I-Polyanionic cellulose (PAC) i-polymer encibilika emanzini esetshenziswa kabanzi embonini ye-petroleum njengesithako soketshezi lokumba. Kuyi-polyanionic derivative ye-cellulose, ehlanganiswe ukuguqulwa kwamakhemikhali e-cellulose nge-carboxymethyl. I-PAC inezakhiwo ezinhle kakhulu njengokuncibilika kwamanzi okuphezulu, ukuzinza kwe-thermal, nokumelana ne-hydrolysis. Lezi zakhiwo zenza i-PAC ibe isithasiselo esifanele sokumba amasistimu oketshezi ekuhloleni nasekukhiqizeni i-petroleum.
Ukusetshenziswa kwe-PAC ekumba uwoyela ikakhulukazi ngenxa yekhono layo lokulawula i-viscosity kanye nezakhiwo zokuhlunga koketshezi lokumba. Ukulawulwa kwe-viscosity kuyisici esibalulekile ekusebenzeni kokumba njengoba kuthinta ukusebenza kahle nokuvikeleka kokubhola. Ukusetshenziswa kwe-PAC kusiza ukuzinzisa i-viscosity yoketshezi lokumba, okubaluleke kakhulu ekugcineni izakhiwo zokugeleza koketshezi lokumba. I-viscosity yoketshezi lokumba ilawulwa ukugxila kwe-PAC esetshenzisiwe kanye nesisindo se-molecule ye-polymer. I-molecule ye-PAC isebenza njenge-thickener, noma i-viscosifier, ngoba yandisa i-viscosity yoketshezi lokumba. I-viscosity yoketshezi lokumba incike ekugxilweni kwe-PAC, izinga lokushintshwa kanye nesisindo samangqamuzana.
Ukulawula ukuhlunga kungenye into ebalulekile ekusebenzeni kokumba. Ukusebenza kokuhlunga kuhlobene nezinga uketshezi olungena ngalo odongeni lomthombo ngesikhathi sokumba. Ukusebenzisa i-PAC kusiza ukuthuthukisa ukulawulwa kokuhlunga nokunciphisa ukungena koketshezi. Ukungena kwamanzi kungaholela ekulahlekelweni kokujikeleza, ukulimala kokubunjwa kanye nokunciphisa ukusebenza kahle kokumba. Ukwengeza i-PAC oketshezini lokumba kudala isakhiwo esifana nejeli esisebenza njengekhekhe lokuhlunga ezindongeni zomthombo. Leli khekhe lesihlungi linciphisa ukungena kwamanzi, lisiza ukugcina ubuqotho bomthombo kanye nokunciphisa ingozi yokulimala kokubunjwa.
I-PAC iphinde isetshenziselwe ukuthuthukisa izakhiwo zokucindezelwa kwe-shale koketshezi lokumba. Ukucindezelwa kwe-shale yikhono loketshezi lokumba ukuvimbela i-shale esebenzayo ekushiseni nasekuvuvukeni. Ukufakwa kwamanzi nokunwetshwa kwe-shale esebenzayo kungaholela ezinkingeni ezifana nokungaqini kahle kwe-wellbore, ukuvaleleka kwamapayipi, nokulahleka kokujikeleza kwegazi. Ukwengeza i-PAC oketshezini lokumba kudala umgoqo phakathi kwe-shale noketshezi lokumba. Lo mgoqo usiza ukugcina ubuqotho bodonga lomthombo ngokunciphisa i-hydration nokuvuvukala kwe-shale.
Okunye ukusetshenziswa kwe-PAC ekumba uwoyela kunjengesengezo sokunciphisa ukulahleka kwamanzi. Ukulahlekelwa kokuhlunga kubhekisela ekulahlekeni koketshezi lokumba lungena ekubunjweni ngesikhathi sokumba. Lokhu kulahlekelwa kungaholela ekulimaleni kokwakheka, ukulahleka kokujikeleza kanye nokunciphisa ukusebenza kahle kokumba. Ukusetshenziswa kwe-PAC kusiza ukunciphisa ukulahlekelwa koketshezi ngokudala ikhekhe lokuhlunga ezindongeni zomthombo elivimba ukugeleza koketshezi ekubunjweni. Ukulahlekelwa uketshezi okwehlisiwe kusiza ukugcina ubuqotho be-wellbore futhi kuthuthukisa ukusebenza kahle kokumba.
I-PAC ingase futhi isetshenziselwe ukuthuthukisa ukuzinza kwe-wellbore yoketshezi lokumba. Ukuzinza kwe-Wellbore kusho amandla oketshezi lokumba ukuze kugcinwe ukuqina kwe-wellbore ngesikhathi sokumba. Ukusetshenziswa kwe-PAC kusiza ukuzinzisa udonga lomthombo ngokwenza ikhekhe lokuhlunga odongeni lomthombo. Leli khekhe lesihlungi linciphisa ukungena koketshezi odongeni futhi linciphisa ingozi yokungazinzi kwe-wellbore.
Ukusetshenziswa kwe-polyanionic cellulose ekubholeni amafutha kunikeza izinzuzo eziningi. I-PAC isetshenziselwa ukulawula i-viscosity nokusebenza kokuhlunga koketshezi lokumba, ukuthuthukisa ukusebenza kokuvimbela i-shale, ukunciphisa ukulahlekelwa kokuhlunga, nokuthuthukisa ukuzinza kwe-wellbore. Ukusetshenziswa kwe-PAC ekumba uwoyela kusiza ukwandisa ukusebenza kahle futhi kunciphisa ubungozi bokulimala kokubunjwa, ukulahleka kokujikeleza kanye nokungazinzi kwe-wellbore. Ngakho-ke, ukusetshenziswa kwe-PAC kubalulekile empumelelweni yokumba nokukhiqizwa kukawoyela.
Isikhathi sokuthumela: Oct-08-2023