Special Oil & Gas Reservoirs >

2023 , Vol. 30 >Issue 3: 38 - 46

DOI: https://doi.org/10.3969/j.issn.1006-6535.2023.03.005

Geologic Exploration

Influence of Alkaline Environment Diagenetic Evolution on Reservoir Performance in the Second Member of Shahejie Formation of Qibei Slope

  • Liu Jinku ,
  • Deng Mingjie ,
  • Zhang Ze ,
  • Li Guoliang ,
  • Fang Jinwei ,
  • Wang Chunpu ,
  • Wang Feiyang ,
  • Tan Quan
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  • 1. CNPC Chuanqing Drilling Engineering Co., Ltd., Chengdu, Sichuan 610051, China;
    2. PetroChina Bohai Drilling Engineering Co., Ltd., Tianjin 300457, China

Received date: 2022-05-17

  Revised date: 2023-03-02

  Online published: 2023-07-13

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Abstract

In order to deepen the understanding of the diagenetic environment, evolution mode and pore development mechanism of the reservoir in the Second Member of Shahejie Formation of Qibei Slope, the characteristics of alkaline environmental diagenesis, diagenetic evolution mode, alkaline environmental genesis mechanism and its influence on pore development of the dense sandstone reservoir in the Second Member of Shahejie Formation were studied by means of rock (cast) thin section, scanning electron microscopy and X-ray diffraction analysis. The results show that there are various alkaline environment diagenesis phenomena in the reservoir, such as quartz dissolution, multi-phase carbonate mineral cementation and metasomatism, anhydrite metasomatism and alkaline clay mineral assemblage; the current reservoir diagenctic stage is in the mesogenetic A2 sub-stage, and the diagenetic environment has experienced alkaline-acidic-alkaline changes during the whole diagenetic evolution; in the early diagenetic stage, the formation of the alkaline diagenetic environment was closely related to the saltwater lake basin environment in the same sedimentary stage. In the mesogenetic A2 sub-stage, due to the enrichment of metal cations, the acidic water source was reduced and heavily depleted, resulting in the increase of the pH value of the pore water medium and a return to the alkaline diagenetic environment; the multi-phase carbonate cement formed in the alkaline environment filled the pores in large quantities, which significantly reduces the reservoir space, and at the same time, the early alkaline fluid medium in the reservoir also suppressed the dissolution modification intensity of the acidic fluid to the reservoir, but the quartz dissolution in the alkaline environment formed a large number of secondary pores, which is the main mechanism of pore development in the reservoir within the study area. The research results are of guiding significance for predicting the distribution of high-quality reservoirs in the study area.

Key words： reservoir pore; diagenetic evolution; quartz dissolution; alkaline environment; reservoir performance; Qibei slope

Cite this article

Liu Jinku , Deng Mingjie , Zhang Ze , Li Guoliang , Fang Jinwei , Wang Chunpu , Wang Feiyang , Tan Quan . Influence of Alkaline Environment Diagenetic Evolution on Reservoir Performance in the Second Member of Shahejie Formation of Qibei Slope[J]. Special Oil & Gas Reservoirs, 2023 , 30(3) : 38 -46 . DOI: 10.3969/j.issn.1006-6535.2023.03.005

References

[1] 邱隆伟,赵伟,刘魁元.碱性成岩作用及其在济阳坳陷的应用展望[J].油气地质与采收率,2007,14(2):10-15.
QIU Longwei,ZHAO Wei,LIU Kuiyuan.Alkali diagenesis and its application in Jiyang Depression[J].Petroleum Geology and Recovery Efficiency,2007,14(2):10-15.
[2] 陈丽华,赵澄林,纪友亮,等.碎屑岩天然气储集层次生孔隙的三种成因机理[J].石油勘探与开发,1999,26(5):77-79.
CHEN Lihua,ZHAO Chenglin,JI Youliang,et al.Three formation mechanisms of secondary porosity in clastic gas reservoir rocks[J].Petroleum Exploration and Development,1999,26(5):77-79.
[3] 邱隆伟,姜在兴,操应长,等.泌阳凹陷碱性成岩作用及其对储层的影响[J].中国科学:D辑 地球科学,2001,31(9):752-759.
QIU Longwei,JIANG Zaixing,CAO Yingchang,et al.Alkaline diagenesis in the Biyang Sag and its effect on the reservoir[J].Science in China.Series D.Journal of Earth Science,2001,31(9):752-759.
[4] 袁静,张善文,乔俊,等.东营凹陷深层溶蚀孔隙的多重介质成因机理和动力机制[J].沉积学报,2007,25(6):840-846.
YUAN Jing,ZHANG Shanwen,QIAO Jun,et al.Cause of formation and dynamic mechanisms in multiply medium of dissolved pores in deep formation of Dongying Sag[J].Acta Sedimentologica Sinica,2007,25(6):840-846.
[5] 谭先锋,田景春,李祖兵,等.碱性沉积环境下碎屑岩的成岩演化——以山东东营凹陷陡坡带沙河街组四段为例[J].地质通报,2010,29(4):535-543.
TAN Xianfeng,TIAN Jingchun,LI Zubing,et al.Diagenesis evolution of fragmental reservoir in alkali sediment environment:taking the Member 4 of Shahejie Formation of steep-slope zone in Dongying Sag,Shandong,China for example[J].Geological Bulletin of China,2010,29(4):535-543.
[6] 周瑶琪,周振柱,陈勇,等.东营凹陷民丰地区深部储层成岩环境变化研究[J].地学前缘,2011,18(2):268-276.
ZHOU Yaoqi,ZHOU Zhenzhu,CHEN Yong,et al.Research on diagenetic environmental changes of deep reservoir in Minfeng Area,Dongying Sag[J].Earth Science Frontiers,2011,18(2):268-276.
[7] 韩登林,李忠,李维锋.库车坳陷白垩系砂岩储层石英溶蚀非均质性特征及其主控因素[J].地质学报2011,85(2):256-261.
HAN Denglin,LI Zhong,LI Weifeng.Heterogeneous features of quartz grain dissolution of cretaceous sandstone reservoir in the Kuqa Depression and its major controlling factors[J].Acta Geologica Sinica,2011,85(2):256-261.
[8] 张胜斌,刘震,刘红俊.四川盆地河包场须家河组碱性成岩作用[J].新疆石油地质,2011,32(5):464-468.
ZHANG Shengbin,LIU Zhen,LIU Hongjun.Alkali diagenesis of Xujiahe sandstone in Hebaochang Block in Sichuan Basin[J].Xinjiang Petroleum Geology,2011,32(5):464-468.
[9] 田建锋,刘池洋.鄂尔多斯盆地三叠系延长组砂岩的碱性溶蚀作用[J].地球科学,2011,36(1):103-110.
TIAN Jianfeng,LIU Chiyang.Alkaline dissolution of sandstone in the Triassic Yanchang Formation in the Ordos Basin[J].Journal of Earth Science,2011,36(1):103-110.
[10] 唐鑫萍,黄文辉.利津洼陷沙四上亚段深部砂岩的成岩环境演化[J].地球科学,2013,38(4):843-852.
TANG Xinping,HUANG Wenhui.Diagenetic environment evolution of deep sandstones in the Upper Es4 of the Palaeogene in Lijin Sag[J].Journal of Earth Science,2013,38(4):843-852.
[11] 蒲秀刚,周立宏,王文革,等.黄骅坳陷歧口凹陷斜坡区中深层碎屑岩储集层特征[J].石油勘探与开发,2013,40(l):36-48.
PU Xiugang,ZHOU Lihong,WANG Wenge,et al.Medium-deep clastic reservoirs in the slope area of Qikou Sag,Huanghua Depression,Bohai Bay Basin[J].Petroleum Exploration and Development,2013,40(1):36-48.
[12] 薛宗安,赵玉宏,吴义平,等.渤海湾盆地歧北斜坡沙河街组储层特征及形成机理[J].石油与天然气地质,2015,36(2):280-287.
XUE Zongan,ZHAO Yuhong,WU Yiping,et al.Characteristics and forming mechanisms of reservoirs in the Shahejie Formation of Qibei Slope,Bohai Bay Basin[J].Oil & Gas Geology,2015,36(2):280-287.
[13] DOVE P M.The dissolution kinetics of quartz in aqueous mixed cation solutions[J].Geochimica Et Cosmo Chimica Acta,1999,63(22):3715-3728.
[14] 张思亭,刘耘.石英溶解机理的研究进展[J].矿物岩石地球化学通报,2009,28(3):294-300.
ZHANG Siting,LIU Yun.Progress review of quartz dissolution models[J].Bulletin of mineralogy,petrology and geochemistry,2009,28(3):294-300.
[15] 郑浚茂,庞明.碎屑储集岩的成岩作用研究[M].武汉:中国地质大学出版社,1989:53-55.
ZHENG Junmao,PANG Ming.Research on the diagenesis of clastic reservoir rocks[M].Wuhan:China University of Geosciences Press,1989:53-55.
[16] 王生朗,任来义,王英,等.盐湖环境成岩作用特征及其对高孔隙带形成的影响[J].石油勘探与开发,2003,30(5):47-49.
WANG Shenglang,REN Laiyi,WANG Ying,et al.Characteristics of diagenesis saline lake environment and its effect on high-porosity zones[J].Petroleum Exploration and Development,2003,30(5):47-49.
[17] 包书景,何生.泌阳凹陷地质流体对砂岩储集层中黏土矿物形成和分布的控制作用[J].地质科技情报,2005,24(2):51-56.
BAO Shujing,HE Sheng.Geofluids control of the formation and distribution of clay minerals within the sandstone reservoir in Biyang Depression[J].Geological Science and Technology Information,2005,24(2):51-56.
[18] 张杰,邱楠生,王昕,等.黄骅坳陷歧口凹陷热史和油气成藏史[J].石油与天然气地质,2005,26(4):505-511.
ZHANG Jie,QIU Nansheng,WANG Xin,et al.Thermal evolution and reservoiring history in Qikou Sag,Huanghua Depression[J].Oil & Gas Geology,2005,26(4):505-511.
[19] 李洪香,李会慎,王永凯,等.歧北斜坡沙河街组油气成藏期次分析[J].录井工程,2012,23(2):49-53.
LI Hongxiang,LI Huishen,WANG Yongkai,et al.Analysis of oil and gas accumulation period in Qibei Slope Shahejie Group[J].Mud Logging Engineering,2012,23(2):49-53.
[20] 国家经济贸易委员会.碎屑岩成岩阶段划分:SY/T 5477—2003[S].北京:石油工业出版社,2003:1-14.
State Economic and Trade Commission.The division of diagenetic stages in clastic rocks:SY/T 5477-2003[S].Beijing:Petroleum Industry Press,2003:1-14.
[21] 郑浚茂,庞明.碎屑储集岩的成岩作用研究[M].武汉:中国地质大学出版社,1989:53-55.
ZHENG Junmao,PANG Ming.Research on the diagenesis of clastic reservoir rocks[M].Wuhan:China University of Geosciences Press,1989:53-55.
[22] 孙光远,王哲麟,刘培刚,等.碱性长石溶蚀微孔发育特征及其对致密砂岩储层物性的改造作用——以鄂尔多斯盆地华庆地区三叠系延长组6段3亚段为例[J].石油与天然气地质,2022,43(3):658-669.
SUN Guangyuan,WANG Zhelin,LIU Peigang,et al.Dissolved micro-pores in alkali feldspar and their contribution to improved properties of tight sandstone reservoirs:a case study from Triassic Chang6 Member 3 Sub-member,Huaqing Area,Ordos Basin[J].Oil & Gas Geology,2022,43(3):658-669.
[23] 魏建光,付兰清,赵国忠,等. 松辽盆地古龙页岩油储层孔隙结构对外来流体的敏感性[J].大庆石油地质与开发,2022,41(3):120-129.
WEI Jianguang,FU Lanqing,ZHAO Guozhong,et al. Sensitivity of shale pore structure to external fluids for Gulong shale oil reservoir in Songliao Basin[J].Petroleum Geology & Oilfield Development in Daqing,2022,41(3):120-129.
[24] 李勇, 邓美洲, 李国蓉, 等. 川西龙门山前带雷口坡组四段古表生期大气水溶蚀作用对储集层的影响[J]. 石油实验地质, 2021, 43(1): 56-63.
LI Yong, DENG Meizhou, LI Guorong, et al. Palaeokarst characteristics and effects on reservoirs in the fourth member of Leikoupo Formation, Longmen Mountain front, western Sichuan Basin[J].Petroleum Geology & Experiment,2021, 43(1): 56-63.
[25] 高长海,孟士达,陈一俊,等. 碎屑岩地层油气藏类型及其形成主控因素[J]. 长江大学学报(自然科学版),2021,18(2):1-7.
GAO Changhai,MENG Shida,CHEN Yijun,et al. Types of clastic rock stratigraphic reservoirs and the main controlling factors of their formation[J].Journal of Yangtze University (Natural Science Edition),2021,18(2):1-7.
[26] 印森林,陈恭洋,许长福,等. 陆相混积细粒储集岩岩相构型及其对甜点的控制作用——以准噶尔盆地吉木萨尔凹陷二叠系芦草沟组页岩油为例[J].石油与天然气地质,2022,43(5):1180-1193.
YIN Senlin,CHEN Gongyang,XU Changfu,et al. Lithofacies architecture of lacustrine fine-grained mixed reservoirs and its control over sweet spot:a case study of Permian Lucaogou Formation shale oil reservoir in the Jimsar Sag,Juggar Basin[J]. Oil & Gas Geology,2022,43(5):1180-1193.
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