I-CMC (i-sodium carboxymethyl cellulose) iyinhlanganisela ebalulekile ye-polymer encibilika emanzini edlala izindima ezibalulekile ekubholeni olwandle olujulile, ikakhulukazi ekulungiseleleni nasekusebenzeni kahle koketshezi lokubhoboza. Ukubhoboza olwandle olujulile kuwumsebenzi onezidingo zobuchwepheshe eziphakeme kakhulu kanye nezimo zemvelo ezinzima. Ngokuthuthuka kwezinsizakusebenza zikawoyela negesi zasogwini, ubukhulu kanye nokujula kokubhoboza olwandle olujulile kuyanda kancane kancane. Njengesengezo samakhemikhali esisebenzayo, i-CMC ingathuthukisa ukusebenza kahle, ukuphepha kanye nokuvikelwa kwemvelo kwenqubo yokubhoboza.
1. Indima ebalulekile ekubholeni uketshezi
Ngesikhathi sokubhoboza olwandle olujulile, uketshezi lokubhoboza ludlala imisebenzi ebalulekile njengokusekela udonga lomthombo, ukupholisa i-drill bit, ukususa ama-chips, nokugcina ingcindezi ye-downhole. I-CMC iwumlawuli we-viscosity osebenzayo, i-rheological agent kanye ne-thickener, esetshenziswa kabanzi ekulungiseleleni uketshezi lokubhoboza. Imisebenzi yayo eyinhloko ibonakala kulezi zici ezilandelayo:
1.1 Ukuqina nokulungisa i-viscosity
Ekubholeni olwandle olujulile, ngenxa yokwanda kokujula kwamanzi kanye nengcindezi, uketshezi lokubhoboza kumele lube ne-viscosity ethile ukuqinisekisa ukugeleza kwalo kanye nomthamo wokuthwala. I-CMC ingaqinisa ngempumelelo uketshezi lokubhoboza futhi isize ukugcina ukuzinza koketshezi lokubhoboza ekujuleni nasekucindezelweni okuhlukahlukene. Ngokulungisa ukuhlushwa kwe-CMC, i-viscosity yoketshezi lokubhoboza ingathuthukiswa ukuqinisekisa ukuthi uketshezi lokubhoboza lunezici zokugeleza ezifanele, ukuze lugeleze ngokukhululeka ezindaweni eziyinkimbinkimbi ezijulile zolwandle futhi luvimbele izinkinga ezifana nokuwa kwe-wellbore.
1.2 Ukuthuthukisa izakhiwo ze-rheological
Izakhiwo ze-rheological zoketshezi lokubhoboza zibalulekile ekubhobozeni olwandle olujulile. I-CMC ingathuthukisa ukugeleza koketshezi lokubhoboza, yenze lugeleze kahle ngaphansi komhlaba, inciphise ukungqubuzana phakathi kwe-drill bit nodonga olumbozwe kahle, inciphise ukusetshenziswa kwamandla kanye nokuguga kwemishini ngesikhathi sokubhoboza, futhi yandise impilo yesevisi yemishini yokubhoboza. Ngaphezu kwalokho, izakhiwo ezinhle ze-rheological zingaqinisekisa nokuthi uketshezi lokubhoboza lungathwala ngempumelelo izicucu futhi luvimbele ukuqongelela kwezinhlayiya eziqinile oketshezini lokubhoboza, ngaleyo ndlela kugwenywe izinkinga ezifana nokuvaleka.
2. Ukuqina kwe-Wellbore kanye nokuvinjelwa kokwakheka kwe-hydrate
Enkambisweni yokumba olwandle olujulile, ukuzinza kwemigodi yamanzi kuyinkinga ebalulekile. Izindawo ezijulile zolwandle zivame ukubhekana nezimo zejiyoloji eziyinkimbinkimbi, njengokucindezela okuphezulu, izinga lokushisa eliphezulu, kanye nokufakwa kwenhlabathi, okungaholela ekuweni kwemigodi yamanzi noma ukulahleka koketshezi lokumba. I-CMC isiza ekuthuthukiseni ukuzinza kodonga lwemigodi yamanzi futhi ivimbele ukuwa kwemigodi yamanzi ngokuthuthukisa i-viscosity kanye nezakhiwo ze-rheological zoketshezi lokumba amanzi.
Ekubholeni olwandle olujulile, ukwakheka kwama-hydrate (njengama-hydrate egesi yemvelo) nakho kuyinkinga engenakwenqatshwa. Ngaphansi kwezimo zokushisa okuphansi kanye nokucindezela okuphezulu, ama-hydrate egesi yemvelo akheka kalula ngesikhathi senqubo yokubhoboza futhi abangele ukuvaleka koketshezi lokubhoboza. Njenge-ejenti yokufutha esebenza kahle, i-CMC ingavimbela ngempumelelo ukwakheka kwama-hydrate, igcine ukugeleza koketshezi lokubhoboza, futhi iqinisekise inqubekela phambili ebushelelezi yemisebenzi yokubhoboza.
3. Nciphisa umthelela emvelweni
Njengoba izidingo zokuvikela imvelo ziya ngokuya ziqina, umthelela emvelweni ngesikhathi sokumba olwandle olujulile uthole ukunakwa okwengeziwe. Ukusetshenziswa kwe-CMC ekumba olwandle olujulile kunganciphisa ngempumelelo ukukhishwa kwezinto eziyingozi oketshezini lokumba. Njengezinto zemvelo, i-CMC inokubola okuhle kanye nobungane nemvelo. Ukusetshenziswa kwayo kunganciphisa ubuthi boketshezi lokumba futhi kunciphise ukungcola ohlelweni lwemvelo lwasolwandle.
Ngaphezu kwalokho, i-CMC ingathuthukisa nezinga lokuphinda kusetshenziswe uketshezi lokubhoboza. Ngokulungisa ngempumelelo ukusebenza koketshezi lokubhoboza, ukunciphisa ukulahleka koketshezi lokubhoboza, nokuqinisekisa ukuthi uketshezi lokubhoboza lungasetshenziswa kabusha ngokuphindaphindiwe, umthwalo obhekene nemvelo yasolwandle ngesikhathi senqubo yokubhoboza uyancishiswa. Lokhu kubaluleke kakhulu ekuthuthukisweni okusimeme kokubhoboza olwandle olujulile.
4. Thuthukisa ukusebenza kahle kokumba kanye nokuphepha
Ukusetshenziswa kwe-CMC akugcini nje ngokuthuthukisa ukusebenza koketshezi lokumba olujulile, kodwa futhi kuthuthukisa ukusebenza kahle kokumba kanye nokuphepha kokusebenza ngezinga elithile. Okokuqala, i-CMC ingenza uketshezi lokumba luzivumelanise kangcono nezimo ezahlukene zejiyoloji, inciphise isimo sepayipi elibambekile kanye nokuvaleka ngesikhathi sokumba, futhi iqinisekise inqubekela phambili ebushelelezi yemisebenzi yokumba. Okwesibili, ukusebenza kahle koketshezi lokumba okuzinzile kungathuthukisa ukunemba kokumba futhi kugweme ukwehluleka kokumba okubangelwa udonga lomthombo olungazinzile noma ezinye izici. Ngaphezu kwalokho, i-CMC inganciphisa ngempumelelo ingozi yokushintshashintsha kwengcindezi yembobo ephansi, inciphise izimo eziyingozi njengokuqhuma kanye nokufuthwa ngodaka okungenzeka ngesikhathi sokumba, futhi iqinisekise ukuphepha kwemisebenzi.
5. Ukusebenza kahle kwezindleko kanye nokonga
Nakuba ukusetshenziswa kweI-CMCkuzokwandisa izindleko ezithile, lezi zindleko ziyalawuleka uma kuqhathaniswa nokuthuthuka kokusebenza kahle kokumba kanye nokuqinisekiswa kokuphepha okulethayo. I-CMC ingathuthukisa ukuzinza koketshezi lokumba futhi inciphise isidingo sezinye izithasiselo zamakhemikhali, ngaleyo ndlela inciphise izindleko eziphelele zoketshezi lokumba. Ngesikhathi esifanayo, ukusetshenziswa kwe-CMC kunganciphisa izindleko zokulahlekelwa yimishini kanye nokugcinwa kwayo, kuthuthukise ukusebenza kahle kokukhiqiza kwemisebenzi yokumba, futhi ngaleyo ndlela kulethe izinzuzo eziphezulu kwezomnotho.
Njengesengezo samakhemikhali esisebenza kahle kakhulu, i-CMC idlala indima ebalulekile ekubholeni olwandle olujulile. Ayikwazi nje kuphela ukuthuthukisa ukusebenza koketshezi lokubhoboza nokuthuthukisa ukuzinza kwe-wellbore, kodwa futhi ivimbela ngempumelelo ukwakheka kwama-hydrate, inciphise ukungcola kwemvelo, futhi ithuthukise ukusebenza kahle nokuphepha kokusebenza. Ngokuthuthuka okuqhubekayo kobuchwepheshe bokubhoboza olwandle olujulile kanye nokuthuthukiswa okuqhubekayo kwezimfuneko zokuvikela imvelo, ukusetshenziswa kwe-CMC kuzoba kukhulu kakhulu futhi kube ngenye yezinto ezibalulekile ekubholeni olwandle olujulile.
Isikhathi sokuthunyelwe: Disemba-21-2024