Tshwj xeeb heev gel organic bentonite rau drilling kua

Vim yog cov txheej txheem txheej txheej tshwj xeeb ntawm bentonite, nws muaj thaj chaw loj tshwj xeeb, yog li nws muaj zog adsorption, thiab vim muaj cov pab pawg hydrophilic OH-, nws muaj qhov zoo heev dispersion, ncua kev kawm ntawv thiab adhesion nyob rau hauv aqueous tov, thiab qhia tau hais tias zoo heev thixotropy. nyob rau hauv ib tug tej yam concentration ntau.Ntawd yog, thaum muaj kev nplawm sab nraud, cov kua raug tshem tawm zoo li cov kua dej nrog cov dej zoo, thiab tom qab nres stirring, nws yuav npaj nws tus kheej mus rau hauv ib lub gel nrog lub network qauv yam tsis muaj sedimentation thiab dej sib cais.Cov cuab yeej no tshwj xeeb tshaj yog tsim rau kev tsim cov av nkos.Txawm tias nws yog cov roj drilling lossis geological tshawb nrhiav drilling, ntau cov bentonite yog siv los ua cov khoom siv tseem ceeb los npaj cov av nkos los tiv thaiv phab ntsa zoo, nce toj pob zeb txiav, xyaum ua kom txias. bits lwm.

Bentonite yog cov khoom siv tseem ceeb tshaj plaws hauv ntuj siv los kho cov rheology thiab pom cov khoom ntawm cov dej drilling.Bentonite, uas yog siv los ua cov khoom siv dej drilling, feem ntau yog sodium-based bentonite, thiab calcium-based bentonite yuav tsum tau siv tom qab sodification.Kev hloov kho cov organic ntawm bentonite feem ntau yog los ntxig cov organic teeb meem ntawm montmorillonite txheej thiab ua cation hloov ntawm montmorillonite txheej;Nyob rau tib lub sijhawm, kuj tseem muaj ntau pawg hydroxyl thiab cov pab pawg ua haujlwm nyob rau saum npoo ntawm montmorillonite hais thiab lateral fractures ntawm crystals, uas tuaj yeem grafted thiab polymerized nrog alkene monomers nyob rau hauv tej yam kev mob.Nws lub hom phiaj yog los txhim kho nws cov adsorption thiab hydration, txhim khu cov nyhuv lim ntawm bentonite thiab muaj peev xwm ua haujlwm nrog lwm cov tshuaj kho mob.