Carboxymethyl cellulose (CMC) yog ib hom polymer uas yaj tau hauv dej uas tau los ntawm cellulose, feem ntau siv rau ntau yam lag luam vim nws cov khoom ua kom tuab, ruaj khov, thiab emulsifying. Tshwj xeeb tshaj yog, CMC uas muaj viscosity siab (CMC-HV) muaj cov yam ntxwv tshwj xeeb uas ua rau nws muaj txiaj ntsig zoo rau kev siv roj av.
1. Cov Qauv Tshuaj thiab Cov Khoom Siv
CMC yog tsim los ntawm kev hloov kho tshuaj ntawm cellulose, ib qho polymer ntuj pom nyob rau hauv cov phab ntsa cell ntawm cov nroj tsuag. Cov txheej txheem no cuam tshuam nrog kev qhia txog carboxymethyl pawg (-CH2-COOH) rau hauv cellulose backbone, uas ua rau cellulose yaj hauv dej. Qib ntawm kev hloov pauv (DS), uas yog hais txog tus lej nruab nrab ntawm cov carboxymethyl pawg ib chav anhydroglucose hauv cellulose molecule, cuam tshuam rau cov khoom ntawm CMC. Cov roj av qib siab viscosity CMC feem ntau muaj DS siab, txhim kho nws cov dej solubility thiab viscosity.
2. Viscosity siab
Qhov tshwj xeeb ntawm CMC-HV yog nws cov viscosity siab thaum yaj hauv dej. Viscosity yog qhov ntsuas ntawm cov kua dej tsis kam rau kev ntws, thiab viscosity siab CMC tsim cov kua tuab, zoo li gel txawm tias nyob rau hauv qhov concentration qis. Cov khoom no yog qhov tseem ceeb hauv kev siv roj av qhov twg CMC-HV siv los hloov kho cov khoom rheological ntawm cov kua drilling thiab lwm yam formulations. Qhov viscosity siab ua kom muaj kev ncua zoo ntawm cov khoom khov, lubrication zoo dua, thiab kev ruaj khov ntawm cov av nkos drilling.
3. Kev yaj dej
CMC-HV yaj tau zoo heev hauv dej, uas yog qhov tseem ceeb rau nws siv hauv kev lag luam roj av. Thaum ntxiv rau cov dej-raws li formulations, nws sai sai hydrates thiab yaj, tsim cov tshuaj homogeneous. Qhov solubility no yog qhov tseem ceeb rau kev npaj thiab siv cov kua drilling, cement slurries, thiab cov kua tiav hauv kev ua haujlwm roj av.
4. Kev Ruaj Ntseg Thermal
Kev ua haujlwm roj av feem ntau muaj qhov kub thiab txias heev, thiab qhov ruaj khov ntawm CMC-HV yog qhov tseem ceeb heev. Qib CMC no yog tsim los tswj nws cov viscosity thiab kev ua haujlwm hauv qab qhov kub siab, feem ntau txog li 150 ° C (302 ° F). Qhov ruaj khov ntawm qhov kub thiab txias no ua kom muaj kev ua tau zoo tas li hauv kev khawb thiab cov txheej txheem tsim khoom kub thiab txias, tiv thaiv kev puas tsuaj thiab kev poob ntawm cov khoom.
5. Kev Ruaj Ntseg pH
CMC-HV muaj kev ruaj khov zoo thoob plaws ntau yam pH, feem ntau yog txij li 4 txog 11. Qhov kev ruaj khov pH no tseem ceeb vim tias cov kua dej drilling thiab lwm cov roj av uas muaj feem cuam tshuam nrog tuaj yeem ntsib ntau yam pH. Kev tswj kom muaj viscosity thiab kev ua tau zoo hauv ntau qhov chaw pH ua kom ntseeg tau tias CMC-HV ua haujlwm tau zoo thiab ntseeg tau hauv ntau yam kev ua haujlwm.
6. Kev kam rau ntsev
Hauv kev siv roj av, cov kua dej feem ntau kov tau ntau yam ntsev thiab electrolytes. CMC-HV yog tsim los kom ua siab ntev rau cov chaw ib puag ncig zoo li no, tswj nws cov viscosity thiab cov khoom ua haujlwm hauv qhov muaj ntsev. Qhov kev ua siab ntev ntsev no yog qhov tshwj xeeb tshaj yog rau kev khawb av hauv hiav txwv thiab lwm yam haujlwm uas muaj cov dej ntsev ntau.
7. Kev Tswj Xyuas Kev Pom
Ib qho ntawm cov haujlwm tseem ceeb ntawm CMC-HV hauv cov kua dej drilling yog tswj cov kua dej poob, tseem hu ua kev tswj kev lim dej. Thaum siv rau hauv cov av nkos drilling, CMC-HV pab tsim cov ncuav mog qab zib nyias, tsis pub dej nkag rau ntawm phab ntsa ntawm lub qhov dej, tiv thaiv kev poob dej ntau dhau rau hauv cov av. Qhov kev tswj kev lim dej no yog qhov tseem ceeb rau kev tswj hwm qhov ruaj khov ntawm lub qhov dej thiab tiv thaiv kev puas tsuaj ntawm cov av.
8. Kev puas tsuaj ntawm cov khoom thiab kev cuam tshuam rau ib puag ncig
Ua ib qho kev xaiv uas tsis ua rau ib puag ncig puas tsuaj, CMC-HV yog cov khoom siv uas lwj tau thiab tau los ntawm cov khoom siv rov ua dua tshiab. Nws qhov kev lwj tau txhais tau tias nws yuav lwj mus raws li lub sijhawm, txo qhov cuam tshuam rau ib puag ncig piv rau cov polymers tsim. Qhov cwj pwm no tseem ceeb zuj zus vim tias kev lag luam roj av tsom mus rau kev ruaj khov thiab txo qhov cuam tshuam rau ib puag ncig.
9. Kev Sib Piv Nrog Lwm Cov Khoom Siv Ntxiv
CMC-HV feem ntau siv ua ke nrog lwm cov khoom ntxiv rau hauv cov kua dej drilling thiab lwm cov roj av formulations. Nws sib xws nrog ntau yam tshuaj, xws li xanthan gum, guar gum, thiab cov polymers hluavtaws, tso cai rau kev hloov kho cov khoom ntawm cov kua kom tau raws li cov kev xav tau ua haujlwm tshwj xeeb. Qhov kev hloov pauv no ua rau kev ua tau zoo thiab kev ua haujlwm ntawm cov kua dej drilling zoo dua.
10. Kev nplua nplua
Hauv kev ua haujlwm drilling, kev txo qhov kev sib txhuam ntawm txoj hlua laum thiab lub qhov dej yog qhov tseem ceeb rau kev drilling zoo thiab txo qhov hnav. CMC-HV pab txhawb rau lubricity ntawm cov kua drilling, txo torque thiab rub, thiab txhim kho qhov kev ua haujlwm zoo ntawm cov txheej txheem drilling. Qhov lubricity no kuj pab txhawb rau kev ua haujlwm ntev ntawm cov khoom siv drilling.
11. Kev ncua thiab kev ruaj khov
Lub peev xwm los dai thiab ruaj khov cov khoom khov hauv cov kua dej drilling yog qhov tseem ceeb rau kev tiv thaiv kev poob thiab ua kom cov khoom sib xws thoob plaws hauv cov kua. CMC-HV muab cov peev xwm dai zoo heev, ua kom cov khoom hnyav, cov khoom txiav, thiab lwm yam khoom khov faib sib npaug. Qhov kev ruaj khov no yog qhov tseem ceeb rau kev tswj cov khoom khov kho thiab tiv thaiv cov teeb meem ua haujlwm.
12. Cov txiaj ntsig tshwj xeeb rau daim ntawv thov
Cov Kua Drilling: Hauv cov kua drilling, CMC-HV ua rau kom viscosity ntau dua, tswj cov kua poob, ua kom lub qhov bore ruaj khov, thiab muab lubrication. Nws cov khoom ua kom ntseeg tau tias kev ua haujlwm drilling zoo, txo qhov cuam tshuam rau ib puag ncig, thiab txhim kho kev ua haujlwm tag nrho ntawm lub tshuab drilling fluid.
Cov Kua Ua Kom Tiav: Hauv cov kua ua kom tiav, CMC-HV siv los tswj cov kua dej poob, ua kom lub qhov dej ruaj khov, thiab xyuas kom meej tias cov txheej txheem ua tiav zoo. Nws qhov kev ruaj khov thermal thiab kev sib raug zoo nrog lwm cov khoom ntxiv ua rau nws tsim nyog siv rau hauv cov qhov dej kub thiab siab.
Kev Ua Haujlwm Cementing: Hauv cov cement slurries, CMC-HV ua haujlwm ua tus neeg sawv cev viscosifier thiab tus neeg sawv cev tswj kev poob kua. Nws pab ua tiav cov khoom rheological xav tau ntawm cov cement slurry, xyuas kom meej qhov chaw thiab teeb tsa ntawm cov cement, thiab tiv thaiv kev tsiv teb tsaws chaw ntawm cov pa roj thiab kev poob kua.
Cov roj av qib siab viscosity CMC (CMC-HV) yog ib qho polymer uas siv tau ntau yam thiab tseem ceeb hauv kev lag luam roj av. Nws cov yam ntxwv tshwj xeeb, suav nrog viscosity siab, solubility dej, thermal thiab pH stability, ntsev tolerance, filtration control, biodegradability, thiab compatibility nrog lwm cov additives, ua rau nws tseem ceeb rau ntau yam kev siv roj av. Txij li cov kua drilling mus rau kev ua tiav thiab cementing operations, CMC-HV txhim kho kev ua tau zoo, kev ua haujlwm zoo, thiab kev ruaj khov ib puag ncig ntawm kev rho tawm roj av thiab cov txheej txheem tsim khoom. Raws li kev lag luam txuas ntxiv mus, qhov kev thov rau kev ua tau zoo siab, cov khoom ntxiv zoo rau ib puag ncig zoo li CMC-HV tsuas yog yuav nce ntxiv, qhia txog nws lub luag haujlwm tseem ceeb hauv kev lag luam roj av niaj hnub no.
Lub sijhawm tshaj tawm: Lub Rau Hli-06-2024