摘要
本论文综合运用层序地层学原理和方法、地震学、地质学和测井学等理论,以落实油藏构造特征、沉积特征、储层特征,平面展布特征及其油水关系为主线,搞清该区块南屯组油藏地层层序特征、油水分布关系、油藏类型及其分布规律等情况为目的。通过大量基础工作,以现有的三维地震、钻井、测井、试油等资料为基础,以复杂断陷盆地油气藏成藏理论为指导,应用4项关键技术,即断陷盆地三维地震精细解释技术;层序地层学分析技术;沉积微相识别技术;储层评价及反演预测技术,取得了六项成果认识:(1)南屯组一段暗色泥岩为贝中次凹的主要烃源岩,属于中等-好生油岩,这套优质烃源岩是形成贝中次凹满洼含油的物质基础。(2)贝中次凹为受东西两侧控陷断层控制的双断型凹陷,不同的构造单元对油气具有不同控制作用,形成不同类型油藏,早期形成并且继承性发育的西部断阶带及中部低凸起带是油气有利的聚集区带。(3)应用层序地层学原理和方法对南屯组划分为2个三级层序,5个体系域;南一段低位体系域扇(辫状河)三角洲的内前缘水下分流河道砂体广泛分布,是主力的含油层系,水进体系域及高位体系域湖相范围分布较广的泥岩,即是该区的主力烃源岩层。(4)南一段低位体系域砂体单层厚度较大,层数较多,受多物源控制砂体错叠连片,广泛分布,为岩性油藏的形成提供了有利的条件。(5)南屯组具有较好的储集条件,其岩性普遍含凝灰质,易于溶蚀,次生溶蚀孔隙比较发育,同时凝灰质在成岩演化过程中生成大量的粘土矿物和硅化物结晶体,形成包壳可保护原生孔隙。(6)贝中次凹南屯组油藏垂向上具有2套成藏组合;油藏平面上具有分带性的特点。本论文系统总结了富油小凹陷的油气分布规律,其研究思路和方法对于其他类似地区的勘探具有重要的启示和借鉴意义。
The prime line of this thesis is clarifying structure character, sedimentary character, reservoir character, plane distribution and oil/water relationship. In this thesis, the sequence characters of the stratum, oil/water distribution relationship, reservoir types and distribution regularities of Nantun Formation are figured out, by sequence stratigraphy theory and method, seismology, geology, logging theory and so on. In this thesis, four critical technologies, including accurate 3D seismic interpretation technology of faulted basin, analytic technique of the sequence stratigraphy, recognition technique of the sedimentary microfaciesand, reservoir valuation and inversion forecasting techniques are used. Based on the available 3D seismics, well drilling, well logging, well testing data and so on and as the guide of the reservoir-forming theory of complicated faulted basin. there are six fruits and understandings, which enriched the regular recognition of the reservoir distribution in complicated faulted basin. The fruits and understandings are as follows:(1) the dark clay of Nantun 1 Member is the main hydrocarbon source rocks, which are middle to good level oil source rock in Beizhong sub sag and are also the material base of making the whole Beizhong sub sag bear oil; (2) Beizhong sub sag is a kind of duplex fault sag controlled by East and West faults, deferent structural units have different control of the oil and gas and the formation of different types of reservoir, and the favorable accumulation regions of oil and gas are early formed and inherited developed step-fault zone in west and embossed zone in center; (3) using sequence stratigraphy theory and method, Nantun formation is subdivided into two third sequences and five system tracts, underwater distributary channel sand of inner frontier of fan delta in low system tract of Nantun formation widely spread which are the main oil bearing formation, and the widespread clay of transgressive systems tract and high system tract of latchstring facies are the main hydrocarbon source rocks; (4) in low systems tract of Nantun 1 Member, there developed lot of sand zones, every single zone of which is thick, overlying and widespread, and provides advantages for the formation of lithologic oil pool; (5) for the tuffaceous lithologic characters, easy denuded, secondary pore developed, lot of clay mineral and silicide crystallization forming from the tuffaceous in the diagenetic evolution process and protectingthe primary pore, the saving conditions in Nantun formation are better; (6) there developed two set of play in vertical of Nantun formation in Beizhong sub sag, and on plane, the reservoir is zoned. The oil-gas distribution regulars of the rich-oil sag are system summed, the research clue and method of which will play an important part in the exploratory work in the similar area
引文
[1]邓宏文.美国层序研究中的新学派.石油与天然气地质,1995,V.16,N.2,89-97.
[2]Cross T A. High-resolution stratigraphic correlation from the perspective of base-level cycles and sediment accommodation. In:Proceedings of Northwestern Europian Sequence Stratigraphy Congress,105-123.
[3]Sinclair H D. High-resolution stratigraphy and facies differentiation of the shallow marine Annot Sandstones south-east France. Sedimentology,1993,40(3):955-978.
[4]邓宏文.美国层序地层学研究中的新学派—高分辨率层序地层学.石油与天然气地质.1995.16(2):89-97.
[5]Van Wagoner J C et al. Sequence Stratigraphy in Well Logs, Cores and Outcrops: Concepts for high resolution correlation of time and facies. AAPG Methods in Exploration Series,1990.
[6]Quirk D G. "Base profile":a unifying concept in alluvial sequence stratigraphy. In: Howell J A, Aitken J F, eds. High resolution sequence stratigraphy:innovations and applications. Geological Society Special Publication,1996, (104):37-50.
[7]贾承造,赵文智,邹才能,冯志强,等.2007,岩性地层油气藏地质理论与勘探技术[J],石油勘探与开发,34(3):257-272.
[8]贾承造,赵文智,邹才能等.层序地层学研究新进展[J].石油勘探与开发,2002,29(5):1-4.
[9]贾承造,赵文智,邹才能等.岩性地层油气藏勘探研究的两项核心技术[J].石油勘探与开发,2002,31(3):3-9.
[10]《大庆石油地质与开发》编辑部.中国隐蔽油气藏勘探论文集[C].哈尔滨:黑龙江科学技术出版社,1984.
[11]潘元林,孔凡仙,杨申镳,等.中国隐蔽油气藏[M].北京:地质出版社,1998.
[12]李丕龙,庞雄奇,张善文,等.陆相断陷盆地隐蔽油气藏形成-以济阳坳陷为例[M].北京:石油工业出版社,2004.
[13]刘传虎,陆相断陷盆地缓坡带分流河道油藏勘探,新疆石油地质,2006,27(4),394-397.
[14]杨玉峰,李长山,孙德君等,乌尔逊凹陷北部层序地层学研究,石油学报,1999,20(3),25-30.
[15]胡玉双,张明学,松辽盆地梨树断陷沉积演化规律及层序地层学模式,大庆石油学院学报,1999,23(1),5-7.
[16]王玉华,张吉光,张海军,海拉尔盆地贝尔断陷布达特群变质岩储层特征及勘探 方法,大庆石油地质与开发,2007,26(2),23-26.
[17]杨凯,东营凹陷王庄—宁海地区馆陶组储层预测,地球物理学进展,2005,20(1),54-57.
[18]董万百,齐玉林,秦龙卜等海,拉尔盆地贝西地区坡折带成藏类型划分,西北大学学报,2006,36(5),811-814.
[19]范立勇,夏斌,陈永红等,惠民凹陷大芦家断块东营组油气成藏控制因素研究,天然气地球科学,2007,18(3),403-407.
[20]张晶,王伟锋,班丽等,民丰洼陷岩性油气藏控制因素分析,石油天然气学报,2006,28(3),213-215.
[21]吕锡敏,任战利,方乐华等,准噶尔盆地中拐凸起侏罗系岩性油藏控制因素,天然气地球科学,2006,17(5),703-707.
[22]单俊峰,陈振岩,回雪峰.辽河坳陷西部凹陷坡洼过渡带岩性油气藏形成条件[J].石油勘探与开发,2005,32(6):42-45.
[23]黄思静,侯中建.地下孔隙率和渗透率在空间和时间上的变化及影响因素[J].沉积学报,2001,19(2):224-232.
[24]P. Aagaard等(李忠译).挪威滨外侏罗系下白垩统和第三系碎屑储集岩中碎屑钾长石的成岩纳长石化[J].地质科学译丛,1991,8(2):5-11.
[25]赵国泉,李凯明,赵海玲,等.鄂尔多斯盆地上古生界天然气储集层长石的溶蚀与次生孔隙的形成[J].石油勘探与开发,2005,32(1):53-55,75.
[26]陈丽华,赵澄林,纪友亮,等.碎屑岩天然气储集层次生孔隙的三种成因机理[J].石油勘探与开发,1999,26(5),77-81.
[27]牛彦良,海拉尔盆地潜山油藏油气沿不整合面、断层和砂体运移的控制因素,大庆石油地质与开发,2007,26(2),27-30.
[28]牛嘉玉,童晓光,胡见义,渤海湾地区高粘重质油藏的形成与分布,石油勘探与开发,1988,6:1-11.
[29]李素梅,王铁冠,张爱云,原油中吡咯化合物的地球化学特征及其意义,沉积学报,1999,17(2)312-317.
[30]胡见义,徐树宝,程克明,中国重质油藏的地质和地球化学成因,石油学报,1989,10(1):2-11.
[31]王铁冠,李素梅,张爱云等,应用含氮化合物探讨新疆轮南油田油气运移,地质学报,2000,74(1).
[32]陈建平,何忠华,魏志彬等,银额盆地查干凹陷原油地化特征及油源对比,沉积学报,2001,19(2):299-304.
[33]黎茂稳,油气二次运移研究的基本思路和几个应用实例,石油勘探与开发,2000,27(4).
[34]李明诚,石油与天然气运移研究综述,石油勘探与开发,2000,27(4).
[35]中国石油天然气总公司勘探局,1998,石油地质学新进展,石油工业出版社.
[36]吴河勇,李子顺,冯子辉等.海拉尔盆地乌尔逊一贝尔凹陷构造特征与油气成藏过程分析[J].石油学报,2006,27(增刊):1-6.
[37]刘志宏,任延广,,李春柏等.海拉尔盆地乌尔逊-贝尔凹陷的构造特征及其对油气成藏的影响[[J].大地构造与成矿学,2007,31(2):151-156.
[38]侯艳平,朱德丰,任延广等.贝尔凹陷构造演化及其对沉积和油气的控制作用.大地构造与形成[J].2008,32(3):300-307.
[39]庞雄奇,罗群,姜振学等.断陷盆地群的含油气系统特征—以海拉尔盆地乌尔逊、贝尔凹陷为例[J].新疆石油地质,2003,24(1):27-30.
[40]孟卫工.断陷盆地复杂斜坡带油气分布与成藏规律研究[D].2006.
[41]宗国洪,冯有良,刘承华等.同沉积断裂带砂砾岩体隐蔽油藏研究—以东营凹陷胜北断裂带为例[J].石油实验地质,2003,25(3):274-280.
[42]潘元林,张善文,肖焕清等.济阳断陷盆地隐蔽油气藏勘探[M].石油工业出版社,2003:10-59.
[43]杜金虎,易士威,张以明等.二连盆地隐蔽油藏勘探.石油工业出版社,2003:74-85.
[44]黄思静,武文慧,刘洁.大气水在碎屑岩次生孔隙形成中的作用——以鄂尔多斯盆地三叠系延长组为例[J].中国地质大学学报,2003,28(4),419-424.
[45]陈传平,梅博文,易绍金,等.地层水中低分子量有机酸成因分析[J].石油学报,1995,16(4):48-54.
[46]黄思静,侯中建.地下孔隙率和渗透率在空间和时间上的变化及影响因素[J].沉积学报,2001,19(2):224-232.
[47]孟元林等.储层成岩作用模拟与次生孔隙发育带预测方法研究[R].大庆石油学院秦皇岛分院,国家“十五”重大科技攻关项目,2003.
[48]杨桥,漆家福.碎屑岩层的分层去压实校正方法[J].石油实验地质,2003,(02).
[49]陈孟晋,刘锐娥,孙粉锦,拜文华,黄月明.鄂尔多斯盆地西北部上古生界碎屑岩储层的孔隙结构特征初探[J]沉积学报,2002,(04).
[50]刘锐娥,孙粉锦,拜文华,等.苏里格庙盒8气层次生孔隙成因及孔隙演化模式探讨[T].石油勘探与开发,2002,29(4),47-49.
[51]沃马克,施密特,戴维A.麦克唐纳.砂岩成岩过程中的次生储集孔隙[M].陈荷立,汤锡元,译.北京:石油工业出版社,1982.
[52]郑浚茂,庞明.碎屑储集岩的成岩作用研究[M].武汉:中国地质大学出版社,1989.
[53]穆曙光,张以明.成岩作用及阶段对碎屑岩储层孔隙演化的控制[J].西南石油学院学报,1994,16(3),22-27.
[54]Magoon K Jenyon. The petroleum system-from source to trap.AAPG Memoir 60,1994: 17-231.
[55]肖焕钦,王宝言,陈宝宁等.济阳坳陷陡坡带断裂控砂模式[J].油气地质与采收率,2002,9(5):20-22.
[56]宗国洪,冯有良,刘承华等.同沉积断裂带砂砾岩体隐蔽油藏研究—以东营凹陷胜北断裂带为例[J].石油实验地质,2003,25(3):274-280.
[57]王永诗,鲜本忠.车镇凹陷北部陡坡带断裂结构及其对沉积和成藏的控制[J].油气地质与采收率,2006,13(6):5-8.
[58]王新征.断陷湖盆缓坡带油气成藏机理与油气分布特征研究:以东营凹陷南斜坡为例[M].石油工业出版社,2005:50-117.
[59]朱筱敏,董艳蕾,杨俊生等.辽东湾地区古近系层序地层格架与沉积体系分布[J].中国科学D集,2008,38(增I):1-10.
[60]李德江,朱筱敏,董艳蕾等.辽东湾坳陷古近系沙河街组层序地层分析[J].石油勘探与开发,2007,342(6):669-676.
[61]黄传炎,王华,肖敦清等.板桥凹陷断裂陡坡带沙一段层序样式和沉积体系特征及其成藏模式研究[J].沉积学报,2007,25(3):386-391.
[62]朱筱敏.层序地层学[M].石油大学出版社,2000:150-190.