渤海湾盆地东营凹陷胜坨地区沙四上亚段物源方向对储集砂体的控制作用
|
摘要
综合地震、测录井及地化分析资料,在古地貌分析的基础上,根据岩屑组合特征、特征元素比值分布模式以及砂砾岩百分含量等参数,对渤海湾盆地东营凹陷胜坨地区沙四上亚段物源方向和砂体类型进行了分析。沙四上亚段沉积时期,胜坨地区存在两个不同的物源体系,即坨94断层上升盘物源和胜北断层上升盘物源。在这两个物源体系的控制下,主要发育近岸水下扇、湖底扇、沟道浊积岩等不同类型的砂砾岩体。其中,近岸水下扇主要发育在陈南断层下降盘,湖底扇主要发育坨94断层和胜北断层下降盘,沟道浊积岩发育在胜北断层形成的断槽中。砂砾岩体以辫状水道和沟道浊积岩储层物性最好,其主要的储集空间为裂缝和溶蚀孔隙形成的孔缝复合系统。因此,辫状水道成为油气富集的有利相带。
An analysis of the provenances and sandbody types of the upper 4th member of Eogene Shahejie Formation(Es4)in the Shengtuo area of the Dongying Sag,the Bohai Bay Basin was carried out based on an integration of seismic,logging and geochemical data,a paleogeomorphologic analysis,and a study of lithic fragment assemblage,ratio of characteristic elements and net-to-gross ratio.The results indicate that there were two different provenance systems during the deposition of the upper Es4:one on the upthrow of the Tuo-94 fault and the other on the upthrow of the Shengbei fault.Controlled by these two systems,various types of sandbodies were developed in the area,including nearshore subaqueous fan,sublacustrine fan and channel turbidite.The nearshore subaqueous fans mainly occur on the downthrow of the Chennan fault,the sublacustrine fans mainly occur on the downthrows of the Tuo-94 fault and the Shengbei Fault,while the channel turbidites occur in the trough along the Shengbei fault.It is suggested that the braided channel sandbodies and channel turbidite have the best poroperm characteristics,and their reservoir space is composed of fractures and dissolved pores.Therefore,the braided channel is a favorable facies belt for oil and gas accumulation.
An analysis of the provenances and sandbody types of the upper 4th member of Eogene Shahejie Formation(Es4)in the Shengtuo area of the Dongying Sag,the Bohai Bay Basin was carried out based on an integration of seismic,logging and geochemical data,a paleogeomorphologic analysis,and a study of lithic fragment assemblage,ratio of characteristic elements and net-to-gross ratio.The results indicate that there were two different provenance systems during the deposition of the upper Es4:one on the upthrow of the Tuo-94 fault and the other on the upthrow of the Shengbei fault.Controlled by these two systems,various types of sandbodies were developed in the area,including nearshore subaqueous fan,sublacustrine fan and channel turbidite.The nearshore subaqueous fans mainly occur on the downthrow of the Chennan fault,the sublacustrine fans mainly occur on the downthrows of the Tuo-94 fault and the Shengbei Fault,while the channel turbidites occur in the trough along the Shengbei fault.It is suggested that the braided channel sandbodies and channel turbidite have the best poroperm characteristics,and their reservoir space is composed of fractures and dissolved pores.Therefore,the braided channel is a favorable facies belt for oil and gas accumulation.
引文
1林松辉,王华,王兴谋,等.断陷盆地陡坡带砂砾岩扇体地震反射特征——以东营凹陷为例[J].地质科技情报,2005,24(4):55～59,66
2孙龙德.东营凹陷北部斜坡带沙三—四段砂砾岩体与油气聚集[J].沉积学报,2003,21(2):278～282
3袁选俊,谯汉生.渤海湾盆地富油气凹陷隐蔽油气藏勘探[J].石油与天然气地质,2002,23(2):130～133
4黄文科,戴俊生,窦之林,等.胜坨油田储层砂体建筑结构分析[J].西南石油大学学报(自然科学版),2007,29(3):32～35
5孙永壮.东营凹陷胜坨地区沙河街组沉积体系及其油气源特征[J].中国石油大学学报(自然科学版),2006,30(6):24～30
6李春华,祝传林,王风华.东营凹陷胜坨地区沙三沙四段扇体特征与岩性油气藏[J].石油大学学报(自然科学版),2003,27(3):14～21
7朱光有,金强,周建林,等.济阳坳陷胜坨油田原油物性及其成因探讨[J].石油与天然气地质,2004,25(1):9～13
8卓勤功,蒋有录,隋风贵.渤海湾盆地东营凹陷砂岩透镜体油藏成藏动力学模式[J].石油与天然气地质,2006,27(5):620～629
9姜在兴,杨伟利,于雯泉,等.湖缘峡谷及其含油性[J].地学前缘,2005,12(3):186～193
10鄢继华,陈世悦,姜在兴.东营凹陷北部陡坡带近岸水下扇沉积特征[J].石油大学学报(自然科学版),2005,29(1):12～16
11Kneller B C,Branney M J.Sustained high-density turbidity cur-rents and the deposition of thick massive sands[J].Sedimentolo-gy,1995,42:607-616
12Dasgupta P.Architecture and facies pattern of a sublacustrine fan,Jharia Basin,India[J].Sedimentary Geology,2002,148:373-387
13Jiang Z X,Chen D Z,Qiu L W,et al.Source-controlled carbonates in a small Eocene half-graben lake basin(Shulu Sag)in central Hebei Province,North China[J].Sedimentology,2007,54:265-292
14袁选俊,谯汉生.渤海湾盆地富油气凹陷隐蔽油气藏勘探[J].石油与天然气地质,2002,23(2):130～133
15张晶,王伟锋,荣启宏,等.东营凹陷民丰洼陷沙河街组三段岩性油藏控制因素[J].石油与天然气地质,2007,28(2):235～239,249
16操应长,王艳忠,徐涛玉,等.特征元素比值在沉积物物源分析中的应用[J].沉积学报,2007,25(2):230～238
17盛文波,操应长,刘晖,等.东营凹陷古近纪控盆断层演化特征及盆地结构类型[J].石油与天然气地质,2008,29(3):290～296
18Meng Y L,Li B,Wang Z G,et al.Overpressure retardation of organic acid generation and clastic reservoirs dissolution in central Huanghua Depression[J].Petroleum Exploration and Develop-ment,2008,35(1):40-43
19刘晖,操应长,姜在兴,等.渤海湾盆地东营凹陷沙河街组四段膏盐岩及地层压力分布特征[J].石油与天然气地质,2009,30(3):287～293
20Wilkinson M,Darby D,Haszeldine R S,et al.Secondary porosity generation during deep burial associated with overpressure leak-off,Fulmar Formation,UK Central Graben[J].AAPG Bulletin,1997,81:803-813
2孙龙德.东营凹陷北部斜坡带沙三—四段砂砾岩体与油气聚集[J].沉积学报,2003,21(2):278～282
3袁选俊,谯汉生.渤海湾盆地富油气凹陷隐蔽油气藏勘探[J].石油与天然气地质,2002,23(2):130～133
4黄文科,戴俊生,窦之林,等.胜坨油田储层砂体建筑结构分析[J].西南石油大学学报(自然科学版),2007,29(3):32～35
5孙永壮.东营凹陷胜坨地区沙河街组沉积体系及其油气源特征[J].中国石油大学学报(自然科学版),2006,30(6):24～30
6李春华,祝传林,王风华.东营凹陷胜坨地区沙三沙四段扇体特征与岩性油气藏[J].石油大学学报(自然科学版),2003,27(3):14～21
7朱光有,金强,周建林,等.济阳坳陷胜坨油田原油物性及其成因探讨[J].石油与天然气地质,2004,25(1):9～13
8卓勤功,蒋有录,隋风贵.渤海湾盆地东营凹陷砂岩透镜体油藏成藏动力学模式[J].石油与天然气地质,2006,27(5):620～629
9姜在兴,杨伟利,于雯泉,等.湖缘峡谷及其含油性[J].地学前缘,2005,12(3):186～193
10鄢继华,陈世悦,姜在兴.东营凹陷北部陡坡带近岸水下扇沉积特征[J].石油大学学报(自然科学版),2005,29(1):12～16
11Kneller B C,Branney M J.Sustained high-density turbidity cur-rents and the deposition of thick massive sands[J].Sedimentolo-gy,1995,42:607-616
12Dasgupta P.Architecture and facies pattern of a sublacustrine fan,Jharia Basin,India[J].Sedimentary Geology,2002,148:373-387
13Jiang Z X,Chen D Z,Qiu L W,et al.Source-controlled carbonates in a small Eocene half-graben lake basin(Shulu Sag)in central Hebei Province,North China[J].Sedimentology,2007,54:265-292
14袁选俊,谯汉生.渤海湾盆地富油气凹陷隐蔽油气藏勘探[J].石油与天然气地质,2002,23(2):130～133
15张晶,王伟锋,荣启宏,等.东营凹陷民丰洼陷沙河街组三段岩性油藏控制因素[J].石油与天然气地质,2007,28(2):235～239,249
16操应长,王艳忠,徐涛玉,等.特征元素比值在沉积物物源分析中的应用[J].沉积学报,2007,25(2):230～238
17盛文波,操应长,刘晖,等.东营凹陷古近纪控盆断层演化特征及盆地结构类型[J].石油与天然气地质,2008,29(3):290～296
18Meng Y L,Li B,Wang Z G,et al.Overpressure retardation of organic acid generation and clastic reservoirs dissolution in central Huanghua Depression[J].Petroleum Exploration and Develop-ment,2008,35(1):40-43
19刘晖,操应长,姜在兴,等.渤海湾盆地东营凹陷沙河街组四段膏盐岩及地层压力分布特征[J].石油与天然气地质,2009,30(3):287～293
20Wilkinson M,Darby D,Haszeldine R S,et al.Secondary porosity generation during deep burial associated with overpressure leak-off,Fulmar Formation,UK Central Graben[J].AAPG Bulletin,1997,81:803-813
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心