Lub luag haujlwm ntawm hydroxyethyl cellulose (HEC) nyob rau hauv roj drilling yog mas xav tau nyob rau hauv kev npaj thiab kev cai tswjfwm ntawm drilling kua. Raws li cov dej tseem ceeb-soluble polymer, HEC muaj lubrication zoo heev, qhov chaw ua rau nws ua lub luag haujlwm ntau hauv cov roj drilling txheej txheem.
1. Thickener lub luag haujlwm
Ib qho ntawm cov haujlwm tseem ceeb tshaj plaws ntawm HEC hauv cov kua dej drilling yog cov tuab tuab. Drilling cov kua ua si tau lub luag haujlwm tseem ceeb heev hauv cov roj drilling. Nws tsis yog tsuas yog lub nruab nrab rau kev xa cov khoom siv drilling, tab sis kuj ua lub luag haujlwm hauv txias lub laum, nqa cov cuttings thiab stabilizing lub condlice. In order to achieve these functions, the drilling fluid needs to have appropriate viscosity and fluidity, and the thickening effect of HEC can effectively increase the viscosity of the drilling fluid, thereby enhancing the carrying capacity of the drilling fluid, enabling it to better bring the cuttings from the bottom of the well to the ground, and avoid deposition and clogging the wellbore.
2. Nce Tus Neeg Sawv Cev
Thaum lub sij hawm cov roj drilling txheej txheem, cov dej lim dej yuav tsum khaws cov downhole pob zeb cuttings, cov khoom txiav kom tiv thaiv lawv los ntawm hauv qab ntawm lub qhov dej lossis phab ntsa zoo, ua rau muaj kev thaiv zoo. Raws li cov neeg tuaj yeem ncua, HEC tuaj yeem tswj hwm lub xeev ncua kev kawm ntawm cov khoom siv tau nyob hauv cov kua dej tsis muaj dej ntawm cov kev ua kom muaj cov dej tsis zoo. Nws zoo solubility thiab VisCoelastic pab cov dej lim kom nyob hauv lub xeev tsis sib xws hauv qab ntuj los yog qhov kev txhim kho qis, yog li kev txhim kho drilling effective efficiency thiab kev nyab xeeb.
3. Cov nyhib cov nyhuv
Thaum lub sij hawm roj rilling, kev sib txhuam ntawm lub laum me ntsis thiab phab ntsa zoo yuav tsim kom muaj cua sov, uas yuav tsis tsuas yog ua kom nrawm dua ntawm cov laum me ntsis, tab sis kuj yuav ua rau muaj kev puas ntsoog. HEC muaj cov hluav taws xob zoo lubrication. Nws tuaj yeem tsim zaj duab xis tiv thaiv hauv cov kua dej, txo cov kev sib txhuam ntawm lub laum thiab txuas ntxiv cov kev pabcuam lub neej ntawm laum me ntsis. Tsis tas li ntawd, lubrication nyhuv ntawm hec kuj tseem tuaj yeem txo txoj kev pheej hmoo ntawm phab ntsa zoo thiab ua kom cov kev ua haujlwm du ntawm kev ua haujlwm drooring.
4. Rheological txoj cai
Cov cuab yeej rheator ntawm drilling cov dej yog hais txog nws lub fluidity nyob rau hauv cov kev mob sib txawv, uas yog qhov tseem ceeb los xyuas kom muaj kev nyab xeeb thiab ua haujlwm ntawm kev ua haujlwm. HEC tuaj yeem hloov kho cov yam ntxwv ntawm cov kua hluav taws xob kom cov kua dej kom zoo kom nws muaj cov tshuaj zoo thaum lub sijhawm khiav haujlwm thiab tuaj yeem qhia kev txhawb zog thiab raug ncua thaum xav tau. Piv txwv li, nyob rau hauv kev kub siab thiab siab siab, lub rheological cov yam ntxwv ntawm cov kua dej drilling yuav hloov. Qhov kev sib txuas ntawm HEC tuaj yeem siv hluav taws xob rau nws cov khoom siv nrawm kom nws tseem tuaj yeem tswj tau qhov zoo tshaj plaws nyob rau hauv cov xwm txheej huab.
5. Anti-dej poob txiaj ntsig
Thaum lub sij hawm drilling, dej nyob hauv cov kua dej txav mus los tau nkag mus rau kev tsim, ua rau lub phab ntsa zoo kom tsis ruaj khov lossis txawm tias qhov teeb meem dej poob. Hec tuaj yeem txo cov dej poob ntawm cov kua dej tsis zoo ntawm cov dej zoo los tiv thaiv cov dej hauv cov kua dej los ntawm kev nkag mus rau hauv kev tsim. Qhov no tsis yog tsuas yog pab tiv thaiv qhov ruaj khov ntawm phab ntsa zoo, tab sis kuj tseem tiv thaiv kev ua paug thiab txo cov kev phom sij ib puag ncig.
6. Ib puag ncig ua phooj ywg
HEC yog lub ntuj cellulose derivative nrog zoo biodegradability thiab tsawg toxicity. Nws yuav tsis ua rau muaj kuab paug rau ib puag ncig thaum siv. Qhov no ua rau nws muaj kev xaiv zoo ib puag ncig hauv roj drilling, tshwj xeeb niaj hnub no thaum muaj kev tiv thaiv ib puag ncig ntxiv rau nws daim ntawv thov hauv cov kua lim.
Hydroxyethyl cellulose (HEC) ua ib lub luag hauj lwm tseem ceeb hauv kev nqus roj. Raws li cov tuab yaj ntawv, cov neeg sawv cev, cov roj nplua nyeem, thiab txo cov kev pheej hmoo ntawm phab ntsa kom ruaj khov thiab muaj kev thaiv zoo. Tsis tas li ntawd, HEC ib puag ncig kev phooj ywg ua rau nws muaj cov khoom siv hluav taws xob tsis txaus ntseeg hauv cov txheej txheem roj niaj hnub. Nrog kev nce qib ntawm kev siv thev naus laus zis, kev thov cov kev cia siab ntawm HEC hauv kev nqus roj yuav dav thiab tuaj yeem qhia nws lub peev xwm hauv cov liaj teb ntau.
Lub Sijhawm Post: Feb-17-2025