Polyanionic cellulose (PAC) yog ib qho cellulose derivative uas yaj tau hauv dej uas siv dav hauv kev lag luam roj thiab roj av, tshwj xeeb tshaj yog hauv cov kua dej fracturing. Hydraulic fracturing, feem ntau hu ua fracking, yog ib txoj kev txhawb nqa siv los ua kom cov roj thiab cov roj av los ntawm cov pas dej hauv av ntau ntxiv. PACs ua ntau yam haujlwm tseem ceeb hauv kev tsim thiab kev ua haujlwm ntawm hydraulic fracturing, pab txhawb rau kev ua haujlwm zoo, kev ruaj khov thiab kev vam meej ntawm cov txheej txheem.
1. Kev Taw Qhia Txog Polyanionic Cellulose (PAC):
Polyanionic cellulose yog muab los ntawm cellulose, ib qho polymer ntuj uas pom muaj nyob rau hauv cov phab ntsa cell ntawm cov nroj tsuag. Kev tsim cov PAC cuam tshuam nrog kev hloov pauv tshuaj ntawm cellulose, ua rau muaj cov polymer anionic uas yaj tau hauv dej. Nws cov yam ntxwv tshwj xeeb ua rau nws haum rau ntau yam kev siv, suav nrog ua cov khoom xyaw tseem ceeb hauv kev tawg cov kua dej.
2. Lub luag haujlwm ntawm PAC hauv kev tawg kua:
Ntxiv PAC rau hauv cov kua dej tawg tuaj yeem hloov nws cov khoom rheological, tswj kev poob kua, thiab txhim kho kev ua haujlwm ntawm cov kua tag nrho. Nws cov khoom siv ntau yam pab txhawb rau kev vam meej ntawm hydraulic fracturing ntau txoj kev.
2.1 Kev hloov pauv ntawm Rheological:
PAC ua haujlwm ua tus hloov pauv rheology, cuam tshuam rau qhov viscosity thiab cov yam ntxwv ntws ntawm cov kua dej tawg. Kev tswj viscosity yog qhov tseem ceeb rau kev xa cov proppant zoo tshaj plaws, xyuas kom meej tias cov proppant raug nqa thiab tso rau hauv cov pob zeb tawg uas tsim nyob rau hauv cov pob zeb.
2.2 Kev tswj dej poob:
Ib qho ntawm cov teeb meem ntawm hydraulic fracturing yog tiv thaiv kom tsis txhob muaj kua ntau dhau los ntawm kev poob rau hauv qhov tsim. PAC tuaj yeem tswj tau qhov dej poob thiab tsim ib lub ncuav mog qab zib tiv thaiv rau ntawm qhov tawg. Qhov no pab tswj kev tawg kom zoo, tiv thaiv kev nkag mus rau hauv proppant thiab ua kom muaj kev tsim khoom zoo.
2.3 Kev ruaj khov ntawm qhov kub thiab txias:
PAC ruaj khov thaum kub thiab txias, yog ib qho tseem ceeb hauv kev ua haujlwm hydraulic fracturing, uas feem ntau xav tau kev raug rau ntau yam kub thiab txias. Lub peev xwm ntawm PAC los tswj nws txoj haujlwm nyob rau hauv ntau yam kub thiab txias pab txhawb rau kev ntseeg tau thiab kev vam meej ntawm cov txheej txheem fracturing.
3. Cov lus qhia rau cov mis:
Kev siv PAC kom zoo hauv cov kua dej tawg yuav tsum tau xav txog cov qauv tsim. Qhov no suav nrog kev xaiv qib PAC, kev sib xyaw, thiab kev sib haum xeeb nrog lwm cov khoom ntxiv. Kev sib cuam tshuam ntawm PAC thiab lwm yam khoom hauv cov kua dej tawg, xws li cov cross-linkers thiab breakers, yuav tsum tau ua kom zoo tshaj plaws rau kev ua haujlwm zoo tshaj plaws.
4. Kev txiav txim siab txog ib puag ncig thiab kev cai lij choj:
Raws li kev paub txog ib puag ncig thiab cov cai tswjfwm hydraulic fracturing txuas ntxiv mus, kev siv PACs hauv cov kua dej fracturing yog sib xws nrog kev siv zog ntawm kev lag luam los tsim cov qauv zoo rau ib puag ncig. PAC yog dej-soluble thiab biodegradable, txo qis kev cuam tshuam rau ib puag ncig thiab daws cov teeb meem cuam tshuam nrog cov tshuaj ntxiv hauv hydraulic fracturing.
5. Cov kev tshawb fawb txog cov ntaub ntawv thiab cov kev siv hauv thaj chaw:
Muaj ntau cov ntaub ntawv tshawb fawb thiab cov ntawv thov hauv thaj chaw uas qhia tau tias siv PAC tau zoo hauv kev ua hydraulic fracturing. Cov piv txwv no qhia txog kev txhim kho kev ua tau zoo, kev siv nyiaj tsim nyog thiab cov txiaj ntsig ib puag ncig ntawm kev siv PAC rau hauv cov kua dej fracturing.
6. Tej teeb meem thiab kev txhim kho yav tom ntej:
Txawm hais tias PAC tau ua pov thawj tias yog ib qho tseem ceeb hauv cov kua dej tawg, cov teeb meem tseem muaj xws li cov teeb meem sib xws nrog qee cov dej tsim thiab qhov xav tau kev tshawb fawb ntxiv rau lawv cov kev cuam tshuam rau ib puag ncig mus sij hawm ntev. Kev txhim kho yav tom ntej yuav tsom mus rau kev daws cov teeb meem no, nrog rau kev tshawb nrhiav cov qauv tshiab thiab cov thev naus laus zis los ua kom muaj kev ua haujlwm zoo thiab kev ruaj khov ntawm kev ua haujlwm hydraulic fracturing.
7. Xaus Lus:
Polyanionic cellulose (PAC) ua lub luag haujlwm tseem ceeb hauv kev tsim cov kua dej tawg rau kev ua haujlwm hydraulic fracturing hauv kev lag luam roj thiab roj av. Nws cov khoom tshwj xeeb pab txhawb rau kev tswj hwm rheology, kev tiv thaiv kev poob kua thiab kev ruaj khov kub, thaum kawg txhim kho kev vam meej ntawm cov txheej txheem fracturing. Raws li kev lag luam txuas ntxiv hloov zuj zus, daim ntawv thov ntawm PAC yog sib xws nrog kev txiav txim siab ib puag ncig thiab cov kev cai lij choj, ua rau nws yog ib qho tseem ceeb hauv kev txhim kho cov kev coj ua hydraulic fracturing ruaj khov. Kev tshawb fawb thiab kev txhim kho tas mus li yuav ua rau muaj kev nce qib ntxiv hauv PAC-based fracturing fluid formulations, daws cov teeb meem thiab ua kom zoo dua kev ua tau zoo nyob rau hauv ntau yam geological thiab kev ua haujlwm.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-06-2023