Polyanionic Cellulose

Polyanionic cellulose (PAC) yog cov dej-soluble cellulose derivative uas pom tau siv dav hauv ntau yam kev lag luam, tshwj xeeb hauv kev lag luam roj thiab roj. Ntawm no yog cov ntsiab lus ntawm polyanionic cellulose:

1. Muaj pes tsawg leeg: Polyanionic cellulose yog muab los ntawm cellulose, ib tug natural polymer pom nyob rau hauv cov nroj tsuag, los ntawm kev hloov tshuaj. Carboxymethyl pawg tau nkag mus rau hauv cov pob txha cellulose, muab nws anionic (tsis zoo them) cov khoom.

2. Kev ua haujlwm:

• Viscosifier: PAC feem ntau yog siv los ua cov viscosifier hauv cov dej hauv cov dej drilling. Nws imparts viscosity rau cov kua, txhim kho nws lub peev xwm los ncua thiab thauj drilled cuttings rau saum npoo.
• Fluid Loss Control: PAC tsim cov ncuav mog qab zib nyias, impermeable lim rau ntawm phab ntsa borehole, txo cov kua dej poob rau hauv kev tsim thiab tswj kev ruaj ntseg zoo.
• Rheology Modifier: PAC cuam tshuam rau tus cwj pwm ntws thiab cov khoom siv rheological ntawm cov kua dej drilling, txhim kho kev ncua ntawm cov khib nyiab thiab txo qis.

3. Kev siv:

• Roj thiab Gas Drilling: PAC yog ib qho tseem ceeb additive nyob rau hauv dej-raws li drilling kua siv nyob rau hauv cov roj thiab roj kev tshawb nrhiav thiab kev tsim khoom. Nws pab tswj cov viscosity, kua dej poob, thiab rheology, kom ntseeg tau tias kev ua haujlwm zoo drilling thiab kev ruaj ntseg zoo.
• Kev tsim kho: PAC yog siv los ua cov thickener thiab dej tuav tus neeg sawv cev hauv cov cementitious formulations xws li grouts, slurries, thiab mortars siv hauv kev tsim kho.
• Pharmaceuticals: Nyob rau hauv cov tshuaj formulations, PAC ua hauj lwm raws li ib tug binder, disintegrant, thiab tswj-tso tus neeg saib xyuas nyob rau hauv cov ntsiav tshuaj thiab tshuaj ntsiav formulations.

4. Khoom:

• Dej Solubility: PAC yog yooj yim soluble nyob rau hauv dej, tso cai rau ib qho yooj yim incorporated rau hauv aqueous systems tsis tas yuav tsum tau ntxiv cov kuab tshuaj los yog dispersants.
• Kev ruaj ntseg siab: PAC nthuav tawm cov thermal thiab tshuaj lom neeg ruaj khov, tswj nws cov yam ntxwv ua haujlwm ntawm ntau qhov kub thiab txias thiab pH.
• Salt Tolerance: PAC qhia tau tias muaj kev sib raug zoo nrog cov ntsev ntau ntau thiab cov brine feem ntau ntsib hauv thaj chaw oilfield.
• Biodegradability: PAC yog muab los ntawm cov nroj tsuag txuas ntxiv dua tshiab thiab yog biodegradable, ua rau nws tus phooj ywg ib puag ncig.

5. Zoo thiab Specifications:

• PAC cov khoom lag luam muaj nyob rau hauv ntau qib thiab cov lus qhia tshwj xeeb raws li cov ntawv thov tshwj xeeb thiab cov kev xav tau 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 yog ib tug ntau yam thiab zoo additive nrog viscosifying, kua poob tswj, thiab rheological zog, ua rau nws tseem ceeb rau ntau yam kev lag luam siv, tshwj xeeb tshaj yog nyob rau hauv cov roj thiab roj drilling kev lag luam. Nws txoj kev ntseeg siab, kev ua tau zoo, thiab kev sib raug zoo ib puag ncig ua rau nws siv dav hauv qhov nyuaj drilling ib puag ncig.