I-Polyanionic Cellulose (PAC) iphuma ku-cellulose encibilika emanzini esetshenziswa kakhulu ekubholeni uwoyela, ikakhulukazi ukulungisa uketshezi lokumba. Sekuyisengezo esibalulekile ohlelweni lwe-drilling fluid ngenxa yezakhiwo zalo eziphakeme, njengokuthuthukiswa kwe-viscosity, ukunciphisa ukulahlekelwa uketshezi, ukuzinza nokuvikelwa kwemvelo.
1. Yehlisa ukulahlekelwa uketshezi
Ukulawulwa kokulahlekelwa uketshezi kuwumsebenzi obalulekile ekubholeni uwoyela. Lapho uketshezi lokumba luthinta ukwakheka ngesikhathi sokumba, kungabangela ukwakheka kwekhekhe lodaka nokuhlasela kwe-filtrate ekubunjweni, okuholela ekulimaleni kokwakheka futhi kuthinte ukusebenza kahle kokumba. I-PAC yehlisa ngempumelelo ukulahlekelwa uketshezi kanye nokuhlasela kwe-filtrate ekubunjweni ngokwenza ifilimu evikelayo oketshezini lokumba, ngaleyo ndlela yehlise ukungcoliswa kokwakheka. Le ndawo isiza ukuthuthukisa ukuzinza kwe-wellbore futhi ivikele ukwakheka kukawoyela negesi.
Isimiso
I-PAC incibilika emanzini ukwenza isixazululo se-colloidal esine-viscosity ephezulu. Lapho uketshezi lokumba luthinta ukwakheka, ama-molecule e-PAC angakha ikhekhe lodaka eliminyene ebusweni bokwakheka ukuze avimbele ukungena okwengeziwe kwesigaba soketshezi. Leli khekhe lodaka linokuguquguquka okuhle nokuqina, futhi lingakwazi ukumelana nokuhluka okukhulu kwengcindezi, ngaleyo ndlela kunciphise ngempumelelo ukulahlekelwa kokuhlunga.
2. Khulisa i-viscosity yoketshezi lokumba
Ukuthuthukiswa kwe-viscosity kungomunye umsebenzi obalulekile we-PAC oketshezini lokumba. Uketshezi lokubhoboza ludinga ukuba ne-viscosity ethile ukuze kubuyiselwe izingcezu, ukuze kuqinisekiswe ukuhlanzeka komthombo kanye nokugcina ukuqina kokumba. Njengesithuthukisi se-viscosity, i-PAC ingakhuphula i-viscosity yoketshezi lokumba, ithuthukise ikhono loketshezi lokumba ukuze luthwale izinqamuleli, futhi ikhuthaze ukubuya nokuphuma kokusikwa.
Isimiso
Ama-molecule e-PAC ancibilika oketshezini lokumba ukuze akhe ukwakheka kweketango le-polymer, okwandisa ukumelana kwangaphakathi koketshezi. Lesi sakhiwo singakhuphula kakhulu i-viscosity ebonakalayo kanye nenani lesivuno soketshezi lokumba, futhi sithuthukise ikhono laso lokuthwala nokumisa ukusikwa. Ngesikhathi esifanayo, umthelela wokuthuthukisa i-viscosity we-PAC usasebenza ngaphansi kwezimo zokushisa eziphezulu nezimo zengcindezi ephezulu, futhi ulungele ukumba umthombo ojulile nezimo zejoloji eziyinkimbinkimbi.
3. Thuthukisa ukuzinza kwe-wellbore
Ukuzinza kwe-Wellbore kuyindaba edinga ukunakwa okukhethekile ngesikhathi sokumba. Uketshezi lokumba kufanele lukwazi ukusimamisa udonga lomthombo ukuze luvimbele ukudilika kodonga lomthombo. Imiphumela ehlanganisiwe ye-PAC yokunciphisa ukucwenga nokwandisa i-viscosity oketshezini lokumba ingathuthukisa ngempumelelo ukuqina kwe-wellbore.
Isimiso
I-PAC ivimbela uketshezi lokumba ukuthi lungangeni ekwakhekeni ngokwenza ungqimba lwekhekhe lodaka oluqinile ebusweni bodonga lomthombo. Ngesikhathi esifanayo, i-viscosity yayo ingathuthukisa ukunamathela kwendawo yodonga lomthombo futhi inciphise ukukhiqizwa kwama-microcracks ekubunjweni, ngaleyo ndlela ithuthukise ukuzinza komshini womthombo. Ngaphezu kwalokho, i-PAC ingaphinde ithuthukise i-thixotropy yoketshezi lokumba, ukuze yakhe amandla aqinile okusekela lapho imile, futhi igcine uketshezi olufanele lapho igeleza, iqhubeke nokuzinza udonga lomthombo.
4. Izici zokuvikela imvelo
Ngokuthuthukiswa kwezidingo zokuvikela imvelo, amakhemikhali asetshenziswa ekumba uketshezi kudingeka abe nokusebenza okuhle kokuvikela imvelo. I-PAC iwumkhiqizo oshintshiwe we-cellulose yemvelo, onokubola okuhle kwe-biodegradability kanye nobuthi obuphansi, obuhlangabezana nezidingo zokuvikela imvelo.
Isimiso
I-PAC iwumkhiqizo oshintshwe amakhemikhali osuselwe ku-cellulose yemvelo, awunazo izinto ezinobuthi, futhi ungonakalisa ama-microorganisms endaweni yemvelo. Uma kuqhathaniswa nama-polymers okwenziwa, i-PAC inomthelela omncane emvelweni futhi ihambisana kakhulu nezidingo zokumba okuluhlaza. Lesi sici sikunikeza inzuzo ecacile ezindaweni ezizwela imvelo kanye nokubhola ogwini.
5. Izinga lokushisa nokumelana nosawoti
Ezindaweni ezishisa kakhulu nezinosawoti omningi, ubumba bendabuko kanye nama-polymers kuvame ukuba nobunzima bokugcina ukuzinza koketshezi lokumba, kuyilapho i-PAC ibonisa ukushisa okuhle nokumelana nosawoti futhi ingagcina ukusebenza kahle koketshezi lokumba ezindaweni eziyinkimbinkimbi.
Isimiso
Amaqembu e-anionic (njengamaqembu e-carboxyl) angeniswa esakhiweni samangqamuzana e-PAC. Lawa maqembu angashintshanisa ama-ion ngama-ion kasawoti endaweni enosawoti omningi ukuze kugcinwe ukuzinza kwesakhiwo samangqamuzana. Ngesikhathi esifanayo, i-PAC inokuqina okuphezulu kokushisa futhi ngeke ibhekane nokuwohloka okukhulu ngaphansi kwezimo eziphakeme zokushisa, iqinisekisa i-viscosity kanye nekhono lokulawula ukuhlunga koketshezi lokumba. Ngakho-ke, i-PAC inemiphumela emihle kakhulu yohlelo lokusebenza kumaslurries amanzi anosawoti kanye nemithombo enezinga eliphezulu lokushisa.
6. Lungiselela i-rheology yokumba uketshezi
I-Rheology isho ukugeleza nezici zokuguquguquka koketshezi lokumba ngaphansi kwamandla okugunda. I-PAC ingalungisa i-rheology yoketshezi lokumba ukuze iqinisekise ukuthi inomthamo omuhle wokuthwala amatshe futhi ingageleza ngokukhululeka emgodini womthombo ngesikhathi sokumba.
Isimiso
I-PAC isebenzisana nezinye izakhi kuketshezi lokumba ukuze kwakheke isakhiwo senethiwekhi esiyinkimbinkimbi futhi ilungise inani lesivuno kanye nezici zokunciphisa uketshezi loketshezi lokumba. Lo mphumela wokulawula wenza ukuthi uketshezi lokumba lubonise amandla amahle okuthwala amatshe kanye noketshezi ngesikhathi sokumba, ikakhulukazi ekwakhekeni okuyinkimbinkimbi kanye nemithombo enengcindezi ephezulu.
7. Ukuhlaziywa kwecala
Ekusetshenzisweni okungokoqobo, i-PAC isetshenziswa kakhulu ezinhlelweni ezihlukene zokumba uketshezi. Isibonelo, kuphrojekthi yokumba umthombo ojulile, kwasetshenziswa uketshezi lokumba olusekelwe emanzini oluqukethe i-PAC. Imiphumela yabonisa ukuthi i-PAC inciphise kakhulu ukuhluzwa koketshezi lokumba, yathuthukisa ukuzinza komthombo, yathuthukisa ukusebenza kahle kokumba, futhi yehlisa izinga lezingozi zemigodi ebangelwa ukungcoliswa kokwakheka. Ngesikhathi esifanayo, i-PAC nayo yenze kahle ekubholeni olwandle, futhi isengakwazi ukulawula ngempumelelo ukusebenza koketshezi lokumba ngaphansi kosawoti omningi nezimo zokushisa okuphezulu ukuze kuqinisekiswe ukuqhubeka kahle kokusebenza kokumba.
Ukusetshenziswa kwe-polyanionic cellulose ekubholeni uwoyela kubonakala ikakhulukazi ezicini zayo ezinhle kakhulu zokunciphisa ukulahlekelwa kokuhlunga, ukwandisa i-viscosity, ukuthuthukisa ukuzinza kwe-wellbore nokuvikelwa kwemvelo. Ukusetshenziswa kwayo emanzini okumba okusekelwe emanzini nakumawoyela akuthuthukisi nje kuphela ukusebenza kahle kokumba futhi kunciphisa izinga lezingozi zemigodi ephansi, kodwa futhi kuhambisana nemvelo futhi kusiza ukufeza umgomo wokumba oluhlaza. Ngaphansi kwezimo eziyinkimbinkimbi zokuma kwezwe kanye nezinga lokushisa eliphezulu nezimo zokucindezela okukhulu, izinga lokushisa le-PAC nokumelana nosawoti kuyaqhubeka kugqamisa ukubaluleka kwayo ekumbiweni kukawoyela. Ngakho-ke, i-polyanionic cellulose ithatha isikhundla esibalulekile kubuchwepheshe besimanje bokumba uwoyela.
Isikhathi sokuthumela: Jun-14-2024