Changes in Flow Units Caused by Water Injection: A Case from Jiyuan Area of Ordos Basin

doi:10.7657/XJPG20250507

Abstract

Abstract:

Existing flow unit classification is primarily conducted under static conditions, making it difficult to reflect the dynamic changes in reservoir properties during water injection. To investigate the dynamic changes in reservoir flow units during water injection for optimizing the dynamic detection and development plans, this study takes the Yan-8₁ layer in the Jiyuan area of Ordos Basin as an example. The static evaluation parameter of the flow unit is defined as the flow zone index (FZI). By fitting the relationship between the cumulative water injection volume and the change in FZI (ΔFZI), the change in FZI caused by water injection is combined with the static evaluation parameter of the flow unit to form a dynamic evaluation parameter of flow units. The results show that as a standard for flow unit classification, FZI is correlated with the results of injection profile tests. Using FZI as the static evaluation parameter, the flow units are classified into three types (i.e. Ⅰ, Ⅱ, Ⅲ). By comparing the reservoir properties at various stages, it can be seen that as water injection continues, the reservoir properties are gradually improved to facilitate fluid flow. Given the same water injection rate, the increase in FZI for Type Ⅲ flow units is significantly higher than those for Type Ⅰ and Type Ⅱ, but its increase rate is lower than those of Type Ⅰ and Type Ⅱ.

Key words: Ordos Basin, Jiyuan area, Jurassic, Yan'an formation, water injection, flow zone index

CLC Number:

TE122

HUO Ruilin, LI Airong, HOU Bindong, YIN Shuai, XIE Hongbing, LIU Meng, ZHAO Kaili. Changes in Flow Units Caused by Water Injection: A Case from Jiyuan Area of Ordos Basin[J]. Xinjiang Petroleum Geology, 2025, 46(5): 575-581.

Figures/Tables 7

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References 27

[1]	何传亮, 康建云, 王辛, 等. 基于沉积微相-储集空间类型的储集层流动单元划分:以彭州气田雷口坡组碳酸盐岩储集层为例[J]. 新疆石油地质, 2020, 41(4):435-443.
	HE Chuanliang, KANG Jianyun, WANG Xin, et al. Reservoir flow unit division based on sedimentary microfacies-reservoir space type:A case of carbonate reservoir of Leikoupo formation in Pengzhou gas field[J]. Xinjiang Petroleum Geology, 2020, 41(4):435-443.
[2]	李熙盛. 强非均质性储层构型表征与t流动单元智能分类评价[J]. 海洋地质前沿, 2024, 40(9):28-37.
	LI Xisheng. Characterization of strongly heterogeneous reservoir architecture and intelligent classification evaluation of flow units[J]. Marine Geology Frontiers, 2024, 40(9):28-37.
[3]	冯佃亮, 傅强, 李林祥, 等. 孤东油田七区西Ng5²⁺³砂层组流动单元类型划分及应用[J]. 断块油气田, 2016, 23(5):603-605.
	FENG Dianliang, FU Qiang, LI Linxiang, et al. Division and application of flow units in Ng5²⁺³ sand group of Gudong oilfield[J]. Fault-Block Oil & Gas Field, 2016, 23(5):603-605.
[4]	袁丙龙, 张辉, 叶青, 等. 基于三角洲复合砂体构型的流动单元划分及剩余油分布模式[J]. 沉积学报, 2021, 39(5):1253-1263.
	YUAN Binglong, ZHANG Hui, YE Qing, et al. Flow-unit classification based on compound sand-body architecture of delta and distribution pattern of remaining oil[J]. Acta Sedimentologica Sinica, 2021, 39(5):1253-1263.
[5]	朱玉双, 柳益群, 赵继勇, 等. 华池油田长3岩性油藏流动单元划分及其合理性验证[J]. 沉积学报, 2008, 26(1):120-127.
	ZHU Yushuang, LIU Yiqun, ZHAO Jiyong, et al. The flow units division and reasonableness verification of Chang 3 lithologic oil reservoir of Huachi oilfield in Ordos Basin[J]. Acta Sedimentologica Sinica, 2008, 26(1):120-127.
[6]	王亚, 刘宗宾, 路研, 等. 基于SSOM的流动单元划分方法及生产应用:以渤海湾盆地F油田古近系沙三中亚段湖底浊积水道为例[J]. 岩性油气藏, 2024, 36(2):160-169. doi: 10.12108/yxyqc.20240215
	WANG Ya, LIU Zongbin, LU Yan, et al. Flow unit division based on SSOM and its production application:A case study of sublacustrine turbidity channels of middle Es₃ in F oilfield,Bohai Bay Basin[J]. Lithologic Reservoirs, 2024, 36(2):160-169. doi: 10.12108/yxyqc.20240215
[7]	景涛涛, 韩宇宁, 石雅琨, 等. 靖安油田Y66区延9₁储层流动单元研究[J]. 河北地质大学学报, 2021, 44(3):32-36.
	JING Taotao, HAN Yuning, SHI Yakun, et al. Study on flow unit of Yan 9₁ reservoir in Y66 area of Jing'an oilfield[J]. Journal of Hebei GEO University, 2021, 44(3):32-36.
[8]	吕明针, 林承焰, 张宪国, 等. 储层流动单元划分方法评价及优选[J]. 岩性油气藏, 2015, 27(1):74-80.
	LU Mingzhen, LIN Chengyan, ZHANG Xianguo, et al. Evaluation and optimization of flow unit division methods[J]. Lithologic Reservoirs, 2015, 27(1):74-80. doi: 10.3969/j.issn.1673-8926.2015.01.011
[9]	陈哲, 陆军, 赵耀辉, 等. 绥靖油田杨19区延9-1油藏流动单元划分合理性研究[J]. 石油与天然气地质, 2015, 36(3):497-503.
	CHEN Zhe, LU Jun, ZHAO Yaohui, et al. Research on flow unit division rationality of Yan 9¹ oil reservoir in Yang 19 block of Suijing oilfield,Ordos Basin[J]. Oil & Gas Geology, 2015, 36(3):497-503.
[10]	王志章, 何刚. 储层流动单元划分方法与应用[J]. 天然气地球科学, 2010, 21(3):362-366. doi: 10.11764/j.issn.1672-1926.2010.03.362
	WANG Zhizhang, HE Gang. Division of reservoir flow unit and its application[J]. Natural Gas Geoscience, 2010, 21(3):362-366. doi: 10.11764/j.issn.1672-1926.2010.03.362
[11]	姚秀田, 徐磊, 王冉冉, 等. 高含水复杂断块油藏单层系边外注水开发模式[J]. 油气地质与采收率, 2024, 31(2):155-166.
	YAO Xiutian, XU Lei, WANG Ranran, et al. Single-layer outer edge waterflooding development model of complex fault block reservoirs with high water cut[J]. Petroleum Geology and Recovery Efficiency, 2024, 31(2):155-166.
[12]	姚振杰, 赵洋, 李剑, 等. J区块注水开发储层物性变化规律研究[J]. 非常规油气, 2021, 8(6):46-51.
	YAO Zhenjie, ZHAO Yang, LI Jian, et al. Study on the change law of physical properties after water flooding in J reservoirs block[J]. Unconventional Oil & Gas, 2021, 8(6):46-51.
[13]	靳心伟, 张伟, 赵靖康, 等. P油田注水开发物性变化规律分析[J]. 海洋石油, 2024, 44(4):50-56.
	JIN Xinwei, ZHANG Wei, ZHAO Jingkang, et al. Analysis of physical property change law of injection development in P oilfield[J]. Offshore Oil, 2024, 44(4):50-56.
[14]	姚振华, 覃建华, 高阳, 等. 吉木萨尔凹陷页岩油物性变化规律[J]. 新疆石油地质, 2022, 43(1):72-78.
	YAO Zhenhua, QIN Jianhua, GAO Yang, et al. Variations of physical properties of shale oil in Jimsar sag,Junggar Basin[J]. Xinjiang Petroleum Geology, 2022, 43(1):72-78.
[15]	党旭. 注水前后储层变化特征及动态建模研究[J]. 非常规油气, 2023, 10(6):75-81.
	DANG Xu. Study on reservoir variation characteristics and dynamic modeling before and after water injection[J]. Unconventional Oil & Gas, 2023, 10(6):75-81.
[16]	吕文雅, 安小平, 刘艳祥, 等. 致密砂岩储层注水诱导裂缝动态识别及演化特征:以鄂尔多斯盆地姬塬油田L井区长8油藏为例[J]. 石油与天然气地质, 2024, 45(5):1431-1446.
	LYU Wenya, AN Xiaoping, LIU Yanxiang, et al. Dynamic responses and evolutionary characteristics of waterflood-induced fractures in tight sandstone reservoirs:A case study of oil reservoirs in the 8th member of the Yanchang formation,Well Block L,Jiyuan oilfield,Ordos Basin[J]. Oil & Gas Geology, 2024, 45(5):1431-1446.
[17]	邱祥亮, 郑晓梅, 赖雅庭, 等. 姬塬地区长4+5油藏砂体接触关系及对油藏水驱效果的影响[J]. 油气地质与采收率, 2023, 30(6):32-44.
	QIU Xiangliang, ZHENG Xiaomei, LAI Yating, et al. Contact modes of sandstone and its influence on water flooding effect of Chang 4+5 reservoir in Jiyuan area[J]. Petroleum Geology and Recovery Efficiency, 2023, 30(6):32-44.
[18]	刘如昊, 孙雨, 闫百泉, 等. 动静结合下储层流动单元研究:以孤岛油田M区新近系馆陶组为例[J]. 沉积学报, 2023, 41(4):1170-1180.
	LIU Ruhao, SUN Yu, YAN Baiquan, et al. Reservoir flow units for dynamic and static combinations:Case study of Neogene Guantao formation in Block M,Gudao oilfield[J]. Acta Sedimentologica Sinica, 2023, 41(4):1170-1180.
[19]	刘如昊. 复杂曲流带砂体构型及其对剩余油分布的控制作用研究:以孤岛油田中一区馆陶组Ng3砂组为例[D]. 黑龙江大庆: 东北石油大学, 2022.
	LIU Ruhao. Study on sand body configuration in complex meandering zone and its control on remaining oil distribution:Taking Ng3 sand group of Guantao formation in the first area of Gudao oilfield as an example[D]. Daqing, Heilongjiang: Northeast Petroleum University, 2022.
[20]	李爱荣, 王永东, 王彦龙, 等. Q型主因子分析与判别函数法进行储层综合评价:以子长油田为例[J]. 江汉石油职工大学学报, 2015, 28(5):12-15.
	LI Airong, WANG Yongdong, WANG Yanlong, et al. Application of Q-model principal factor analysis method and discrimination function method in integrated reservoir evaluation[J]. Journal of Jianghan Petroleum University of Staff and Workers, 2015, 28(5):12-15.
[21]	李爱荣, 孟选刚, 李琪, 等. 七里村油田Y73井区长6储层特征及影响因素分析[J]. 中国西部科技, 2014, 13(10):1-2.
	LI Airong, MENG Xuangang, LI Qi, et al. The influential factors and characteristics of Chang6 formation reservoir in Y73 region,Qilicun oilfield[J]. Science and Technology of West China, 2014, 13(10):1-2.
[22]	王洪光, 蒋明, 张继春, 等. 高含水期油藏储集层物性变化特征模拟研究[J]. 石油学报, 2004, 25(6):53-58. doi: 10.7623/syxb200406011
	WANG Hongguang, JIANG Ming, ZHANG Jichun, et al. Simulation on variation of physical properties in high water-cut reservoir[J]. Acta Petrolei Sinica, 2004, 25(6):53-58. doi: 10.7623/syxb200406011
[23]	冯晗, 曲丽丽, 张旭光, 等. 中高渗油藏水驱开发储层特征变化:以南堡凹陷H油田为例[J]. 石油地质与工程, 2023, 37(5):59-64.
	FENG Han, QU Lili, ZHANG Xuguang, et al. Reservoir characteristics changes during water flooding development in medium-high permeability reservoirs:By taking H oilfield in Nanbao sag as an example[J]. Petroleum Geology and Engineering, 2023, 37(5):59-64.
[24]	方越, 孙怡韫, 李洪生, 等. 双河油田V上层系聚驱前后储层物性变化规律[J]. 当代化工, 2019, 48(9):2064-2067.
	FANG Yue, SUN Yiyun, LI Hongsheng, et al. Change of reservoir physical properties before and after polymer flooding of V-upper layer in Shuanghe oilfield[J]. Contemporary Chemical Industry, 2019, 48(9):2064-2067.
[25]	胡向阳, 吴健, 杨冬, 等. 低渗—特低渗气藏储集层物性与电性下限变化规律[J]. 新疆石油地质, 2025, 46(1):29-38.
	HU Xiangyang, WU Jian, YANG Dong, et al. Lower limits of physical and electrical properties of low to ultra-low permeability gas reservoirs[J]. Xinjiang Petroleum Geology, 2025, 46(1):29-38.
[26]	单高军, 王承祥, 王治国, 等. 基于动态渗流阻力的注水调整方法[J]. 新疆石油地质, 2023, 44(4):435-441.
	SHAN Gaojun, WANG Chengxiang, WANG Zhiguo, et al. Water injection adjustment methods based on dynamic flow resistance[J]. Xinjiang Petroleum Geology, 2023, 44(4):435-441.
[27]	谢启超, 田亚飞, 乐平, 等. 窄条带状背斜油藏边部注水开发产能影响因素[J]. 新疆石油地质, 2024, 45(5):560-566.
	XIE Qichao, TIAN Yafei, YUE Ping, et al. Factors influencing productivity of edge waterflood in elongated anticlinal reservoirs[J]. Xinjiang Petroleum Geology, 2024, 45(5):560-566.