Kev siv sodium carboxymethyl cellulose hauv cov kua dej drilling

Sodium carboxymethyl cellulose (CMC-Na luv) yog ib qho tseem ceeb polymer compound soluble hauv dej thiab siv dav hauv cov roj drilling fluid. Nws cov yam ntxwv tshwj xeeb ua rau nws yog ib qho tseem ceeb hauv cov kua drilling.

1. Cov khoom tseem ceeb ntawm sodium carboxymethyl cellulose

Sodium carboxymethyl cellulose yog ib qho anionic cellulose ether uas tsim los ntawm cellulose tom qab kev kho alkali thiab chloroacetic acid. Nws cov qauv molecular muaj ntau pawg carboxymethyl, uas ua rau nws muaj dej solubility zoo thiab ruaj khov. CMC-Na tuaj yeem tsim cov kua dej viscosity siab hauv dej, nrog rau cov khoom thickening, stabilization thiab zaj duab xis-tsim.

2. Kev siv sodium carboxymethyl cellulose hauv cov kua dej drilling

Cov khoom ua kom tuab

CMC-Na siv ua cov khoom ua kom tuab hauv cov kua dej drilling. Nws lub luag haujlwm tseem ceeb yog ua kom cov kua dej drilling viscosity ntau ntxiv thiab txhim kho nws lub peev xwm los nqa cov pob zeb txiav thiab cov txiav drilling. Cov kua dej drilling viscosity tsim nyog tuaj yeem tiv thaiv cov phab ntsa qhov dej tawg thiab tswj kev ruaj khov ntawm lub qhov dej.

Cov kua dej poob qis

Thaum lub sijhawm ua haujlwm drilling, cov kua dej drilling yuav nkag mus rau hauv cov qhov ntawm lub hauv paus, ua rau cov dej poob hauv cov kua dej drilling, uas tsis yog tsuas yog pov tseg cov kua dej drilling, tab sis kuj tseem yuav ua rau phab ntsa qhov dej tawg thiab ua rau lub pas dej puas tsuaj. Ua ib qho khoom siv txo cov kua dej poob, CMC-Na tuaj yeem tsim cov khoom siv lim dej ntom ntom ntawm phab ntsa qhov dej, txo cov dej lim dej poob thiab tiv thaiv cov qauv thiab phab ntsa qhov dej.

Cov roj nplua nyeem

Thaum lub sijhawm ua haujlwm drilling, qhov kev sib txhuam ntawm lub laum thiab phab ntsa qhov dej yuav tsim ntau cua sov, ua rau cov cuab yeej laum hnav ntau dua. Lubricity ntawm CMC-Na pab txo qhov kev sib txhuam, txo qhov kev hnav ntawm cov cuab yeej laum, thiab txhim kho kev ua haujlwm drilling.

Cov khoom ruaj khov

Cov kua dej drilling yuav flocculate lossis decompose nyob rau hauv qhov kub thiab txias siab thiab siab siab, yog li ntawd poob nws txoj haujlwm. CMC-Na muaj kev ruaj khov thermal thiab ntsev zoo, thiab tuaj yeem tswj tau qhov ruaj khov ntawm cov kua dej drilling nyob rau hauv cov xwm txheej hnyav thiab ntev nws lub neej kev pabcuam.

3. Txoj kev ua haujlwm ntawm sodium carboxymethyl cellulose

Kev kho qhov viscosity

Cov qauv molecular ntawm CMC-Na muaj ntau pawg carboxymethyl, uas tuaj yeem tsim cov hydrogen bonds hauv dej kom ua rau cov kua nplaum viscosity ntau dua. Los ntawm kev kho qhov hnyav molecular thiab qib hloov pauv ntawm CMC-Na, qhov viscosity ntawm cov kua drilling tuaj yeem tswj tau kom ua tau raws li qhov xav tau ntawm ntau yam kev mob drilling.

Kev tswj kev lim dej

Cov molecule CMC-Na tuaj yeem tsim cov qauv network peb-seem hauv dej, uas tuaj yeem tsim cov khoom siv lim dej ntom ntom ntawm phab ntsa qhov dej thiab txo qhov poob ntawm cov kua dej drilling. Kev tsim cov khoom siv lim dej tsis yog nyob ntawm qhov concentration ntawm CMC-Na xwb, tab sis kuj nyob ntawm nws qhov hnyav molecular thiab qib hloov pauv.

Kev Siv Lubrication

Cov CMC-Na molecules tuaj yeem nqus tau rau ntawm qhov chaw ntawm lub qhov khawb thiab phab ntsa qhov dej hauv dej los tsim cov zaj duab xis lubricating thiab txo cov coefficient sib txhuam. Tsis tas li ntawd, CMC-Na kuj tseem tuaj yeem txo qhov sib txhuam ntawm lub qhov khawb thiab phab ntsa qhov dej los ntawm kev kho qhov viscosity ntawm cov kua drilling.

Kev ruaj khov ntawm cua sov

CMC-Na tuaj yeem tswj tau qhov ruaj khov ntawm nws cov qauv molecular nyob rau hauv qhov kub siab thiab tsis yooj yim rau kev puas tsuaj thermal. Qhov no yog vim tias cov carboxyl pawg hauv nws cov molecules tuaj yeem tsim cov hydrogen bonds ruaj khov nrog cov dej molecules kom tiv taus kev puas tsuaj kub siab. Tsis tas li ntawd, CMC-Na kuj muaj kev tiv thaiv ntsev zoo thiab tuaj yeem tswj nws cov kev ua tau zoo hauv cov dej ntsev. 

4. Piv txwv ntawm daim ntawv thov ntawm Sodium Carboxymethyl Cellulose

Hauv cov txheej txheem drilling tiag tiag, qhov cuam tshuam ntawm kev siv sodium carboxymethyl cellulose yog qhov zoo kawg nkaus. Piv txwv li, hauv qhov project drilling tob, lub tshuab drilling fluid uas muaj CMC-Na tau siv los tswj kev ruaj khov thiab kev lim dej ntawm lub qhov dej, ua kom qhov ceev ntawm drilling, thiab txo cov nqi drilling. Tsis tas li ntawd, CMC-Na kuj siv dav hauv kev drilling hauv dej hiav txwv, thiab nws txoj kev tiv thaiv 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 poob, lubrication thiab stabilization. Nws cov khoom siv lub cev thiab tshuaj lom neeg tshwj xeeb ua rau nws yog ib qho tseem ceeb hauv cov kua dej drilling. Nrog rau kev txhim kho tas mus li ntawm cov thev naus laus zis drilling, daim ntawv thov ntawm sodium carboxymethyl cellulose yuav dav dua. Hauv kev tshawb fawb yav tom ntej, cov qauv molecular thiab cov txheej txheem hloov kho ntawm CMC-Na tuaj yeem ua kom zoo dua los txhim kho nws cov kev ua tau zoo thiab ua tau raws li qhov xav tau ntawm cov chaw drilling nyuaj dua.