Polyanionic cellulose (PAC) ke polima e qhibilihang ka metsing e atisang ho sebelisoa indastering ea oli le khase e le kenyelletso ea mokelikeli oa ho cheka.PAC e tsoa ho cellulose, e leng karolo ea mantlha ea mabota a lisele tsa semela.PAC e sebetsa haholo ho ntlafatseng thepa ea rheological ea maro a ho cheka, joalo ka viscosity, taolo ea tahlehelo ea mokelikeli, le thepa ea ho emisa.Sengoliloeng sena se tla tšohla thepa, lits'ebetso, le melemo ea PAC marong a ho cheka peterole.

Thepa ea Polyanionic Cellulose

PAC ke polima e qhibilihang ka metsing e tsoang ho selulose.Ke motsoako o phahameng oa boima ba limolek'hule o nang le lihlopha tsa carboxymethyl le hydroxyl.The degree of substitution (DS) ea PAC e bolela palo e tloaelehileng ea lihlopha tsa carboxymethyl ka unit ea anhydroglucose ea mokokotlo oa selulose.Boleng ba DS ke paramethara ea bohlokoa e amang thepa ea PAC, joalo ka ho solubility ha eona, viscosity, le botsitso ba mocheso.

PAC e na le sebopeho se ikhethileng se e lumellang ho sebelisana le limolek'hule tsa metsi le li-polymer tse ling ka marong a ho cheka.Limolek'hule tsa PAC li theha marang-rang a mahlakore a mararo a li-hydrogen bond le litšebelisano tsa electrostatic le limolek'hule tsa metsi le li-additives tse ling tsa polymeric, tse kang xanthan gum kapa guar gum.Sebopeho sena sa marang-rang se matlafatsa viscosity le boits'oaro bo fokolang ba ho cheka metsi a ho cheka, e leng thepa ea bohlokoa bakeng sa ts'ebetso e sebetsang ea ho cheka.

Lisebelisoa tsa Polyanionic Cellulose

PAC ke polymer e feto-fetohang e ka sebelisoang lits'ebetsong tse fapaneng tsa mokelikeli oa metsi, joalo ka seretse se thehiloeng metsing, seretse se thehiloeng ho oli, le seretse se entsoeng ka maiketsetso.PAC e sebelisoa hangata liretseng tse thehiloeng metsing ka lebaka la ho qhibiliha ha eona hantle ha metsi le ho lumellana le lisebelisoa tse ling.PAC e eketsoa ho maro a ho cheka ka bongata ho tloha ho 0.1% ho isa ho 1.0% ka boima ba 'mele, ho itšetlehile ka maemo a khethehileng a ho cheka le lipakane.

PAC e sebelisoa ho cheka maro bakeng sa lits'ebetso tse 'maloa, ho kenyelletsa:

1. Viscosification: PAC e eketsa viscosity ea maro a chekang, a thusang ho emisa le ho tsamaisa lintho tse sehiloeng le tse ling tse tiileng ho tsoa ka sekoting.PAC e boetse e thusa ho boloka bots'epehi ba seliba ka ho thibela tahlehelo ea mokelikeli hore e kene ka har'a libopeho tse kenang.
2. Taolo ea tahlehelo ea metsi: PAC e sebetsa joalo ka ntho e laolang tahlehelo ea mokelikeli ka ho etsa kuku e tšesaane e ke keng ea qoelisoa leboteng la borehole.Kaka ena ea filthara e thibela tahlehelo ea mokelikeli oa ho cheka sebopeho, e ka bakang tšenyo ea sebopeho le ho fokotsa ts'ebetso ea ts'ebetso ea ho cheka.
3. Thibelo ea Shale: PAC e na le sebopeho se ikhethileng se e lumellang ho ipapisa le liminerale tsa letsopa le libopeho tsa shale.Phatlalatso ena e fokotsa ho ruruha le ho hasana ha libopeho tsa shale, tse ka bakang ho se tsitse ha wellbore le mathata a mang a ho cheka.

Melemo ea Polyanionic Cellulose

PAC e fana ka melemo e mengata mesebetsing ea ho cheka, ho kenyelletsa:

1. Bokhoni bo ntlafetseng ba ho cheka: PAC e ntlafatsa thepa ea rheological ea maro a ho cheka, joalo ka viscosity le taolo ea tahlehelo ea mokelikeli.Sena se ntlafatsa katleho ea mesebetsi ea ho cheka ka ho fokotsa nako le litšenyehelo tse hlokahalang bakeng sa ho cheka seliba.
2. Tšireletso ea sebopeho: PAC e thusa ho boloka botsitso ba seliba ka ho thibela tahlehelo ea mokelikeli le ho fokotsa tšenyo ea sebopeho.Sena se sireletsa sebopeho mme se fokotsa kotsi ea ho se tsitse ha wellbore le mathata a mang a ho cheka.
3. Ho tsamaellana le tikoloho: PAC ke polima e qhibilihang ka metsing e khonang ho senyeha le ho lumellana le tikoloho.Sena se etsa hore e be sehlomathiso se ratoang bakeng sa maro a ho cheka libakeng tse sa tsotelleng tikoloho.

Qetello

Polyanionic cellulose ke tlatsetso e sebetsang haholo marong a ho cheka peterole ka lebaka la thepa ea eona e ikhethang le lits'ebetso tse fapaneng.PAC e ntlafatsa thepa ea rheological ea maro a ho cheka, e ntlafatsa ts'ebetso ea ho cheka, le ho sireletsa sebopeho ho tsoa tšenyo.PAC e boetse e lumellana le tikoloho 'me e ratoa libakeng tse hlokolosi.Tšebeliso ea PAC mekelikeli ea ho cheka e lebelletsoe ho tsoela pele ho hola nakong e tlang ha indasteri ea oli le khase e ntse e tsoela pele ho batla mahlale a macha a ho cheka le mekhoa ea ho eketsa tlhahiso le ho fokotsa litšenyehelo.