I-Hydroxyethyl cellulose (HEC) sisongezelelo esiqhelekileyo kwishishini lokugrumba ioyile, apho isebenza imisebenzi eyahlukeneyo kwifomyula yolwelo lokugrumba. Ezi fomyula, ezaziwa ngokuba zii-drilling muds, zidlala indima ebalulekileyo ekwenzeni lula inkqubo yokugrumba ngokupholisa nokuthambisa i-drill bit, zithwale iziqwenga ziye kumphezulu, kwaye zinike uzinzo kwi-wellbore. Nantsi ingcaciso yezicelo, imisebenzi, kunye nezinto eziqwalaselwa yi-HEC ekugrumbeni ioyile:

1. Intshayelelo kwiHydroxyethyl Cellulose (HEC) kwiOyile yokuGcina

1.1 Inkcazo kunye nomthombo

I-Hydroxyethyl cellulose yi-polymer ye-cellulose eguquliweyo efunyenwe ngokuphendula i-cellulose nge-ethylene oxide. Idla ngokufumaneka kwi-pulp yomthi okanye ikotoni kwaye icutshungulwa ukuze kwenziwe i-arhente enyibilikayo emanzini, enyibilikisa i-viscosifying.

1.2 I-Arhente yeViscosifying kwi-Drilling Fluids

I-HEC isetyenziswa kwiincindi zokubhola ukulungisa nokulawula ukuxinana kwazo. Oku kubalulekile ekugcineni uxinzelelo olufunekayo lwe-hydraulic kwindawo yomthombo kunye nokuqinisekisa ukuba iziqwenga ziyathuthwa ngokufanelekileyo ziye kumphezulu.

2. Imisebenzi yeHydroxyethyl Cellulose kwiOyile yokuGrumba ulwelo

2.1 Ulawulo lokuxinana

I-HEC isebenza njengohlengahlengiso lwe-rheology, inika ulawulo kwi-viscosity yolwelo lokugrumba. Ukukwazi ukulungisa i-viscosity kubalulekile ekwenzeni ngcono iipropati zokuhamba kolwelo phantsi kweemeko ezahlukeneyo zokugrumba.

2.2 Ukumiswa kweZiqwenga

Kwinkqubo yokugrumba, kuveliswa iziqwenga zamatye, kwaye kubalulekile ukuxhoma ezi ziqwenga kulwelo lokugrumba ukuze kube lula ukuzisusa kwindawo evulekileyo. I-HEC inceda ekugcineni ukumiswa okuzinzileyo kweziqwenga.

2.3 Ukucocwa kwemingxunya

Ukucocwa kwemingxunya ngokufanelekileyo kubalulekile kwinkqubo yokugrumba. I-HEC inegalelo ekubeni ulwelo lukwazi ukuthwala nokuthutha iziqwenga ziye kumphezulu, ithintela ukuqokelelwa kwimithombo yamanzi kwaye ikhuthaza ukusebenza kakuhle kokugrumba.

2.4 Uzinzo lobushushu

I-HEC ibonakalisa uzinzo oluhle kubushushu, nto leyo eyenza ukuba ifaneleke ukusetyenziswa kulwelo lokugrumba olunokudibana nobushushu obahlukeneyo ngexesha lenkqubo yokugrumba.

3. Usetyenziso kwi-Oil Drilling Fluids

3.1 Ulwelo Lokugrumba Olusekelwe Emanzini

I-HEC isetyenziswa kakhulu kulwelo lokubhola olusekelwe emanzini, inika ulawulo lwe-viscosity, ukumiswa kokusikwa, kunye nozinzo. Iphucula ukusebenza ngokubanzi kodaka olusekelwe emanzini kwiindawo ezahlukeneyo zokubhola.

3.2 Ukuthintelwa kweShale

I-HEC inokunceda ekuthinteleni i-shale ngokwenza umqobo okhuselayo kwiindonga ze-wellbore. Oku kunceda ekuthinteleni ukudumba nokuqhekeka kwe-shale formations, kugcina uzinzo lwe-wellbore.

3.3 Ulawulo Lokuphulukana Nokujikeleza Kwegazi

Kwimisebenzi yokugrumba apho ukulahleka kolwelo ekwakhekeni kuyingxaki, i-HEC ingafakwa kwifomyula ukunceda ukulawula ukulahleka kokujikeleza kwegazi, ukuqinisekisa ukuba ulwelo lokugrumba luhlala kwindawo evulekileyo.

4. Izinto ekufuneka ziqwalaselwe kunye namanyathelo okuzikhusela

4.1 Ukugxila

Uxinzelelo lwe-HEC kulwelo lokubhola kufuneka lulawulwe ngononophelo ukuze kufezekiswe iipropati ezifunekayo ze-rheological ngaphandle kokubangela ukuqina okugqithisileyo okanye ukuchaphazela kakubi ezinye iimpawu zolwelo.

4.2 Ukuhambelana

Ukuhambelana nezinye izongezo zolwelo lokubhola kunye nezinto ezisetyenzisiweyo kubalulekile. Kufuneka kuqwalaselwe ngononophelo yonke le fomyula ukuthintela iingxaki ezifana nokuxinana okanye ukungasebenzi kakuhle.

4.3 Ulawulo lokuhluza ulwelo

Nangona i-HEC inokunceda ekulawuleni ukulahleka kolwelo, ezinye izongezo nazo zingafuneka ukujongana nemiba ethile yokulahleka kolwelo kunye nokugcina ulawulo lokuhluza.

5. Isiphelo

I-Hydroxyethyl cellulose idlala indima ebalulekileyo kwimisebenzi yokumba ioyile ngokufaka isandla ekusebenzeni nasekuzinzeni kolwelo lokumba. Njengearhente yokuncibilikisa, inceda ukulawula iimpawu zolwelo, ukumisa ukusikwa, kunye nokugcina uzinzo lwe-wellbore. Abenzi be-formula kufuneka baqwalasele ngononophelo uxinaniso, ukuhambelana, kunye nokwakheka ngokubanzi ukuqinisekisa ukuba i-HEC inika izibonelelo zayo kwizicelo zokumba ioyile.