低含聚采出水中杀菌剂冲击和连续投加对比试验
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2020-03-18 12:12:31
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技木纵麓杨风斌等:低含聚采出水中杀菌剂冲击和连续投加对比试验低含聚采出水中杀菌剂冲击和连续投加对比试验杨风斌王勇篙秋军’刘相霞摘要:硫酸盐还原菌是引发管路腐蚀的主要原因之一,使用杀菌剂是目前控制硫酸盐还原茵腐蚀最常用的方法。针对油田含聚污水水质特性,选用的杀菌剂分别为聚季铵盐型与双聚季铵盐型,两种药剂交替使用;缓蚀剂为阳离子咪唑啉型。通过对污水处理前后硫酸盐还原菌浓度的测定,试验了杀菌剂投加方式对杀菌效果的影响。结合室内研究和现场试验,对冲击投加和连续投加两种方式下的杀菌效果进行了对比分析,确定了适应含聚污水处理的杀茵技术方案,即连续投加杀茵剂60rag/L+缓蚀剂20mg/L。连续投加杀菌荆可长期有效地控制污水中硫酸盐还原菌,使其浓度由6001mL降低为25/mL以下,腐蚀速率由0.130mm/d降低为0.040mm/d。关键词:含聚污水;SRB;杀菌剂;冲击投加;连续投加;对比试验Doi:10.3969;~.issn.1006-6896.2016.4.033ContrastTestforImpactandContinuousDosingofBactericidesinLowPolyProducedWaterYangFengbin,WangYong,GaoQiujun,LiuXiangxiaAbstract:SulfatereducingbacteriaisthemaincauseoftheoiIpipelinecorrosion,theuseoffungicidesisthemostcommon【vmethodtocontroIthecorrosionthatcausedbysulfatere—ducingbacteria.Inthelightoftreatingoilfieldpolymerbearingwastewater,firstlyweshouldanalysisthewaterqualityinordertodeterminethecharacteristicoftheoilfieldsewage;onsuchabasis,tokiIlthebacteria,alternatingbactericidebetweenpo[yquaternaryammoniumsaltandBISquaternaryammoniUmsalt,theinhibitorisimidazoletypecationiC.Bymeasur-ingtheconcentrationofSUIf'ate-reducingbacteriabeforeandafteroilfieldsewagetreatment,westudytheefectofbactericidefillingmodeongermicida[efficacy.combinedwithlabora—toryandfieldtests,thegermicidalet~cacyofthetwomodesoftheimpactfillingandcontin—UOUSfillingbactericidewascamparedandanalyzed.Carryingoutcontinuousfillingtestformuhipleconcentrations.theidentifiedbactericidaltechno[ogyprogramiscontinUOUSfillingbactericide60mg/L+inhibitor20mg/L.Theresultsshowthatthecontentofsulfatereduc—ingbacteriainoilfieldsewageiscontrottedtongtermandeficientlybycontinuousfillingbac——tericide.whichthebacterialconcentrationdecreasedfram600/mLtoUnder25/mL,andthecorros;0nratedecreasedfrom0.13Omm/atO0.040mm/a.Keywords:polymer-bearingwastewater;SP..B;bactericide;impactfilling;continUOUSfilling:laboratoryandfieldtests在石油开采过程中,微生物的存在是引发管路腐蚀的主要原因之一,其中硫酸盐还原菌(SRB)造成的腐蚀危害最为严重。SRB大量繁殖会加剧生产设备腐蚀,同时增加注入水中的悬浮物含量,造成水质不合格,导致管路结垢或堵塞,使注水压力升高,进而影响油田开发。在实际生产过程中冲击投加杀菌剂,可以短时间内控制SRB细菌浓度,但不能持久。本文通过对杀菌剂投加
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