Polyanionic cellulose LV HV

Polyanionic cellulose (PAC) yog cov dej-soluble polymer uas tau muab los ntawm cellulose. Nws yog dav siv nyob rau hauv cov roj thiab roj kev lag luam raws li ib tug drilling kua additive, qhov twg nws yog siv los tswj cov dej poob, nce viscosity, thiab txhim kho shale inhibition. PAC muaj nyob rau hauv ntau qib, nrog rau qib sib txawv ntawm kev hloov pauv thiab qhov hnyav molecular. Ob qib sib txawv ntawm PAC yog qis viscosity (LV) thiab siab viscosity (HV) PAC.

PAC LV muaj qhov hnyav molecular uas tsis tshua muaj kev hloov pauv. Nws yog siv los ua tus neeg saib xyuas kev pom thiab ua tus hloov kho rheology hauv cov kua dej drilling. LV-PAC muaj cov dej solubility zoo hauv cov dej thiab muaj txiaj ntsig zoo ntawm cov concentrations tsawg. Nws kuj yog siv los ua viscosifier hauv cov cement slurries thiab ua stabilizer hauv emulsions.

PAC HV, ntawm qhov tod tes, muaj qhov hnyav dua molecular thiab qib siab hloov pauv ntau dua li LV-PAC. Nws yog siv los ua thawj viscosifier thiab cov kua dej poob tswj tus neeg sawv cev hauv cov kua dej drilling. HV-PAC kuj tseem siv tau los ua cov viscosifier thib ob ua ke nrog lwm cov polymers. Nws muaj qhov ua siab ntev rau ntsev thiab qhov kub thiab txias, thiab muaj txiaj ntsig zoo ntawm cov ntsiab lus siab.

Ob leeg LV-PAC thiab HV-PAC yog polyanionic, uas txhais tau tias lawv nqa tus nqi tsis zoo. Qhov kev them nqi no ua rau lawv muaj txiaj ntsig zoo ntawm kev tswj cov kua dej los ntawm kev tsim cov ncuav mog qab zib lim ntawm lub qhov dej. Cov nqi tsis zoo kuj ua rau lawv zoo ntawm inhibiting shale hydration thiab dispersion. PAC tseem tuaj yeem txhim kho kev ruaj ntseg zoo los ntawm kev tiv thaiv kev tsiv teb tsaws ntawm cov nplua thiab av nplaum.

Nyob rau hauv xaus, polyanionic cellulose (PAC) yog ib tug ntau yam polymer uas yog siv nyob rau hauv cov roj thiab roj kev lag luam raws li ib tug drilling kua additive. LV-PAC thiab HV-PAC yog ob qib sib txawv ntawm PAC uas siv rau ntau lub hom phiaj. LV-PAC yog siv los ua tus neeg saib xyuas kev pom thiab ua tus hloov kho rheology, thaum HV-PAC yog siv los ua tus thawj viscosifier thiab cov kua dej poob. Ob qib ntawm PAC yog polyanionic thiab muaj txiaj ntsig zoo ntawm kev tswj cov kua dej thiab inhibiting shale hydration thiab dispersion.