Polyanionic Cellulose hauv Roj Drilling Fluid

Polyanionic cellulose (PAC) yog cov dej-soluble polymer muab los ntawm cellulose, uas yog dav siv nyob rau hauv cov roj thiab roj kev lag luam raws li ib tug tseem ceeb feem ntawm drilling kua. Nov yog qee qhov haujlwm ntawm PAC hauv cov roj drilling kua:

1. Rheology tswj: PAC tuaj yeem siv los ua tus hloov kho rheology hauv cov kua dej drilling, tswj cov viscosity thiab cov khoom ntws ntawm cov kua. Nws tuaj yeem txo cov viscosity ntawm cov kua dej ntawm qhov qis qis, ua kom yooj yim rau cov twj tso kua mis thiab ncig. Nws tseem tuaj yeem ua kom cov viscosity nce siab ntawm cov nqi shear, txhim kho cov khoom raug tshem tawm ntawm cov kua dej.
2. Kev tswj cov dej tsis zoo: PAC tuaj yeem siv los ua cov kua dej poob ntxiv hauv cov kua dej drilling, txo qhov kev pheej hmoo ntawm cov dej poob rau hauv kev tsim thaum lub sijhawm drilling. Nws tuaj yeem tsim ib lub ncuav mog qab zib nyias thiab impermeable rau ntawm phab ntsa ntawm lub qhov dej, tiv thaiv kev cuam tshuam ntawm cov kua dej hauv lub qhov dej.
3. Shale inhibition: PAC tuaj yeem cuam tshuam qhov o thiab tawg ntawm cov shale formations, tiv thaiv cov destabilization ntawm cov kua dej drilling thiab txo cov kev pheej hmoo ntawm kev tsis zoo ntawm cov dej.
4. Kev kam rau ntsev: PAC ua siab ntev rau qhov chaw muaj ntsev ntau thiab tuaj yeem siv rau hauv cov dej drilling uas muaj cov ntsev ntau ntau thiab lwm yam kab mob.
5. Environmental compatibility: PAC yog biodegradable thiab ib puag ncig tus phooj ywg, ua rau nws muaj kev nyab xeeb thiab ruaj khov kev xaiv rau drilling kua.

Zuag qhia tag nrho, cov khoom ua haujlwm ntawm PAC ua rau nws muaj txiaj ntsig zoo hauv cov roj drilling kua, txhim kho lawv cov kev ua tau zoo thiab txhim kho lawv cov txiaj ntsig. PAC feem ntau yog siv rau hauv ntau yam kev siv drilling, xws li dej-raws li av nkos, brine-raws li av nkos, thiab cov kua ua tiav.