Iselulosi yeHydroxyethyl kwiDrilling Fluid

I-Hydroxyethyl cellulose (HEC) yipolima enyibilikayo emanzini edla ngokusetyenziswa njenge-viscosifier kulwelo lokomba. Ukugrumba ulwelo, okwakwaziwa njengokugrumba udaka, yinxalenye ebalulekileyo kwinkqubo yokomba esetyenziswa kuphononongo lwe-oyile negesi, ukuveliswa kwamandla e-geothermal, kunye nokutsalwa kwezimbiwa. Kweli nqaku, siza kuxoxa ngezicelo ezahlukeneyo ze-HEC kwi-drilling fluids.

Ulawulo lweViscosity

Esinye sezicelo eziphambili ze-HEC kwi-drilling fluids kukulawula i-viscosity yolwelo. I-Viscosity ibhekisa kubunzima okanye ukuchasana nokuhamba kolwelo. Inkqubo yokugaya idinga ulwelo olunokuhamba ngokulula kwi-drill bit kunye nokuthwala i-drill cuttings ukuya phezulu. Nangona kunjalo, ukuba i-viscosity ye-fluid iphantsi kakhulu, ayiyi kukwazi ukuthwala i-cuttings, kwaye ukuba iphezulu kakhulu, kuya kuba nzima ukupompa nge-wellbore.

I-HEC yi-viscosifier esebenzayo kuba inokunyusa i-viscosity ye-drilling fluid ngaphandle kokwandisa kakhulu ubuninzi. Oku kubalulekile kuba ulwelo olunoxinano oluphezulu lunokubangela umonakalo kumthombo kwaye lunokubangela ukuba iqula liwe. Ukongezelela, i-HEC iyasebenza kwiindawo eziphantsi, ezinceda ukunciphisa ixabiso elipheleleyo lolwelo lokomba.

Ulawulo lwelahleko yolwelo

Olunye usetyenziso olubalulekileyo lwe-HEC ekugrumbeni ulwelo kulawulo lokulahleka kolwelo. Ilahleko yolwelo ibhekisa ekulahlekeni kolwelo ekubunjweni kwayo ngexesha lenkqubo yokomba. Oku kunokubangela ukuncipha komthamo wolwelo lokomba, nto leyo enokubangela uzinzo olulambathayo lwequla kunye nokuncipha kokusebenza kokugrumba.

I-HEC yi-arhente esebenzayo yokulawula ilahleko yolwelo kuba inokwenza ikeyiki ebhityileyo, engenakungeneka yokucoca kumphezulu wokwakheka. Le keyiki yokucoca inceda ukuthintela ulwelo lokomba ukuba lungene ekubunjweni, ukunciphisa ukulahleka kolwelo kunye nokugcina uzinzo lwe-wellbore.

Ukunqunyanyiswa kunye neCapacity Capacity

I-HEC ikwasetyenziselwa ukugrumba ulwelo njengento yokunqunyanyiswa kunye nokuthwala. Inkqubo yokugaya ibandakanya ukusetyenziswa kweentlobo zezongezo eziqinileyo, ezibandakanya i-barite kunye nezinye ii-agent zokulinganisa, ezongezwa kwi-fluid ukwandisa ubuninzi bayo. I-HEC iyasebenza ekumiseni ezi zongezo ziqinileyo kulwelo kwaye zithintele ukuba zingazinzi phantsi komthombo.

Ukongeza, i-HEC inokunyusa umthamo wokuthwala we-drilling fluid. Oku kubhekiselele kwisixa se-drill cuttings esinokuthwala ulwelo ukuya phezulu. Ulwelo olunomthamo ophezulu wokuthwala lunokunceda ekuphuculeni ukusebenza kakuhle kokomba kunye nokunciphisa umngcipheko wokungazinzi kwe-wellbore.

Ubushushu kunye noZinzo lwe-pH

Ulwelo lokwemba luphantsi kweemeko ezahlukeneyo zokusingqongileyo, kubandakanywa amaqondo obushushu aphezulu kunye neemeko ezineasidi. I-HEC iyakwazi ukugcina i-viscosity yayo kunye nokuzinza kwezi meko zinzima, iyenza ibe yinto eyongezelelweyo yokudibanisa i-drilling fluids esetyenziswa kwiindawo ezinzima.

I-HEC iphinde ibe ne-pH ezinzileyo, oku kuthetha ukuba inokugcina i-viscosity kunye nezinye iimpawu kwi-fluid kunye noluhlu olubanzi lwamaxabiso e-pH. Oku kubalulekile kuba i-pH ye-drilling fluids inokwahluka ngokubanzi ngokuxhomekeke kwiimeko ze-geological zequla.

Ukuqukumbela

I-HEC yongezelela ebalulekileyo kwi-drilling fluids ngenxa yokukwazi ukulawula i-viscosity, ukunciphisa ukulahlekelwa kwamanzi, ukumisa kunye nokuthwala izongezo eziqinileyo, kunye nokugcina uzinzo kwiindawo ezinzima.