I-Hydroxyethyl cellulose (HEC) yinto eyongeziweyo eyongeziweyo kwishishini le-oyile yokomba, apho isebenza khona imisebenzi eyahlukeneyo ekubunjweni kwe-drilling fluid. Le mixube, ekwabizwa ngokuba kukugrumba udaka, idlala indima ebalulekileyo ekuququzeleleni inkqubo yokomba ngokupholisa kunye nokuthambisa intwana yokomba, ukuthwala izisika ukuya kumphezulu, kunye nokubonelela uzinzo kumthombo. Nalu ushwankathelo lwezicelo, imisebenzi, kunye neengqwalasela ze-HEC ekwembeni ioyile:

1. Intshayelelo ye-Hydroxyethyl Cellulose (HEC) kwi-Oil Drilling

1.1 Inkcazo kunye nomthombo

I-Hydroxyethyl cellulose yi-cellulose ye-polymer eguqulwayo efunyenwe ngokusabela i-cellulose nge-ethylene oxide. Ngokuqhelekileyo ivela kwi-pulp yomthi okanye i-cotton kwaye icutshungulwa ukuze idale i-agent-soluble, i-agent e-viscosifying.

1.2 I-Agent ye-Viscosifying kwi-Drilling Fluids

I-HEC isetyenziselwa ukugrumba ulwelo ukulungisa nokulawula i-viscosity yabo. Oku kubalulekile ekugcineni uxinzelelo oluyimfuneko lwe-hydraulic kwiqula lomthombo kunye nokuqinisekisa ukuthuthwa okufanelekileyo kokusikwa ukuya phezulu.

2. Imisebenzi ye-Hydroxyethyl Cellulose kwi-Oil Drilling Fluids

2.1 Ulawulo lweViscosity

I-HEC isebenza njenge-rheology modifier, inika ulawulo phezu kwe-viscosity ye-drilling fluid. Ukukwazi ukulungelelanisa i-viscosity kubalulekile ekuphuculeni iimpawu zokuhamba kwamanzi phantsi kweemeko ezahlukeneyo zokomba.

2.2 Ukumiswa kokusika

Kwinkqubo yokomba, ukusika amatye kuyenziwa, kwaye kubalulekile ukunqumamisa oku kusikwa kulwelo lokomba ukuze kube lula ukususwa kwabo kumthombo. I-HEC inceda ekugcineni ukumiswa okuzinzile kokusika.

2.3 Ukucoca imingxunya

Ukucoca imingxunya okusebenzayo kubalulekile kwinkqubo yokomba. I-HEC inegalelo kumandla ombane wokuthwala kunye nokuthutha ukusika kwi-surface, ukuthintela ukuqokelela kwi-wellbore kunye nokukhuthaza ukusebenza ngokufanelekileyo kokomba.

2.4 Uzinzo lobushushu

I-HEC ibonisa ukuzinza okuhle kweqondo lokushisa, okwenza kube yinto efanelekileyo yokusetyenziswa kwi-drilling fluids enokuthi idibane noluhlu lwamaqondo okushisa ngexesha lokugaya.

3. Izicelo kwi-Oil Drilling Fluids

3.1 Ulwelo oluSekwe ngaManzi

I-HEC isetyenziswa ngokuqhelekileyo kwi-drilling fluids esekelwe emanzini, ukubonelela ngolawulo lwe-viscosity, ukumiswa kokusika, kunye nokuzinza. Iphakamisa ukusebenza ngokubanzi kodaka olusekelwe emanzini kwiindawo ezahlukeneyo zokomba.

3.2 UThintelo lweShale

I-HEC inokufaka isandla kwi-shale inhibition ngokwenza umqobo okhuselayo kwiindonga zomthombo. Oku kunceda ukuthintela ukudumba kunye nokuqhekeka kokwakheka kwe-shale, ukugcina uzinzo lwe-wellbore.

3.3 ULahleko loLawulo lokuSekelelwa

Kwimisebenzi yokugaya apho ukulahlekelwa kwamanzi ekubunjweni kuyinkxalabo, i-HEC inokubandakanywa ekuqulunqweni ukunceda ukulawula ukujikeleza okulahlekileyo, ukuqinisekisa ukuba i-drilling fluid ihlala kwi-wellbore.

4. Iingqwalaselo kunye neZilumkiso

4.1 Ukugxininisa

Ukugxininiswa kwe-HEC kwi-drilling fluids kufuneka ilawulwe ngononophelo ukufezekisa iipropati ezifunwayo ze-rheological ngaphandle kokubangela ukuqina okugqithisileyo okanye ukuchaphazela kakubi ezinye iimpawu zolwelo.

4.2 Ukuhambelana

Ukuhambelana nezinye izongezo zolwelo lokomba kunye namalungu kubalulekile. Uqwalaselo ngononophelo kufuneka lunikwe kulo lonke uqulunqo ukuthintela imiba efana ne-flocculation okanye ukunciphisa ukusebenza kakuhle.

4.3 Ulawulo loHlulo lolwelo

Ngelixa i-HEC inokufaka isandla ekulawuleni ukulahleka kwamanzi, ezinye izongezo zinokuba yimfuneko ukujongana nemiba ethile yokulahleka kwamanzi kunye nokugcina ulawulo lokucoca.

5. Isiphelo

I-Hydroxyethyl cellulose idlala indima ebalulekileyo kwimisebenzi yokomba i-oyile ngokuba negalelo ekusebenzeni nasekuzinzeni kolwelo lokomba. Njenge-agent ye-viscosifying, inceda ukulawula iimpawu zolwelo, ukunqumamisa ukusika, kunye nokugcina uzinzo lwe-wellbore. Abaqulunqi kufuneka baqwalasele ngononophelo ukugxininiswa, ukuhambelana, kunye nokuqulunqwa ngokubanzi ukuze kuqinisekiswe ukuba i-HEC ikhulisa izibonelelo zayo kwizicelo zokomba ioli.