PAC (Polyanionic Cellulose)

Polyanionic cellulose (PAC) yog cov dej-soluble polymer muab tau los ntawm cellulose, ib txwm tshwm sim nyob rau hauv cov nroj tsuag. PAC yog dav siv nyob rau hauv ntau yam lag luam, nrog rau cov roj drilling, vim nws cov khoom tshwj xeeb thiab ntau yam. Hauv cov ntsiab lus ntawm cov roj drilling, PAC ua haujlwm rau ntau yam tseem ceeb hauv cov dej drilling:

1. Viscosification: PAC feem ntau yog siv los ua viscosifier hauv cov dej hauv cov dej drilling. Nws pab ua kom lub viscosity ntawm cov kua, txhim kho nws lub peev xwm los ncua thiab thauj cov drilled cuttings thiab lwm yam khib nyiab rau saum npoo. Qhov no pab tswj kev ruaj ntseg zoo thiab tiv thaiv qhov tawg.
2. Fluid Loss Control: PAC tsim ib lub ncuav mog qab zib nyias, impermeable lim rau ntawm phab ntsa ntawm lub qhov dej, txo qhov poob ntawm cov dej drilling mus rau hauv ib puag ncig tsim. Qhov no pab tswj kev ruaj ntseg zoo, tiv thaiv kev tsim kev puas tsuaj, thiab txhim kho kev ua haujlwm zoo drilling.
3. Kev Hloov Kho Rheology: PAC cuam tshuam rau tus cwj pwm ntws thiab cov khoom siv rheological ntawm cov kua dej drilling, ua kom zoo rau kev ncua ntawm cov khib nyiab thiab txo qis. Qhov no ua kom muaj kev ua tau zoo ib yam ntawm cov dej drilling hauv qhov sib txawv ntawm qhov chaw.
4. Kev Tu Qhov Ncauj: Los ntawm kev ua kom cov viscosity thiab nqa lub peev xwm ntawm cov dej drilling, PAC txhim kho qhov kev ua haujlwm ntawm lub qhov, ua kom yooj yim tshem tawm cov drilled cuttings thiab khib nyiab los ntawm lub qhov dej.
5. Kub thiab Salinity Stability: PAC nthuav tawm siab thermal thiab ntsev kam rau ua, tswj nws cov viscosity thiab kev ua haujlwm zoo tshaj qhov kub thiab dej qab ntsev uas tau ntsib hauv kev ua haujlwm drilling.
6. Environmentally Friendly: PAC yog muab los ntawm cov nroj tsuag txuas ntxiv dua tshiab thiab yog biodegradable, ua rau nws tus phooj ywg environmentally thiab haum rau siv nyob rau hauv ib puag ncig rhiab heev drilling cheeb tsam.

PAC muaj nyob rau hauv ntau qib thiab cov lus qhia tshwj xeeb raws li cov kev xav tau ntawm cov dej drilling thiab kev ua haujlwm. Kev tswj xyuas kev ua tau zoo ua kom zoo sib xws thiab ua raws li cov qauv kev lag luam, suav nrog API (American Petroleum Institute) cov lus qhia tshwj xeeb rau cov kua dej ntxiv.

Nyob rau hauv cov ntsiab lus, polyanionic cellulose (PAC) yog ib qho tseem ceeb additive nyob rau hauv cov dej-raws li drilling kua rau cov roj thiab roj kev tshawb fawb, muab viscosification, kua tsis tswj, rheology hloov, thiab lwm yam khoom tseem ceeb uas ua rau kom muaj txiaj ntsig thiab ua tiav kev drilling.