Study on the Damage of Salt⁃Resistant Polymer Flooding Sewage Reinjection to Reservoir

doi:10.3969/j.issn.1006-396X.2021.04.006

Abstract

Abstract:

14 kinds of sewage with different water quality were used for the indoor fluidity experiments. The adverse impact degree of different sewage to the cores was classified into high, middle and low, according to the the permeability loss rate. The results show that the factors affecting the permeability loss degree of cores are as followes: suspended sediment concentration > oil content > salt?resistant polymer concentration > common polymer concentration. Sewage with higher residual salt?resistant polymer concentration has strong plugging capacity. For the cores with air permeability of 200 mD, when suspended sediment concentration is 10 mg/L and oil content is 10 mg/L, the polymer concentration of salt?resistant polymer flooding sewage should be controlled below 200 mg/L, while the polymer concentration of common polymer flooding sewage should be controlled below 300 mg/L, in order to ensure the low degree of the damage to reservoir caused by sewage reinjection, The results of this work has a positive effect on the reservoir protection and water quality index of salt?resistant polymer flooding sewage reinjection.

Key words: Salt?resistant polymer, Sewage reinjection, Permeability loss, Damage, Reservoir protection

摘要：

采用14种不同水质污水进行了室内流动性实验，利用岩心的渗透率损失率将各污水回注的伤害程度划分为低、中等、高。结果表明，影响岩心渗透率损失程度的因素排序为：悬浮物质量浓度>油质量浓度>抗盐聚合物质量浓度>普通聚合物质量浓度。残余抗盐聚合物质量浓度较高的污水具有更强的堵塞能力。针对空气渗透率为200 mD的岩心，低伤害程度回注的要求下，当悬浮物和油的质量浓度均为10 mg/L时，抗盐聚合物驱污水需控制聚合物质量浓度在200 mg/L以下，而普通聚合物驱污水需控制聚合物质量浓度在300 mg/L以下。研究结果对抗盐聚合物驱污水回注水质处理指标和油层保护具有积极作用。

关键词: 抗盐聚合物, 污水回注, 渗透率损失, 伤害, 油层保护

CLC Number:

TE357.46

Bin Huang, Likai Huang, Cheng Fu, Jing Zhao, Chang Ding, Tingwei Zhang. Study on the Damage of Salt⁃Resistant Polymer Flooding Sewage Reinjection to Reservoir[J]. Journal of Petrochemical Universities, 2021, 34(4): 33-38.

黄斌, 黄立凯, 傅程, 赵晶, 丁畅, 张庭玮. 抗盐聚合物驱污水回注对油层的伤害研究[J]. 石油化工高等学校学报, 2021, 34(4): 33-38.

0
/ / Recommend

Add to citation manager EndNote|Ris|BibTeX

URL: https://journal.lnpu.edu.cn/syhg/EN/10.3969/j.issn.1006-396X.2021.04.006

https://journal.lnpu.edu.cn/syhg/EN/Y2021/V34/I4/33

Figures/Tables 8

Fig.1 Indoor flow test equipment

Table 1 Evaluation of reservoir damage

渗透率损失率/%	油层伤害程度
θ≤30	低
30<θ≤50	中等
θ>50	高

Fig.2 The relationship between particle size of suspended solids and pore?throat diameter

Fig.3 The relationship between suspended solids concentration and permeability loss rate

Fig.4 The relationship between oil content and permeability loss rate

Fig.5 Molecular morphology of residual polymer

Fig.6 The relationship between salt?resistant polymer concentration and permeability loss rate

Fig.7 The relationship between types of polymers and permeability loss rate

References 20

1	冯春，孙灵辉，萧汉敏，等.回注污水水质对油藏储层渗透率影响规律［J］.当代化工，2019，48（4）：762⁃767.
	Feng C，Sun L H，Xiao H M，et al. Influence of reinjected sewage quality on the permeability of reservoir［J］.Contemporary Chemical Industry， 2019，48（4）：762⁃767.
2	侯傲.油田污水回注处理现状与展望［J］.工业用水与废水，2007，38（3）：9⁃12.
	Hou A. Current status and prospect of reinjection treatment of oilfield wastewater［J］. Industrial Water & Wastewater， 2007，38（3）：9⁃12.
3	周孙彪，康宜华，牛斌.油田采油污水回注处理技术回顾与展望［J］.石油机械，2002，30（12）：38⁃41.
	Zhou S B，Kang Y H，Niu B. Review of oilfield wastewater treatment technique［J］.China Petroleum Machinery， 2002，30（12）：38⁃41.
4	曹博，杨遵旭，付凡，等.陕北油田水质配伍性研究［J］.石油化工高等学校学报，2016，29（6）：27⁃31.
	Cao B，Yang Z X，Fu F，et al.Compatibility of water injection operation in Shanbei oilfield［J］.Journal of Petrochemical Universities， 2016，29（6）：27⁃31.
5	孙刚，李勃.大庆油田抗盐聚合物研制与应用［J］.大庆石油地质与开发，2019，38（5）：265⁃271.
	Sun G，Li B. Preparation and application of the salt⁃resistant polymer in Daqing oilfield［J］.Petroleum Geology & Oilfield Development in Daqing， 2019，38（5）：265⁃271.
6	李长庆，张夏泽，孙刚.中、低分子抗盐聚合物的评价研究［J］.大庆石油地质与开发，2005，24（4）：72⁃74.
	Li C Q，Zhang X Z，Sun G. Evaluation of salt⁃resistance polymer with medium⁃low molecular weight［J］.Petroleum Geology & Oilfield Development in Daqing， 2005，24（4）：72⁃74.
7	王桂芹，陈涛，张蕊，等.新型耐温抗盐疏水缔合聚合物的制备及性能［J］.石油化工，2020，49（7）：657⁃663.
	Wang G Q，Chen T，Zhang R， et al. Preparation and performance of a novel hydrophobic associating polymer with excellent temperature⁃resistance and salt⁃tolerance［J］.Petrochemical Technology， 2020，49（7）：657⁃663.
8	于艳华，刘晓冬，徐景祯.聚合物驱产出水对油层损害的主要物质的确定［J］.应用基础与工程科学学报，2001，9（1）：17⁃22.
	Yu Y H，Liu X D，Xu J Z. Analysis of contaminants in water produced from formation with polymer flooding and its possibility for recycling［J］.Journal of Basic Science and Engineering，2001，9（1）：17⁃22.
9	Van Oort E，Van Velzen JFG，Leorlooijer K.Impairmenr by suspended solids invasion：Testing and prediction［C］.SPE23822，1993.
10	罗莉涛，廖广志，刘卫东，等.安塞低渗透油藏注入水中悬浮油滴堵塞规律［J］.科学技术与工程，2015，15（12）：59⁃63.
	Luo L T，Liao G Z，Liu W D，et al. The laws of plugging to ansai low permeability reservoir caused by suspended oil⁃drop in injected water［J］.Science Technology and Engineering， 2015，15（12）：59⁃63.
11	刘晓冬，吕靖，于舒杰，等.回注聚合物驱产出水的油层污染机理［J］.大庆石油学院学报，2001，25（4）：8⁃10.
	Liu X D，Lü J，Yu S J，et al. Analysis of contaminants in water produced from formation with polymer flooding and the mechanism of their damage to formation［J］.Journal of Northeast Petroleum University，2001，25（4）：8⁃10.
12	Bedrikovetsky P， Mackay E J， Rosario F F， et al. Injectivity impairment due to sulfate scaling during PWRI： Analytical model［C］//SPE international oilfield scale symposium.Aberdeen，UK：［S.L.］，2006.
13	Zeinijahromi A，Nguyen P T，Bedrikovetsky P G.Taking advantage of fines⁃migration⁃induced formation damage for improved waterflooding（reservoir simulation using polymer flood option）［C］//SPE european formation damage conference. Noordwijk， the Netherlands：［S.L.］，2011.
14	斯容，卢瑜林，邓学峰，等.渭北油田回注水中悬浮物和油含量指标及控制技术［J］.油气藏评价与开发，2016，6（2）：51⁃53.
	Si R，Lu Y L，Deng X F，et al.Content indicators and control technology of suspended solid and oil reinjection water in Weibei oilfield［J］.Reservoir Evaluation and Development， 2016，6（2）：51⁃53.
15	殷茵，刘大锰，黄金凤，等.油层回注含聚合物污水的适应性［J］.现代地质，2006，20（4）：641⁃646.
	Yin Y，Liu D M，Huang J F，et al.Adaptability of reservoir for the re⁃injecting polymer⁃bearing sewage［J］.Geoscience， 2006，20（4）：641⁃646.
16	唐海，赵金洲，李军，等.注入水水质对储层适应程度评价方法研究［J］.大庆石油地质与开发，2003，22（6）：33⁃35.
	Tang H，Zhao J Z，Li J，et al. Study on evaluation method of reservoir adaptation degree of injected water quality［J］.Petroleum Geology & Oilfield Development in Daqing， 2003，22（6）：33⁃35.
17	Barkman J H， Davidson D H.Measuring water quality and predicting well impairment［J］.Journal of Petroleum Technology， 1972，24（7）： 865⁃873.
18	贾忠伟，杨清彦，张江，等.大庆油田低渗透油层注水伤害实验研究［J］.大庆石油地质与开发，2007，26（1）：72⁃75.
	Jia Z W，Yang Q Y，Zhang J，et al.Research on damage test of water injection in low permeability reservoir of daqing oilfield［J］.Petroleum Geology & Oilfield Development in Daqing，2007，26（1）：72⁃75.
19	周丛丛，崔长玉，郭松林.聚合物驱生产井流压特征规律分析及影响因素研究［J］.特种油气藏,2019,26（5）:112⁃117.
	Zhou C C,Cui C Y,Guo S L.Flowing pressure performance analysis and its influencing factors in polymer flooding production well［J］.Special oil & Gas Reservoirs,2019,26（5）:112⁃117.
20	冯于恬，陈华兴，刘义刚，等.海上油田含聚合物污水水质对储层保护技术的影响［J］.油田化学，2018，35（4）：702⁃708.
	Feng Y T，Chen H X，Liu Y G， et al.Effect of polymer⁃contained sewage quality on reservoir protection in offshore oilfield［J］.Oilfield Chemistry， 2018，35（4）：702⁃708.

[1]	Wenhui Dang, Hong Zhang, Cheng Ye, Nan Zhang, Yadong Li. Research on Damage Prevention Drilling Fluid of Hutubi Built in Low Pressure and Water⁃Sensitive Reservoir [J]. Journal of Petrochemical Universities, 2022, 35(1): 75-80.
[2]	Chen Lei, Bao Wenhui, Guo Bumin, Li Meng, Sun Houtai, Zhao Jian. The Performance of an Associative Seawater Based Fracturing Fluid with Ultra⁃High Temperature [J]. Journal of Petrochemical Universities, 2020, 33(4): 57-61.
[3]	Chen Qing, Cao Weijia, Tian Zhongyuan, Lu Xiangguo, Yan Dong. Influence of Material Coated in Self⁃Suspending Proppant on Reservoir Permeability [J]. Journal of Petrochemical Universities, 2020, 33(1): 42-47.
[4]	Zhao Fajun,Tian Zhexi,Zhang Yufei,Zhang Xinyu,An Yi. Water Locking Damage Evaluation and Unlocking of Condensate Gas Reservoir in Jilin Oilfield [J]. Journal of Petrochemical Universities, 2018, 31(02): 53-60.
[5]	Qiao Wenbo,Li Haitao,Zhang Futian,et al. Prediction of Formation Damage of Water Injection Well Based on Orthogonal Design and Statistical Analysis [J]. Journal of Petrochemical Universities, 2015, 28(6): 44-48.
[6]	Dong Bingqiang， Qiu Zhengsong， Wang Weiji，et al. Preparation and Performance of Novel Reservoir Protection Agent SDME2 Used for Shale Gas Reservoirs [J]. Journal of Petrochemical Universities, 2015, 28(6): 61-65.
[7]	Liang Yukai, Zhao Nan, Chen Xiao, Jia Hui. Application of Oil Based Mud Damage Removal Technology in WZAAX1 Well [J]. Journal of Petrochemical Universities, 2015, 28(5): 65-68.
[8]	Wang Jianzhong,Hong Yafei,Sun Zhigang. The Research of Low Permeability Fractured  Reservoir Damage and Protection [J]. Journal of Petrochemical Universities, 2015, 28(3): 66-69.
[9]	Shao Xinmin, Qu Ceji, Zhao Nixia,et al. Protection Technology of ZhuZhaizi Oilfield Drilling Fluid Reservoir  with Low Pressure and Low Permeability [J]. Journal of Petrochemical Universities, 2014, 27(3): 57-63.
[10]	Zhang Mei1, Li Haitao1, Shan Jincheng,et al. Compatibility between the Injection Water and  Formation Water in Bozhong 342/4 Oilfield [J]. Journal of Petrochemical Universities, 2014, 27(1): 29-34.
[11]	Li Shibin, Li Lei, Zhang Ligang. The Numerical Simulation Analysis of Crack Propagation  Law under Riverfrac Treatment MultiField Coupling [J]. Journal of Petrochemical Universities, 2014, 27(1): 42-47.
[12]	Ding Wei,Wang Jiao,Xie Jianbo. New Type Surfactant in Low Permeability Reservoirs of Daqing Oilfield [J]. Journal of Petrochemical Universities, 2014, 27(1): 71-74.
[13]	LI Jinhe,HUANG Chongjun,XI Zhongjun,LIU Guohao,LIU Xun. Ｔhe Prediction Model of Damage Fatigue Life of String in Gas Drilling [J]. Journal of Petrochemical Universities, 2013, 26(5): 67-70.
[14]	QIU Lijie,ZHANG Guofu,WANG Wenguang. The Effects of Ultrasonic Oscillation on the Form of Carbon Nanotubes [J]. Journal of Petrochemical Universities, 2013, 26(3): 57-61.
[15]	ZHANG Hong. Research of Reservoir Protection Technology for Low Permeability  and Medium to Strong Water Sensitivity Oil Reservoir： [J]. Journal of Petrochemical Universities, 2013, 26(2): 44-46.