CMC (sodium carboxymethyl cellulose) ke motsoako oa bohlokoa oa polymer o qhibilihang ka metsi o phethang likarolo tse fapaneng tsa bohlokoa ho cheka botebong ba leoatle, haholo-holo ho lokiseng le ho ntlafatsa ts'ebetso ea maro a ho cheka. Ho cheka botebong ba leoatle ke ts'ebetso e nang le litlhoko tse phahameng haholo tsa tekheniki le maemo a thata a tikoloho. Ka nts'etsopele ea mehloli ea oli le khase ea kantle ho naha, tekanyo le botebo ba ho cheka botebong ba leoatle li ntse li eketseha butle-butle. E le kenyelletso e sebetsang ea lik'hemik'hale, CMC e ka ntlafatsa ts'ebetso, polokeho le ts'ireletso ea tikoloho ea ts'ebetso ea ho cheka.
1. Karolo ea bohlokoa mokelikeli oa ho cheka
Nakong ea ho cheka botebong ba leoatle, mokelikeli oa ho phunya o phetha mesebetsi ea bohlokoa e kang ho tšehetsa lebota la seliba, ho pholisa karolo ea ho phunya, ho tlosa li-chips le ho boloka khatello ea tlase. CMC ke taolo e sebetsang ea viscosity, moemeli oa rheological le thickener, e sebelisoang haholo ho lokiseng maro a ho cheka. Mesebetsi ea eona e ka sehloohong e bonahala likarolong tse latelang:
1.1 Ho tiisa le ho lokisa viscosity
Ha ho cheka botebong ba leoatle, ka lebaka la ho eketseha ha botebo ba metsi le khatello, mokelikeli oa ho phunya o tlameha ho ba le viscosity e itseng ho netefatsa hore o na le metsi le bokhoni ba ho jara. CMC e ka tebisa mokelikeli oa ho cheka ka nepo le ho thusa ho boloka botsitso ba mokelikeli oa ho cheka botebong le likhatellong tse fapaneng. Ka ho lokisa mahloriso a CMC, viscosity ea mokelikeli oa ho cheka o ka ntlafatsoa ho netefatsa hore mokelikeli oa ho cheka o na le litšobotsi tse nepahetseng tsa ho phalla, e le hore o ka phalla ka bolokolohi libakeng tse rarahaneng tsa leoatle le ho thibela mathata a kang ho putlama ha wellbore.
1.2 Ho ntlafatsa thepa ea rheological
Litšobotsi tsa rheological tsa mokelikeli oa ho phunya li bohlokoa ho cheka botebong ba leoatle. CMC e ka ntlafatsa mokelikeli oa mokelikeli oa ho cheka, oa etsa hore o phalle hantle ka tlas'a lefatše, oa fokotsa khohlano lipakeng tsa pompo le lebota la seliba, oa fokotsa tšebeliso ea matla le moaparo oa mochini nakong ea ho cheka, le ho lelefatsa bophelo ba ts'ebeletso ea lisebelisoa tsa ho cheka. Ho phaella moo, thepa e ntle ea rheological e ka boela ea etsa bonnete ba hore mokelikeli oa ho phunya o ka khona ho jara li-cuttings ka katleho le ho thibela ho bokella likaroloana tse tiileng mokelikeli oa ho phunya, kahoo o qoba mathata a kang ho thibela.
2. Botsitso ba Wellbore le ho thibela ho thehoa ha hydrate
Ts'ebetsong ea ho cheka botebong ba leoatle, botsitso ba liliba ke taba ea bohlokoa. Libaka tse tebileng tsa leoatle hangata li tobana le maemo a rarahaneng a jeoloji, joalo ka khatello e phahameng, mocheso o phahameng, le ho putlama ha sediment, tse ka bakang ho putlama ha liliba kapa ho lahleheloa ke mokelikeli oa ho cheka. CMC e thusa ho matlafatsa botsitso ba lebota la seliba le ho thibela ho putlama ha hantle ka ho ntlafatsa ponahalo le rheological ea mokelikeli oa ho cheka.
Ha ho cheka botebong ba leoatle, ho thehoa ha li-hydrates (joalo ka li-hydrates tsa khase ea tlhaho) le tsona ke taba e ke keng ea hlokomolohuoa. Tlas'a mocheso o tlase le maemo a khatello e phahameng, li-hydrate tsa khase ea tlhaho li thehoa habonolo nakong ea ho cheka 'me li baka ho koala ha mokelikeli oa ho phunya. Joaloka moemeli ea sebetsang hantle oa hydration, CMC e ka thibela ka nepo sebopeho sa li-hydrate, ho boloka metsi a mokelikeli oa ho phunya, le ho netefatsa tsoelo-pele e ntle ea ts'ebetso ea ho cheka.
3. Fokotsa tšusumetso ea tikoloho
Ka litlhoko tse ntseng li eketseha tsa ts'ireletso ea tikoloho, phello ea tikoloho nakong ea ho cheka botebong ba leoatle e fumane tlhokomelo e eketsehileng. Tšebeliso ea CMC ha ho cheka botebo ba leoatle ho ka fokotsa ka katleho ho ntšoa ha lintho tse kotsi mokelikeli oa ho cheka. E le thepa ea tlhaho, CMC e na le biodegradability e ntle le botsoalle ba tikoloho. Tšebeliso ea eona e ka fokotsa chefo ea mokelikeli oa ho cheka le ho fokotsa tšilafalo ea tikoloho ea leoatle.
Ho feta moo, CMC e ka boela ea ntlafatsa sekhahla sa ho sebelisoa hape ha mokelikeli oa ho cheka. Ka ho lokisa ka katleho ts'ebetso ea mokelikeli oa ho phunya, ho fokotsa tahlehelo ea mokelikeli oa ho phunya, le ho etsa bonnete ba hore mokelikeli oa ho phunya o ka sebelisoa khafetsa, moroalo tikolohong ea leoatle nakong ea ho cheka o fokotsehile. Sena se bohlokoa haholo bakeng sa nts'etsopele ea moshoelella ea ho cheka botebong ba leoatle.
4. Ntlafatsa bokhoni ba ho cheka le polokeho
Tšebeliso ea CMC ha e ntlafatse ts'ebetso ea mokelikeli oa metsi a tebileng a leoatle, empa hape e ntlafatsa ts'ebetso ea ho cheka le ts'ireletso ea ts'ebetso ho isa tekanyong e itseng. Taba ea pele, CMC e ka etsa hore mokelikeli oa ho cheka o ikamahanye hantle le maemo a fapaneng a jeoloji, oa fokotsa ts'ebetso ea phala e thibang le ho thiba nakong ea ho cheka, le ho netefatsa tsoelo-pele e ntle ea ts'ebetso ea ho cheka. Taba ea bobeli, ts'ebetso e tsitsitseng ea mokelikeli oa ho cheka e ka ntlafatsa ho nepahala ha ho cheka le ho qoba liphoso tsa ho cheka tse bakoang ke lerako le sa tsitsang la seliba kapa lintlha tse ling. Ntle le moo, CMC e ka fokotsa ka nepo kotsi ea ho feto-fetoha ha maemo a tlase, ea fokotsa maemo a kotsi joalo ka ho phatloha le ho fafatsa seretse se ka bang teng nakong ea ho cheka, le ho netefatsa polokeho ea ts'ebetso.
5. Tšebeliso e ntle ea litšenyehelo le moruo
Leha kopo eaCMCe tla eketsa litšenyehelo tse itseng, litšenyehelo tsena li batla li laoleha ha li bapisoa le ntlafatso ea katleho ea ho cheka le tiisetso ea polokeho eo e e tlisang. CMC e ka ntlafatsa botsitso ba mokelikeli oa ho cheka le ho fokotsa tlhoko ea li-additives tse ling tsa lik'hemik'hale, kahoo ea fokotsa litšenyehelo tse akaretsang tsa mokelikeli oa ho cheka. Ka nako e ts'oanang, ts'ebeliso ea CMC e ka fokotsa tahlehelo ea lisebelisoa le litšenyehelo tsa tlhokomelo, ea ntlafatsa ts'ebetso ea tlhahiso ea ts'ebetso ea ho cheka, 'me kahoo ea tlisa melemo e phahameng ea moruo.
E le kenyelletso e sebetsang hantle haholo ea lik'hemik'hale, CMC e bapala karolo ea bohlokoa ho cheka botebo ba leoatle. E ke ke ea ntlafatsa feela ts'ebetso ea mokelikeli oa ho cheka le ho ntlafatsa botsitso ba hantle, empa hape e thibela ka katleho sebopeho sa li-hydrate, ho fokotsa tšilafalo ea tikoloho, le ho ntlafatsa ts'ebetso ea ts'ebetso le polokeho. Ka nts'etsopele e tsoelang pele ea mahlale a ho cheka botebong ba leoatle le ntlafatso e tsoelang pele ea litlhoko tsa ts'ireletso ea tikoloho, ts'ebeliso ea CMC e tla ba kholo le ho feta 'me e be e' ngoe ea lisebelisoa tsa bohlokoahali tsa ho cheka botebong ba leoatle.
Nako ea poso: Dec-21-2024