Kev sib piv ntawm cov kua dej poob Resistance Property ntawm Polyanionic cellulose Ua los ntawm cov hmoov nplej txheej txheem thiab Slurry txheej txheem

Polyanionic cellulose (PAC) yog cov dej-soluble polymer muab tau los ntawm cellulose thiab feem ntau yog siv los ua cov dej tsis zoo tswj additive nyob rau hauv drilling kua siv nyob rau hauv cov roj thiab roj kev tshawb fawb. Ob txoj hauv kev tseem ceeb ntawm kev tsim PAC yog cov txheej txheem ua khob noom cookie thiab cov txheej txheem slurry. Nov yog qhov kev sib piv ntawm cov kua dej tsis ua haujlwm ntawm PAC uas tsim los ntawm ob txheej txheem no:

1. Txheej txheem hmoov nplej:
   • Txoj kev tsim khoom: Hauv cov txheej txheem ua khob noom cookie, PAC yog tsim los ntawm reacting cellulose nrog ib tug alkali, xws li sodium hydroxide, los tsim ib tug alkaline cellulose mov paj. Cov khob noom cookie no ces reacted nrog chloroacetic acid los qhia carboxymethyl pawg mus rau cellulose qaum, ua rau PAC.
   • Particle Loj: PAC tsim los ntawm cov txheej txheem ua khob noom cookie feem ntau muaj qhov loj me me thiab tej zaum yuav muaj cov agglomerates los yog aggregates ntawm PAC hais.
   • Fluid Poob Resistance: PAC ua los ntawm cov txheej txheem ua khob noom cookie feem ntau nthuav tawm cov dej tsis zoo hauv cov dej drilling. Txawm li cas los xij, qhov loj me me thiab qhov muaj peev xwm ntawm cov agglomerates tuaj yeem ua rau qeeb hydration thiab dispersion nyob rau hauv cov dej-raws li drilling kua, uas tuaj yeem cuam tshuam cov dej tsis zoo, tshwj xeeb tshaj yog nyob rau hauv high-temperature thiab high-pressure tej yam kev mob.
2. Txheej txheem Slurry:
   • Txoj kev tsim khoom: Hauv cov txheej txheem slurry, cellulose yog thawj zaug tawg hauv dej los tsim cov slurry, uas yog tom qab ntawd rov ua dua nrog sodium hydroxide thiab chloroacetic acid los tsim PAC ncaj qha rau hauv cov tshuaj.
   • Particle Loj: PAC tsim los ntawm cov txheej txheem slurry feem ntau muaj qhov me me me me thiab muaj ntau qhov sib txawv hauv cov tshuaj piv rau PAC ua los ntawm cov txheej txheem ua khob noom cookie.
   • Fluid Poob Resistance: PAC ua los ntawm cov txheej txheem slurry zoo li ua kom pom cov dej tsis zoo hauv cov dej drilling. Qhov me me me me thiab qhov sib txawv tsis sib xws ua rau muaj dej nrawm dua thiab tawg hauv cov dej hauv cov dej drilling, ua rau kev txhim kho cov dej tsis zoo, tshwj xeeb tshaj yog nyob rau hauv kev nyuaj drilling.

ob qho tib si PAC ua los ntawm cov txheej txheem ua khob noom cookie thiab PAC ua los ntawm cov txheej txheem slurry tuaj yeem muab cov dej tsis zoo hauv cov dej drilling. Txawm li cas los xij, PAC ua los ntawm cov txheej txheem slurry tuaj yeem muab qee yam zoo, xws li kev ua kom dej sai dua thiab tawg, ua rau kev txhim kho cov dej tsis zoo, tshwj xeeb tshaj yog nyob rau hauv high-temperature thiab high-pressure drilling ib puag ncig. Thaum kawg, kev xaiv ntawm ob txoj kev tsim khoom no tuaj yeem nyob ntawm qhov kev xav tau tshwj xeeb, kev xav txog tus nqi, thiab lwm yam cuam tshuam rau daim ntawv thov dej drilling.