Nyob rau hauv cov kev ua roj drilling, kev xaiv ntawm cov tshuaj sib ntxiv tshuaj ntxiv muaj qhov tseem ceeb ntawm kev ua kua ntawm cov kua dej drilling. Ntawm lawv, Roj Drilling qib sodium carboxymethyl cellulose (PAC) thiab polyanionic cellulose (PAC)
Roj Drilling qib CMC, raws li cov molecular siab polymer, muaj cov thickening zoo, kev ncua, emulsification thiab stability cuam tshuam. Nyob rau hauv cov roj drilling cov kua, nws tuaj yeem ua kom zoo ua rau cov viscosity thiab shear zog ntawm cov pob zeb nqa khoom thiab txo qhov kev pheej hmoo ntawm phab ntsa zoo. In addition, CMC can also reduce the filtration loss of drilling fluids, maintain the stability of well walls, and improve drilling efficiency. Nws cov tshuaj tshwj xeeb tuaj yeem pab CMC kom muaj peev xwm tswj tau ruaj khov nyob rau hauv cov kub thiab kev kub siab drilling ib puag ncig.
Raws li kev ua kom muaj zog tuab thiab rheology kho kom zoo, pac tseem dav siv nyob rau hauv roj drilling kua. PAC tsis tuaj yeem ua rau muaj kev cuam tshuam txog kev ua kua dej drilling, tab sis kuj txhim kho fehology ntawm drilling fluing fluidity ntawm txawv shear tus nqi. Qhov no ua rau cov kua dej drilling kom zoo dua li siv cov kev txiav zoo dua thaum lub sijhawm khiav dej thiab txo qhov tshwm sim ntawm cov xwm txheej nyuaj. Tsis tas li ntawd, PAC kuj muaj cov ntsev zoo thiab calcium tsis kam, thiab tuaj yeem ua si lub luag haujlwm ruaj khov hauv cov chaw nyob hauv av nyuaj.
Txoj kev thov dav ntawm cov roj drilling qib CMC thiab PAC tsis yog siv cov nuj nqis drilling, tab sis kuj tau txais kev nyab xeeb roj rau kev txhim kho kev lag luam roj. Raws li kev tshawb nrhiav roj thiab kev tsim kho cov kev tsim kho ntawm cov kev ua kom muaj kev ua kua thiab ntau dua, thiab cov ntawv thov kev cia siab ntawm CMC thiab PAC yuav nthuav dav.
Yav tom ntej, nrog kev nce qib nruam kev tshawb fawb thiab thev naus laus zis, ob lub luag haujlwm siv tshuaj ntsuab no yuav ua lub luag haujlwm tseem ceeb hauv kev ua haujlwm roj.
