IHydroxyethyl cellulose (HEC) iyi-polymer ebalulekile encibilika emanzini edlala indima ebalulekile ekumbiweni kukawoyela. Njengento ephuma ku-cellulose enezakhiwo eziyingqayizivele zomzimba namakhemikhali, i-HEC isetshenziswa kakhulu kumaphrojekthi wokugaya uwoyela nokukhiqiza uwoyela.
1. Izakhiwo eziyisisekelo ze-hydroxyethyl cellulose (HEC)
I-Hydroxyethyl cellulose (HEC) iyinhlanganisela ye-polymer engeyona i-ionic emanzini etholwe ngokuguqulwa kwamakhemikhali kwe-cellulose yemvelo. Ngokwethula amaqembu e-hydroxyethyl esakhiweni samangqamuzana e-cellulose, i-HEC ine-hydrophilicity eqinile, ngakho-ke ingancibilika emanzini ukuze yenze isixazululo se-colloidal nge-viscosity ethile. I-HEC inesakhiwo samangqamuzana esizinzile, ukumelana nokushisa okuqinile, izakhiwo zamakhemikhali angasebenzi kahle, futhi ayinabuthi, ayinaphunga, futhi inokuvumelana okuhle kwe-biocompatibility. Lezi zici zenza i-HEC ibe isithasiselo samakhemikhali esifanelekile ekubholeni uwoyela.
2. Indlela ye-HEC yokumba uwoyela
2.1 Ukulawula i-viscosity yokumba uketshezi
Ngesikhathi sokumba uwoyela, uketshezi lokumba (okwaziwa nangokuthi udaka lokumba) luwuketshezi olubalulekile olusebenzayo, olusetshenziswa kakhulu ukupholisa nokugcobisa i-drill bit, ukuthwala okusikiwe, ukusimamisa udonga lomthombo, nokuvimbela ukuqhunyiswa. I-HEC, njenge-thickener ne-rheology modifier, ingathuthukisa umphumela wayo wokusebenza ngokulungisa i-viscosity kanye nezakhiwo ze-rheological zoketshezi lokumba. Ngemuva kokuthi i-HEC incibilike oketshezini lokumba, yakha uhlaka lwenethiwekhi olunezinhlangothi ezintathu, oluthuthukisa kakhulu i-viscosity yoketshezi lokumba, ngaleyo ndlela ithuthukise umthamo wokuthwala isihlabathi woketshezi lokumba, iqinisekise ukuthi ukusika kungakhishwa kahle phansi komthombo, nokuvimbela ukuvinjwa kwemithombo.
2.2 Ukuzinza kodonga lomthombo kanye nokuvimbela ukubhidlika komthombo
Ukuzinza kodonga kuyinkinga ebucayi kakhulu kubunjiniyela bokumba. Ngenxa yobunzima besakhiwo se-stratum esingaphansi komhlaba kanye nomehluko wengcindezi owenziwe ngesikhathi sokumba, udonga lomthombo luvame ukuthambekela ekuweni noma ukungazinzi. Ukusetshenziswa kwe-HEC ekubholeni uketshezi kungathuthukisa ngempumelelo ikhono lokulawula ukucwenga koketshezi lokumba, kunciphise ukulahleka kokuhlunga koketshezi lokumba kuze kube sekwakhekeni, bese kwakha ikhekhe lodaka eliminyene, kuxhumeke ngempumelelo imifantu emincane yodonga lomthombo, futhi kuvimbele ukuvuleka. kahle udonga ekubeni lungazinzi. Lo mphumela ubaluleke kakhulu ekugcineni ubuqotho bodonga lomthombo kanye nokuvimbela ukuwa kahle, ikakhulukazi ekubunjweni okunamandla okungena.
2.3 Uhlelo oluphansi lwesigaba esiqinile kanye nezinzuzo zemvelo
Inani elikhulu lezinhlayiya eziqinile ngokuvamile zengezwa ohlelweni lwendabuko lokumba uketshezi ukuze kuthuthukiswe i-viscosity nokuzinza koketshezi lokumba. Kodwa-ke, izinhlayiya ezinjalo eziqinile zijwayele ukugqokwa emishinini yokumba futhi zingase zidale ukungcoliswa kwechibi ekukhiqizweni komthombo kawoyela olandelayo. Njenge-thickener ephumelelayo, i-HEC ingagcina i-viscosity efanelekile kanye nezakhiwo ze-rheological zoketshezi lokumba ngaphansi kwezimo zokuqukethwe okuqinile okuphansi, ukunciphisa ukuguga kwemishini, futhi kunciphise umonakalo endaweni yokugcina amanzi. Ngaphezu kwalokho, i-HEC inokubola okuhle kwe-biodegradability futhi ngeke ibangele ukungcoliswa okuhlala njalo emvelweni. Ngakho-ke, njengoba kunezidingo eziqinile zokuvikela imvelo namuhla, izinzuzo zokusetshenziswa kwe-HEC zisobala kakhulu.
3. Izinzuzo ze-HEC ekumbaleni uwoyela
3.1 Ukuncibilika kahle kwamanzi kanye nomphumela wokujiya
I-HEC, njenge-polymer encibilikayo emanzini, inokuncibilika okuhle ngaphansi kwezimo ezihlukene zekhwalithi yamanzi (njengamanzi ahlanzekile, amanzi anosawoti, njll.). Lokhu kwenza i-HEC isetshenziswe ezindaweni ezihlukahlukene eziyinkimbinkimbi zejoloji, ikakhulukazi ezindaweni ezinosawoti ophakeme, futhi isengakwazi ukugcina ukusebenza okuhle kokujiya. Umphumela wawo wokuqina ubalulekile, ongathuthukisa ngempumelelo izakhiwo ze-rheological zoketshezi lokumba, unciphise inkinga yokubeka ama-cuttings, futhi uthuthukise ukusebenza kahle kokumba.
3.2 Izinga lokushisa elihle kakhulu nokumelana nosawoti
Emgodini ojulile kanye ne-ultra-deep, izinga lokushisa lokubunjwa nokucindezela kuphezulu, futhi uketshezi lokubhoboza kuthinteka kalula ukushisa okuphezulu nokucindezela okuphezulu futhi kulahlekelwe ukusebenza kwawo kwangempela. I-HEC inesakhiwo samangqamuzana esizinzile futhi ingagcina i-viscosity yayo kanye nezakhiwo ze-rheological emazingeni okushisa aphezulu kanye nezingcindezi. Ukwengeza, ezindaweni ezakha usawoti omningi, i-HEC isengakwazi ukugcina umphumela omuhle wokujiya ukuze uvimbele uketshezi lokumba ukuthi lungafinyeleli noma lungasebenzi ngenxa yokuphazanyiswa kwe-ion. Ngakho-ke, i-HEC inokushisa okuhle kakhulu nokumelana nosawoti ngaphansi kwezimo eziyinkimbinkimbi ze-geological futhi isetshenziswa kabanzi emithonjeni ejulile kanye namaphrojekthi anzima okumba.
3.3 Ukusebenza kahle kokugcoba
Izinkinga zokungqubuzana ngesikhathi sokumba nazo ziyisici esibalulekile esithinta ukusebenza kahle kokumba. Njengenye yezinto zokuthambisa oketshezini lokumba, i-HEC inganciphisa ngokuphawulekayo i-coefficient yokungqubuzana phakathi kwamathuluzi okumba nezindonga zemithombo, inciphise ukuguga kwemishini, futhi yandise impilo yesevisi yamathuluzi okubhola. Lesi sici sigqame kakhulu emithonjeni evundlile, emithonjeni ethambekele nezinye izinhlobo zemithombo, okusiza ukunciphisa ukuvela kokuhluleka kwemigodi kanye nokwenza ngcono ukusebenza kahle okuphelele kokusebenza.
4. Ukusetshenziswa okungokoqobo kanye nezinyathelo zokuphepha ze-HEC
4.1 Indlela yokudosa nokulawula ukugxilisa ingqondo
Indlela yokudosa ye-HEC ithinta ngqo ukuhlakazeka kwayo kanye nomphumela wokuhlakazeka oketshezini lokumba. Ngokuvamile, i-HEC kufanele yengezwe kancane kancane kuketshezi lokumba ngaphansi kwezimo ezinyakazayo ukuze kuqinisekiswe ukuthi lungancibilika ngokulinganayo futhi kugwenywe ukuhlangana. Ngesikhathi esifanayo, ukugxila kokusetshenziswa kwe-HEC kudinga ukulawulwa ngokunengqondo ngokuvumelana nezimo zokubunjwa, izidingo zokusebenza koketshezi lokumba, njll. Ukugxila okuphezulu kakhulu kungase kubangele uketshezi lokumba lube ne-viscous kakhulu futhi kuthinte uketshezi; kuyilapho ukugxila kuphansi kakhulu kungase kungakwazi ukusebenzisa ngokugcwele imiphumela yako yokuqina kanye nokuthambisa. Ngakho-ke, uma usebenzisa i-HEC, kufanele ithuthukiswe futhi ilungiswe ngokuvumelana nezimo zangempela.
4.2 Ukuhambisana nezinye izithasiselo
Ezinhlelweni zangempela zokumba uketshezi, izinhlobonhlobo zezithasiselo zamakhemikhali zivame ukungezwa ukuze kuzuzwe imisebenzi ehlukene. Ngakho-ke, ukuhambisana phakathi kwe-HEC nezinye izithasiselo nakho kuyisici esidinga ukucatshangelwa. I-HEC ibonisa ukuhambisana okuhle nezithasiselo eziningi ezivamile zokugaya uketshezi ezifana nezinciphisi zokulahlekelwa uketshezi, izithambisi, iziqinisi, njll., kodwa ngaphansi kwezimo ezithile, ezinye izithasiselo zingathinta umphumela wokujiya noma ukuncibilika kwe-HEC. Ngakho-ke, lapho uklama ifomula, kuyadingeka ukucabangela ngokugcwele ukusebenzisana phakathi kwezithasiselo ezihlukahlukene ukuze kuqinisekiswe ukuzinza nokuvumelana kokusebenza koketshezi lokumba.
4.3 Ukuvikelwa kwemvelo kanye nokwelashwa koketshezi olulahlwayo
Ngokukhula kwemithetho eqinile yokuvikela imvelo, ubungane bemvelo boketshezi lokumba sebuthole ukunakwa kancane kancane. Njengempahla ene-biodegradability enhle, ukusetshenziswa kwe-HEC kunganciphisa ngempumelelo ukungcoliswa koketshezi lokumba endaweni ezungezile. Nokho, ngemva kokuba ukumba sekuqediwe, uketshezi olulahlwayo oluqukethe i-HEC lusadinga ukuphathwa kahle ukuze kugwenywe imiphumela emibi endaweni ezungezile. Enqubweni yokwelashwa koketshezi olubi, izindlela zokwelapha zesayensi ezifana nokubuyiswa koketshezi olungcolile kanye nokucekelwa phansi kufanele kwamukelwe ngokuhambisana nemithetho yendawo yokuvikela imvelo kanye nezidingo zobuchwepheshe ukuze kuqinisekiswe ukuthi umthelela endaweni uyancishiswa.
I-Hydroxyethyl cellulose (HEC) idlala indima ebalulekile ekumbiweni kwamafutha. Ngokuncibilika kwamanzi okuhle kakhulu, ukuqina, izinga lokushisa nosawoti ukumelana nomphumela wokugcoba, inikeza isisombululo esinokwethenjelwa sokuthuthukisa ukusebenza koketshezi lokumba. Ngaphansi kwezimo eziyinkimbinkimbi zokuma komhlaba kanye nezindawo zokusebenza ezinokhahlo, ukusetshenziswa kwe-HEC kungathuthukisa ukusebenza kahle kokumba, kunciphise ukuguga kwemishini, futhi kuqinisekise ukuzinza kwe-wellbore. Ngokuthuthuka okuqhubekayo kobuchwepheshe bemboni kawoyela, amathuba okusetshenziswa kwe-HEC ekumbiweni kukawoyela azoba banzi.
Isikhathi sokuthumela: Sep-20-2024