Nrog rau txoj kev loj hlob ntawm drilling kua tshuab, asphalt hloov cov khoom yog dav siv nyob rau hauv roj drilling. Feem ntau siv hloov kho asphalt cov neeg ua haujlwm hauv cov roj av suav nrog emulsified asphalt, oxidized asphalt, sulfonated asphalt thiab lwm yam.
Lub emulsified asphalt yog hais txog cov roj-hauv-dej hom (O / W) emulsion tsim nyob rau hauv asphalt aqueous tov uas muaj cov emulsifier thiab lwm yam additives nyob rau hauv lub mechanical stirring quab yuam.
Raws li cov khoom siv hluav taws xob sib txawv ntawm emulsifier, nws tuaj yeem muab faib ua cationic emulsified asphalt, anionic emulsified asphalt, non-ionic emulsified asphalt thiab lwm yam.Emulsified asphalt feem ntau yog siv los tiv thaiv kev sib tsoo thiab ntsaws tus neeg sawv cev hauv drilling engineering los txhim kho qhov zoo. ntawm av nkos ncuav mog qab zib, foob tsim pores thiab kab nrib pleb, thiab txo qhov pom poob ntawm drilling kua.Vim qhov tsis zoo nqi ntawm av nplaum hais, cationic emulsified asphalt yog siv nyob rau hauv roj teb los inhibit av nplaum o.
Tam sim no, ntau cov kev tshawb fawb txog kev ua haujlwm ntawm cationic emulsified asphalt los tiv thaiv kev sib tsoo, txo qis pom thiab inhibit av nplaum o tau ua pov thawj tias muaj qhov zoo los tiv thaiv plam thiab ntsaws cov nyhuv.Thiab tsuas yog 2 feem pua ntawm cov cationic emulsified asphalt tuaj yeem ua tau zoo txo qhov pom poob ntawm cov dej drilling.
Cov nyhuv ntawm qhov sib ntxiv ntawm cationic emulsified asphalt ntawm rheology ntawm drilling kua yog raws li nram no.
(1) Cationic emulsified asphalt tuaj yeem muaj qhov cuam tshuam me me ntawm cov khoom siv rheological ntawm cov dej drilling.Thaum cov concentration qis dua 4 feem pua, qhov pom tseeb viscosity ntawm cov dej drilling fluctuates nrog qhov nce ntawm cov concentration, tab sis qhov sib txawv ntawm qhov sib txawv me me. ntawm cov yas viscosity thiab dynamic shear quab yuam kuj fluctuate nyob rau hauv ib tug me me ntau yam nrog rau qhov nce ntawm concentration.
(2) Thaum kub ntawm 45 degree thiab 75 degree, thiab cov concentration ntawm cationic emulsified asphalt nyob rau hauv cov dej drilling yog qis dua 4 feem pua, txawm tias ntxiv cationic emulsified asphalt los yog tsis, qhov pom tseeb viscosity ntawm drilling kua txo nrog qhov kub thiab txias. Yas viscosity thiab dynamic shear quab yuam hloov zoo heev ntawm qhov kub siab tshaj ntawm 65 degree thiab 75 degree . Nrog rau qhov kub thiab txias, lub zog ntawm cationic emulsified asphalt ntawm lub rheology ntawm drilling kua yuav maj mam txo.
