Petroleum Reservoir Evaluation and Development >
2023 , Vol. 13 >Issue 2: 233 - 239
DOI: https://doi.org/10.13809/j.cnki.cn32-1825/te.2023.02.012
Experimental study on change characteristics of fractional flow rate of each structural unit in thick oil reservoir of Daqing Oilfield
Received date: 2021-09-17
Online published: 2023-04-26
In order to improve the understanding of the fractional rate law of injection and production ends in each structural unit of intraformational heterogeneous reservoir, aiming at the multi section and multi rhythm characteristics of thick oil layer in Lamadian Oilfield, Daqing, a model of intraformational heterogeneous reservoir is constructed by the “separate injection and separate production” core, and the effects of permeability gradient and injection speed on the fractional rate change law of water flooding are studied by physical simulation experiment. The results show that when water flooding reaches 0.4 PV, there is an inflection point in the flow rate curve. At the injection end, before 0.4 PV the injected water mainly enters into the high permeability layer, and after 0.4 PV, the liquid absorption of the middle and low permeability layer increases. For the positive rhythm reservoir, with the increase of permeability gradient, the swept volume of medium low permeability layer decreases and the recovery factor decreases; With the increase of the average permeability, the swept volume of the low and medium permeability layer increases, and the water flooding recovery increases. For the compound rhythm reservoir, the positive and negative compound rhythm is greater than the negative compound rhythm. When the injection rate is 0.6 mL/min at the injection end of heterogeneous core, with the increase of number of pore volumes（PV）, the fractional flow rate of high permeability layer increases, while that of low permeability layer decreases. When the injection rate is 0.9 mL/min and 1.2 mL/min, with the increase of number of pore volumes（PV）, the fractional flow rate of high permeability layer increases first and then decreases, while that of low permeability layer decreases first and then increases. With the increase of injection rate, the recovery rate and its percentage in the total recovery rate of low and medium permeability layers increase gradually. The research results have a certain guiding significance for the understanding of the mechanism of the split ratio at both ends of the injection and production in the deep heterogeneous reservoir.
Xiuling PEI , Jiaqi LI , Xufei MA , Aixiang ZHANG , Leilei ZHANG , Xiangguo LU , Xin HE . Experimental study on change characteristics of fractional flow rate of each structural unit in thick oil reservoir of Daqing Oilfield[J]. Petroleum Reservoir Evaluation and Development, 2023 , 13(2) : 233 -239 . DOI: 10.13809/j.cnki.cn32-1825/te.2023.02.012
| [1] | 孙玉龙, 郎立术, 马清明, 等. 电阻法测定多孔介质含水饱和度可行性研究[J]. 石油天然气学报, 2012, 34(2): 110-113. |
| [1] | SUN Yulong, LANG Lishu, MA Qingming, et al. The feasibility of determing water saturation in porous media by using electrical resistivity[J]. Journal of Oil and Gas Technology, 2012, 34(2): 110-113. |
| [2] | 张娜, 元福卿, 魏翠华, 等. 普通稠油油藏聚合物驱提高采收率研究与实践——以孤岛油田B21单元为例[J]. 油气地质与采收率, 2021, 28(6): 101-106. |
| [2] | ZHANG Na, YUAN Fuqing, WEI Cuihua, et al. Research and practice of enhanced oil recovery by polymer flooding in ordinary heavy oil reservoirs: Taking Block B21, Gudao Oilfield as an example[J]. Petroleum Geology and Recovery Efficiency, 2021, 28(6): 101-106. |
| [3] | 毕永强, 高煜婷, 王春友, 等. 渗透率对菌体调剖驱油效果的影响[J]. 断块油气田, 2020, 27(4): 493-497. |
| [3] | BI Yongqiang, GAO Yuting, WANG Chunyou, et al. Effect of permeability on profile control and oil displacement by bacteria[J]. Fault-Block Oil & Gas Field, 2020, 27(4): 493-497. |
| [4] | 李义, 刘平德, 张松. 表面活性聚合物驱油剂的合成及性能研究[J]. 石油与天然气化工, 2021, 50(6): 81-86. |
| [4] | LI Yi, LIU Pingde, ZHANG Song. Study of preparation and properties of surface-active polymers for oil displacement agent[J]. Chemical Engineering of Oil & Gas, 2021, 50(6): 81-86. |
| [5] | 高清春, 汪志明, 李小龙, 等. 抗温耐盐滑溜水压裂液用聚合物合成研究[J]. 石油与天然气化工, 2020, 49(2): 80-86. |
| [5] | GAO Qingchun, WANG Zhiming, LI Xiaolong, et al. Study on polymer synthesis of temperature-resistant and salt-resistant slick water fracturing fluids[J]. Chemical Engineering of Oil & Gas, 2020, 49(1): 80-86. |
| [6] | 兰玉波, 杨清彦, 李斌会. 聚合物驱波及系数和驱油效率实验研究[J]. 石油学报, 2006, 27(1): 64-68. |
| [6] | LAN Yubo, YANG Qingyan, LI Binhui, et al. Experimental research on sweep efficiency and oil-displacement efficiency of polymer flooding[J]. Acta Petrolei Sinica, 2006, 27(1): 64-68. |
| [7] | 徐辉, 宋敏, 孙秀芝, 等. 新型耐特高温抗水解型聚合物驱油性能[J]. 油气地质与采收率, 2021, 28(4): 101-106. |
| [7] | XU Hui, SONG Min, SUN Xiuzhi, et al. Study on oil displacement performance of a new type of polymer with ultra-high temperature and hydrolysis resistance[J]. Petroleum Geology and Recovery Efficiency, 2021, 28(4): 101-106. |
| [8] | 舒政, 齐勇, 程飞豹, 等. 海上油田聚合物超重力速溶技术研究[J]. 油气地质与采收率, 2021, 28(3): 142-146. |
| [8] | SHU Zheng, QI Yong, CHENG Feibao, et al. Research on high-gravity instant dissolving technology of polymers in offshore oilfields[J]. Petroleum Geology and Recovery Efficiency, 2021, 28(3): 142-146. |
| [9] | 陈明贵, 杨光, 石鑫, 等. 渤海稠油油田早期注聚剖面返转规律及控制方法研究[J]. 油田化学, 2017, 34(2): 278-284. |
| [9] | CHEN Minggui, YANG Guang, SHI Xin, et al. Laboratory study of profile reversion in early stage polymer injection for heavy oil recovery in China Bohai Bay[J]. Oilfield Chemistry, 2017, 34(2): 278-284. |
| [10] | 何金钢, 宋考平, 袁琳, 等. 岩心渗透率级差对泡沫分流量的影响[J]. 大庆石油地质与开发, 2015, 34(5): 117-122. |
| [10] | HE Jingang, SONG Kaoping, YUAN Lin, et al. Influences of the core permeability differential on the fractional flow of the foam[J]. Petroleum Geology & Oilfield Development in Daqing, 2015, 34(5): 117-122. |
| [11] | 李昀龙, 牛瑞, 游仁宗, 等. 多层非均质储层聚合物驱剖面返转特征实验[J]. 断块油气田, 2020, 27(6): 794-798. |
| [11] | LI Junlong, NIU Rui, YOU Renzong, et al. Experiment of polymer flooding profile inversion characteristics in commingled heterogeneous reservoirs[J]. Fault-Block Oil & Gas Field, 2020, 27(6): 794-798. |
| [12] | 刘义刚, 张云宝, 谢坤, 等. Cr3+聚合物凝胶与水交替注入调驱作用机理——以渤海LD10-1油田为例[J]. 断块油气田, 2017, 24(2): 251-254. |
| [12] | LIU Yigang, ZHANG Yunbao, XIE Kun, et al. Profile control and flooding effect of alternative injection of Cr3+ polymer gel and water and its mechanism: taking Bohai LD10-1 Oilfield as an example[J]. Fault-Block Oil & Gas Field, 2017, 24(2): 251-254. |
| [13] | 鲍文博, 卢祥国, 刘义刚, 等. 微球/高效驱油剂复合驱油体系增油效果及作用机理[J]. 石油化工, 2019, 48(8): 843-849. |
| [13] | BAO Wenbo, LU Xiangguo, LIU Yigang, et al. Oil increasing effect and mechanism of polymer microspheres/high efficiency oil displacement agent composite flooding system[J]. Petrochemical Technology, 2019, 48(8): 843-849. |
| [14] | 吕春阳, 赵凤兰, 侯吉瑞, 等. 泡沫驱前调剖提高采收率室内实验[J]. 油气地质与采收率, 2015, 22(5): 69-73. |
| [14] | LYU Chunyang, ZHAO Fenglan, HOU Jirui, et al. Laboratory experiment of EOR through profile control before foam flooding[J]. Petroleum Geology and Recovery Efficiency, 2015, 22(5): 69-73. |
| [15] | 卢祥国, 刘义刚, 曹伟佳, 等. 实现分注分采的层内非均质岩心的制作方法及其实验方法: CN107389396B[P]. 2020-09-01. |
| [15] | LU Xiangguo, LIU Yigang, CAO Weijia, et al. Production method and experimental method of in layer heterogeneous core for separate injection and production: CN107389396B[P]. 2020-09-01. |
| [16] | 卢祥国, 张可, 姜维东, 等. 一种人造非均质岩心饱和水的实验方法: CN101074913[P]. 2007-11-21. |
| [16] | LU Xiangguo, ZHANG Ke, JIANG Weidong, et al. An experimental method for saturated water in artificial heterogeneous core: CN 101074913[P]. 2007-11-21. |
/
| 〈 |
|
〉 |