Hauv kev lag luam drilling, ntau cov av nkos (los yog cov kua dej drilling) yog cov ntaub ntawv tseem ceeb los xyuas kom meej qhov kev vam meej ntawm cov txheej txheem drilling. Tshwj xeeb tshaj yog nyob rau hauv complex geological ib puag ncig, kev xaiv thiab kev npaj ntawm drilling av nkos muaj ib qho tseem ceeb rau kev ua tau zoo, kev nyab xeeb thiab tus nqi tswj ntawm drilling ua hauj lwm. cuam tshuam ncaj qha.Hydroxyethyl Cellulose (HEC)yog lub ntuj cellulose derivative uas plays lub luag hauj lwm tseem ceeb raws li ib tug additive nyob rau hauv drilling av nkos. Nws muaj zoo thickening, rheology, anti-pollution zog thiab siab Environmentally zoo, nws yog dav siv nyob rau hauv drilling kua systems.
1. Cov yam ntxwv thiab cov qauv tshuaj ntawm HEC
HEC yog dej-soluble, non-toxic thiab harmless natural polymer compound. Cov tshuaj hloov kho cellulose qhia cov pab pawg hydroxyethyl rau hauv nws cov qauv molecular, yog li tsim cov nyhuv thickening thiab dej solubility. Kev thov ntawm HEC hauv cov dej drilling feem ntau yog nyob ntawm pawg hydrophilic (hydroxyl thiab hydroxyethyl pawg) hauv nws cov saw molecular. Cov pab pawg no tuaj yeem tsim kom muaj kev sib koom ua ke zoo hydrogen hauv cov kua dej, muab cov tshuaj viscosity-nce ntxiv zog. .
2. Lub luag hauj lwm tseem ceeb ntawm HEC hauv drilling av nkos
Thickening agent effect
Ib qho ntawm cov haujlwm tseem ceeb tshaj plaws ntawm HEC hauv cov kua dej drilling yog ua cov thickener. Cov yam ntxwv siab viscosity ntawm HEC tuaj yeem ua rau kom cov viscosity ntawm cov dej drilling, kom ntseeg tau tias cov dej drilling muaj peev xwm txhawb nqa txaus los pab nqa cov txiav thiab cov xuab zeb thiab thauj cov khib nyiab hauv qab ntawm qhov dej mus rau saum npoo. Ua kom cov viscosity ntawm cov dej drilling kuj tseem pab txo kev sib txhuam ntawm cov phab ntsa sab hauv ntawm lub raj drilling, yog li txhim kho kev ua haujlwm ntawm drilling. Tsis tas li ntawd, HEC muaj zog thickening zog thiab ruaj khov viscosity pab kom nws ua tau zoo tagnrho thickening teebmeem ntawm tsawg concentrations, zoo txo nqi drilling.
Lub luag haujlwm ntawm tus neeg saib xyuas kev poob dej
Thaum lub sijhawm drilling txheej txheem, kev tswj cov kua dej poob ntawm cov dej drilling yog ib qho tseem ceeb rau kev txiav txim siab. Kev tswj cov dej tsis zoo yog qhov tseem ceeb rau kev tswj xyuas qhov ruaj khov ntawm phab ntsa dej kom tiv thaiv kev nkag mus ntawm cov av nkos ntau dhau mus rau hauv qhov tsim, ua rau muaj kev sib tsoo lossis cov phab ntsa zoo. Vim nws cov khoom muaj dej zoo, HEC tuaj yeem tsim cov txheej tuab ntawm cov ncuav mog qab zib rau ntawm phab ntsa zoo, txo qhov nkag mus ntawm cov dej hauv cov dej drilling rau hauv qhov tsim, yog li tswj tau cov dej tsis zoo ntawm cov av nkos. Cov ncuav mog qab zib lim no tsis tsuas yog muaj qhov zoo thiab lub zog, tab sis kuj tuaj yeem hloov kho rau cov txheej txheem geological sib txawv, yog li tswj kev ruaj ntseg ntawm phab ntsa hauv qhov dej tob thiab qhov kub thiab txias.
Rheological cov neeg ua haujlwm thiab tswj kev ntws
HEC kuj tseem ua lub luag haujlwm tseem ceeb hauv kev tswj cov dej ntws hauv cov av nkos. Lub rheology ntawm drilling kua yog hais txog nws deformation los yog txaus muaj peev xwm nyob rau hauv qhov kev txiav txim ntawm shear stress. Qhov zoo dua ntawm rheology, qhov zoo tshaj plaws ntawm cov kua dej drilling yog nyob rau ntawm kev xa cov siab thiab nqa cov txiav thaum lub sij hawm drilling txheej txheem. HEC tuaj yeem kho cov khoom rheological ntawm cov dej drilling los ntawm kev hloov nws cov viscosity thiab fluidity, yog li txhim kho cov nyhuv shear dilution ntawm cov av nkos, cia cov av nkos ntws mus rau hauv cov yeeb nkab laum thiab txhim kho cov nyhuv lubrication ntawm cov av nkos. Tshwj xeeb tshaj yog nyob rau hauv cov txheej txheem drilling ntawm qhov tob tob thiab kab rov tav qhov dej, qhov kev hloov kho rheological ntawm HEC yog qhov tseem ceeb tshwj xeeb.
Txhim kho qhov dej huv huv
Cov nyhuv thickening ntawm HEC tsis tsuas yog pab txhawb rau cov av nkos lub peev xwm los nqa thiab tshem tawm cov laum txiav, tab sis kuj pab txhim kho kev huv ntawm lub qhov dej. Thaum lub sij hawm drilling txheej txheem, ib tug loj npaum li cas ntawm cuttings yuav tsim nyob rau hauv lub qhov dej. Yog tias cov kev txiav no tsis tuaj yeem ua tau zoo los ntawm cov av nkos, lawv tuaj yeem sib sau ua ke hauv qab ntawm qhov dej thiab tsim cov hauv qab-qhov av, yog li ua kom cov laum me ntsis tsis kam thiab cuam tshuam rau kev ua tiav drilling. Vim nws cov khoom thickening ua tau zoo, HEC tuaj yeem pab cov av nkos ncua thiab thauj cov laum txiav kom zoo dua qub, yog li ua kom lub qhov dej huv huv thiab tiv thaiv cov pob txha ntawm cov pob zeb.
Anti-pollution nyhuv
Thaum lub sij hawm drilling txheej txheem, cov av nkos feem ntau kis los ntawm cov ntxhia sib txawv thiab tsim cov kua dej, ua rau cov av nkos tsis ua haujlwm. HEC cov khoom tiv thaiv kev ua qias tuaj yog lwm qhov zoo dua. HEC yog ruaj khov nyob rau hauv txawv pH tej yam kev mob thiab muaj zog tiv thaiv kev cuam tshuam muaj peev xwm mus multivalent ions xws li calcium thiab magnesium, uas tso cai rau nws kom ruaj khov viscosity thiab thickening teebmeem nyob rau hauv formations muaj minerals, li no txo qhov kev pheej hmoo ntawm drilling kua tsis ua hauj lwm nyob rau hauv ib tug ib puag ncig muaj kuab paug.
Ib puag ncig tus phooj ywg thiab biodegradable
Txij li thaumHECyog cov khoom siv ntuj tsim polymer, nws muaj biodegradability zoo thiab ib puag ncig tus phooj ywg. Hauv cov ntsiab lus ntawm maj mam nce kev tiv thaiv ib puag ncig, cov yam ntxwv biodegradability ntawm HEC ua rau nws yog ib qho tseem ceeb ntawm cov khoom siv dej hauv ib puag ncig. HEC yuav tsis ua rau muaj kuab paug rau ib puag ncig thaum siv, thiab yuav tsis muaj kev cuam tshuam rau cov av thiab dej hauv av tom qab degradation. Yog li ntawd, nws yog ib tug high-zoo ib puag ncig tus phooj ywg additive.
3. Cov kev sib tw thiab kev txhim kho yav tom ntej hauv HEC daim ntawv thov
Txawm hais tias HEC muaj ntau yam zoo hauv cov av nkos, nws qhov kev ua tau zoo nyob rau hauv huab cua drilling xws li kub thiab siab yuav tsum tau txhim kho ntxiv. Piv txwv li, HEC tej zaum yuav raug thermal degradation ntawm qhov kub thiab txias, ua rau cov av nkos poob viscosity thiab thickening. Yog li ntawd, txhawm rau ua haujlwm nyob rau hauv ntau qhov nyuaj thiab qhov chaw drilling, kev tshawb fawb nyob rau hauv xyoo tas los no tau pib tsom mus rau kev hloov kho HEC los txhim kho nws qhov kub thiab txias tsis kam. Piv txwv li, los ntawm kev qhia cov neeg sawv cev sib txuas, cov pab pawg kub kub thiab lwm yam kev hloov kho tshuaj rau hauv HEC molecular saw, qhov ua tau zoo ntawm HEC nyob rau hauv cov xwm txheej huab cua tuaj yeem txhim kho thiab yoog raws li qhov xav tau ntawm thaj chaw xav tau ntau dua.
Raws li ib qho tseem ceeb ntawm cov av nkos drilling, HEC plays lub luag haujlwm tseem ceeb hauv drilling engineering vim nws cov thickening, anti-filtration, rheological hloov, los tiv thaiv kev ua qias tuaj thiab ib puag ncig phooj ywg. Nyob rau hauv lub neej yav tom ntej, raws li drilling qhov tob thiab complexity nce, cov kev ua tau zoo ntawm HEC kuj yuav nce. Los ntawm kev ua kom zoo thiab hloov kho HEC, nws daim ntawv thov muaj nyob rau hauv cov dej drilling yuav raug nthuav dav ntxiv kom tau raws li cov kev xav tau ntawm qhov chaw drilling nruj dua. .
Post lub sij hawm: Nov-14-2024