复合型杀菌剂的研究及其在海管中的应用
Research on a compound fungicide and its application in offshore pipelines
董辉 1郁美莹 1冀文雄 1马晓飞 1陈卓琦 1闫冬1
作者信息
- 1. 中海油田服务股份有限公司,天津 300450
- 折叠
摘要
海管内硫酸盐还原菌(SRB)具有较强的抗药性,且H2S含量偏高,给油田生产带来较大的隐患.结合海管工况条件,通过对四羟甲基磷硫酸盐(THPS)、聚六亚甲基胍盐酸盐(PHMG)、羟乙基六氢均三嗪进行复配,采用绝迹稀释法研究复配后杀菌剂对SRB的杀菌性能和抗药性能.结果表明:当THPS∶PHMG∶羟乙基六氢均三嗪质量比为3∶2∶5时,杀菌效果最优;加药质量浓度为100 mg/L,杀菌率达到98%.将复合杀菌剂应用于南海东部油田EP18-1至EP24-2海管,结果表明:现场每周冲击加药为200 mg/L时,SRB由150个/L降低至0.6个/L,H2S由150 mg/L降至20 mg/L左右,可以满足现场生产的技术要求.
Abstract
In order to solve the problem that the sulfate-reducing bacteria(SRB)in offshore oil pipelines have strong drug resistance,resulting in high hydrogen sulfide content in the pipelines,combined with the op-erating conditions of the pipelines,tetrahydroxymethyl phosphosulfate(THPS),polyhexamethylene guanidine hydrochloride(PHMG),and hydroxyethyl hexahydromestriazine were compounded,and the bactericidal per-formance and drug resistance of the compounded bactericide to sulfate-reducing bacteria were studied by ex-tinction dilution method.The results showed that when the mass ratio of THPS,PHMG,hydroxyethyl hexahy-drotriazine was 3∶2∶5,the bactericidal effect was optimal,and the bactericidal rate reached 98%at a mass concentration of 100 mg/L.After application in EP18-1 to EP24-2 offshore pipelines in the eastern oil fields of the South China Sea,the results showed that when the on-site weekly impact dosage was 200 mg/L,the SRB decreased from 150 L-1 to 0.6 L-1,and hydrogen sulfide decreased from 150 mg/L to about 20 mg/L,which could meet the technical requirements of on-site production.
关键词
复合型杀菌剂/硫酸盐还原菌/海管腐蚀/四羟甲基磷硫酸盐/聚六亚甲基胍盐酸盐/羟乙基六氢均三嗪Key words
compound fungicide/sulfate-reducing bacteria(SRB)/corrosion of offshore pipelines/THPS/PHMG/hydroxyethyl hexahydromestriazine引用本文复制引用
出版年
2024
NETL
NSTL
万方数据