Daim ntawv thov polyanionic cellulose sodium (PAC)
(1) Daim ntawv thov ntawm PAC hauv cov kua dej drilling
PAC yog qhov zoo tshaj plaws inhibitor thiab kua poob reducer. Cov av nkos tau inhibit cov dispersion thiab nthuav dav ntawm av nplaum thiab shale nyob rau hauv high-ntsev media, yog tswj hwm kev ua kom muaj kev phom sij. Txij li thaum PAC muaj cov tshuaj tiv thaiv zoo dua, kev hloov pauv siab dua li cmc, nws muaj cov dej hluav taws xob ntau dua li cm) thiab cua sov ntxiv) thiab qis dua) ntsuas los ntawm OCMA tus qauv.
(2) Daim ntawv thov ntawm PAC hauv cov dej zoo
Cov dej kho tau zoo npaj nrog PAC yog tsawg hauv cov khoom siv khoom, yog li nws yuav tsis thaiv cov txheej txheej ntawm cov khoom siv ntau lawm; Nws kuj tseem muaj dej ntws tsawg, uas txhais tau tias cov dej uas nkag mus rau cov txheej txheej txheej tau txo qis, thiab kev nkag mus hauv dej yuav txo qis vim yog emulsion blockage.
Cov kua dej ua haujlwm tau npaj nrog PAC muab cov txiaj ntsig zoo uas lwm cov kua ua haujlwm ua haujlwm tsis muaj;
Tiv thaiv cov txheej txheej los ntawm kev puas tsuaj tas mus li;
Muaj peev xwm nqa cov haujlwm huv si thiab txo cov haujlwm ntawm kev saib xyuas zoo;
Muaj lub peev xwm tiv thaiv dej thiab ua kom sib luag thiab tsis tshua ua npuas ncauj;
Tuaj yeem khaws cia lossis hloov ntawm qhov dej, thiab yog qhov pheej yig dua li cov av nkos ua kua;
(3) Lub luag haujlwm ntawm PAC hauv cov kua dej
Cov kua dej ua kua dej uas tau npaj nrog PAC tuaj yeem tiv taus 2% yuav tsum tau ntxiv thaum npaj cov kua dej qeeg) thiab muaj solubility zoo. Nws yog ib qho yooj yim siv, tuaj yeem npaj rau ntawm qhov chaw, muaj kev nrawm nrawm nrawm, thiab muaj cov khoom muaj zog xuab zeb nqa tau. Thaum siv nyob rau hauv qis osmotic siab tsim, nws cov nyhuv me me yog qhov tseem ceeb tshaj.
