非均质条件下聚合物微球/聚合物深部调驱实验研究

Abstract

Abstract:

Firstly, we evaluated the polymer microspheres and polymer properties, then, studied the migration and plugging properties of the microspheres, polymer and compound system（microspheres + polymer） by microporous membrane filtration device, and implemented the profile control and oil displacement experiments about the systems above by the parallel cores physical simulation displacement apparatus. The results indicated that the polymer microspheres was spherical micron-grade particles with superior dispersibility, and its apparent viscosity, which was much less than that of polymer with the same mass concentration, is close to that of water under the relatively high shear rate. The polymer failed to plug the micropores effectively. The plugging ability of the microspheres was the strongest, followed by the compound system. Under the condition of the strong heterogeneity, the effects of the profile control and the oil displacement of the compound system attained the best and corresponding enhanced oil recovery for high and low permeable cores were respectively 20.86 % and 36.89 %. There was a synergistic effect between the microspheres and polymer for the compound system. That the amount of the microspheres captured and migration property reduced and intensified in the porous medium mainly due to the impact of carrying and lubrication of polymer. Additionally, the influence of mobility ratio control and viscoelastic oil displacement of polymer could effectively improve oil recovery. For the actual reservoirs with relatively strong heterogeneous conditions, it was essential to take the profile control and flooding technology of the microspheres/polymer compound system into account firstly.

Key words: polymer microspheres, polymer, compound system, profile control and oil displacement, heterogeneous condition

CLC Number:

TE357

Pu Wanfen,Zhao Shuai,Mei Zilai,Yang Yang. Experimental study on profile control and oil displacement of polymer microspheres/polymer under heterogeneous conditions[J].Reservoir Evaluation and Development, 2018, 8(3): 61-65.

Figures/Tables 10

Table 1

Table 2

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Fig. 5

Fig. 6

Fig. 7

Table 3

References 15

[1]	刘宝珺, 谢俊, 张金亮 . 我国剩余油技术研究现状与进展[J]. 西北地质, 2004,37(4):1-6.
[2]	Hua Z, Lin M, Dong Z , et al. Study of deep profile control and oil displacement technologies with nanoscale polymer microspheres[J]. Journal of Colloid and Interface Science, 2014,42(4):67-74. doi: 10.1016/j.jcis.2014.03.019 pmid: 24767500
[3]	Yao C, Lei G, Gao X , et al. Controllable preparation, rheology, and plugging property of micron-grade polyacrylamide microspheres as a novel profile control and flooding agent[J]. Journal of Applied Polymer Science, 2013,130(2):1124-1130. doi: 10.1002/app.39283
[4]	孙焕泉, 王涛, 肖建洪 , 等. 新型聚合物微球逐级深部调剖技术[J]. 油气地质与采收率, 2006,13(4):77-79. doi: 10.3969/j.issn.1009-9603.2006.04.024
[5]	Yao C, Lei G, Li L , et al. Selectivity of pore-scale elastic microspheres as a novel profile control and oil displacement agent[J]. Energy & Fuels, 2012,26(8):5092-5101. doi: 10.1021/ef300689c
[6]	胡勇 . 交联聚合物性能及调驱机理研究[D]. 大庆:大庆石油学院, 2005.
[7]	红兵 . 杏北非主力油层聚合物驱适应性及调剖研究[D]. 大庆:大庆石油学院, 2006.
[8]	蒲万芬, 赵帅, 袁成东 , 等. 耐温抗盐聚合物微球/表面活性剂交替段塞调驱实验研究[J]. 油气藏评价与开发, 2016,6(4):69-73.
[9]	王涛, 肖建洪, 孙焕泉 , 等. 聚合物微球的粒径影响因素及封堵特性[J]. 油气地质与采收率, 2006,13(4):80-82.
[10]	Hua Z, Lin M, Guo J , et al. Study on plugging performance of cross-linked polymer microspheres with reservoir pores[J]. Journal of Petroleum Science and Engineering, 2013,105(1):70-75. doi: 10.1016/j.petrol.2013.03.008
[11]	姜维东, 张健, 唐晓东 . 渤海油田驱油用聚合物线团尺寸与岩石孔喉配伍性研究[J]. 油田化学, 2012,29(4):446-451.
[12]	林梅钦, 董朝霞, 韩飞雪 , 等. 核微孔滤膜评价交联聚合物线团大小的研究[J]. 膜科学与技术, 2005,25(2):42-45. doi: 10.3969/j.issn.1007-8924.2005.02.010
[13]	Lin M, Zhang G, Hua Z , et al. Conformation and plugging properties of crosslinked polymer microspheres for profile control[J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2015,477:49-54. doi: 10.1016/j.colsurfa.2015.03.042
[14]	王立军 . 聚合物溶液黏弹性对提高驱油效率的作用[D]. 大庆:大庆石油学院, 2003.
[15]	孙玉丽, 钱晓琳, 吴文辉 . 聚合物驱油技术的研究进展[J]. 精细石油化工进展, 2006,7(2):26-29. doi: 10.3969/j.issn.1009-8348.2006.02.008

离子	浓度	总矿化度
K⁺、Na⁺	9 390	25 036
Ca²⁺	296	25 036
Mg²⁺	15	25 036
SO₄^2-	492	25 036
HCO₃^-	397	25 036
Cl^-	14 446	25 036

岩心编号	长度/ cm	直径/ cm	水测渗透率/ 10^-3μm²	渗透率级差,f	孔隙度, %	含油饱和度,%
1	6.984	3.812	501.32	9.81	18.59	71.19
2	7.054	3.798	51.08	9.81	14.39	52.17
3	6.996	3.814	498.65	9.94	18.61	70.52
4	7.064	3.806	50.16	9.94	14.93	52.46
5	6.998	3.808	500.62	9.86	18.12	70.64
6	7.056	3.826	50.78	9.86	14.24	52.81

实验方案	岩心编号	水驱采收率	化学驱提高采收率	后续水驱提高采收率	总提高采收率
①	1	54.67	4.21	6.93	11.14
①	2	0	0	0	0
②	3	54.75	6.5	7.6	14.1
②	4	0	10	9.83	19.83
③	5	55.03	8.54	12.31	20.85
③	6	0	1.64	35.25	36.89

Experimental study on profile control and oil displacement of polymer microspheres/polymer under heterogeneous conditions

RichHTML

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 10

References 15

Related Articles 15

Metrics

Comments

Recommended 10

[1]	XU Guochen, LIU Xiaowen. Research and application of supporting technologies for improving success rate of water injection well testing [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(6): 773-780.
[2]	HU Depeng. Injection-production features of polymer flooding for horizontal wells and influencing factors of development effects for well groups [J]. Petroleum Reservoir Evaluation and Development, 2022, 12(5): 809-815.
[3]	ZHU Shijie,YE Zhongbin,SHI Leiting,SONG Rui,XU Jiangen,LIU Zhezhi. Application and optimization of rheological model of polymer solution for oil displacement [J]. Petroleum Reservoir Evaluation and Development, 2022, 12(4): 677-683.
[4]	LI Xi,ZHOU Xi,YE Zhongbin,SHU Zheng,CHEN Wenjuan,LU Yixin,QIU Cheng,HE Shurui. Performance enhancement of hydrophobically associative polymer by watersoluble β-cyclodextrin polymer [J]. Petroleum Reservoir Evaluation and Development, 2021, 11(6): 884-889.
[5]	YAN Jianli,YAN Guanshan,GU Zhimeng,BIE Mengjun,ZHANG Zhenjie. Selection of fracturing wells and layers of Bohai J Oil Field in the late stage of high water cut and its application [J]. Petroleum Reservoir Evaluation and Development, 2021, 11(5): 736-743.
[6]	XU Jianping,YUAN Yuanda,XIE Qing,WEI Xuegang,FENG Zhen. Advance in application of molecular dynamics simulation in polymer flooding [J]. Petroleum Reservoir Evaluation and Development, 2021, 11(3): 414-421.
[7]	ZHANG Chuyang,LI Changhong,LU Jun,LI Hong. Challenges and countermeasures of chemical flooding in Henan Oilfield [J]. Reservoir Evaluation and Development, 2020, 10(6): 1-7.
[8]	LU Jun,ZHANG Zhuo,YANG Lisheng,GUO Linlin,ZHANG Xiaojing. Adaptability of heterogeneous flooding system to low-medium permeability reservoirs [J]. Reservoir Evaluation and Development, 2020, 10(6): 17-23.
[9]	LI Huabing,LI Jianting,LI Wenhong,HU Jun,YUAN Guowei,LIANG Yan,ZHANG Xinmin,GUO Yongjun. Synthesis of associative polymer for flooding in low permeability reservoir and its reservoir adaptability [J]. Reservoir Evaluation and Development, 2020, 10(6): 24-32.
[10]	YU Meng,TIE Leilei,LI Xiang,ZHANG Bo,LIU Wenhui,CHANG Zhen. Experiments on adaptability of polymer flooding for medium-high permeability reservoir in Bohai Oilfield [J]. Reservoir Evaluation and Development, 2020, 10(6): 40-45.
[11]	XU Hui,ZHU Yangwen,SONG Min,PANG Xuejun,SUN Xiuzhi. Study on oil displacement performance of temperature sensitive polymer [J]. Reservoir Evaluation and Development, 2020, 10(6): 53-57.
[12]	LIANG Yan,WANG Zenglin,SHI Shubin,GUO Yongjun,HU Jun,LUO Pingya,ZHANG Xinmin,CAO Miao,ZHANG Wei,LIU Yang. Heavy oil displacement-mobility control and heterogeneity adjustment: Associative polymer versus HPAM [J]. Reservoir Evaluation and Development, 2020, 10(6): 65-71.
[13]	ZHANG Lei,JIA Lan,ZHANG Daolian. Developing technical countermeasures in the late stage of polymer flooding in small fault block reservoirs with strong edge water [J]. Reservoir Evaluation and Development, 2020, 10(6): 72-77.
[14]	WANG Zhengxin,ZHANG Lianfeng,YANG Lu,LIU Yanhua,LU Jun,ZHANG Zhuo. Heterogeneous combination flooding system for reservoir after polymer flooding in Shuanghe Oil Filed [J]. Reservoir Evaluation and Development, 2020, 10(6): 78-84.
[15]	CAO Xulong,JI Yanfeng,ZHU Yangwen,ZHAO Fangjian. Research advance and technology outlook of polymer flooding [J]. Reservoir Evaluation and Development, 2020, 10(6): 8-16.