Polyanionic Cellulose (PAC) ke motsoako oa selulose o qhibilihang ka metsing o sebelisoang haholo ho cheka oli, haholo-holo bakeng sa ho lokisa mokelikeli oa ho cheka. E fetohile tlatsetso ea bohlokoa tsamaisong ea mokelikeli oa ho cheka ka lebaka la thepa ea eona e phahameng, e kang ho ntlafatsa viscosity, ho fokotsa tahlehelo ea mokelikeli, botsitso le tšireletso ea tikoloho.
1. Fokotsa tahlehelo ea mokelikeli
Taolo ea tahlehelo ea mokelikeli ke mosebetsi oa bohlokoa ho cheka oli. Ha mokelikeli oa ho cheka o kopana le sebopeho nakong ea ts'ebetso ea ho phunya, e ka 'na ea baka sebopeho sa likuku tsa seretse le ho hlasela ha filtrate ho thehoa, ho fella ka tšenyo ea sebopeho le ho ama bokhoni ba ho cheka. PAC e atleha ho fokotsa tahlehelo ea mokelikeli le tlhaselo ea filtrate sebopeho ka ho etsa filimi e sireletsang mokelikeli oa ho phunya, kahoo e fokotsa tšilafalo ea sebopeho. Thepa ena e thusa ho ntlafatsa botsitso ba liliba le ho sireletsa libopeho tsa oli le khase.
Molao-motheo
PAC e qhibiliha ka metsing ho etsa tharollo ea colloidal e nang le viscosity e phahameng. Ha mokelikeli oa ho cheka o kopana le sebopeho, limolek'hule tsa PAC li ka etsa kaka e teteaneng ea seretse holim'a sebopeho ho thibela ho kenella ka ho eketsehileng ha mohato oa mokelikeli. Kaka ena ea seretse e na le ho feto-fetoha ha maemo le ho thatafala, 'me e khona ho mamella phapang e kholo ea khatello, kahoo e fokotsa tahlehelo ea filtration ka katleho.
2. Eketsa viscosity ea mokelikeli oa ho cheka
Ntlafatso ea viscosity ke mosebetsi o mong oa bohlokoa oa PAC mokelikeli oa ho cheka. Mokelikeli oa ho cheka o hloka ho ba le viscosity e itseng ho khutlisetsa li-cuttings morao, e le ho netefatsa bohloeki ba seliba le ho boloka botsitso ba ho cheka. Jwalo ka sesebediswa sa viscosity, PAC e ka eketsa viscosity ea mokelikeli oa ho cheka, ea ntlafatsa bokhoni ba mokelikeli oa ho cheka ho jara li-cuttings, le ho khothaletsa ho khutla le ho tsoa ha li-cuttings.
Molao-motheo
Limolek'hule tsa PAC li qhibiliha ka har'a mokelikeli oa ho cheka ho etsa sebopeho sa ketane ea polymer, e leng se eketsang ho hanyetsa mokelikeli ka hare. Sebopeho sena se ka eketsa haholo viscosity e bonahalang le boleng ba lihlahisoa tsa mokelikeli oa ho cheka, 'me oa ntlafatsa bokhoni ba oona ba ho jara le ho emisa li-cuttings. Ka nako e ts'oanang, phello ea ntlafatso ea viscosity ea PAC e ntse e sebetsa tlas'a mocheso o phahameng le maemo a khatello e phahameng, 'me e loketse ho cheka liliba tse tebileng le maemo a thata a jeoloji.
3. Ntlafatsa botsitso ba seliba
Botsitso ba Wellbore ke taba e hlokang tlhokomelo e khethehileng nakong ea ho cheka. Mokelikeli oa ho cheka o tlameha ho khona ho tsitsisa lebota la seliba ho thibela lerako la seliba ho putlama. Litlamorao tse kopaneng tsa PAC tsa ho fokotsa tlhoekiso le ho eketseha ha viscosity mokelikeli oa ho cheka li ka matlafatsa botsitso ba hantle.
Molao-motheo
PAC e thibela mokelikeli oa ho cheka hore o se ke oa kena sebopeho ka ho etsa lera le tiileng la kaka ea seretse holim'a lerako la seliba. Ka nako e ts'oanang, viscosity ea eona e ka ntlafatsa ho khomarela lebota la seliba le ho fokotsa ho hlahisa li-microcracks ka sebopeho, kahoo ho ntlafatsa botsitso ba mochine oa seliba. Ho phaella moo, PAC e ka boela ea ntlafatsa thixotropy ea mokelikeli oa ho phunya, e le hore e thehe matla a ts'ehetso a matla ha a eme, 'me a boloke metsi a loketseng ha a phalla, a tsitsisa lerako la seliba ka ho eketsehileng.
4. Litšobotsi tsa tšireletso ea tikoloho
Ka ntlafatso ea litlhoko tsa ts'ireletso ea tikoloho, lik'hemik'hale tse sebelisoang marong a ho cheka li hloka ho ba le ts'ebetso e ntle ea ts'ireletso ea tikoloho. PAC ke sehlahisoa se fetotsoeng sa cellulose ea tlhaho, e nang le biodegradability e ntle le chefo e tlase, e fihlelang litlhoko tsa ts'ireletso ea tikoloho.
Molao-motheo
PAC ke sehlahisoa se fetotsoeng ka lik'hemik'hale se ipapisitseng le selulose ea tlhaho, ha se na lintho tse chefo, 'me se ka senngoa ke likokoana-hloko tse tikolohong ea tlhaho. Ha ho bapisoa le li-polymers tsa maiketsetso, PAC ha e na tšusumetso e fokolang tikolohong 'me e lumellana haholoanyane le litlhoko tsa ho cheka ka botala. Tšobotsi ena e fana ka monyetla o hlakileng libakeng tse sa tsotelleng tikoloho le ho cheka ka ntle ho leoatle.
5. Mocheso le ho hanyetsa letsoai
Libakeng tse futhumetseng le tse nang le letsoai le lengata, letsopa la setso le li-polymers hangata li na le bothata ba ho boloka botsitso ba maro a ho cheka, ha PAC e bonts'a mocheso o motle le ho hanyetsa letsoai 'me e ka boloka katleho ea maro a ho cheka libakeng tse rarahaneng.
Molao-motheo
Lihlopha tsa anionic (tse kang lihlopha tsa carboxyl) li kenngoa ka har'a sebopeho sa limolek'hule tsa PAC. Lihlopha tsena li ka fapanyetsana li-ion ka li-ion tsa letsoai sebakeng se nang le letsoai le phahameng ho boloka botsitso ba sebopeho sa limolek'hule. Ka nako e ts'oanang, PAC e na le botsitso bo phahameng ba mocheso 'me e ke ke ea senyeha haholo tlas'a maemo a phahameng a mocheso, ho etsa bonnete ba hore ho na le bokhoni ba ho laola le ho hloekisa ha mokelikeli oa ho cheka. Ka hona, PAC e na le litlamorao tse ntle tsa ts'ebeliso litsing tsa metsi a letsoai le liliba tse nang le mocheso o phahameng.
6. Ntlafatsa rheology ea mokelikeli oa ho cheka
Rheology e bua ka phallo le litšobotsi tsa deformation tsa maro a ho cheka tlas'a matla a ho kuta. PAC e ka fetola rheology ea maro a ho cheka metsi ho etsa bonnete ba hore a na le matla a matle a ho jara le ho phalla ka bolokolohi ka har'a seliba nakong ea ho cheka.
Molao-motheo
PAC e sebelisana le likarolo tse ling tsa mokelikeli oa ho phunya ho etsa mohaho o rarahaneng oa marang-rang le ho fetola boleng ba lihlahisoa le litšobotsi tsa ho fokotsa ho kuta tsa mokelikeli oa ho phunya. Phello ena e laolang e nolofalletsa mokelikeli oa ho cheka hore o bontše bokhoni bo botle ba ho jara majoe le metsi nakong ea ho cheka, haholo-holo ka mekhoa e rarahaneng le liliba tse nang le khatello e phahameng.
7. Tlhahlobo ea linyeoe
Lits'ebetsong tse sebetsang, PAC e sebelisoa haholo lits'ebetsong tse fapaneng tsa mokelikeli oa ho cheka. Mohlala, morerong oa ho cheka seliba se tebileng, ho ile ha sebelisoa mokelikeli o entsoeng ka metsi o nang le PAC. Liphetho li bonts'itse hore PAC e fokolitse haholo tahlehelo ea ho sefa ha mokelikeli oa ho cheka, ea matlafatsa botsitso ba seliba, ea ntlafatsa ts'ebetso ea ho cheka, le ho fokotsa sekhahla sa likotsi tse bakoang ke tšilafalo ea sebopeho. Ka nako e ts'oanang, PAC le eona e sebelitse hantle ho cheka ka metsing, 'me e ntse e khona ho laola ka nepo ts'ebetso ea mokelikeli o chekang tlas'a letsoai le phahameng le maemo a mocheso o phahameng ho netefatsa tsoelo-pele e ntle ea ts'ebetso ea ho cheka.
Tšebeliso ea cellulose ea polyanionic ha ho cheka oli e bonahala haholo-holo litšobotsing tsa eona tse babatsehang tsa ho fokotsa tahlehelo ea ho hloekisa, ho eketsa viscosity, ho ntlafatsa botsitso ba hantle le ho sireletsa tikoloho. Tšebeliso ea eona metsing a ho cheka a thehiloeng metsing le ka oli ha e ntlafatse bokhoni ba ho cheka feela le ho fokotsa litekanyetso tsa likotsi tsa mekoting, empa e boetse e na le botsoalle ba tikoloho 'me e thusa ho finyella sepheo sa ho phunya botala. Tlas'a maemo a rarahaneng a jeoloji le mocheso o phahameng le maemo a khatello e phahameng, mocheso oa PAC le ho hanyetsa letsoai ho tsoela pele ho totobatsa bohlokoa ba eona ho chekong ha oli. Ka hona, cellulose ea polyanionic e nka boemo ba bohlokoa ho theknoloji ea sejoale-joale ea ho cheka oli.
Nako ea poso: Jun-14-2024