I-Hydroxyethyl Cellulose kuFluid Fracturing Emgodini Kawoyela

I-Hydroxyethyl cellulose (HEC) kwesinye isikhathi isetshenziswa oketshezini oluqhekekayo olusetshenziswa emisebenzini yokumba uwoyela, ikakhulukazi ku-hydraulic fracturing, okwaziwa ngokujwayelekile ngokuthi i-fracking. Ama-fracturing fluids ajovwa emthonjeni ngomfutho ophezulu wokudala ukuphuka ekwakhekeni kwamadwala, okuvumela ukukhishwa kukawoyela negesi. Nansi indlela i-HEC engasetshenziswa ngayo kuketshezi oluqhekekayo:

1. Ukuguqulwa Kwe-Viscosity: I-HEC isebenza njengesilungisi se-rheology, esiza ukulawula i-viscosity yoketshezi oluphukayo. Ngokulungisa ukugxila kwe-HEC, opharetha bangakwazi ukulungisa i-viscosity ukuze bafinyelele izakhiwo ezifiselekayo ze-fracturing fluid, ukuqinisekisa ukuthuthwa kwamanzi okuphumelelayo nokudalwa kokuphuka.
2. Ukulawulwa Kokulahleka Kwe-Fluid: I-HEC ingasiza ekulawuleni ukulahlekelwa uketshezi ekwakhekeni ngesikhathi sokuqhekeka kwe-hydraulic. Yakha ikhekhe lokuhlunga elincanyana, elingenakunyakaziswa ezindongeni zokuphuka, ukunciphisa ukulahlekelwa kwamanzi nokuvimbela ukulimala ekubunjweni. Lokhu kusiza ukugcina ubuqotho be-fracture nokuqinisekisa ukusebenza kahle kwe-reservoir.
3. I-Proppant Suspension: Uketshezi oluqhekekayo luvame ukuqukatha ama-proppants, njengesihlabathi noma izinhlayiya ze-ceramic, ezithwalwa kuma-fractures ukuze zihlale zivulekile. I-HEC isiza ukumisa lawa ma-propants ngaphakathi koketshezi, ukuvimbela ukuhlaliswa kwawo kanye nokuqinisekisa ukusatshalaliswa okufanayo phakathi kokuqhekeka.
4. I-Fracture Cleanup: Ngemva kwenqubo ye-fracturing, i-HEC ingasiza ekuhlanzeni i-fracturing fluid kusukela ku-wellbore kanye nenethiwekhi ye-fracture. I-viscosity yayo kanye nezakhiwo zokulawula ukulahlekelwa koketshezi zisiza ukuqinisekisa ukuthi uketshezi oluqhekekayo lungatholakala kahle emthonjeni, okuvumela ukukhiqizwa kukawoyela negesi ukuthi kuqale.
5. Ukuhambisana Nezithasiselo: I-HEC ihambisana nezithasiselo ezihlukahlukene ezivame ukusetshenziswa kuketshezi oluqhekekayo, okuhlanganisa ama-biocides, ama-corrosion inhibitors, nezinciphisi ze-friction. Ukuhambisana kwayo kuvumela ukwakheka koketshezi oluqhekekayo olwenziwe ngokwezifiso oluhambisana nezimo ezithile zomthombo kanye nezidingo zokukhiqiza.
6. Ukuzinza Kwezinga Lokushisa: I-HEC ibonisa ukuzinza okuhle kokushisa, okuyenza ifanelekele ukusetshenziswa kuketshezi oluqhekekayo oluvezwe emazingeni okushisa aphezulu. Igcina izakhiwo zayo ze-rheological kanye nokusebenza kahle njengesengezo soketshezi ngaphansi kwezimo ezimbi kakhulu, iqinisekisa ukusebenza okungaguquki ngesikhathi sokusebenza kwe-hydraulic fracturing.

I-Hydroxyethyl cellulose (HEC) ingadlala indima ebalulekile ekwakhiweni koketshezi oluqhekekayo lwezinhlelo zokusebenza zokumba uwoyela. Ukuguqulwa kwe-viscosity yayo, ukulawulwa kokulahlekelwa uketshezi, ukumiswa kwe-propant, ukuhambisana nezithasiselo, ukuzinza kwezinga lokushisa, nezinye izakhiwo kunomthelela ekusebenzeni nasekuphumeleleni kokusebenza kwe-hydraulic fracturing. Nokho, kubalulekile ukucabangela izici ezithile zechibi nezimo zomthombo lapho uklama ukwakheka koketshezi oluphukayo oluqukethe i-HEC.