Hydroxyethyl Cellulose (HEC) e bapala karolo ea bohlokoa ts'ebetsong ea oli le khase. E le thepa ea polymer e sebetsang ka bongata, e sebelisoa haholo ho metsi a cheka, maro a tlatsang, maro a fracturing le masimo a mang. Ts'ebeliso le ts'ebeliso ea eona li bonts'oa haholo maemong a latelang:
1. Ho sebelisoa ha mokelikeli oa ho phunya
a. Thickener
Tšebeliso e tloaelehileng ka ho fetisisa ea HEC ho maro a ho cheka ke e le motenya. Mokelikeli oa ho cheka (seretse) o hloka ho ba le viscosity e itseng ho etsa bonnete ba hore likheo tsa ho cheka li fetisetsoa holimo nakong ea ho cheka ho qoba ho koala seliba. HEC e ka eketsa haholo viscosity ea mokelikeli oa ho cheka, ea e fa matla a ho emisa le ho jara hantle.
b. Setsi sa ho aha lebota
Nakong ea ts'ebetso ea ho cheka, botsitso ba lerako la seliba ke ba bohlokoa. HEC e ka ntlafatsa ts'ebetso ea plugging ea mokelikeli oa ho cheka le ho theha lera le letenya la seretse leboteng la seliba ho thibela ho putlama ha lerako kapa ho lutla ha seliba. Phello ena ea ho haha marako ha e ntlafatse feela botsitso ba lerako la seliba, empa hape e fokotsa tahlehelo ea mokelikeli oa ho phunya, kahoo e ntlafatsa bokhoni ba ho cheka.
c. Phetoho ea Rheology
HEC e na le thepa e ntle ea rheological mme e ka fetola thepa ea rheological ea maro a ho cheka. Ka ho lokisa mahloriso a HEC, boleng ba lihlahisoa le viscosity ea mokelikeli oa ho cheka o ka laoloa, e leng ntho ea bohlokoa bakeng sa ts'ebetso e sebetsang ea ho cheka.
2. Tšebeliso ea mokelikeli oa ho qetela
a. Hantle lebota botsitso taolo
Mekelikeli ea ho qetela ke maro a sebelisoang ho phethela tšebetso ea ho cheka le ho itokisetsa tlhahiso. E le karolo ea bohlokoa ho phethoang mokelikeli, HEC e ka laola ka katleho botsitso ba lerako la seliba. Thepa e teteaneng ea HEC e etsa hore e thehe sebopeho sa mokelikeli o tsitsitseng mokelikeli oa ho qetela, kahoo o fana ka tšehetso e ntle ea hantle.
b. Taolo ya permeability
Nakong ea ts'ebetso ea ho phethoa ha seliba, HEC e ka etsa kaka e teteaneng ea seretse e thibelang metsi ho kena ka har'a sebopeho. Tšobotsi ena ke ea bohlokoa haholo ho thibela tšenyo ea sebopeho le ho lutla hantle, le ho netefatsa tsoelo-pele e ntle ea ts'ebetso ea ho phethoa.
c. Taolo ea tahlehelo ea metsi
Ka ho etsa kaka e sebetsang hantle ea seretse, HEC e ka fokotsa tahlehelo ea mokelikeli le ho netefatsa tšebeliso e sebetsang ea mokelikeli oa ho tlatsa. Sena se thusa ho fokotsa litšenyehelo tsa ts'ebetso le ho tiisa hore ho hahoa hamonate.
3. Ho sebelisoa ha mokelikeli oa fracturing
a. Thickener
Ts'ebetsong ea hydraulic fracturing, mokelikeli oa fracturing o hloka ho jara proppant (e kang lehlabathe) ho ea ho fractures ea sebopeho ho tšehetsa fractures le ho boloka likanale tsa oli le khase li bulehile. Joaloka motenya, HEC e ka eketsa viscosity ea mokelikeli oa fracturing le ho ntlafatsa bokhoni ba eona ba ho jara lehlabathe, kahoo e ntlafatsa phello ea fracturing.
b. Moemeli oa ho hokahanya
HEC e ka boela ea sebelisoa e le motsoako o kopanyang ho etsa litsamaiso tsa li-gel tse nang le viscosity e phahameng le matla ka ho itšoara ka lik'hemik'hale tse ling. Sisteme ena ea gel e ka ntlafatsa bokhoni ba ho jara lehlabathe la mokelikeli o robehileng 'me ea lula e tsitsitse mochesong o phahameng.
c. Moemeli oa taolo ea ho senyeha
Ka mor'a hore ts'ebetso ea fracturing e phethoe, masala a mokelikeli oa fracturing a hloka ho tlosoa ho tsosolosa mokhoa o tloaelehileng oa sebopeho. HEC e ka laola ts'ebetso ea ho senya ho senya mokelikeli oa fracturing ka mokelikeli o tlaase oa viscosity ka nako e itseng bakeng sa ho tlosoa habonolo.
4. Tšireletso le ts'ireletso ea tikoloho
Joalo ka thepa ea polymer e qhibilihang ka metsing, HEC e na le biodegradability e ntle le e tsamaellanang le tikoloho. Ha ho bapisoa le li-thickeners tsa khale tse thehiloeng ho peterole, HEC e na le tšusumetso e fokolang tikolohong 'me e lumellana haholoanyane le litlhoko tsa ts'ireletso ea tikoloho le litlhoko tsa ts'ebetso ea ts'ebetso ea kajeno ea oli le khase.
Tšebeliso e pharaletseng ea hydroxyethyl cellulose ts'ebetsong ea oli le khase e bakoa haholo-holo ka lebaka la ho teteka ha eona ho babatsehang, ho haha marako, ho fetola rheological le mesebetsi e meng. Ha e ntlafatse feela ts'ebetso ea ho cheka le ho qeta metsi, e boetse e phetha karolo ea bohlokoa ho fracturing fluid, ho ntlafatsa ts'ebetso ea ts'ebetso le polokeho. Ka ntlafatso ea litlhoko tsa ts'ireletso ea tikoloho, HEC, joalo ka thepa e sa sireletsehang tikolohong, e na le litebello tse pharalletseng tsa ts'ebeliso.
Nako ea poso: Jul-10-2024