纵向非均质低渗油藏水驱开发适应性评价
重庆科技大学, 石油与天然气工程学院, 重庆 401331
| 摘 要： | 低渗油藏的纵向非均质性是制约水驱开发效果的主要原因，严重影响原油的采出程度。为了研究纵向非均质性对低渗油藏水驱开发效果，用填砂管模拟该类储层渗透率范围内的岩心进行室内驱替实验研究，紧密围绕纵向非均质性对低渗油藏水驱开发效果的影响，使用提高采收率评价装置，开展不同条件下低渗油藏水驱开发效果实验，揭示渗透率极差、驱替速度和注采方式对低渗油藏水驱开发效果的影响规律。实验研究表明，渗透率极差越大，见水时间越早；随着驱替速度的增加，见水时间早；采出程度曲线在初始阶段线性增加，后缓慢增加，最后保持稳定；随着驱替速度的增加，采收率降低；分注合采采收率最大，合注合采次之，合注分采的方式则效果最差。 |
| 关 键 词： | 低渗油藏; 水驱油实验; 纵向非均质性; 采收率 |
| DOI： | 10.57237/j.jest.2024.01.003 |
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收稿日期: 2023-12-30
接受日期: 2024-02-27
在线出版日期: 2024-03-11
Experimental Study of Water Flooding in Low Permeability Reservoirs Considering Longitudinal Heterogeneity
School of Petroleum and Natural Gas Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
| Abstract: | The vertical heterogeneity of oil reservoirs with low permeability is the most important reason that restricts the water-drive development effect, which seriously affects the recovery of oil. In order to study the impact of vertical heterogeneity on water-drive development effect of low permeability reservoirs, indoor displacement experiments were carried out by using sand-filled tubes for simulating cores with the permeability in the range of the oil reservoir with low permeability. The experiments were closely focused on the impact of vertical heterogeneity on water-drive development effect of low permeability reservoirs. By using the recovery rate evaluation device, experiments were conducted under different conditions to investigate water-drive development effect of low permeability reservoirs. The influencing laws of permeability ratio, displacement velocity, injection-production pattern on water-drive development were revealed. Experimental results indicate that the larger the permeability ratio, the earlier the water breakthrough. As the displacement velocity increases, the water breakthrough later; the recovery curve increases linearly in the initial stage, then increases slowly, and finally remains stable; as the displacement velocity increases, the recovery decreases; the recovery rate of separate injection and production is the largest, followed by combined injection and production, while the combined injection and separate production has the worst effect. |
| Keywords: | Low Permeability Reservoir; Water Flooding Experiment; Longitudinal Heterogeneity; Recovery Factor |
基金
| 1. | 超临界CO2强化开采过程中页岩气储层渗透率变化机理研究 (基金号: YKJCX2320127) |
参考文献
| [1] | 雷传玲. 低渗透油藏改善开发效果技术对策研究 [J]. 科学技术创新, 2020, (31): 18-19. |
| [2] | 李忠兴, 韩洪宝, 程林松, 等. 特低渗油藏启动压力梯度新的求解方法及应用 [J]. 石油勘探与开发, 2004, (03): 107-109. |
| [3] | 曹雪刚. 特低渗储层非均质性对注水开发的影响 [D]. 西安石油大学, 2017. |
| [4] | 邹才能, 朱如凯, 吴松涛, 等. 常规与非常规油气聚集类型、特征、机理及展望——以中国致密油和致密气为例 [J]. 石油学报, 2012, 33(02): 173-187. |
| [5] | 万海乔, 王盛, 刘学良. 低孔低渗稠油油藏注水增能效果影响因素 [J]. 新疆石油地质, 2023, 44(03): 347-351. |
| [6] | 朱维耀, 岳明, 刘昀枫,等. 中国致密油藏开发理论研究进展[J]. 工程科学学报, 2019, 41(09): 1103-1114. |
| [7] | 刘辉, 何顺利, 李俊键, 等. 特低渗油藏水驱开发效果评价方法研究 [J]. 西南石油大学学报(自然科学版), 2009, 31(01): 58-60, 187. |
| [8] | 王亚静, 蒋珍, 马东博, 等. 常规低渗透油藏注水开发技术对策 [J]. 化学工程与装备, 2022, (07): 170, 176. |
| [9] | 胡继聪, 梁雨田, 王梦妮, 等. 低渗油藏注采结构调整与挖潜技术研究 [J]. 清洗世界, 2023, 39(04): 68-70. |
| [10] | 王维. 注水油田提高采收率技术研究与应用 [J]. 石化技术, 2023, 30(10): 180-182. |
| [11] | 高斌, 许诗婧, 胡心玲, 等. 水敏感性对低渗油藏油水两相渗流影响实验研究 [J]. 西安石油大学学报(自然科学版), 2022, 37(06): 75-81. |
| [12] | 唐海, 黄炳光, 曾凡华, 等. 模糊综合评判法确定油藏水驱开发潜力 [J]. 石油勘探与开发, 2002, (02): 97-99. |
| [13] | 于春生, 李闽, 乔国安, 等. 纵向非均质油藏水驱油实验研究[J]. 西南石油大学学报(自然科学版), 2009, 31(01): 84-86, 191-192. |
| [14] | 严科, 杨少春, 任怀强. 储层宏观非均质性定量表征研究 [J]. 石油学报, 2008, (06): 870-874, 879. |
| [15] | 于翠玲, 林承焰. 储层非均质性研究进展 [J]. 油气地质与采收率, 2007, (04): 15-18, 22, 111-112. |
| [16] | 莫建武, 孙卫, 杨希濮, 等. 严重层间非均质油藏水驱效果及影响因素研究 [J]. 西北大学学报(自然科学版), 2011, 41(01): 113-118. |
| [17] | Yue Lu, Liu Zhonghua, Ding Zhongpei, et al. Experimental study on the effect of polymer concentration and slug size on recovery degree in hyper-permeability reservoir [J]. IOP Conference Series: Earth and Environmental Science, 2018, 189: 032072. |
| [18] | 王杰祥, 王腾飞, 韩蕾, 等. 特低渗油藏空气泡沫驱提高采收率实验研究 [J]. 西南石油大学学报(自然科学版), 2013, 35(05): 130-134. |
| [19] | 陈民锋, 姜汉桥, 曾玉祥. 严重非均质油藏开发层系重组渗透率级差界限研究 [J]. 中国海上油气, 2007, (05): 319-322, 326. |
| [20] | 韩洪宝, 程林松, 张明禄, 等. 特低渗油藏考虑启动压力梯度的物理模拟及数值模拟方法 [J]. 石油大学学报(自然科学版), 2004, (06): 49-53. |
| [21] | 沈瑞, 赵芳, 高树生, 等. 低渗透纵向非均质油层水驱波及规律实验研究 [J]. 油气地质与采收率, 2013, 20(04): 91-93, 117. |
| [22] | 赵文景, 王敬, 钱其豪, 等. 非均质油藏水驱优势渗流通道演化规律 [J]. 断块油气田, 2023, 30(05): 847-857. |
