中原油田集输管线腐蚀行为研究

:2003-01-14:,1962,1986,1112(1.,457001;2.,100029):,,,:,pH,(SRB)HCO-3,CO2,::TE985.7:A:1007-015X(2003)03-0028-031,2506(780km),344(169km)70(250km),,,20001546,1.98/kma,204(143km),96(28%),34km,(20%)55(78%),75km(30%),1.1,:2/3,1/3:(1);(2),36,11(30.6%);(3),1.2,(90%95%),570%90%,,:(1),,0.30.4m/s,80%85%;(2),,,,11;(3),,38-,,,21983,272919998,1.9kmCorrosion&ProtectioninPetrochemicalIndustry2003,20(3)28(--),2920003,6,14.19mm/a,2002629640.3m3,,5;79-203,8,70682764235,850m3(85%),11104m3500m3(80%),3104m32729,,,28mm,,,35mm,34,,,GB/T6532-86(91),GB/T264-83(91),1GB/T13609-13610-92,GB11061-89,2SY5329-94,3411234/gL-110.0111.0514.128.78/mgKOHg-10.620.660.680.362CO21234CO2,%1.41.431.391.14/mgm-33.25.86.96.53Na++K+/mgL-1Ca2++Mg2+/mgL-1Cl-/mgL-1SO2-4/mgL-1HCO-3/MgL-1/mgL-112145751423743570629365033CaCl222152942503686884729363787CaCl231959738713346598820058141CaCl2421622538638002155229366855CaCl24/mma-1SRB/mL-1TGB/mL-16Fe/mgL-1CO2/mgL-1H2S/mgL-1pH10.077110210240.2640.386.06.520.060410310232.3439.126.06.530.084610310221.7837.086.06.540.1324101046.2039.096.06.5414,,,,1%CO2,pH,,(57)104mg/L,CaCl2,Cl-(34)104mg/L,pH(6.06.5),CO240mg/L,,(SRB)(103/mL)SRB(),,pH1.5,SRB,pH6,;-1590,40SRB;(15)104mg/L,SRB,3105mg/L,,pH6.06.5,6104mg/L,50,SRBSRB,SO2-4S2-,(Fe9S8,FeS),(),923.,A3,80,7,1,2,3,455A3/mma-11A30.10790.08872A30.09040.09323A30.10260.09674A30.06380.06005,(0.076mm/a),A3,850m3,0.2m/s,,,,,;,,,,,SRB,HCO-3,CO2,SRB5(1),,;(2)(SRB)HCO3-CO2Cl-;(3);(4),,ResearchontheCorrosionBehaviorofOilGatheringPipelineinZhongyuanOilFieldGaoYanan,TangTianlin,LiYupingZhongyuanOilFieldCompany/SINOPEC(Nanyang,Henan457001)ZhaoJingmaoMaterialCollegeofBeijingChemicalEngineeringUniversity(Beijing100029)AbstractThecorrosionoftheoilgatheringpipelinesinZhongyuanOilFieldfeaturedinternalcorrosionandthemostcorrosionfailuresoc2curredatthebottomofthepipelines.Theanalysisofthecompositionandcorrosivityoftheproductiongasandwaterdemonstratedthatthedeliveredliquidcontainedhigherwater.Thelaminarflowoftheliquidresultedinthedirectcontactofpipelinebottomwithwater.AstheproductionwaterwasoflowpHvalueandhighmineralityandcontainedlargeamountofsulfatereductionbacteria(SRB),HCO-3andCO2,theunderdepositcorrosionofthepipelinebottomwastheresult.Theinternalcorrosionprotectionandadditionofbactericidecorrosioninhibitorwereproposedtocontrolthecorrosion.KeywordsZhongyuanOilField,gatheringpipeline,corrosion,sulfatereductionbacteria0320