南苏丹Melut盆地下组合近源白垩系成藏模式与勘探潜力

doi:10.12108/yxyqc.20200503

岩性油气藏 ›› 2020, Vol. 32 ›› Issue (5): 23–33.doi: 10.12108/yxyqc.20200503

南苏丹Melut盆地下组合近源白垩系成藏模式与勘探潜力

史忠生^1,2, 庞文珠³, 陈彬滔¹, 薛罗¹, 赵艳军³, 马轮¹

1. 中国石油勘探开发研究院西北分院, 兰州 730020;
2. 中国石油天然气集团公司油藏描述重点实验室, 兰州 730020;
3. 中国石油国际勘探开发有限公司, 北京 100034

收稿日期:2020-01-20 修回日期:2020-03-11 出版日期:2020-10-01 发布日期:2020-08-08
第一作者:史忠生(1978-),男,博士,高级工程师,主要从事裂谷盆地石油地质与综合评价方面的研究工作。地址:(730020)甘肃省兰州市城关区雁儿湾路535号。Email:shiluck@163.com。
基金资助:
中国石油天然气集团公司重大科技项目“海外重点战略大区勘探技术研究与应用”（编号：2019D-4306）资助

Hydrocarbon accumulation models and exploration potential of near-source Cretaceous in the lower assemblage of Melut Basin,South Sudan

SHI Zhongsheng^1,2, PANG Wenzhu³, CHEN Bintao¹, XUE Luo¹, ZHAO Yanjun³, MA Lun¹

1. PetroChina Research Institute of Petroleum Exploration & Development-Northwest, Lanzhou 730020, China;
2. Key Laboratory of Reservoir Description, CNPC, Lanzhou 730020, China;
3. China National Oil and Gas Exploration and Development Company Ltd., Beijing 100034, China

Received:2020-01-20 Revised:2020-03-11 Online:2020-10-01 Published:2020-08-08

摘要/Abstract

摘要： 为了研究Melut盆地下组合近源白垩系成藏模式与勘探潜力，开展有利储盖组合识别、重点油藏解剖、典型成藏模式建立及勘探潜力分析等石油地质条件分析工作。结果表明：①近源白垩系发育3套有利储盖组合，包括源上Galhak组内部砂泥互层储盖组合、Al Renk组生油岩内“自生自储”储盖组合、及Al Renk组生油岩与Al Gayger组砂岩形成的“上生下储”储盖组合；②湖泛泥岩是Galhak组内部储盖组合成藏的主要控制因素，辫状河三角洲内前缘发育厚层分流河道砂岩与厚层湖泛泥岩，是Galhak组高产断块油藏发育的有利相带区；③ Al Gayger组反向断块圈闭具有良好的油源和侧向遮挡条件，斜坡区大断距反向断块圈闭是Al Gayger组勘探的首选目标；④沉积相带控制扇体内部油藏的类型与分布，扇根与扇中砂体厚、物性好，是发育高产断块及断层-岩性油藏的有利相带；⑤北部富油凹陷远源古近系主力产层的勘探难度越来越大，近源白垩系是北部凹陷成熟探区深化勘探的重要领域；⑥盆地南部凹陷规模小，沉积充填粗，Adar组区域盖层质量差，远源古近系Samma+Yabus-Adar组储盖组合已不是中南部有利的储盖组合，近源白垩系在中南部具有良好的成藏条件，是中南部有利的勘探层系。该研究成果对Melut盆地北部成熟探区深化勘探及中南部低探区白垩系的区域勘探具有指导意义。

关键词: 成藏模式, 远源, 近源, 白垩系, Melut盆地, 南苏丹

Abstract: In order to study the hydrocarbon accumulation models and exploration potential of the near-source Cretaceous in the lower assemblage of Melut Basin,the petroleum geological analyses of Cretaceous,such as identification of favorable reservoir-caprock assemblage,anatomy of key oil reservoirs,establishment of typical oil reservoir models and analysis of exploration potential, were carried out. The results show that:(1)Three sets of reservoircaprock assemblage were developed in the near-source Cretaceous, including interbedded reservoir-caprock assemblage of sandstones and mudstones in above-source Galhak Formation,inner-generation and inner-accumulation reservoir-caprock assemblage of Al Renk Formation,and upper-generation and lower-accumulation reservoircaprock assemblage of Al Renk and Al Gayger formations.(2)The flooding mudstones are the main controlling factor for the hydrocarbon accumulation of the inner reservoir-caprock assemblage of Galhak Formation,and the inner front of braided river delta is the favorable sedimentary facies for the development of high-production faulted blocks,with thick distributary channel sandstones and thick flooding mudstones.(3)The antithetic faulted blocks of Al Gayger Formation have good oil-source and lateral sealing conditions,and the antithetic faulted blocks with big fault throw in the slope are the preferred drilling targets.(4)The sedimentary facies determine the types and distribution of oil reservoirs in the fans,and the root and middle parts of the fans develop thick sandstones with good physical properties,which are the favorable zones for the development of high-production faultblock and fault-lithological reservoirs.(5)The exploration of the main producing layers in far-source Paleogene gets more and more difficult,and the near-source Cretaceous formations are the important targets for deepening exploration in the mature Northern Sub-basin.(6)The sub-basins in the south Melut Basin have small areas and coarse sediment infillings,which makes the regional caprocks of Adar Formation get worse,and the far-source Paleogene Samma,Yabus and Adar Formations not be favorable reservoir-caprock assemblage. The near-source Cretaceous formations have good accumulation conditions,and are the major exploration formations in the south Melut Basin. The research results have certain guiding significance for the fine exploration in the mature north Melut Basin and regional exploration of Cretaceous in the low-level south Melut Basin.

Key words: accumulation model, far-source, near-source, Cretaceous, Melut Basin, South Sudan

中图分类号:

TE122.1

史忠生, 庞文珠, 陈彬滔, 薛罗, 赵艳军, 马轮. 南苏丹Melut盆地下组合近源白垩系成藏模式与勘探潜力[J]. 岩性油气藏, 2020, 32(5): 23–33.

SHI Zhongsheng, PANG Wenzhu, CHEN Bintao, XUE Luo, ZHAO Yanjun, MA Lun. Hydrocarbon accumulation models and exploration potential of near-source Cretaceous in the lower assemblage of Melut Basin,South Sudan[J]. Lithologic Reservoirs, 2020, 32(5): 23–33.

参考文献

[1] ROSENDAHL B R. Architecture of continental rifts with special reference to East Africa. Annual Review Earth Planetary Sciences, 1987, 15:445-503.
[2] LOWELL J D. Structural styles in petroleum exploration. Tulsa, Oklahom, Oil and Gas Consultants International Inc., 1985, 477.
[3] 贾东, 武龙, 闫兵, 等.全球大型油气田的盆地类型与分布规律.高校地质学报, 2011, 17(2):170-184. JIA D, WU L, YAN B, et al. Basin types and distribution of the global giant oil and gas fields. Geological Journal of China Universities, 2011, 17(2):170-184.
[4] PAN C H. Non-marine origin of petroleum in North Shensi and the Cretaceous of Szechuan, China. AAPG Bulletin, 1941, 25(11):2058-2068.
[5] 胡见义, 黄第藩, 徐树宝, 等.中国陆相石油地质理论基础.北京:石油工业出版社, 1991:1-5. HU J Y, HUANG D F, XU S B, et al. Theoretical basis of continental petroleum geology in China. Beijing:Petroleum Industry Press, 1991:1-5.
[6] 胡朝元.生油区控制油气田分布:中国东部陆相盆地进行区域勘探的有效理论.石油学报, 1982:3(2):9-13. HU C Y. Source bed controls hydrocarbon habitat in continental basins, East China. Acta Petrolei Sinica, 1982, 3(2):9-13.
[7] 胡朝元. "源控论"适用范围量化分析.天然气工业, 2005, 25(10):1-3. HU C Y. Research on the appliance extent of "Source Control Theory" by semi quantitative statistics characteristics of oil and gas migration distance. Natural Gas Industry, 2005, 25(10):1-3.
[8] 胡见义, 徐树宝, 童晓光. 渤海湾盆地复式油气聚集区(带)的形成和分布. 石油勘探与开发, 1986, 13(1):1-8. HU J Y, XU S B, TONG X G. Formation and distribution of complex petroleum accumulation zones in Bohaiwan Basin. Petroleum Exploration and Development, 1986, 13(1):1-8.
[9] 田在艺, 史卜庆, 罗平, 等. 渤海湾盆地复式油气聚集带高勘探程度区进一步挖潜的领域. 石油学报, 2002, 23(3):1-5. TIAN Z Y, SHI B Q, LUO P, et al. Future potential exploration domains in composite oil-gas accumulation zones of Bohai Bay Basin. Acta Petrolei Sinica, 2002, 23(3):1-5.
[10] 赵文智, 邹才能, 汪泽成, 等. 富油气凹陷"满凹含油"论内涵与意义. 石油勘探与开发, 2004, 31(2):5-13. ZHAO W Z, ZOU C N, WANG Z C, et al. The intension and signification of "Sag-wide Oil-Bearing Theory" in the hydrocarbon-rich depression with terrestrial origin. Petroleum Exploration and Development, 2004, 31(2):5-13.
[11] 李丕龙, 张善文, 宋国奇, 等. 断陷盆地隐蔽油气藏形成机制:以渤海湾盆地济阳坳陷为例. 石油实验地质, 2004, 26(1):3-10. LI P L, ZHANG S W, SONG G Q, et al. Forming mechanism of subtle oil pools in fault basins:Taking the Jiyang Depression of the Bohaiwan Basin as an example. Petroleum Geology and Experiment, 2004, 26(1):3-10.
[12] 蒙启安, 朱德丰, 陈均亮, 等. 陆内裂陷盆地的复式断陷结构类型及其油气地质意义:以海-塔盆地早白垩世盆地为例. 地学前缘, 2012, 19(5):76-85. MENG Q A, ZHU D F, CHEN J L, et al. Styles of complex faulted sags in rifting basin and its significance for petroleum geology:an example from Hailar-Tamsag Early Cretaceous Basin. Earth Science Frontiers, 2012, 19(5):76-85.
[13] 潘树新, 卫平生, 袁剑英, 等. 论油气运移的"高速公路"及源外找油思想. 沉积学报, 2011, 29(2):599-604. PAN S X, WEI P S, YUAN J Y, et al. Expressway of hydrocarbon migration and the thought to find the reservoirs beyond the region of source rock. Acta Sedimentologica Sinica, 2011, 29(2):599-604.
[14] 窦立荣, 潘校华, 田作基, 等. 苏丹裂谷盆地油气藏的形成与分布:兼与中国东部裂谷盆地对比分析. 石油勘探与开发, 2006, 33(3):255-261. DOU L R, PAN X H, TIAN Z J, et al. Hydrocarbon formation and distribution of rift basins in Sudan:a comparative analysis of them with rift basins in East China. Petroleum Exploration and Development, 2006, 33(3):255-261.
[15] 欧阳文生, 张枝焕, 陆黄生, 等. 储集层沉积的两种极端模式:主动裂谷和被动裂谷. 石油勘探与开发, 2007, 34(6):687-690. OUYANG W S, ZHANG Z H, LU H S, et al. Two extreme modes of reservoir sedimentation:active rift and passive rift. Petroleum Exploration and Development, 2007, 34(6):687-690.
[16] 洪亮, 陈彬滔, 刘雄志, 等. Muglad盆地Kaikang槽西斜坡沉积演化及其油气地质意义. 岩性油气藏, 2019, 31(2):8-15. HONG L, CHEN B T, LIU X Z, et al. Sedimentary evolution and its significances for petroleum exploration in the west slope of Kaikang trough, Muglad Basin, Sudan-South Sudan. Lithologic Reservoirs, 2019, 31(2):8-15.
[17] 吴东, 朱筱敏, 刘常妮, 等. Fula凹陷中央转换带对岩性油藏勘探的意义:以Abu Gabra组为例. 岩性油气藏, 2017, 29(4):64-72. WU D, ZHU X M, LIU C N, et al. Significance of central transfer zone on lithologic reservoir exploration:a case of Abu Gabra Formation in Fula Sag, Muglad Basin, Sudan. Lithologic Reservoirs, 2017, 29(4):64-72.
[18] 李威, 窦立荣, 文志刚, 等. 乍得Bongor盆地潜山油气成因和成藏过程. 石油学报, 2017,38(11):1253-1262. LI W, DOU L R, WEN Z G, et al. Buried-hill hydrocarbon genesis and accumulation process in Bongor Basin, Chad. Acta Petrolei Sinica, 2017, 38(11):1253-1262.
[19] 袁胜强, 毛凤军, 郑风云, 等. 尼日尔Termit盆地上白垩统成藏条件分析与勘探策略. 地学前缘, 2018, 25(2):42-50. YUAN S Q, MAO F J, ZHENG F Y, et al. Analysis of hydrocarbon accumulation condition and exploration tactics of the Upper Cretaceous strata in the Termit Basin, Niger. Earth Science Frontiers, 2018, 25(2):42-50.
[20] 王国林, 史忠生, 赵艳军, 等.南苏丹Melut盆地北部地区岩性油藏成藏条件及勘探启示.岩性油气藏, 2018, 30(4):37-45. WANG G L, SHI Z S, ZHAO Y J, et al. Lithologic reservoir forming conditions and its exploration implication in northern Melut Basin, South Sudan. Lithologic Reservoirs, 2018, 30(4):37-45.
[21] 窦立荣.苏丹迈努特盆地油气成藏机理和成藏模式.矿物岩石地球化学通报, 2005, 24(1):50-57. DOU L R. Formation mechanism and model of oil and gas accumulations in the Melut Basin, Sudan. Bulletin of Mineralogy, Petrology and Geochemistry, 2005, 24(1):50-57.
[22] 童晓光, 徐志强, 史卜庆, 等.苏丹迈卢特盆地石油地质特征及成藏模式.石油学报, 2006, 27(2):1-10. TONG X G, XU Z Q, SHI B Q, et al. Petroleum geologic property and reservoir-forming pattern of Melut Basin in Sudan. Acta Petrolei Sinica, 2006, 27(2):1-10.
[23] SCHULL T J. Rift basins of Interior Sudan:Petroleum exploration and discovery. AAPG Bulletin, 1988, 72(10):1128-1142.
[24] GENIK G J. Petroleum geology of Cretaceous-Tertiary rift basins in Niger, Chad,and Central African Republic. AAPG Bulletin, 1993, 77(8):1405-1434.
[25] BROWNE S E, FAIRHEAD J D. Gravity study of the Central Africa Rift system:a model of continental disruption 1. The Ngaoundere and Abu Gabra Rifts. Tectonophysics, 1983, 94(1/4):187-203.
[26] GENIK G J. Regional framework, structural and petroleum aspects of rift basins in Niger, Chad and the Central African Republic. Tectonophysics, 1992, 213(1/2):169-185.
[27] DOU L R, XIAO K Y, CHENG D S, et al. Petroleum geology of the Melut Basin and the Great Palogue Field, Sudan. Marine and Petroleum Geology, 2007, 24(3):129-144.
[28] 史忠生, 王天琦, 薛罗, 等.中非Melut盆地高砂地比地层成藏特征与富集规律.天然气地球科学, 2017,28(2):262-271. SHI Z S, WANG T Q, XUE L, et al. Reservoir characteristics and enrichment rule of highly sandy formation in Melut Basin, Central Africa. Natural Gas Geoscience, 2017, 28(2):262-271.
[29] 刘宗堡, 付晓飞, 吕延防, 等. 大型凹陷向斜区油气倒灌式成藏:以松辽盆地三肇凹陷扶杨油层为例.地质论评, 2009, 55(5):685-692. LIU Z B, FU X F, LYU Y F, et al. Hydrocarbon reversed accumulation model of big depression syncline area:a case of the Fuyang reservoir in the Sanzhao Depression. Geological Review, 2009, 55(5):685-692.
[30] 崔永强, 崔永胜. 重论"上生下储"与"侧向运移". 地球物理学进展, 2004, 19(3):547-553. CUI Y Q, CUI Y S. Reconstruction of the oil and gas migration and accumulation patterns of the "injection migration" and the "laterly migration". Progress in Geophysics, 2004, 19(3):547-553.
[31] 史忠生, 王天琦, 方乐华, 等. 南苏丹Melut裂谷盆地扇体的发现及油气意义. 天然气地球科学, 2015, 26(1):81-88. SHI Z S, WANG T Q, FANG L H, et al. Discovery of fans in Melut Rift Basin, South Sudan and its petroleum geological significance. Natural Gas Geoscience, 2015, 26(1):81-88.
[32] 史忠生, 王天琦, 方乐华, 等.从类比中探索Muglad与Melut两大盆地勘探潜力与转型. 中国石油勘探, 2014, 19(2):67-75. SHI Z S, WANG T Q, FANG L H, et al. Study exploration potential and transformation of Muglad Basin and Melut Basin on basis of analogy. China Petroleum Exploration, 2014, 19(2):67-75.
[33] 陈彬滔, 史忠生, 薛罗, 等. 古潜山周缘滩坝沉积模式与岩性油藏勘探实践:以南苏丹Melut盆地Ruman地区Galhak组为例. 岩性油气藏, 2018,30(6):37-44. CHEN B T, SHI Z S, XUE L, et al. Depositional models and lithologic reservoir exploration of sandy beach-bar around buriedhill:a case from Galhak Formation in Ruman region of Melut Basin, South Sudan. Lithologic Reservoirs, 2018, 30(6):37-44.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed

南苏丹Melut盆地下组合近源白垩系成藏模式与勘探潜力

Hydrocarbon accumulation models and exploration potential of near-source Cretaceous in the lower assemblage of Melut Basin,South Sudan

PDF (PC)

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

Metrics

本文评价

推荐阅读 10

[1]	屈卫华, 田野, 董常春, 郭小波, 李立立, 林斯雅, 薛松, 杨世和. 松辽盆地德惠断陷白垩系烃源岩特征及其控藏作用[J]. 岩性油气藏, 2024, 36(6): 122-134.
[2]	肖博雅. 二连盆地阿南凹陷白垩系凝灰岩类储层特征及有利区分布[J]. 岩性油气藏, 2024, 36(6): 135-148.
[3]	周刚, 杨岱林, 孙奕婷, 严威, 张亚, 文华国, 和源, 刘四兵. 四川盆地及周缘寒武系沧浪铺组沉积充填过程及油气地质意义[J]. 岩性油气藏, 2024, 36(5): 25-34.
[4]	王洪星, 韩诗文, 胡佳, 潘志浩. 松辽盆地德惠断陷白垩系火石岭组凝灰岩储层预测及成藏主控因素[J]. 岩性油气藏, 2024, 36(5): 35-45.
[5]	杨为华. 松辽盆地双城断陷白垩系营城组四段致密油成藏主控因素及模式[J]. 岩性油气藏, 2024, 36(4): 25-34.
[6]	周洪锋, 吴海红, 杨禹希, 向红英, 高吉宏, 贺昊文, 赵旭. 二连盆地巴音都兰凹陷B51井区白垩系阿四段扇三角洲前缘沉积特征[J]. 岩性油气藏, 2024, 36(4): 85-97.
[7]	张磊, 李莎, 罗波波, 吕伯强, 谢敏, 陈新平, 陈冬霞, 邓彩云. 东濮凹陷北部古近系沙三段超压岩性油气藏成藏机理[J]. 岩性油气藏, 2024, 36(4): 57-70.
[8]	朱康乐, 高岗, 杨光达, 张东伟, 张莉莉, 朱毅秀, 李婧. 辽河坳陷清水洼陷古近系沙河街组深层烃源岩特征及油气成藏模式[J]. 岩性油气藏, 2024, 36(3): 146-157.
[9]	何文渊, 赵莹, 钟建华, 孙宁亮. 松辽盆地古龙凹陷白垩系青山口组页岩油储层中微米孔缝特征及油气意义[J]. 岩性油气藏, 2024, 36(3): 1-18.
[10]	牛成民, 惠冠洲, 杜晓峰, 官大勇, 王冰洁, 王启明, 张宏国. 辽中凹陷西斜坡古近系东三段湖底扇发育模式及大油田发现[J]. 岩性油气藏, 2024, 36(2): 33-42.
[11]	王金铎, 曾治平, 徐冰冰, 李超, 刘德志, 范婕, 李松涛, 张增宝. 准噶尔盆地沙湾凹陷二叠系上乌尔禾组流体相态及油气藏类型[J]. 岩性油气藏, 2024, 36(1): 23-31.
[12]	马峰, 庞文珠, 赵文光, 张斌, 赵艳军, 薛罗, 郑茜, 陈彬滔. 南苏丹境内裂谷盆地源上构造-岩性油藏成藏主控因素与成藏模式[J]. 岩性油气藏, 2023, 35(6): 92-105.
[13]	史卜庆, 丁梁波, 马宏霞, 孙辉, 张颖, 许小勇, 王红平, 范国章. 东非海域大型深水沉积体系及油气成藏特征[J]. 岩性油气藏, 2023, 35(6): 10-17.
[14]	马文杰, 王景春, 田作基, 马中振, 万学鹏, 林金逞, 许翔麟, 周玉冰. 南美洲Oriente盆地斜坡带W区块构造-岩性复合油藏成藏模式及有利区预测[J]. 岩性油气藏, 2023, 35(6): 29-36.
[15]	罗贝维, 尹继全, 胡广成, 陈华, 康敬程, 肖萌, 朱秋影, 段海岗. 阿联酋西部地区白垩系森诺曼阶高孔渗灰岩储层特征及控制因素[J]. 岩性油气藏, 2023, 35(6): 63-71.