Petroleum Reservoir Evaluation and Development >
2024 , Vol. 14 >Issue 2: 237 - 246
DOI: https://doi.org/10.13809/j.cnki.cn32-1825/te.2024.02.009
Formation mechanism of extreme water consumption zone and synergistic mode of flow field regulation: A case study of uncompartmentalized oilfield of continental sandstone in the late stage of ultra-high water cut
Received date: 2023-05-31
Online published: 2024-05-07
Represented by the integrated oilfield of the continental sandstone reservoir in Shengli Oil Zone, the main unit of which has entered the late stage of ultra-high water cut（>95%）. This stage has led to significant challenges, including extreme water consumption in certain areas, a sharp increase in the water-to-oil ratio, a marked decline in the utilization rate of injected water, rising operating costs per ton of oil, and diminishing economic returns. Despite these issues, approximately 60% of the remaining geological reserves are still present in the reservoir, making the widespread drilling of new wells economically unfeasible. The primary obstacles to profitable development at this stage include the preferential flow of injected water through zones of extreme water consumption and limited dynamic sweep efficiency. Addressing the identification, description, and management of these extreme water consumption zones is crucial for achieving profitable development in maturing oilfields with ultra-high water cuts. This paper suggests a comprehensive approach to tackle these challenges. It involves understanding the formation and control mechanisms of extreme water consumption zones, characterizing reservoir heterogeneity based on configuration and lithology, quantitatively describing the distribution of these zones, and devising strategies to regulate their expansion using variable streamlines in existing wells. The goal is to develop a suite of profitable development technologies that enable precise reservoir characterization and effective management of extreme water consumption zones in the late ultra-high water cut stage. Traditionally, a reservoir with a 98% water cut is considered nearly depleted. However, by applying key technologies for flow field regulation and benefit enhancement to a demonstration unit within such a reservoir, its economic lifespan can be extended by over a decade. This approach can stabilize annual oil production, reduce water cut, lower operating costs per ton of oil, and facilitate low-cost development in maturing oilfields at the late ultra-high water cut stage, thereby addressing the economic and operational challenges inherent in this phase of development.
Ningkai SHU , Lijie LIU , Xiutian YAO , Yingsong HUANG , Fengpeng LAI , Wenfu CUI . Formation mechanism of extreme water consumption zone and synergistic mode of flow field regulation: A case study of uncompartmentalized oilfield of continental sandstone in the late stage of ultra-high water cut[J]. Petroleum Reservoir Evaluation and Development, 2024 , 14(2) : 237 -246 . DOI: 10.13809/j.cnki.cn32-1825/te.2024.02.009
| [1] | 黄迎松. 用于高耗水层带判别的干扰试井方法[J]. 石油钻采工艺, 2019, 41(6): 749-755. |
| [1] | HUANG Yingsong. An interference well test method for the identification of high-consumption water zone[J]. Oil Drilling and Production Technology, 2019, 41(6): 749-755. |
| [2] | 刘丽杰. 胜坨油田特高含水后期矢量开发调整模式及应用[J]. 油气地质与采收率, 2016, 23(3): 111-115. |
| [2] | LIU Lijie. Vector development adjustment modes and its application in late extra-high water cut stage of Shengtuo oilfield[J]. Petroleum Geology and Recovery Efficiency, 2016, 23(3): 111-115. |
| [3] | 刘丽杰, 张先敏, 魏祥祥, 等. 特高含水期剩余油分类评价方法[J]. 油气地质与采收率, 2022, 29(5): 83-90. |
| [3] | LIU Lijie, ZHANG Xianmin, WEI Xiangxiang, et al. Classification and evaluation method of remaining oil in ultra-high water cut stage[J]. Petroleum Geology and Recovery Efficiency, 2022, 29(5): 83-90. |
| [4] | LI S S, FENG Q H, ZHANG X M, et al. A new water flooding characteristic curve at ultra-high water cut stage[J]. Journal of Petroleum Exploration and Production Technology, 2023, 13(1): 101-110. |
| [5] | CHEN G S MENG Y L, HUAN J L, et al. Distribution and origin of anomalously high permeability zones in Weizhou formation, Weizhou 12-X oilfield, Weixinan Sag, China[J]. Earth Science Informatics, 2021, 14(4): 2003-2015. |
| [6] | 杨勇. 正韵律厚油层优势渗流通道的形成条件和时机[J]. 油气地质与采收率, 2008, 15(3): 105-107. |
| [6] | YANG Yong. Forming condition and opportunity of preponderant flowing channel in thick positive rhythm reservoir[J]. Petroleum Geology and Recovery Efficiency, 2008, 15(3): 105-107. |
| [7] | 韩智颖, 张玉晓, 黄尚军, 等. 高效流场调整技术在整装油藏特高含水期的应用[J]. 油气地球物理, 2020, 18(1): 66-71. |
| [7] | HAN Zhiying, ZHANG Yuxiao, HUANG Shangjun, et al. Application of high efficiency flow field adjustment technology in the ultra-high water cut stage of uncompartmentalized reservoir[J]. Petroleum Geophysics, 2020, 18(1): 66-71. |
| [8] | 于秀玲. 高含水油藏基于流场调整的井网及注采优化设计[D]. 青岛: 中国石油大学(华东), 2017. |
| [8] | YU Xiuling. Optimization of well pattern and injection-production based on flow field adjustment in high water-cut reservoirs[D]. Qingdao: China University of Petroleum(East China), 2017. |
| [9] | 柏明星, 张志超, 梁健巍. 中高渗透砂岩油田优势流场识别与调整[J]. 油气地质与采收率, 2017, 24(1): 100-105. |
| [9] | BAI Mingxing, ZHANG Zhichao, LIANG Jianwei. Identification and adjustment of streamline field in middle-high permeability sandstone oilfield[J]. Petroleum Geology and Recovery Efficiency, 2017, 24(1): 100-105. |
| [10] | 李林祥, 谭河清, 马建波, 等. 二元复合驱后油藏流场调整提高采收率技术——以孤东油田六区Ng54-Ng68单元为例[J]. 长江大学学报(自然科学版), 2019, 16(12): 31-36. |
| [10] | LI Linxiang, TAN Heqing, MA Jianbo, et al. EOR technology of reservoir flow field adjustment after binary composite flooding——by taking unit Ng54-Ng68in block 6 of Gudong oilfield for example[J]. Journal of Yangtze University(Natural Science Edition), 2019, 16(12): 31-36. |
| [11] | 李远光, 方越, 石璐, 等. 特高含水油田高耗水层带识别方法研究——以双河油田为例[J]. 石油地质与工程, 2019, 33(4): 65-68. |
| [11] | LI Yuanguang, FANG Yue, SHI Lu, et al. Identification method of high-water consumption zone in super high water cut oilfield: By taking Shuanghe oilfield as an example[J]. Petroleum Geology and Engineering, 2019, 33(4): 65-68. |
| [12] | 荆克尧, 佟颖, 佟震. 基于综合判识与时变数值模拟的高渗条带定量描述方法[J]. 科学技术与工程, 2021, 21(10): 3999-4004. |
| [12] | JING Keyao, TONG Ying, TONG Zhen. Quantitative description method of relatively high- permeability zone based on comprehensive identification and time-varying numerical simulation[J]. Science Technology and Engineering, 2021, 21(10): 3999-4004. |
| [13] | 刘志宏, 朱奇, 冯其红, 等. 高耗水层带的级别划分方法[J]. 特种油气藏, 2018, 25(6): 114-119. |
| [13] | LIU Zhihong, ZHU Qi, FENG Qihong, et al. Level division for high water consumption zone[J]. Special Oil and Gas Reservoirs, 2018, 25(6): 114-119. |
| [14] | 刘志宏, 黄迎松, 陈瑞, 等. 孤东油田特高含水后期流场调整技术研究与应用[C]//中国石油学会. 第九届渤海湾油气田勘探开发技术研讨会论文集, 2017: 315-320. |
| [14] | LIU Zhihong, HUANG Yingsong, CHEN Rui, et al. Research and application of flow field adjustment technology in the late stage of ultra high water cut in Gudong Oilfield[C]// Chinese Petroleum Society. Transactions of the 9th Bohai Bay Oil and Gas Exploration and Development Technology Seminar Transactions, 2017: 315-320. |
| [15] | 刘海成. 整装油藏高耗水层段治理技术研究[J]. 石化技术, 2021, 28(11): 63-64. |
| [15] | LIU Haicheng. Study on treatment technology of high water consumption zone in integrated reservoir[J]. Petrochemical Industry Technology, 2021, 28(11): 63-64. |
| [16] | 康玲珍, 李辉, 文红叶, 等. 双河油田V上层系高耗水条带识别方法研究[J]. 石油地质与工程, 2017, 31(4): 57-59 |
| [16] | KANG Lingzhen, LI Hui, WEN Hongye, et al. Identification method of high-water consumption zone in V-upper layer in Shuanghe oilfield[J]. Petroleum Geology and Engineering, 2017, 31(4): 57-59. |
| [17] | 崔传智, 韩兴源, 邴绍献, 等. 水驱油藏高含水期耗水条带表征指标及分级方法[J]. 油气地质与采收率, 2022, 29(3): 85-91. |
| [17] | CUI Chuanzhi, HAN Xingyuan, BING Shaoxian, et al. Characterization indexes and grading method of water-consumption zones in waterflooding oil reservoirs during high water cut period[J]. Petroleum Geology and Recovery Efficiency, 2022, 29(3): 85-91. |
| [18] | 赖书敏, 赵文佳, 苏建. 特高含水后期层系井网及注采优化方法与应用——以S油田T块为例[J]. 天然气与石油, 2022, 40(3): 56-61. |
| [18] | LAI Shumin, ZHAO Wenjia, SU Jian. Optimization method and application of well pattern and injection production system in ultra-high water cut stage: A case study on block T of S oilfield[J]. Natural Gas and Oil, 2022, 40(3): 56-61. |
| [19] | 岳野. 油藏中高渗条带对水驱效果的影响[J]. 化学工程与装备, 2020, 4: 66-68. |
| [19] | YUE Ye. The influence of high permeability streaks on water-driven effect in reservoir[J]. Chemical Engineering and Equipment, 2020, 4: 66-68. |
| [20] | 张赫, 单高军, 杜庆龙, 等. 大庆长垣油田特高含水后期水驱开发技术难题及其对策[J]. 大庆石油地质与开发, 2022, 41(4): 60-66. |
| [20] | ZHANG He, SHAN Gaojun, DU Qinglong, et al. Technical challenges and solution of water flooding development in late stage of ultra-high water cut in Placanticline oilfield in Daqing[J]. Petroleum Geology and Oilfield Development in Daqing, 2022, 41(4): 60-66. |
| [21] | 佟颖, 贾元元. 基于刻蚀模型的高渗条带控制下剩余油微观赋存特征[J]. 科学技术与工程, 2018, 18(28): 80-86. |
| [21] | TONG Ying, JIA Yuanyuan. Remaining oil microscopic features under the control of high-permeability zone based on etching model[J]. Science Technology and Engineering, 2018, 18(28): 80-86. |
| [22] | 孙翔宇, 任熵, 葛际江. 可视化平板模型评价注入方式对驱油的影响[J]. 实验室研究与探索, 2020, 39(9): 13-17. |
| [22] | SUN Xiangyu, REN Shang, GE Jijiang. Evaluation of the influence of injection patterns on flooding effect by visualizing flat glass model[J]. Research and Exploration in Laboratory, 2020, 39(9): 13-17. |
| [23] | JIANG X F, DENG S C, LI H B, et al. Characterization of 3D pore nanostructure and stress-dependent permeability of organic-rich shales in northern Guizhou Depression, China[J]. Journal of Rock Mechanics and Geotechnical Engineering, 2022, 14(2): 407-422. |
| [24] | 侯健, 邱茂鑫, 陆努, 等. 采用CT技术研究岩心剩余油微观赋存状态[J]. 石油学报, 2014, 35(2): 319-325. |
| [24] | HOU Jian, QIU Maoxin, LU Nu, et al. Characterization of residual oil microdistribution at pore scale using computerized tomography[J]. Acta Petrolei Sinica, 2014, 35(2): 319-325. |
| [25] | 赵红兵. 三角洲前缘韵律层特高含水期剩余油分布及调整[J]. 特种油气藏, 2006, 13(2): 58-60. |
| [25] | ZHAO Hongbing. Residual oil distribution and reconciliation for delta front rhythm zone in extra high water cut stage[J]. Special Oil and Gas Reservoirs, 2006, 13(2): 58-60. |
| [26] | 束青林. 正韵律厚油层剩余油分布模式及水平井挖潜——以孤岛油田中一区Ng53层为例[J]. 油气地质与采收率, 2004, 11(6): 34-38. |
| [26] | SHU Qinglin. Distribution mode of remaining oil and tapping the potential by horizontal wells in thick positive-rhythm oil layers-taking Ng53 layer in Zhong1 area of Gudao oilfield[J]. Petroleum Geology and Recovery Efficiency, 2004, 11(6): 34-38. |
| [27] | 杨冰, 傅强, 官敬涛, 等. 特高含水油藏不同井网流场调整模拟与驱油效率[J]. 油气藏评价与开发, 2023, 13(4): 519-524. |
| [27] | YANG Bing, FU Qiang, GUAN Jingtao, et al. Oil displacement efficiency based on different well pattern adjustment simulation in high water cut reservoirs[J]. Petroleum Reservoir Evaluation and Development, 2023, 13(4): 519-524. |
| [28] | 刘博, 张荣达, 张伊琳, 等. 双河油田高耗水条带影响因素及治理对策可行性研究[J]. 油气藏评价与开发, 2020, 10(6): 96-102. |
| [28] | LIU Bo, ZHANG Rongda, ZHANG Yilin, et al. Influencing factors and countermeasures feasibility of high water consumption strip in Shuanghe Oilfield[J]. Reservoir Evaluation and Development, 2020, 10(6): 96-102. |
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