉积体系特征[J].长春工程学院学报,2009,10(2):49~52.
[40]李寅.滦平盆地西瓜园组扇三角洲沉积体系构成及其特征[J].地球学报,2003,24(4) :353~356.
[41]林承焰,高国强.梁家楼油田湖底扇沉积体系划分对比[J].断块油气田,2007,14(1) :19~49.
[2]徐强,姜烨,董伟良等.中国层序地层研究现状和发展方向[J].石油学报,2003,21(1):155~167.
[3]杨小萍,刘桂侠,马文杰.层序地层学研究现状及发展趋势[J].西北地质,2001,34(2):50~55.
[4]邓宏文.美国层序地层研究中的新学派—高分辨率层序地层学[J].石油天然气地质,1995,12(6):90~96.
[5]T A Cross.据高分辨率层序地层学认识地层结构、对比概念、体积分配、想分异和储层的间隔单元划分[J].杜宁平译国外石油勘探,1996,8(3):285~294.
[6]刘招君,董清水,王嗣敏.陆相层序地层学导论与应用[M].北京:石油工业出版社,2002,138~143.
[7]纪友亮等.层序地层学原理及层序成因机制模式[M].北京:地质出版社,1997.
[8]钱奕忠等.层序地层学理论和研究方法[M].成都:四川科学技术出版社,1994.
[9]C. K.威尔格斯等(美国)编,徐怀大,魏魁生,洪卫东等译.层序地层学原理(海平面变化综合分析)[M].北京:石油工业出版社,1993.
[10]张远东.层序地层学研究现状及发展趋势[J].世界石油工业,2000,7(10):14~17.
[11]廖远涛.层序地层学的研究现状及发展方向[J].重庆石油高等专科学校学报,2002,4(2):9~12.
[12]侯明才,陈洪德,田景春.层序地层学的研究进展[J].矿物岩石,2001,21(3):128~134.
[13]聂逢君.层序地层学的起源及其发展[J].铀矿地质,2001,17(6) :193~202.
[14]王华,肖军等.露头层序地层学研究方法综述[J].地质科技情报,2002,21(4):15~22.
[15]孟万斌.从层序地层学到高分辨率层序地层学[J].成都理工学院学报,2002,29(4) :380~385.
[16]池秋鄂,龚福华.层序地层学基础与应用[M].北京:石油工业出版社,2001.
[17]聂逢君.层序地层学的起源及其发展[J].铀矿地质,2001,17(6):193~202.
[18]薛良清.层序地层学研究现状、方法与前景[J].石油勘探与开发,1995,22(5):8~13.
[19]薛良清.成因层序地层学的回顾与展望[J].沉积学报,2000,18(3):484~488.
[20]贾振远,蔡忠贤.成岩地层学与层序地层学[J].地球科学—中国地质大学学报,1997,22(5):538~543.
[21]郭东晓,罗啸泉.层序地层学研究在国内的进展[J].四川地质学报,1997,17(2):92~95.
[22]池秋鄂,龚福华.层序地层学基础与应用[M].北京:石油工业出版社,2001.
[23]纪友亮.层序地层学原理及层序成因机制模式[M].北京:地质出版社,1997
[24]蔡希源,李思田等.陆相盆地高精度层序地层学—隐蔽油气藏勘探基础、方法与实践(基础理论篇).北京:地质出版社,2004,17~30.
[25]陈文学.层序地层学与隐蔽圈闭预测[M].北京:石油工业出版社,2001.
[26]吴金才,张玉明等.层序地层学勘探实践[M].武汉:中国地质大学出版社,2001.
[27]W.Schlager. Depositioml bias and environmental change-important factors in sequence stratigraphy. Sedimentary Geology, 1991, 70(2/4):109~130.
[28] T.A.Cross. Stratigraphic controls on reservoir attributes in continental strata[J].地学前缘(中国地质大学,北京), 2000, 7(4):322~332.
[29] Q.R.Passey et al. A practical model for organic richness from porosity resistity logs[J].AAPG Bulletin, 1990,77(3):1777~1794.
[30]徐怀大,王世凤等.地震地层学解释基础[M].北京:中国地质大学出版社,
[31]刘振峰.地震资料在层序地层学中的应用进展[J].地球物理学进展,2003,3(1):24~28.
[32]陆基孟.地震勘探原理及资料解释[M].北京:石油工业出版社,1991.
[33]李丕龙等,陆相断陷盆地油气地质与勘探[M].北京:石油工业出版社,地质出版社,2003.
[34]徐怀大,魏魁生,洪卫东译.层序地层学原理[M].北京:石油工业出版社,1993.49~254
[35]李思田,林畅松.大型陆相盆地层序地层学研究[J].地学前缘,1995,2(3-4):133~136
[36]杨玉峰,陈树民.乌尔逊凹陷北部下白垩统层序地层发育特征[J].沉积学报,1999,17(3):422~429
[37]马中振,庞雄奇,魏建设,李明刚.海拉尔盆地乌尔逊凹陷石油地质特征[J].新疆石油地质,2007,28(3):422~429
[38]曹广华,胡亚华,张奇文,等.利用测井资料识别沉积微相方法研究[J].科学技术与工程,2004,7(15):214~215.
[39]董福湘,赵冰仪,王志华,刘立.松南十屋断陷扇三角洲和辫状河三角洲沉积体系特征[J].长春工程学院学报,2009,10(2):49~52.
[40]李寅.滦平盆地西瓜园组扇三角洲沉积体系构成及其特征[J].地球学报,2003,24(4) :353~356.
[41]林承焰,高国强.梁家楼油田湖底扇沉积体系划分对比[J].断块油气田,2007,14(1) :19~49.