Journal of Jilin University(Earth Science Edition) ›› 2021, Vol. 51 ›› Issue (6): 1689-1699.doi: 10.13278/j.cnki.jjuese.20200134

Previous Articles     Next Articles

Diagenesis of Lower Cretaceous Clastic Reservoir and Its Influence on Physical Properties in Bongor Basin, Southern Chad

Tao Yongfu1, Li Da1, Huang Changbing2, Liao Honghui1, Zhang Huaqin1, Xun Sheng1, Li Chong1, Wu Wei3   

  1. 1. Research Institute of Exploration and Development, PetroChina Yumen Oilfield Company, Jiuquan 735000, Gansu, China;
    2. School of Environment and Resources, Southwest University of Science and Technology, Mianyang 621000, Sichuan, China;
    3. Geological Research Institute of CNPC Logging Co., Ltd., Xi'an 710000, China
  • Received:2020-06-03 Online:2021-11-26 Published:2021-11-24
  • Supported by:
    Supported by the Science and Technology Project of CNPC (2018D-0704)

PDF (PC)

45

Abstract: Based on the data of cast thin section, X-ray diffraction, cathodoluminescence, scanning electron microscope, physical property analysis, vitrinite reflectivity and wrapping temperature, combined with core observation method, the basic characteristics and diagenesis of Lower Cretaceous clastic reservoir in Bongor basin are studied. According to the volume fraction and morphology of cement, the distribution of clay mineral components, microscopic characteristics of rock structure, pore evolution and thermal evolution of organic matter, the rock diagenetic stages are divided, and the influence of diagenesis on physical properties is analyzed. The results show that:The reservoir rock type in this area is mainly feldspathic sandstone, and the cement is mainly carbonate and clay minerals; Dissolved pore intergranular pore combination has the best reservoir performance, followed by intergranular pore dissolved pore combination; Diagenesis mainly includes compaction, cementation, metasomatism and dissolution; The diagenetic stage of the target layer is mainly middle diagenetic stage A, and the diagenesis is weak to medium; Diagenesis is the main factor controlling reservoir physical properties. Compaction and cementation are destructive diagenesis, which make the original porosity lose 54.93% and 31.30% respectively; In the rock particles, feldspar, carbonate cement and other soluble substances are developed, with strong dissolution, which is the main constructive diagenesis.

Key words: reservoir characteristics, diagenesis, clastic rock, Bongor basin, Lower Cretaceous, southern Chad

CLC Number: 

  • TE112.23
[1] Marchand A M E, Smalley P C, Haseldine R S, et al. Evidence for Reduced Quartz-Cementation Rates in Oil-Filled Sandstones[J]. Geology, 2001,29(10):915-918.
[2] Wolela A M, Gierlowski-Kordesch E H. Diagenetic History of Fluvial and Lacustrine Sandstones of the Hartford Basin(Triassic-Jurassic), Newark Super-group, USA[J]. Sedimentary Geology, 2007, 197(1/2):99-126.
[3] 窦立荣,肖坤叶,胡勇,等.乍得Bongor盆地石油地质特征及成藏模式[J].石油学报,2011,32(3):379-386. Dou Lirong, Xiao Kunye, Hu Yong, et al. Petroleum Geological Characteristics and Accumulation Model of Bongor Basin in Chad[J]. Journal of Petroleum,2011,32(3):379-386.
[4] 文志刚,李威,窦立荣,等.Bongor盆地Baobab地区潜山油气成藏期次[J].石油学报,2018,39(8):869-875. Wen Zhigang, Li Wei, Dou Lirong, et al. Oil and Gas Accumulation Stage of Buried Hill in Baobab Area of Bongor Basin[J]. Journal of Petroleum,2018,39(8):869-875.
[5] 张辰.乍得H区Bongor盆地Great Baobab油田储层特性研究[D].大庆:东北石油大学,2018. Zhang Chen. Reservoir Characteristics Research of Great Baobab Oilfield in Bongor Basin,Block H,Chad[D]. Daqing:Northeast Petroleum University,2018.
[6] Folk R L. Petrology of Sedimentary Rocks[M]. Texas:Hemphill Publishing Company,1974:184.
[7] 李文强,郭兴伟,王艳忠,等. 基于海陆对比建立苏北-南黄海盆地晚二叠世-早三叠世地层格架[J].吉林大学学报(地球科学版), 2020, 50(1):18-30. Li Wenqiang,Guo Xingwei, Wang Yanzhong, et al. Establishment of Stratigraphic Framework of Late Permian to Early Triassic in Northern Jiangsu and South Yellow Sea Basin Based on Land-Sea Comparison[J]. Journal of Jilin University (Earth Science Edition), 2020, 50(1):18-30.
[8] 纪友亮.高邮凹陷古近系阜宁组一段沉积特征对储层成岩作用及物性的影响[J].地质学报,2014,88(7):1299-1310. Ji Youliang. Influence of Sedimentary Characteristics of the First Member of Funing Formation of Paleogene on Diagenesis and Physical Properties of Reservoir in Gaoyou Depression[J]. Journal of Geology,2014,88(7):1299-1310.
[9] 惠学智, 许有为, 吕娜娜, 等. 鄂尔多斯盆地华庆地区长8段成岩主控因素及其对储层的影响[J]. 世界地质, 2019, 38(4):1012-1020. Hui Xuezhi, Xu Youwei, Lü Nana, et al. Major Controlling Factors of Diagenesis and Their Influences on Chang-8 Section Reservoir, Huaqing Area, Ordos Basin[J]. Global Geology, 2019, 38(4):1012-1020.
[10] 冷庆磊, 黄玉龙, 冉波, 等. 火山碎屑岩储层溶蚀孔隙发育特征与控制因素:以松辽盆地南部陆家堡凹陷下白垩统为例[J]. 世界地质, 2020, 39(2):368-378. Leng Qinglei, Huang Yulong, Ran Bo, et al. Characteristics and Controlling Factors of Dissolution Pores in Pyroclastic Rock Reservoirs:A Case Study of Lower Cretaceous of Lujiapu Sag, Southern Songliao Basin[J]. Global Geology, 2020, 39(2):368-378.
[11] 和钟铧,王启智,王强.大兴安岭索伦地区哲斯组碎屑岩地球化学特征和锆石U-Pb年龄对沉积物源属性约束[J].吉林大学学报(地球科学版),2020,50(2):405-424. He Zhonghua, Wang Qizhi, Wang Qiang. Geochemistry and Zircon U-Pb Ages of Clastic Rocks of Zhesi Formation in Suolun Region, Great Xing'an Range:Constraints on Origins of Sediment Provenance[J]. Journal of Jilin University (Earth Science Edition), 2020, 50(2):405-424.
[12] 姚泾利,李咪,王怀厂,等.鄂尔多斯盆地东部绥德-吴堡地区山23气层砂岩成岩相类型与控因[J].河南理工大学学报(自然科学版),2020(3):45-55. Yao Jingli,Li Mi,Wang Huaichang,et al.Diagenetic Facies Types and Controlling Factors of Sandstone in Shan 23 Gas Reservoir in Suide Wubao Area,Eastern Ordos Basin[J].Journal of Henan University of Technology(Natural Science Edition),2020(3):45-55.
[13] 孙海涛,钟大康,李勇,等.超深低孔特低渗砂岩储层的孔隙成因及控制因素:以库车坳陷克深地区巴什基奇克组为例[J].吉林大学学报(地球科学版),2018,48(3):109-120. Sun Haitao, Zhong Dakang, Li Yong, et al. Pore Genesis and Controlling Factors of Ultra Deep, Low Porosity and Ultra-Low Permeability Sandstone Reservoir:Taking Bashiqiqiki Formation in Keshen Area of Kuqa Depression as an Example[J]. Journal of Jilin University(Geoscience Edition),2018, 48(3):109-120.
[14] 郭艳琴,余芳,李洋,等.鄂尔多斯盆地华庆地区长9储层成岩作用与有利成岩相[J].西北大学学报(自然科学版),2016,46(4):558-564. Guo Yanqin, Yu Fang, Li Yang, et al. Diagenesis and Favorable Diagenetic Facies of Chang 9 Reservoir in Huaqing Area, Ordos Basin[J]. Journal of Northwest University (Natural Science Edition), 2016,46(4):558-564.
[15] 司马立强,黄丹,韩世峰,等.鄂尔多斯盆地靖边气田南部古风化壳岩溶诸层有效性评价[J].天然气工业,2015,35(4):7-15. Sima Liqiang, Huang Dan, Han Shifeng, et al. Effectiveness Evaluation of Paleoweathering Crust Karst Layers in the South of Jingbian Gas Field,Ordos Basin[J]. Natural Gas Industry,2015,35(4):7-15.
[16] Houseknecht D W.Assessing the Relative Importance of Compaction Processes and Cementation to Reduction of Porosity in Sandstones[J]. AAPG Bulletin,1987,71(3):633-642.
[1] Tian Xingwang, Luo Bing, Sun Yiting, Liu Ran, Li Ya, Chen Yangui, Zhou Chunlin, Wang Hua, Li Yading, Wang Wei, Wang Yunlong, Yang Dailin. Natural Gas Characteristics and Source Analysis of Permian Volcanic Gas Reservoir: A Case Study of Well YT1 in Chengdu-Jianyang Area, Sichuan Basin [J]. Journal of Jilin University(Earth Science Edition), 2021, 51(2): 325-335.
[2] Zhang Dazhi, Chu Lilan, Zhou Xiang, Wang Xiaolian, Li Xin. Diagenesis and Diagenesis Facies of Tight Gas Reservoir of Shahezi Formation, in Xujiaweizi Fault Depression of North Songliao Basin [J]. Journal of Jilin University(Earth Science Edition), 2021, 51(1): 22-34.
[3] Liu Rong, Yan Xu, Liu Zhaojun, Zhang Kun, Wu Xinpu, Zhao Kang'an. Characteristics and Geological Significance of Palynological Fossils from Bayingebi Formation of Lower Cretaceous in Yin’e Basin [J]. Journal of Jilin University(Earth Science Edition), 2020, 50(2): 341-355.
[4] Song Yu, Liu Zhaojun, Achim Bechtel, Xu Yinbo, Meng Qingtao, Sun Pingchang, Zhu Kai. Controlling Factors of Oil Shale and Coal Oil Yield in Lower Cretaceous Muling Formation in Laoheishan Basin [J]. Journal of Jilin University(Earth Science Edition), 2020, 50(2): 378-391.
[5] Chi Huanzhao, Dong Fuxiang, Xue Xiaogang, Liu Cai, Si Kao. Geological Characteristics of Typical Volcanic Edifices of Yingcheng Formation in Southern Songliao Basin [J]. Journal of Jilin University(Earth Science Edition), 2019, 49(6): 1649-1657.
[6] Wang Yuxiang, Gu Yi, Fu Qiang, Wang Bin, Wan Yanglu, Li Yingtao. Characteristics and Genesis of Deep Carbonate Reservoirs in Shunbei Area [J]. Journal of Jilin University(Earth Science Edition), 2019, 49(4): 932-946.
[7] Wang Fuping, Li Gang, Gao Yuanhong, Duan Longchen, Liu Haisheng. Effect of Drilling Fluid Properties on Pyroclastic Rock Collapsing: A Case Study of Pyroclastic Rock in Akechukesai Mining Area of Qinghai [J]. Journal of Jilin University(Earth Science Edition), 2019, 49(4): 1093-1099.
[8] Shan Xiang, Guo Huajun, Guo Xuguang, Zou Zhiwen, Li Yazhe, Wang Libao. Influencing Factors and Quantitative Assessment of Pore Structure in Low Permeability Reservoir: A Case Study of 2nd Member of Permian Upper Urho Formation in Jinlong 2 Area, Junggar Basin [J]. Journal of Jilin University(Earth Science Edition), 2019, 49(3): 637-649.
[9] Lin Miruo, Cao Yingchang, Xi Kelai, Wang Jian, Chen Hong, Wu Junjun. Characteristics and Controlling Factors of Permian Reservoirs in Eastern Slope of Fukang Sag [J]. Journal of Jilin University(Earth Science Edition), 2018, 48(4): 991-1007.
[10] Sun Haitao, Zhong Dakang, Li Yong, Mao Yakun, Yang Xianzhang. Porosity Origin and Controlling Factors of Ultra-Deep, Low Porosity and Ultra-Low Permeability Sandstone Reservoirs: A Case Study of Bashijiqike Formation in Keshen Area of Kuqa Depression, Tarim Basin [J]. Journal of Jilin University(Earth Science Edition), 2018, 48(3): 693-704.
[11] Gao Chonglong, Ji Youliang, Jin Jun, Wang Jian, Ren Ying, Che Shiqi, Wang Ru, Huan Zhijun. Characteristics and Controlling Factors on Physical Properties of Deep Buried Favorable Reservoirs of the Qingshuihe Formation in Muosuowan Area, Junggar Basin [J]. Journal of Jilin University(Earth Science Edition), 2017, 47(4): 990-1006.
[12] Liu Xinjin, Feng Zhendong, Li Cong, Zhou Yan, Wang Yaming. Discussion of Secondary Dissolved Pore Origin in Near Source Sandy Conglomerate Reservoir: A Case Study of Xiang 6 Well Area in Chagan Depression [J]. Journal of Jilin University(Earth Science Edition), 2017, 47(2): 393-404.
[13] Jia Zhenzhen, Lin Chengyan, Ren Lihua, Dong Chunmei, Gong Bao. Diagenesis and Reservoir Quality Evolution of Low Permeability Tuffaceous Sandstones in Suderte Oilfield [J]. Journal of Jilin University(Earth Science Edition), 2016, 46(6): 1624-1636.
[14] Qu Changsheng, Qiu Longwei, Li Wentao, Shi Zheng, Wang Wei. Characteristics and Controlling Factors of the Intermediate and Mafic Volcanic Reservoirs of the Paleogene Kongdian Formation in the Weibei Sag of the Bohaiwan Basin [J]. Journal of Jilin University(Earth Science Edition), 2016, 46(5): 1284-1296.
[15] Chen Bo, Wang Zitian, Kang Li, Zhang Shuncun, Shi Ji'an. Diagenesis and Pore Evolution of Triassic Baikouquan Formation in Mabei Region,Junggar Basin [J]. Journal of Jilin University(Earth Science Edition), 2016, 46(1): 23-35.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] CHENG Li-ren, ZHANG Yu-jie, ZHANG Yi-chun. Ordovician Nautiloid Fossils of Xainza Region,Tibet[J]. J4, 2005, 35(03): 273 -0282 .
[2] LI Bing-cheng. Preliminary Studies on Holocene Climatic In Fuping,Shaanxi Province[J]. J4, 2005, 35(03): 291 -0295 .
[3] HE Zhong-hua，YANG De-ming，WANG Tian-wu，ZHENG Chang-qing. SHRIMP U[CD*2]Pb Dating of Zircons from Two-Mica Granite in Baga Area in Gangdise Belt[J]. J4, 2005, 35(03): 302 -0307 .
[4] CHEN Li， NIE Lei， WANG Xiu-fan， LI Jin. Seismic Risk Analysis of Some Electric Power Equipment Station in Suizhong[J]. J4, 2005, 35(05): 641 -645 .
[5] JI Hong-jin,SUN Feng-yue2,CHEN Man,HU Da-qian,SHI Yan-xiang,PAN Xiang-qing. Geochemical Evaluation for Uncovered GoldBearing Structures in Jiaodong Area[J]. J4, 2005, 35(03): 308 -0312 .
[6] CHU Feng-you, SUN Guo-sheng,LI Xiao-min,MA Wei-lin, ZHAO Hong-qiao. The Growth Habit and Controlling Factors of the CobaltRich Crusts in Seamount of the Central Pacific[J]. J4, 2005, 35(03): 320 -0325 .
[7] LI Bin, MENG Zi-fang， LI Xiang-bo, LU Hong-xuan, ZHENG Min. The Structural Features and Depositional Systems of the Early Tertiary in the Biyang Depression[J]. J4, 2005, 35(03): 332 -0339 .
[8] LI Tao, WU Sheng-jun, CAI Shu-ming, XUE Huai-ping, YASUNORI Nakayama. Simulation Analysis of the Storage Capacity Based on DEM Before and After Connecting to Yangtze River in Zhangdu Lake[J]. J4, 2005, 35(03): 351 -0355 .
[9] KUANG Li-xiong,GUO Jian-hua, MEI Lian-fu, TONG Xiao-lan, YANG Li. Study on the Upheaval of the Bogeda Mountain Block from Angle of Oil and Gas Exploration[J]. J4, 2005, 35(03): 346 -0350 .
[10] ZHANG Guang-xin, DENG Wei, HE Yan, RAMSIS Salama. An Application of Hydrological Response Units in Assessment of Soil Salinization Risks[J]. J4, 2005, 35(03): 356 -0360 .
Copyright © Journal of Jilin University(Earth Science Edition), All Rights Reserved.
Tel: +86-431-88502374；13756165364　E-mail: xuebao1956@jlu.edu.cn
Powered by Beijing Magtech Co. Ltd