Drilling kua, feem ntau yog hu ua cov av nkos, yog qhov tseem ceeb hauv cov txheej txheem drilling ntawm cov roj thiab roj zoo. Lawv lub luag haujlwm suav nrog lubricating thiab txias lub laum me ntsis, thauj hydrostatic siab los tiv thaiv cov pa loj, thiab ruaj khov ntawm phab ntsa zoo. Qhov muaj pes tsawg leeg ntawm cov kua dej sib txawv tuaj yeem sib txawv, tab sis lawv feem ntau muaj cov kua dej hauv qab, ntxiv, thiab cov neeg sawv cev. Carboxymethyl cellulose (CMC) yog qhov tseem ceeb ntxiv rau hauv cov dej no vim nws cov khoom ntiag tug, txhim kho kev ua haujlwm thiab ua haujlwm ntawm kev khiav haujlwm.
Cov khoom ntawm Carboxymethyl cellulose
Carboxymethyl cellulose yog dej-soluble polymer muab tau los ntawm cellulose. Nws cov tshuaj kho mob muaj cov saw hlau muaj cov saw hlau nrog cov pab pawg carboxymethyl ntawm cov pab pawg hydroxyl ntawm cov glucopyranose monomers. Cov qib degree hloov pauv (DS) ntawm cov pab pawg no txiav txim siab nws solubility thiab viscosity yam ntxwv. CMC tuaj yeem tsim tawm hauv ntau cov qib, nrog cov viscosity high-viscosity thiab cov hom tsawg-viscosity hom rau cov ntawv thov tshwj xeeb.
Cov haujlwm ntawm CMC hauv Drilling kua
Viscosity tswj: CMC feem ntau siv los kho cov viscosity ntawm drilling kua. Nws pab ua kev sib sau ua ke uas ua rau kev ncua ntawm kev ncua ntawm cov kev txiav tawm, tiv thaiv lawv los ntawm kev tswm paus hauv qab ntawm qhov chaw nkaum ntawm qhov chaw nkaum. Cov cuab yeej no yog qhov tseem ceeb heev rau kev tswj cov borholes huv thiab ua haujlwm huv. Cov qib siab-viscosity ntawm CMC muaj txiaj ntsig zoo tshaj plaws hauv kev tsim cov kua viscous uas tuaj yeem nqa txiav tawm mus rau saum npoo kom zoo.
Kev tswj pom kev tswj: CMC plays Lub Luag Haujlwm Tseem Ceeb hauv kev tswj cov kua dej poob thaum lub sijhawm tho txav. Nws txo cov permeability ntawm cov lim ncuav mog qab zib tsim rau ntawm phab ntsa zoo los ntawm kev tsim cov txheej nyias nyias, cov txheej txheej qis. Qhov kev txiav txim no txo qis kev ntxig rau hauv cov kua dej sib tsoo, khaws cia qhov kev ncaj ncees ntawm qhov chaw muaj kev puas tsuaj rau hydrocarbon-cov kab mob ntawm cov chaw. Tsawg-viscosity CMC feem ntau yog siv rau nws cov kev tswj hwm kev tswj hwm zoo tshaj plaws.
Lubrication: lubricating cov khoom ntawm CMC txhim kho kev ua yeeb yam ntawm cov dej drilling, txo kev sib txhuam ntawm cov hlua laum thiab qhov zoo. Qhov kev txo qis hauv kev sib txhuam txo qis lub zog thiab luag ntawm txoj hlua laum, ua rau cov kev ua haujlwm smoother drilling thiab txo qis kev hnav thiab ua kua muag ntawm cov khoom siv drilling.
Shale Stabilization: CMC pab rau hauv cov qauv ruaj khov pom thaum lub sijhawm khiav haujlwm. Nws ua raws li kev tiv thaiv kev tiv thaiv, tsim ib qho kev thaiv ntawm cov npoo ntawm shale hais thiab tiv thaiv lawv cov hydration thiab cov kev tawg ua ke. Lub stabilization no yog qhov tseem ceeb heev nyob rau hauv kev tiv thaiv kev tsis ruaj khov, uas tuaj yeem ua rau muaj teeb meem xws li qhov sib npaug thiab daig yeeb nkab yeeb.
Qhov kub thiab txias: cmc cov khoom pov thawj zoo thermal ruaj khov, tswj nws cov khoom muaj nuj nqi dhau ntau yam kev kub ntxhov ntawm cov kev mob downhole. Qhov kev ruaj khov no ua kom ua tau zoo sib xws ntawm cov kua dej txawm tias nyob hauv ib puag ncig kub, ua rau haum rau cov dej sib sib zog nqus thiab geothermal.
Cov txiaj ntsig ntawm kev siv CMC hauv Drilling kua
Kev sib xyaw ua ke ib puag ncig: CMC yog cov biodegradable thiab nokic polymer, ua nws ib puag ncig kev xaiv cov kua muag. Nws siv cov kev cai nrog cov cai thiab cov qauv kev tswj hwm ntawm kev cuam tshuam ib puag ncig ntawm kev ua haujlwm ib puag ncig ntawm cov haujlwm sib tsoo, tshwj xeeb yog nyob rau thaj chaw rhiab.
Nqi-txiaj ntsig: CMC yog cov pheej yig txhais tau piv rau lwm cov hluavtaws polymers siv hauv cov kua hluav taws xob. Nws cov txiaj ntsig hauv cov kev ntau me me ua rau cov nqi txuag tau los ntawm kev txo qis ntawm cov khoom siv ntxiv. Ib qho ntxiv, nws lub peev xwm los txhim kho kev ua haujlwm zoo thiab txo cov khoom hnav tuaj yeem ua rau muaj kev lag luam ntxiv.
Versatility: CMC tau tshaj ntau yam ntawm cov kua dej hnyiab, suav nrog cov dej-roj av, roj-raws, thiab cov khoom siv hluav taws xob. Cov versatility no tso cai rau nws daim ntawv thov hauv cov chaw tho kev sib txawv, los ntawm onshore mus rau ntug dej thiab los ntawm kev pom zoo rau cov tsis muaj zog.
Yooj yim ntawm kev siv: lub solubility ntawm cmc hauv dej tso cai rau kev sib txuam yooj yim rau hauv cov kua dej drilling. Nws tuaj yeem txuas ntxiv rau cov kua dej yam tsis tas yuav ua rau cov txheej txheem sib xyaw, sim kom yooj yim rau cov txheej txheem kev npaj ua kom dej.
Daim Ntawv Thov Kev Pab Cuam
Dej-raws li drilling dej: hauv dej-raws li drilling dej, cm yog feem ntau siv los txhim kho cov kab viscosity, kev tswj kom muaj kev tswj hwm dej. Nws cov txiaj ntsig nyob rau hauv cov kua dej no yog cov ntaub ntawv zoo, thiab feem ntau yog siv hauv kev sib xyaw nrog lwm cov polymers thiab ntxiv kom ua tiav cov khoom xav tau kua.
Roj-raws li drilling kua: Txawm hais tias tsawg dua, cmc kuj tseem siv tau rau hauv cov roj-raws li drilling tshuab. Hauv cov ntawv thov no, CMC feem ntau tau hloov kho los txhim kho nws solubility hauv roj lossis sib xyaw rau theem ntawm aqueous ntawm ib qho emulsion. Nws lub luag haujlwm hauv cov kua dej no zoo ib yam li uas nyob rau hauv cov dej-based kua, muab viscosity thiab tswj viscration.
Kev ntsuas kub kub: rau qhov ntsuas kub hnyiab, xws li cov geothermal zoo, cov qhab nia tshwj xeeb ntawm CMC nrog ua kom tiav thermal stability yog siv. Cov kab lus no tswj hwm lawv txoj kev ua haujlwm ntawm kev nce qib kub, kom ua tau zoo ib yam kev ua tau zoo ntawm cov kua drilling.
Tsis muaj qhov drilling: hauv kev tsis sib haum drilling, suav nrog kab rov tav drilling thiab hydraulic fracturing, cml pab tswj cov kev cov nyom ntawm cov chaw zoo nkauj thiab cov chaw siab. Nws lub peev xwm los ruaj khov qhov chaw nkaum thiab tswj cov kua dej tsis yog muaj txiaj ntsig tshwj xeeb hauv cov xwm txheej no.
Cov kev sib tw thiab kev txiav txim siab
Thaum CMC muaj ntau qhov zoo hauv cov kua dej drilling, qee cov kev kev cov nyom thiab kev txiav txim siab yuav tsum tau hais kom nws ua kom zoo tshaj plaws:
Compatibility nrog lwm cov tshuaj ntxiv: qhov ua tau zoo ntawm CMC tuaj yeem cuam tshuam los ntawm muaj lwm yam kev sib ntxiv hauv cov kua dej. Kev ua tib zoo ua tib zoo tsim qauv thiab kev twv tshuaj yuav tsum ua kom muaj kev sib raug zoo thiab tsis txhob muaj kev sib cuam tshuam nrog uas tuaj yeem txo cov kua dej.
Hydration lub sij hawm: CMC yuav xav tau qee lub sijhawm ntawm cov sijhawm hydrate thiab ua tiav nws cov khoom muaj nuj nqi hauv cov kua drilling. Qhov kev sib tham no yuav tsum tau txiav txim siab thaum lub sijhawm npaj thiab kev sib xyaw kom ntseeg tau tias cov kua dej txog qhov xav tau viscrasisting.
Qhov kub thiab txias thiab phem phem: kev ua yeeb yam ntawm CMC tuaj yeem cuam tshuam los ntawm huab cua sov thiab Ph Mob. Xaiv cov qib tsim nyog ntawm CMC thiab kho cov kua dej tuaj yeem ua kom cov teebmeem no txo cov teebmeem no thiab ua kom haum raws li kev kawm sib txawv.
Carboxymethyl cellulose yog ib qho ntxiv thiab siv tau cov txiaj ntsig zoo hauv viscosity, muab cov txiaj ntsig hauv viscosity, lubrication, share stabisation, thiab qhov kub txav. Nws qhov kev sib xyaw uas ib puag ncig, kev ua tau zoo, thiab yooj yim ntawm kev siv ua rau nws muaj txiaj ntsig zoo hauv cov kua dej kom loj rau ntau cov ntawv thov. Raws li qhov kev thov kom ua haujlwm tau zoo thiab ruaj khov rau kev nce qib ntxiv kom loj hlob, lub luag haujlwm ntawm CMC hauv kev ua kom haum cov kua dej ua kom zoo. Los ntawm kev daws cov kev cov nyom cuam tshuam nrog nws siv thiab ua kom zoo dua cov kev lag luam kua dej tuaj yeem ua kom muaj kev nyab xeeb zoo dua qub.
Lub Sijhawm Post: Feb-18-2025