Sodium carboxymethyl cellulose (cmc-neeb (cmc-neeb) yog ib qho tseem ceeb uas dej-soluble polymer compound thiab yog dav siv nyob rau hauv roj drilling kua. Nws cov khoom tshwj xeeb ua rau nws muaj feem tsis muaj kev sib cav hauv lub tshuab drilling.
1. Cov khoom yooj yim ntawm cov sodium carboxymethyl cellulose
Sodium Carboxymethyl cellulose yog ib qho anionic cellulose tsim los ntawm cellulose los ntawm cellulose tom qab kev kho mob alkali thiab chloroacetic acid. Nws cov qauv molecular muaj ntau tus ntawm cov carboxymethyl pab pawg, uas ua rau nws muaj dej so kom zoo thiab ruaj khov. CMC-NA tuaj yeem tsim lub siab-viscosity daws hauv dej, nrog cov thickening, ruaj khov thiab ua yeeb yam-ua yeeb yam khoom.
2. Daim ntawv thov ntawm sodium carboxymethyl cellulose hauv cov kua dej drilling
Tuab dua
CMC-NA yog siv los ua cov tuab hauv cov kua dej drilling. Nws lub ntsiab muaj nuj nqi yog kom nce viscosity ntawm drilling kua thiab txhim kho nws lub peev xwm los nqa pob zeb cuttings thiab tho kev txiav. Qhov tsim nyog viscosity ntawm cov kua drilling tuaj yeem tiv thaiv kev nyab xeeb phab ntsa vau thiab tswj hwm qhov chaw ruaj khov ntawm qhov chaw ua haujlwm.
Kev Reducer Dej Ua Kua
Thaum lub sijhawm drilling yuav nkag mus rau hauv qhov hws ntawm kev tsim, uas tsis tsuas yog khib nyiab kom zoo nkauj thiab dej ua kom zoo. Raws li cov kua txo, cmc-na tuaj yeem tsim lub lim dej qab zib ntawm phab ntsa uas tsis muaj dej thiab tiv thaiv kev tsim thiab phab ntsa zoo.
Kua npluas
Thaum lub sij hawm drilling, kev sib txhuam ntawm lub laum me ntsis thiab phab ntsa zoo yuav ua rau muaj cua sov ntau, ua rau muaj kev nce ntawm cov tho kev. Lubricity ntawm CMC-NA pab kom txo kev sib txhuam, txo cov hnav ntawm cov tho kev, thiab txhim kho kev siv drilling.
Lub stababilizer
Drilling kua yuav flocculate lossis degrade nyob rau hauv nyob rau hauv cov kub thiab siab siab, yog li poob nws cov haujlwm. CMC-NA muaj zoo thermal stability thiab ntsev kuj, thiab tuaj yeem tswj qhov kev ruaj ntseg ntawm cov kua dej hauv qab thiab txuas ntxiv nws lub neej pabcuam.
3. Mechanism ntawm Kev Ua ntawm Sodium Carboxymethyl cellulose
Viscosity kev hloov kho
Cov qauv molecular ntawm CMC-NA muaj ntau cov carboxymethyl pawg, uas tuaj yeem tsim cov kas fes hydrogen hauv dej kom nce viscosity ntawm kev daws teeb meem. Los ntawm kev kho cov molecular hnyav thiab qhov hloov chaw qib ntawm CMC-NA, lub viscosity ntawm cov kua dej tau tuaj yeem tswj tau raws li cov kev xav tau ntawm cov kev xav tau sib txawv.
Kev tswj cov kev lim dej
CMC-NA lwg me me tuaj yeem tsim cov qauv sib txawv hauv cov dej, uas tuaj yeem tsim cov lim dej zoo thiab txo cov kev lim dej. Qhov tsim ntawm cov lim ncuav mog qab zib nyob tsis yog ntawm kev xav ntawm CMC-NA, tab sis kuj ntawm nws txoj kev ua molecular thiab kev hloov pauv.
Lubrication
CMC-NA lwg me me tuaj yeem raug Adsorbed nyob rau saum npoo ntawm lub laum me ntsis hauv dej los ua cov yeeb yaj kiab lubricating thiab txo cov kev sib txhuam. Tsis tas li ntawd, CMC-NA kuj tseem tuaj yeem tsis ncaj rau kev sib txhuam ntawm cov laum thiab lub phab ntsa zoo los ntawm kev kho cov viscosity ntawm cov kua dej.
Thermal ruaj khov
CMC-NA tuaj yeem tswj hwm qhov ruaj khov ntawm nws cov qauv molecular raws li cov kev mob siab thiab tsis yog muaj feem rau kev cuam tshuam thermal. Qhov no vim tias cov pab pawg carboxyl hauv nws cov lwg me me tuaj yeem tsim cov hlua dej ruaj khov nrog cov lwg dej uas tiv thaiv cov kev puas kub siab. Tsis tas li ntawd, CMC-NA kuj muaj ntsev zoo thiab tuaj yeem tswj nws qhov kev ua tau zoo hauv saline comicts.
4. Cov ntawv thov piv txwv ntawm sodium carboxymethyl cellulose
Nyob rau hauv qhov tseeb drilling txheej txheem, daim ntawv thov nyhuv ntawm sodium carboxymethyl cellulose zoo kawg li. Piv txwv li, hauv qhov kev sib sib zog nqus dej, muaj cov dej lim dej zoo nkauj uas muaj CMC-NA tau siv los ntawm qhov chaw ua haujlwm nrawm, thiab txo cov nqi drilling. Tsis tas li ntawd, CMC-NA tseem muaj dav hauv kev ua haujlwm marine drilling, thiab nws cov ntsev zoo ua rau nws ua tau zoo hauv ib puag ncig marine.
Daim ntawv thov ntawm sodium carboxymethyl cellulose hauv cov kua dej drilling feem ntau suav nrog plaub yam: thickening, txo cov dej tsis muaj zog, tswj hwm. Nws tshwj xeeb lub cev thiab tshuaj lom neeg ua rau nws muaj qhov tsis tseem ceeb hauv kev siv cov kua dej drilling. Nrog kev tsim kho cov thev naus laus zis ntawm cov tshuab drilling, daim ntawv thov cov kev cia siab ntawm sodium carboxymethyl cellulose yuav dav dav. Nyob rau hauv yav tom ntej kev tshawb fawb, cov qauv molecular thiab hloov kho cov qauv ntawm CMC-NA tuaj yeem ua kom zoo dua los txhim kho nws cov kev ua tau zoo thiab ua tau raws li cov kev xav tau ntawm cov chaw muaj dej ntau dua.
Lub Sijhawm Post: Jul-25-2024