IHydroxyethyl Cellulose (HEC) idlala indima ebalulekile ekusebenzeni kukawoyela negesi. Njengempahla ye-polymer esebenzayo, isetshenziswa kabanzi ekubholeni uketshezi, uketshezi lokuphothula, uketshezi oluqhekekayo neminye imikhakha. Ukusetshenziswa kwayo kanye nokusetshenziswa kwayo kubonakala kakhulu kulezi zici ezilandelayo:
1. Ukusetshenziswa koketshezi lokumba
a. I-Thickener
Ukusetshenziswa okuvame kakhulu kwe-HEC kuketshezi lokumba kufana nokujiya. Uketshezi lokumba (udaka) ludinga ukuba ne-viscosity ethile ukuze kuqinisekiswe ukuthi izimbobo zokumba ziyiswa phezulu ngesikhathi sokumba ukuze kugwenywe ukuvala umthombo. I-HEC ingakhuphula kakhulu i-viscosity yoketshezi lokumba, inikeze ukumiswa okuhle nokuthwala amandla.
b. I-ejenti yokwakha udonga
Ngesikhathi sokumba, ukuzinza kodonga lomthombo kubalulekile. I-HEC ingathuthukisa ukusebenza kokuxhuma koketshezi lokumba futhi yakhe ungqimba oluminyene lwekhekhe lodaka odongeni lomthombo ukuvimbela ukubhidlika kodonga lomthombo noma ukuvuza komthombo. Lo mphumela wokwakha udonga awugcini nje ukuthuthukisa ukuzinza kodonga lomthombo, kodwa futhi unciphisa ukulahlekelwa uketshezi lokumba, ngaleyo ndlela kuthuthukiswe ukusebenza kahle kokumba.
c. Isilungisi se-Rheology
I-HEC inezici ezinhle ze-rheological futhi ingalungisa izakhiwo ze-rheological zoketshezi lokumba. Ngokulungisa ukugxila kwe-HEC, inani lesivuno kanye ne-viscosity yoketshezi lokumba kungalawulwa, okubalulekile ekusebenzeni okuphumelelayo kokumba.
2. Ukusetshenziswa koketshezi lokuphothula
a. Well udonga ukuzinza control
Uketshezi oluqedayo luwuketshezi olusetshenziselwa ukuqedela imisebenzi yokumba nokulungiselela ukukhiqizwa. Njengengxenye eyinhloko ekuqedeni uketshezi, i-HEC ingakwazi ukulawula ngokuphumelelayo ukuzinza kodonga lomthombo. Izici zokujiya ze-HEC ziyenza ikwazi ukwenza uketshezi oluzinzile oketshezini lokuphothula, ngaleyo ndlela inikeze ukusekelwa okuhle kwe-wellbore.
b. Ukulawula ukuvumeleka
Phakathi nenqubo yokuphothula kahle, i-HEC ingenza ikhekhe lodaka eliminyene elivimbela uketshezi ukuthi lungene ekubunjweni. Lesi sici sibaluleke kakhulu ukuvimbela ukulimala kokwakheka kanye nokuvuza kahle, futhi siqinisekisa ukuqhubeka kahle kwenqubo yokuqeda.
c. Ukulawula ukulahlekelwa kwamanzi
Ngokwenza ikhekhe lodaka elisebenzayo, i-HEC inganciphisa ukulahlekelwa kwamanzi futhi iqinisekise ukusetshenziswa okuphumelelayo koketshezi lokuqeda. Lokhu kusiza ukunciphisa izindleko zokusebenza futhi kuqinisekisa ukwakhiwa okubushelelezi.
3. Ukufakwa kwe-fracturing fluid
a. I-Thickener
Emisebenzini ye-hydraulic fracturing, i-fracturing fluid idinga ukuthwala i-proppant (efana nesihlabathi) ekuqhekekeni kokwakheka ukuze kusekelwe ukuphuka nokugcina iziteshi zikawoyela negesi zivulekile. Njenge-thickener, i-HEC ingakhuphula i-viscosity ye-fracturing fluid futhi ithuthukise umthamo wayo wokuthwala isihlabathi, ngaleyo ndlela ithuthukise umphumela wokuphuka.
b. I-ejenti yokuxhumanisa
I-HEC ingasetshenziswa futhi njenge-ejenti yokuxhumanisa ukuze yakhe amasistimu ejeli ane-viscosity ephakeme namandla ngokusabela kwamanye amakhemikhali. Lolu hlelo lwejeli lungathuthukisa amandla okuthwala isihlabathi oketshezi oluqhekekayo futhi luhlale luzinzile emazingeni okushisa aphezulu.
c. I-ejenti yokulawula ukuwohloka
Ngemva kokuqedwa kokusebenza kwe-fracturing, izinsalela ku-fracturing fluid zidinga ukususwa ukuze kubuyiselwe ukuvuthwa okuvamile kokubunjwa. I-HEC ingakwazi ukulawula inqubo yokuwohloka ukuze ilulaze uketshezi lwe-fracturing lube yi-low-viscosity fluid ngaphakathi kwesikhathi esithile sokususwa kalula.
4. Ukuvikelwa kwemvelo kanye nokusimama
Njengempahla ye-polymer encibilika emanzini, i-HEC inokubola okuhle kwe-biodegradability nokuhambisana kwemvelo. Uma kuqhathaniswa nokuqina okusekelwe ku-petroleum, i-HEC inomthelela omncane emvelweni futhi ihambisana kakhulu nezimfuneko zokuvikelwa kwemvelo kanye nokusimama kokusebenza kwesimanje kukawoyela negesi.
Ukusetshenziswa okubanzi kwe-hydroxyethyl cellulose ekusebenzeni kukawoyela negesi ikakhulukazi ngenxa yokuqina kwayo okuhle kakhulu, ukwakhiwa kodonga, ukuguqulwa kwe-rheological kanye neminye imisebenzi. Akugcini nje ngokuthuthukisa ukusebenza kokumba nokuqeda uketshezi, futhi kudlala indima ebalulekile ekuqhekekeni koketshezi, ukuthuthukisa ukusebenza kahle nokuphepha. Ngokuthuthukiswa kwezidingo zokuvikela imvelo, i-HEC, njengento evumelana nemvelo, inamathemba abanzi okusebenza.
Isikhathi sokuthumela: Jul-10-2024