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

doi:10.12108/yxyqc.20180605

岩性油气藏 ›› 2018, Vol. 30 ›› Issue (6): 37–44.doi: 10.12108/yxyqc.20180605

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

陈彬滔^1,2, 史忠生¹, 薛罗¹, 马轮¹, 赵艳军³, 何巍巍¹, 王磊¹, 史江龙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. 中油国际尼罗河公司, 喀土穆 10687, 苏丹

收稿日期:2018-04-17 修回日期:2018-09-20 出版日期:2018-11-16 发布日期:2018-11-16
作者简介:陈彬滔(1985-),男,硕士,工程师,主要从事储层沉积学方面的研究工作。地址:(730020)甘肃省兰州市城关区雁儿湾路535号。Email:tobychencugb@foxmail.com。
基金资助:
国家自然科学基金项目“陆相湖盆斜坡带顺坡流与沿坡流相互作用机理及沉积构型响应”（编号：41072084）资助

Depositional models and lithologic reservoir exploration of sandy beach-bar around buried-hill: a case from Galhak Formation in Ruman region of Melut Basin, South Sudan

CHEN Bintao^1,2, SHI Zhongsheng¹, XUE Luo¹, MA Lun¹, ZHAO Yanjun³, HE Weiwei¹, WANG Lei¹, SHI Jianglong¹

1. PetroChina Research Institute of Petroleum Exploration & Development-Northwest, Lanzhou 730020, China;
2. Key Laboratory of Reservoir Description, CNPC, Lanzhou 730020, China;
3. CNPC International Nile Limited, Khartoum 10687, Sudan

Received:2018-04-17 Revised:2018-09-20 Online:2018-11-16 Published:2018-11-16

摘要/Abstract

摘要： Melut盆地历经了近20年的构造圈闭勘探，目前可钻的剩余构造圈闭已十分有限，为应对储量和产量递减，亟待开展岩性油藏等新领域的探索。基于古地貌恢复、物源体系、单井微相、砂体展布等分析，综合青海湖现代沉积调查结果，提出Ruman潜山周缘白垩系Galhak组发育大型滩坝沉积，建立了潜山隆起周缘型和水下潜山台地型2类沉积模式，认为长轴三角洲前端侧翼的古潜山地貌所造就的高能滨浅湖环境是滩坝沉积的关键控制因素。Galhak组沉积初期，因强烈断层掀斜作用，Ruman潜山短暂露出水面，基岩-长轴三角洲复合供源，发育大型坝砂，单层厚度10～20 m，面积约10 km²；随后，因相对湖平面上升，Ruman潜山没入水下，发育水下潜山台地型滩坝，长轴三角洲单一供源，以大面积薄层滩砂为主，局部发育厚层坝砂。滩坝砂体与上倾尖灭线、下伏Renk组烃源岩、顶板洪泛泥岩、侧向湖相泥岩封隔等配套，形成上倾尖灭、孤立透镜体等类型的岩性圈闭。滩坝沉积的提出有效指导了岩性油藏勘探，部署的多口探井获勘探发现，提升了Ruman地区的储量规模。

关键词: Melut盆地, Ruman凹陷, 滩坝沉积, 沉积模式, 青海湖现代沉积

Abstract: After almost 20 years' exploration, only a few structural traps were left for drilling in Melut Basin, South Sudan. Exploration for new areas such as lithologic reservoirs is needed to tackle the reserve and production decline. Based on analysis of palaeogeomorphic reconstruction, provenance system, mico-facies in single well, sandbodies distribution and investigation of modern deposition in Qinghai Lake, large-scale sandy beach-bars were discovered in Cretaceous Galhak Formation around Ruman buried-hill in Melut Basin. Two depositional models of buried-hill periphery and underwater buried-hill platform were built, and high energy shore and shallow lake environment caused by buried-hill topography located beside the long axis delta was considered as the main controlling factor of sandy beach-bar deposition. In the initial stage of Galhak Formation deposition, Ruman buried hill exposed for a short duration because of intense tilting of faults, where large scale of sandy bar was developed with an area of 10 km2 and a thickness of 10-20 m, the sediment source was provided by basement and long-axis delta. Ruman burial hill was sinking into the water as the relative lake level rising, sandy beach-bars of underwater buried hill platform (dominated by large area of thin layer beach-sand with thick bar-sand in local)were developed, the sediments source was supplied by long-axis delta. Beach-bar sandbodies, up-dipping pinched-out boundary, underlying source rock of Renk Formation, flooding mudstone in the top and lateral lacustrine mudstone seal were matched to form lithological traps. The discovery of sandy beach-bar guided the lithologic reservoir exploration effectively, several exploratory wells that were deployed on the basis of "beach bar" were succeeded, promoting the reserve scale of Ruman area.

Key words: Melut Basin, Ruman subbasin, sandy beach-bar, depositional model, Qinghai Lake modern sediments

中图分类号:

TE122.2

陈彬滔, 史忠生, 薛罗, 马轮, 赵艳军, 何巍巍, 王磊, 史江龙. 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[J]. 岩性油气藏, 2018, 30(6): 37–44.

CHEN Bintao, SHI Zhongsheng, XUE Luo, MA Lun, ZHAO Yanjun, HE Weiwei, WANG Lei, SHI Jianglong. Depositional models and lithologic reservoir exploration of sandy beach-bar around buried-hill: a case from Galhak Formation in Ruman region of Melut Basin, South Sudan[J]. Lithologic Reservoirs, 2018, 30(6): 37–44.

参考文献

[1] JIANG Z X, LIU H, ZHANG S W, et al. Sedimentary characteristics of large-scale lacustrine beach-bars and their formation in the Eocene Boxing Sag of Bohai Bay Basin, East China. Sedimentology, 2011, 58(5):1087-1112.
[2] 李国斌, 姜在兴, 王升兰, 等.薄互层滩坝砂体的定量预测——以东营凹陷古近系沙四上亚段(Es_4-上)为例. 中国地质, 2010, 37(6):1559-1711. LI G B, JIANG Z X, WANG S L, et al. Sedimentary characteristics and controlling factors of beach bars in the Upper submember of the Fourth Member of the Shahejie Formation in the Lijin subbasin. Geology in China, 2010, 37(6):1559-1711.
[3] 赵东娜, 朱筱敏, 董艳蕾, 等.地震沉积学在湖盆缓坡滩坝砂体预测中的应用——以准噶尔盆地车排子地区下白垩统为例. 石油勘探与开发, 2014, 41(1):55-61. ZHAO D N, ZHU X M, DONG Y L, et al. Application of seismic sedimentology to prediction of beach and bar sandbodies in gentle slope of lacustrine basin:a case study of the Lower Cretaceous in Chepaizi area, Junggar Basin, NE China. Petroleum Exploration and Development, 2014, 41(1):55-61.
[4] 王化爱,钟建华,杨少勇,等. 柴达木盆地乌南-绿草滩地区下油砂山组滩坝砂岩特征与储层评价. 石油地球物理勘探, 2009, 44(5):597-602. WANG H A, ZHONG J H, YANG S Y, et al. Lower oil sand hill formation beach bar sandstone characteristics and reservoir evaluation in Wunan Lucaotan area, Qaidam Basin. Oil Geophysical Prospecting, 2009, 44(5):597-602.
[5] CASTELLE B, BONNETON P, DUPUIS H, et al. Double bar beach dynamics on the high-energy meso-macrotidal French Aquitanian Coast:a review. Marine Geology, 2007, 245(1):141-159.
[6] 操应长, 王健, 刘惠民. 利用环境敏感粒度组分分析滩坝砂体水动力学机制的初步探讨——以东营凹陷西部沙四上滩坝砂体沉积为例. 沉积学报, 2010, 28(2):274-284. CAO Y C, WANG J, LIU H M. Preliminary study on the hydrodynamic Mechanism of beach-bar sandbodies with environmentally sensitive grain size components. Acta Sedimentologica Sinica, 2010, 28(2):274-284.
[7] 陈彬滔, 于兴河, 王天奇, 等.岱海湖盆沿坡流与顺坡流相互作用的沉积响应.地球科学——中国地质大学学报, 2014, 39(4):399-410. CHEN B T, YU X H, WANG T Q, et al. Sedimentary response to interaction between downslope and along slope currents in Daihai Lake, North China. Earth Science:Journal of China University of Geosciences, 2014, 39(4):399-410.
[8] 姜在兴, 王雯雯, 王俊辉, 等.风动力场对沉积体系的作用. 沉积学报, 2017, 35(5):863-876. JIANG Z X, WANG W W, WANG J H, et al. The influence of wind field on depostional systems. Acta Sedimentologica Sinica, 2017, 35(5):863-876.
[9] 王永诗, 刘惠民, 高永进, 等. 断陷湖盆滩坝砂体成因与成藏:以东营凹陷沙四上亚段为例. 地学前缘, 2012, 19(1):100-107. WANG Y S, LIU H M, GAO Y J, et al. Sandbody genesis and hydrocarbon accumulation mechanism of beach-bar reservoir in faulted-lacustrine-basins:a case study from the upper of the fourth member of Shahejie Formation,Dongying Sag. Earth Science Frontiers, 2012, 19(1):100-107.
[10] 袁静, 梁绘媛, 谭明友, 等. 惠民凹陷南坡沙四上亚段滩坝砂体沉积特征及形成条件.石油与天然气地质, 2014, 35(3):410-416. YUAN J, LIANG H Y, TAN M Y, et al. Sedimentary characteristics and forming conditions of beach-bar sandbodies in the upper fourth member of the Shahejie Formation in the south slope of the Huimin Sag. Oil & Gas Geology, 2014, 35(3):410-416.
[11] 卫平生, 潘树新, 陈彬滔, 等.湖泊岸线带直坝和斜坝:形成机制与沉积特征.天然气地球科学, 2014, 25(11):1681-1688. WEI P S, PAN S X, CHEN B T, et al. Lakeshore oblique and orthogonal bars:sedimentary features and formation mechanism. Natural Gas Geoscience, 2014, 25(11):1681-1688.
[12] 高红灿, 肖斌, 郑荣才, 等. 白音查干凹陷下白垩统腾格尔组砾质滩坝沉积特征.石油与天然气地质, 2015, 36(4):612-620. GAO H C, XIAO B, ZHENG R C, et al. Sedimentary characteristics of gravelly beach-bar in the Lower Cretaceous Tenggeer Formation of Baiyinchagan sag, Erlian Basin. Oil & Gas Geology, 2015, 36(4):612-620.
[13] 胡晨林, 张元福, 姜在兴, 等.风浪作用下鄱阳湖现代滨岸滩坝的形态变化. 石油学报, 2015, 36(12):1543-1552. HU C L, ZHANG Y F, JIANG Z X, et al. Morphologic changes in modern onshore beach bar of Poyang Lake under wind and wave actions. Acta Petrolei Sinica, 2015, 36(12):1543-1552.
[14] 韩元红, 郝乐伟, 王琪, 等.青海湖近岸现代沉积滩坝主要类型及沉积特征.古地理学报, 2016, 18(5):759-768. HAN Y H, HAO L W, WANG Q, et al. Sedimentary characteristics and types of beach bars deposited in modern times in nearshore of Qinghai Lake. Journal of Palaeogeography, 2016, 18(5):759-768.
[15] 姜在兴. 风场-物源-盆地系统沉积动力学:沉积体系成因解释与分布预测新概念.北京:科学出版社, 2016:1-139. JIANG Z X. Wind-source-basin system sedimentary dynamics:New concept of explaining the origin and predicting the distribution of depositional systems. Beijing:Science Press, 2016:1-139.
[16] 朱筱敏, 信荃麟, 张晋仁.断陷湖盆滩坝储集体沉积特征及沉积模式. 沉积学报, 1994, 12(2):20-27. ZHU X M, XIN Q L, ZHANG J R. Sedimentary characteristics and models of the beach bar reservoirs in faulted down lacustrine basins. Acta Sedimentologica Sinica, 1994, 12(2):20-27.
[17] 陈世悦,杨剑萍,操应长. 惠民凹陷西部下第三系沙河街组两种滩坝沉积特征. 煤田地质与勘探, 2000, 28(3):1-4. CHEN S Y, YANG J P, CAO Y C. Sedimentary characteristics of two kinds of beach bars of Oligocene Shahejie Formation in western Huimin Depression, China. Coal Geology and Exploration, 2000, 28(3):1-4.
[18] 邓宏文, 高晓鹏, 赵宁, 等.济阳坳陷北部断陷湖盆陆源碎屑滩坝成因类型、分布规律与成藏特征.古地理学报, 2010, 12(6):737-747. DENG H W, GAO X P, ZHAO N, et al. Genetic types, distribution patterns and hydrocarbon accumulation in terrigenous beach and bar in northern faulted-lacustrine-basin of Jiyang Depression. Journal of Palaeogeography, 2010, 12(6):737-747.
[19] 史忠生, 薛罗, 牛慧赟, 等.中非Melut盆地远源岩性油藏成藏条件与勘探对策.中国石油勘探, 2017, 22(6):87-95. SHI Z S, XUE L, NIU H Y, et al. Accumulation conditions of far-source lithologic reservoirs and exploration strategy in Melut Basin, Central Africa. China Petroleum Exploration, 2017, 22(6):87-95.
[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] 吴冬, 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.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed

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

Depositional models and lithologic reservoir exploration of sandy beach-bar around buried-hill: a case from Galhak Formation in Ruman region 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]	杨丽莎, 陈彬滔, 马轮, 史忠生, 薛罗, 王磊, 史江龙, 赵艳军. 陆相湖盆坳陷期源—汇系统的要素特征及耦合关系——以南苏丹Melut盆地北部坳陷新近系Jimidi组为例[J]. 岩性油气藏, 2021, 33(3): 27-38.
[2]	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.
[3]	彭军, 褚江天, 陈友莲, 文舰, 李亚丁, 邓思思. 四川盆地高石梯—磨溪地区下寒武统沧浪铺组沉积特征[J]. 岩性油气藏, 2020, 32(4): 12-22.
[4]	黄健玲, 傅强, 邱旭明, 赵世杰, 李林祥. 咸化断陷湖盆混积岩特征及沉积模式——以金湖凹陷阜二段为例[J]. 岩性油气藏, 2020, 32(2): 54-66.
[5]	张家强, 李士祥, 周新平, 梁益财, 郭睿良, 闫灿灿, 陈俊霖, 李树同. 志丹地区长8₂砂层组缓坡浅水三角洲前缘砂体发育模式及成因[J]. 岩性油气藏, 2020, 32(1): 36-50.
[6]	仲米虹, 唐武. 前陆盆地隆后坳陷区湖底扇沉积特征及主控因素——以塔北轮南地区三叠系为例[J]. 岩性油气藏, 2018, 30(5): 18-28.
[7]	王国林, 史忠生, 赵艳军, 陈彬滔, 薛罗. 南苏丹Melut盆地北部地区岩性油藏成藏条件及勘探启示[J]. 岩性油气藏, 2018, 30(4): 37-45.
[8]	吴嘉鹏, 万丽芬, 张兰, 王英民, 赵千慧, 李昆, 王思琦. 西湖凹陷平湖组岩相类型及沉积相分析[J]. 岩性油气藏, 2017, 29(1): 27-34.
[9]	李志华, 黄文辉. 辫状河三角洲岩相特征及沉积模式——以鄂尔多斯盆地苏南地区盒8段为例[J]. 岩性油气藏, 2017, 29(1): 43-50.
[10]	卫端，高志前，孟苗苗，杨孝群，王静彬，王珊珊. 塔河地区鹰山组高精度层序划分及沉积微相展布规律[J]. 岩性油气藏, 2016, 28(6): 68-77.
[11]	欧阳雪琪，王亮，刘峰，郑荣才，任伟 . 中非 BG 盆地 BN 区块下白垩统湖底扇沉积特征[J]. 岩性油气藏, 2016, 28(3): 86-94.
[12]	王越，陈世悦，梁绘媛，邓远 . 和什托洛盖盆地侏罗系辫状河三角洲沉积模式研究[J]. 岩性油气藏, 2015, 27(5): 81-86.
[13]	王明春，李德郁，张海义，李新琦. 渤海西部沙北构造带断裂特征及其对沉积的控制作用[J]. 岩性油气藏, 2015, 27(5): 167-171.
[14]	李华，何幼斌,王英民,裴羽 . 深水交互作用沉积研究进展----以南海北部珠江口盆地为例[J]. 岩性油气藏, 2015, 27(5): 218-224.
[15]	侯国伟，刘金水，周瑞华，叶芳，李帅. 丽水凹陷低位扇群沉积模式[J]. 岩性油气藏, 2015, 27(5): 240-244.