Hauv cov kua dej hnyiab, PAC hais txog polyanionic cellulose, uas yog cov khoom siv tseem ceeb siv hauv cov av nkos. Drilling av nkos, tseem hu ua cov kua dej, ua lub luag haujlwm tseem ceeb hauv cov txheej txheem drilling ntawm cov roj thiab roj zoo. Nws ua ntau yam ntawm cov hom phiaj, xws li cua txias thiab lubricating laum cov khoom tawg, thauj cuttings rau saum npoo, muab kev ruaj ntseg muab kev ruaj ntseg zoo, thiab tswj hwm zoo siab.
Polyanionic cellulose yog dej-soluble polymer muab tau los ntawm cellulose, lub ntuj polymer pom hauv cov nroj tsuag. PAC raug ntxiv rau kev khiav kua los txhawm rau txhim kho lawv cov rheology thiab kev tswj hwm pom kev.
1. Cov qauv siv tshuaj lom neeg thiab cov khoom ntawm polyanionic cellulose (PAC):
PAC yog hloov kho cellule cellulose polymer nrog anionic tus nqi.
Nws cov qauv tshuaj ua rau nws yooj yim soluble hauv dej, sib sau ua cov tshuaj ruaj khov.
Lub anionic xwm ntawm pac pab txhawb rau nws lub peev xwm los cuam tshuam nrog lwm yam hauv cov kua dej.
2. Txhim kho cov khoom sib dhos:
PAC yog siv los hloov kho cov khoom sib dhos ntawm cov kua dej drilling.
Nws cuam tshuam viscosity, gel lub zog thiab dej tsis tswj.
Tswj rhineology yog qhov tseem ceeb rau kev ua kom zoo thauj khoom thiab tswj kev ruaj ntseg muaj kev ruaj ntseg.
3. Lim tswj:
Ib qho ntawm cov haujlwm tseem ceeb ntawm PAC yog kom tswj tau kua dej los thaum lub sijhawm ua haujlwm.
Nws tsim cov lim dej nyias nyias, lub lim lim dej tsis zoo ntawm cov ntoo kom tsis txhob muaj dej ua kua rau hauv kev tsim.
Qhov no pab tswj cov khoom uas xav tau ntawm cov av nkos thiab tsis muaj kev sib raug zoo.
4. Hangorore stability:
PAC pab txhawb kom muaj kev ruaj khov los ntawm kev tiv thaiv cov kua dej ntau dhau los ntawm kev nkag mus rau hauv kev tsim.
Nws pab txo qis cov teeb meem sib txawv thiab lwm yam teeb meem cuam tshuam nrog kev ruaj khov tsis ruaj khov.
Wellbore stability yog qhov tseem ceeb rau kev ua tiav ntawm kev ua haujlwm drilling.
5. Hom PAC thiab lawv cov ntawv thov:
Cov qhab nia sib txawv ntawm PAC muaj nyob ntawm txoj kev hnyav thiab qib degree hloov chaw.
High viscosity pacs feem ntau yog siv qhov twg siab tshaj plaws rheology tswj yuav tsum muaj.
Rau cov ntawv thov uas cov kua tsis muaj kev txhawj xeeb yog qhov kev txhawj xeeb thawj, tsis muaj viscosity pac yuav nyiam.
6. Kev txiav txim siab ib puag ncig:
PAC feem ntau suav tias yog tus phooj ywg zoo vim tias nws yog biodegradable.
Kev tshuaj xyuas ib puag ncig ib puag ncig tau ua rau lub luag haujlwm siv thiab pov tseg cov dej lim dej muaj pac.
7. Tswjhwm thiab kuaj:
Nruj me ntsis kev ntsuas tau ua tiav kom ntseeg tau tias qhov ua tau zoo ntawm PAC hauv cov kua dej drilling.
Ntau yam kev ntsuam xyuas, suav nrog kev ntsuas nrawm thiab cov kua dej poob, tau ua los ntsuas kev ua tau zoo ntawm Pac-muaj cov av nkos.
8. Cov kev sib tw thiab nrhav:
Txawm tias nws siv thoob plaws, cov nyom xws li thermal stability thiab compatibility nrog lwm cov kev sib ntxiv ntxiv tuaj yeem tshwm sim.
Kev Tshawb Fawb Nruam thiab Kev Tshawb Fawb tau mob siab rau kev daws cov kev cov nyom no thiab txhim kho cov kev ua tau zoo tag nrho ntawm PAC hauv cov kua dej drilling.
Polyanionic cellulose (PAC) yog ib qho tseem ceeb hauv cov tshuaj lim dej drilling thiab ua rau tswj kev tswj hwm, tswj kev tswj hwm thiab muaj kev ruaj ntseg ruaj khov. Nws cov khoom tshwj xeeb ua rau nws tseem ceeb ntxiv hauv cov roj thiab roj drilling kev lag luam, ua lub luag haujlwm tseem ceeb hauv kev ua tiav thiab kev ua tau zoo ntawm kev ua haujlwm.
Lub Sijhawm Post: Jan-22-2024