Hydroxyethyl cellulose hauv Drilling Fluid

Hydroxyethyl cellulose (HEC) yog cov dej-soluble polymer uas feem ntau siv los ua cov viscosifier hauv cov kua dej drilling. Drilling kua, tseem hu ua drilling av nkos, yog ib qho tseem ceeb nyob rau hauv cov txheej txheem drilling siv nyob rau hauv cov roj thiab roj kev tshawb fawb, geothermal zog tsim, thiab ntxhia extraction. Hauv tsab xov xwm no, peb yuav tham txog ntau yam kev siv ntawm HEC hauv cov kua dej drilling.

viscosity tswj

Ib qho ntawm cov kev siv tseem ceeb ntawm HEC hauv cov dej drilling yog los tswj cov viscosity ntawm cov kua. Viscosity yog hais txog lub thickness los yog tsis kam mus ntws ntawm cov kua. Cov txheej txheem drilling yuav tsum muaj cov kua dej uas tuaj yeem ntws tau yooj yim los ntawm kev xyaum me ntsis thiab nqa cov laum txiav rau saum npoo. Txawm li cas los xij, yog tias cov viscosity ntawm cov kua dej tsawg dhau, nws yuav tsis tuaj yeem nqa cov txiav, thiab yog tias nws siab dhau lawm, nws yuav nyuaj rau cov twj tso kua mis los ntawm lub qhov dej.

HEC yog ib qho zoo viscosifier vim tias nws tuaj yeem ua kom cov viscosity ntawm cov dej drilling tsis muaj qhov ua kom qhov ntom ntom. Qhov no yog qhov tseem ceeb vim tias cov kua dej uas muaj qhov ntom ntom tuaj yeem ua rau lub qhov dej puas thiab tej zaum yuav ua rau lub qhov dej puas. Tsis tas li ntawd, HEC muaj txiaj ntsig zoo ntawm qhov tsis tshua muaj siab, uas pab txo qis tag nrho cov nqi ntawm cov dej drilling.

Kev Tswj Dej Tsis Tau

Lwm daim ntawv thov tseem ceeb ntawm HEC hauv cov kua dej drilling yog cov kua dej tsis zoo. Kev poob dej yog hais txog qhov poob ntawm cov kua rau hauv kev tsim thaum lub sijhawm drilling. Qhov no tuaj yeem ua rau txo qhov ntim ntawm cov kua dej drilling, uas tuaj yeem ua rau lub qhov dej tsis zoo thiab txo qhov kev ua haujlwm drilling.

HEC yog tus neeg saib xyuas cov dej tsis zoo vim tias nws tuaj yeem tsim ib lub ncuav mog qab zib nyias, impermeable lim rau ntawm qhov tsim. Lub ncuav mog qab zib lim no pab tiv thaiv cov dej drilling los ntawm kev nkag mus rau hauv kev tsim, txo cov dej tsis zoo thiab tswj kev ruaj ntseg zoo.

Kev ncua thiab nqa peev xwm

HEC kuj tseem siv rau hauv cov kua dej drilling raws li kev ncua thiab nqa tus neeg sawv cev. Cov txheej txheem drilling suav nrog kev siv ntau yam khoom siv ntxiv, suav nrog barite thiab lwm yam khoom hnyav, uas tau ntxiv rau cov kua dej kom nws qhov ntom ntom. HEC muaj txiaj ntsig zoo ntawm kev tshem tawm cov khoom siv ntxiv hauv cov kua dej thiab tiv thaiv lawv los ntawm kev nkag mus rau hauv qab ntawm lub qhov dej.

Tsis tas li ntawd, HEC tuaj yeem ua kom muaj peev xwm nqa tau ntawm cov dej drilling. Qhov no yog hais txog tus nqi ntawm kev xyaum txiav uas cov kua tuaj yeem nqa mus rau saum npoo. Cov kua dej uas muaj peev xwm nqa tau siab tuaj yeem pab txhim kho kev ua haujlwm ntawm qhov drilling thiab txo qhov kev pheej hmoo ntawm qhov dej tsis ruaj khov.

Kub thiab pH stability

Drilling kua yog raug rau ntau yam ntawm ib puag ncig, nrog rau qhov kub thiab txias thiab acidic. HEC muaj peev xwm tswj tau nws cov viscosity thiab ruaj khov nyob rau hauv cov xwm txheej huab cua no, ua rau nws muaj txiaj ntsig zoo ntxiv rau cov kua dej drilling siv hauv cov cheeb tsam nyuaj.

HEC kuj tseem muaj pH ruaj khov, txhais tau hais tias nws tuaj yeem tswj tau nws cov viscosity thiab lwm yam khoom hauv cov kua dej nrog ntau yam ntawm pH qhov tseem ceeb. Qhov no yog qhov tseem ceeb vim tias pH ntawm cov kua dej drilling tuaj yeem sib txawv nyob ntawm qhov chaw geological ntawm lub qhov dej.

Xaus

HEC yog ib qho tseem ceeb additives nyob rau hauv cov dej drilling vim nws muaj peev xwm tswj viscosity, txo cov kua dej, tshem tawm thiab nqa cov khoom additives, thiab tswj kev ruaj ntseg nyob rau hauv ib puag ncig nyuaj.