永乐向斜葡萄花油层成藏模式及有利区块预测
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摘要
永乐向斜在区域构造上位于三肇凹陷区内,葡萄花油层是研究区上中下部含油组合最重要的含油目的层,长期以来,对葡萄花油层成藏规律认识不清,本论文运用沉积学、层序地层学、石油地质学等学科的理论和方法,对研究区古构造、层序格架、油气成藏期次、油水分布、圈闭类型进行了深入的研究,总结出油气成藏模式和富集规律,指出了进一步勘探和开发的方向和目标,对整个三肇凹陷的油气藏成因和预测具有重要的指导意义。
本文从三肇凹陷及周边古构造演化入手,对永乐向斜古构造演化进行了精细研究,总结出古构造演化的四个阶段。在古构造研究的基础上,通过对葡萄花油层地层厚度、葡萄花油层砂岩厚度、古地貌特征、相平面展布、砂地比等分析,确定了研究区为北部单一物源。永乐向斜葡萄花油层沉积时期,沉积主要受北部大型三角洲沉积体系的控制。应用沉积学、层序地层学理论对永乐油田葡萄花油层进行精细地层划分与对比,建立了高分辨率层序地层格架,通过重点区块沉积时间单元沉积微相研究,得出研究区为三角洲前缘亚相,以水下分流河道、席状砂微相为主要储层,水下分流河道极窄且发育,并延伸较远。通过对永乐次凹陷和徐家围子次凹陷烃源岩埋藏史的研究,得知油气的初次运移期为嫩江组四段末期,油气的成藏关键期为明水组二段末期,并对油气的运移场有了新的认识。在对研究区葡萄花油层构造、砂岩、静态、动态、射孔及油水界面等方面研究基础上,重点分析了10个典型单一圈闭,总结永乐向斜带油气成藏模式,并指出‘单一局部构造’主控油因素,在成藏规律的指导下,预测了开发区周边的有利探明区和有利空白区。
Yongle syncline locates at Sanzhao Depression in the regional tectonic, Putaohua reservior is the most important oil layer in the study area of the lower part or mid section Oily portfolio. For a long time, the law of Putaohua accumulation isn’t made clear. In the paper, applying the sedimentology, sequence stratigraphy, petroleum geology, and other disciplines theories and methods, palaeostructure of the study area, sequence stratigraphic framework, the accumulation stage of oil and gas reservoirs, water and oil distribution, trap type are studied in deep; the law of hydrocarbon accumulation and enrichment is summarized. The further direction and goals of exploration and development are pointed out. There is an important guiding significance of the causes and prediction is of reservoir of the entire Sanzhao depression.
This paper begins with Sanzhao Depression and the surrounding ancient tectonic evolution. A fine study the ancient tectonic evolution of Yongle syncline is done. The four stages of tectonic evolution are summed up. On the basis of ancient structure research, by Putaohua stratigraphic thickness, Putaohua sandstone thickness, ancient geomorphologic features, and distribution of facies, sand /mud ratio analysis, the study area is the north of a single source. During Yongle syncline Putaohua the deposition, deposition mainly controlled by the northern delta large sedimentary system. Appling sedimentology, sequence stratigraphy theory , the Yongle oilfield Putaohua layer make the subtle stratigraphic division and contrast. A high-resolution sequence stratigraphic framework is established. Through highlight deposition time unit microfacies study in important area, it was found that the study area is delta front subfacies. The distributary channel, sand sheet is main reservoir. The distributary channel is very narrow, developed, and extends far. By Yongle and Xujiaweizi depression hydrocarbon source rocks buried history research, oil and gas primary migration period is the late Nenjiang Es4 group, the key period of migration of the oil and gas reservoir is the later Mingshui second member, and the oil and gas of field migration obtain a new understanding. On the basis of study area Putaohua structures, sandstone, static, dynamic, shooting a well and the oil-water interface research, the 10 typical single traps are analysis.accumulation model of Yongle syncline is summed up; 'single local structures' main controlling oil factors are pointed out. Under the guidance of the reservoir accumulation law, prediction of the development region surrounding area and favorable blank area are done.
本文从三肇凹陷及周边古构造演化入手,对永乐向斜古构造演化进行了精细研究,总结出古构造演化的四个阶段。在古构造研究的基础上,通过对葡萄花油层地层厚度、葡萄花油层砂岩厚度、古地貌特征、相平面展布、砂地比等分析,确定了研究区为北部单一物源。永乐向斜葡萄花油层沉积时期,沉积主要受北部大型三角洲沉积体系的控制。应用沉积学、层序地层学理论对永乐油田葡萄花油层进行精细地层划分与对比,建立了高分辨率层序地层格架,通过重点区块沉积时间单元沉积微相研究,得出研究区为三角洲前缘亚相,以水下分流河道、席状砂微相为主要储层,水下分流河道极窄且发育,并延伸较远。通过对永乐次凹陷和徐家围子次凹陷烃源岩埋藏史的研究,得知油气的初次运移期为嫩江组四段末期,油气的成藏关键期为明水组二段末期,并对油气的运移场有了新的认识。在对研究区葡萄花油层构造、砂岩、静态、动态、射孔及油水界面等方面研究基础上,重点分析了10个典型单一圈闭,总结永乐向斜带油气成藏模式,并指出‘单一局部构造’主控油因素,在成藏规律的指导下,预测了开发区周边的有利探明区和有利空白区。
Yongle syncline locates at Sanzhao Depression in the regional tectonic, Putaohua reservior is the most important oil layer in the study area of the lower part or mid section Oily portfolio. For a long time, the law of Putaohua accumulation isn’t made clear. In the paper, applying the sedimentology, sequence stratigraphy, petroleum geology, and other disciplines theories and methods, palaeostructure of the study area, sequence stratigraphic framework, the accumulation stage of oil and gas reservoirs, water and oil distribution, trap type are studied in deep; the law of hydrocarbon accumulation and enrichment is summarized. The further direction and goals of exploration and development are pointed out. There is an important guiding significance of the causes and prediction is of reservoir of the entire Sanzhao depression.
This paper begins with Sanzhao Depression and the surrounding ancient tectonic evolution. A fine study the ancient tectonic evolution of Yongle syncline is done. The four stages of tectonic evolution are summed up. On the basis of ancient structure research, by Putaohua stratigraphic thickness, Putaohua sandstone thickness, ancient geomorphologic features, and distribution of facies, sand /mud ratio analysis, the study area is the north of a single source. During Yongle syncline Putaohua the deposition, deposition mainly controlled by the northern delta large sedimentary system. Appling sedimentology, sequence stratigraphy theory , the Yongle oilfield Putaohua layer make the subtle stratigraphic division and contrast. A high-resolution sequence stratigraphic framework is established. Through highlight deposition time unit microfacies study in important area, it was found that the study area is delta front subfacies. The distributary channel, sand sheet is main reservoir. The distributary channel is very narrow, developed, and extends far. By Yongle and Xujiaweizi depression hydrocarbon source rocks buried history research, oil and gas primary migration period is the late Nenjiang Es4 group, the key period of migration of the oil and gas reservoir is the later Mingshui second member, and the oil and gas of field migration obtain a new understanding. On the basis of study area Putaohua structures, sandstone, static, dynamic, shooting a well and the oil-water interface research, the 10 typical single traps are analysis.accumulation model of Yongle syncline is summed up; 'single local structures' main controlling oil factors are pointed out. Under the guidance of the reservoir accumulation law, prediction of the development region surrounding area and favorable blank area are done.
引文
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[2]许化政,周新科,高正虹.我国油气地质理论的发展与思考[J].石油科技论坛,2006(2):8-12.
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[14]綦敦科.临江地区扶杨油层有利储层研究及油气富集区预测[D].北京:中国地质大学,2005.
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[16]漆家福,杨桥,王子煜.编制盆地复原古构造图的若干问题的讨论[J].地质科学,2003,38(3):413～424.
[17]马如辉,王安志.利用构造恢复原理制作古构造演化图[J].天然气工业,2006,1:34～36.
[18]李铁军,罗晓容.塔里木盆地喀什凹陷侏罗系含油气系统研究[J].石油实验地质,2005,27(1):39～43.
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[22]武晓波.Delaunay三角网的生成算法研究[J].测绘学报,1999,28(1):28—35.
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[24]MzCaullagh M T, Ross C G.Delaunay triangulation of arandom data set for iirarthmic mapping[J]. The Carto-graphic Journal,1980,(17):93—99.
[25]徐青,常歌,杨力.基于自适应分块的TIN三角网建立方法[J].中国图像图形学报,2000,5(6).
[2]许化政,周新科,高正虹.我国油气地质理论的发展与思考[J].石油科技论坛,2006(2):8-12.
[3]刘宗宝.宋芳屯凹坡带葡萄花油层油气成藏模式及有利区块预测[D].大庆,大庆石油学院,2007.
[4]池秋鄂,龚福华.层序地层学基础与应用[M].第一版.北京:石油工业出版社,2001.
[5]关德师.松辽盆地下白垩统层序地层及沉积体系研究[D].广州:中国科学院地球化学研究所,2004.
[6]桑吉盛.松辽盆地第三系可地浸砂岩型铀矿找矿方向[J].铀矿地质,1997(5):264-269.
[7]于文卿.松辽盆地演化历史和铀成矿地质条件[J].铀矿地质,1998(9):257-264.
[8]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].石油与天然气地质,1995,16(2):89-97.
[9]邓宏文,王红亮,祝永军.高分辨率层序地层学—原理及应用[M].地质出版社,2002.
[10]邓宏文,王红亮,宁宁.沉积物体积分配原理—高分辨率层序地层学的理论基础[J]地学前缘,2000,7(4):305～313.
[11]冯志琨,张兴金,马世忠,等。低渗透砂岩油田开发地质分析[M].黑龙江:黑龙江科学技术出版社,1994.
[12]崔义.单砂体内部建筑结构及其对剩余油分布的影响研究[D].大庆,大庆石油学院,2006.
[13]古莉.高分辨率层序地层学在开发早期储层描述与建模中的应用[D].北京:中国地质大学,2005.
[14]綦敦科.临江地区扶杨油层有利储层研究及油气富集区预测[D].北京:中国地质大学,2005.
[15]宋成辉,王志章,漆家福,等.多参数综合方法判别沉积微相[J].西安石油大学学报,2004,19(6):10～22.
[16]漆家福,杨桥,王子煜.编制盆地复原古构造图的若干问题的讨论[J].地质科学,2003,38(3):413～424.
[17]马如辉,王安志.利用构造恢复原理制作古构造演化图[J].天然气工业,2006,1:34～36.
[18]李铁军,罗晓容.塔里木盆地喀什凹陷侏罗系含油气系统研究[J].石油实验地质,2005,27(1):39～43.
[19]吴元燕,陈碧珏.油矿地质学[M].第二版.北京:石油工业出版社,1996.
[20]黎文清,李世安.油气田开发地质基础[M].第二版.北京:石油工业出版社,1993.379—394.
[21]吴元燕,陈碧珏,主编.油矿地质学[M].第二版:北京:石油工业出版社,1996.275—326.
[22]武晓波.Delaunay三角网的生成算法研究[J].测绘学报,1999,28(1):28—35.
[23]Lee D T,Schachter B J.Two algorithms for constructing adelaunay triangulation[J].Int.J.of Computer and Informa-tion Sciences,1980,9(3):162—168.
[24]MzCaullagh M T, Ross C G.Delaunay triangulation of arandom data set for iirarthmic mapping[J]. The Carto-graphic Journal,1980,(17):93—99.
[25]徐青,常歌,杨力.基于自适应分块的TIN三角网建立方法[J].中国图像图形学报,2000,5(6).