搜索
23Vol.2No.320026TheChineseJournalofProcessEngineeringJune2002COD,12,2(1.1000852.065007)6COD6COD(SMP)(NH4−HPAN)(GLA)(SSA)(PAC−141)(FPK).3CODCOD.Zeta−50mVTOCZeta−50mVTOCZetaTOC.6SMPZetaTOC.X783A1009−606X(2002)03−0283−061[1,2].[3].[4,5]pH..CODCOD.6,COD.COD3COD.COD.22.161.4%pH101030kg/m3.31.2001−12−072002−02−05(1964−).284213Table1ThreedrillingfluidformulationsusedinJidongOilFieldandtheirmainfeaturesMainwaterqualityDrillingfluidMaincompositionWellsiteColorCl−(mg/L)COD(mg/L)Oil(mg/L)Potassium-ammoniumpolymerdrillingfluidWeicountysoil4%+FPK0.3%+HPAN0.8%+HMP0.6%+SMP0.5%M6-1EastBuff2111026500.40SmallcationdrillingfluidWeicountysoil4%+QW-10.4%+GLA0.6%+HPAN0.6%+SMP0.5%M6-1westBuff2060121400.42PAC−141polymerdrillingfluidWeicountysoil4%+PAC−1410.2%+HPAN0.6%+SMP0.5%+FT−3421.0%M109-1Dustcolor9160101000.43Note:HMPstandsforsulfonatedtanningextract,FT-342forsulfonatedpitch,QW-1forlubricant.Weicountysoilisakindofsubstrateofrillingmud.dSiCOHNanCH2CHCNxCH2CHCONH2yCH2CHCOONH4z(a)Siliconstabilizationagent(SSA)(b)NH4-HPAN(c)Acylonitrile-acrylamide-potassium(FPK)(d)Sulfonatedphenolicresin(SMP)CH2OHOHCH2SO3NanzCH2CHy2CONHCH2CHxCNCH2CHCOOKxyCONH2CH2CHCH2CHCH2CHCOONaCOSO3Na(e)PAC−1411Fig.1Themolecularstructureformulaofseveraldrillingmudadditives2.2[6,7]CODCr.()[8]..pH4.721000mg/L[9].G64−3COD2080mg/LTOC595mg/LpH7.78SSA1230mg/L.2.3CODCrCOD()[10]TOCTOC−500()BOD5OXITOPBOD5()ZetaZetaPlus(BrookhavenInstrumentsCorporation,USA).3COD28533.1CODCr67CODCr.CODCr(2)CODCr().FPKy=6371x−675R2=0.9334NH4−HPANy=19198x−4266R2=0.9982SMPy=10984x+983R2=0.9868PAC−141y=5174x+236R2=0.9938GLAy=6789x+900R2=0.9864SSAy=1422x−16R2=0.9484.x(%,ϕ)yCOD(mg/L)R.01234550001000015000200002500030000GLASSACODcr(mg/L)Additiveconcentration(%)0.00.20.40.60.81.00200040006000800010000SMPNH4-HPANPAC-141FPKCODcr(mg/L)Additiveconcentration(%)2CODcrFig.2RelationshipbetweenadditivedosesandcorrespondingCODcrCOD6COD2.6CODSMPNH4−HPANGLAPAC−141FPK.CODCOD.2CODTable2CODvaluescalculatedaccordingtothecorrelationsAdditivesConcentration(%)Calculatedvalue(mg/L)OrderofcontributiontoCODofadditivesFPK0.525116NH4−HPAN0.553332SMP0.564751PAC−1410.528235GLA0.542943SSA3.0425043.23COD2000m0.22m3/m2000m0.14m3/m.33.3CODCOD2862.COD.33CODTable3ComparisonbetweenthecalculatedandmeasuredCODofdrillingwastewaterWellsiteDillingfluidsystemTotalvolumeofdrillingwasterwaterafterfinished(m3)Wastewatervolumewhensampling(m3)TimesofdilutionCalculatedCOD(mg/L)MeasuredCOD(mg/L)M6−1eastPotassium-ammoniumpolymerdrillingfluid350350010264102650M6−1westSmallcationdrillingfluid500500010238092140M109−1PAC−141polymerdrillingfluid4509002.021511101003.34TOC,COD,BODTOC.BODCOD...GLANH4−HPANTOC90%PAC−141FPKSMP.6TOC(236mg/L)(260.5mg/L).5.6FPKPAC−141GLATOC33TOCSMP.4Table4Coagulationeffectsofsixdrillingfluidadditives(inpurewater)AdditivesConcentration()TOC(mg/L)COD(mg/L)BOD5(mg/L)TOCaftercoagulation(mg/L)Removalrate(%)NH4−HPAN0.5034143.5539.05.07.594.8SMP0.5015136.5642.35.030.477.7FPK0.5043108.0251.65.075.230.4PAC−1410.503189.5281.76.590.1−GLA0.5063112.5428.25.07.793.2SSA3.0000130.0429.55.049.661.9Themixture1)720.0−−23667.2Note:1)6additivesmixedaccordingthespecifiedproportion.5Table5CoagulationeffectsofmixingdrillingwastewaterwitharespectiveadditiveatspecifiedconcentrationTOCaftercoagulationtreatmentAdditivesConcentration()TOC(mg/L)Determinedvalue(mg/L)Calculatedvalue1)(mg/L)Relativedeviation(%)NH4-HPAN0.5034738.553.048.09.4SMP0.5015731.593.570.924.2FPK0.5043703.557.0115.7−103PAC-1410.5031684.574.0130.0−75.7GLA0.5063707.540.048.2−20.5SSA3.0000725.081.670.313.8Drillingwastewater595.040.5−−Note:1)TheresidualTOCofthedrillingadditivesinthedistilledwaterissameasthatinthewastewater.3COD2871000mg/LZeta+53.18mVZeta().534(SMP,NH4−HPANSSA)Zeta−50mVTOC(GLA,PAC−141FPK)Zeta−50mVTOC.3.FPK(103%)Zeta(−60.8mV).TOC3SMP(24.2%)Zeta(−30.66mV)SMPSMP.0123450-20-40-60-80PreparedbydistilledwaterPreparedbywastewaterWastewaterZetapotential(mV)NH4-HPANSMPFPKPAC-141GLASSA6-65-60-55-50-45-40-35-30-120-100-80-60-40-20020SMPNH4-HPANSSAGLAPAC-141FPKRelativedeviation(%)Zetapotential(mV)34ZetaZetaFig.3ZetapotentialsoffluidadditivesindistilledFig.4RelationshipbetweenZetapotentialsoffluidaddi-wateranddrillingwastewatertivesindrillingwastewaterandrelativedeviation46COD.(1)6CODSMPNH4−HPANGLAPAC−141FPK.COD.(2)3CODCODCOD.(3)6PAC−141FPKSMPGLANH4−HPAN.Zeta−50mVTOCZeta−50mVTOCSMP.2882:[1].[J].,1992,2(4):13−16.[2].[J].,1992,2(1):24−27.[3].[J].,1992,2(2):15−17.[4].[M].1972.11−16.[5].[M].1981.231−244.[6].[J].,1990,2(2):14−21.[7].COD[J].1998,8(4):6−9.[8].COD[J].,1991,20(4):7−10.[9].COD[J].,1994,23(2):128−130.[10].[M].1998.354−357.EvaluationofContributionofDrillingAdditivestotheCODofDrillingWastewaterandTheirCoagulationEffectsYANGMin1,WANGYan-ming1,2,WANGDong-sheng1,ZHOUXiang-yu2,GAOYing-xin1,2,JIAWan-jin2(1.StateKeyLab.EnvironmentalAquaticChem.,ResearchCenterforEco-environ.Sci.,CAS,Beijing100085;2.TheEnvironmentalCenterofPetroChina,Langfang,Heibei065007,China)Abstract:TheCODcontributionofsixdrillingmudadditivesusedintheJidongOilFieldweredeterminedandcorrelated.TheCODc