IHydroxYethyl Cellulose (HEC) yisengezo esivamile embonini yokumba kawoyela, lapho isebenza khona imisebenzi ehlukahlukene ekuvuthweni kokwenziwa kwamanzi. Lezi zinhlaka, ezaziwa nangokuthi zidonsa udaka, zidlala indima ebalulekile ekwenzeni lula inqubo yokumba ngokupholisa nokuthambisa ukumba, nokunikeza ukuqina komthombo. Nakhu ukubuka konke kwezicelo, imisebenzi kanye nokucatshangelwa kwe-HEC ekuvuthweni kwamafutha:

1. Isingeniso ku-Hydroxyethyl celtulose (HEC) ekubizeni uwoyela

1.1 Ukuchazwa kanye nomthombo

IHydroxYethyl Cellulose iyinhlangano eguquliwe ye-cellulose polymer etholwe ngokuphendula i-cellulose nge-ethylene oxide. Kuvame ukuthathwa kusuka ku-soli pulp noma ukotini futhi kuyacutshungulwa ukudala i-agent-soluble, i-ejenti ye-viscosifing.

1.2 I-Agent e-Viscosifing ekuvutheni uketshezi

I-HEC isetshenziselwa ukumba uketshezi ukuze iguqule futhi ilawula ukubonana kwayo. Lokhu kubalulekile ukuze kugcinwe ingcindezi edingekayo ye-hydraulic emthonjeni kanye nokuqinisekisa ukusikwa okusebenzayo kwezokuhamba ngezinyawo.

2. Imisebenzi ye-Hydroxyethyl cellulose kumafutha okumba kawoyela

2.1 Ukulawulwa kwe-Viscosity

I-HEC isebenza njengesiguquli se-Rheology, ihlinzeka ngokulawula ukubonwa koketshezi lokumba. Amandla okuguqula i-viscosity ebaluleke kakhulu ekwenzeni kahle ukugeleza kwezindawo zoketshezi ngaphansi kwezimo ezihlukile zokumba.

2.2 Ukunqunyelwa ukumiswa

Enqubweni yokumba, kukhiqizwa ama-rock, futhi kubalulekile ukumisa lokhu ukusika kuketshezi oludonsa ukuze kube lula ukususwa kwabo kusuka ku-Wellbore. I-HEC isiza ekugcineni ukumiswa okuzinzile kokusika.

2.3 Hole Ukuhlanza

Ukuhlanza umgodi ophumelelayo kubalulekile kwinqubo yokumba. I-HEC inomthelela emandleni kamanzi wokuthwala nokuhambisa ukusika ngaphezulu, ukuvimba ukunqwabelana emthonjeni futhi kuthuthukise ukusebenza okusebenzayo kokumba.

2.4 Ukuzilwa Kwezinga lokushisa

I-HEC ibonisa ukuqina kokushisa okuhle, okwenza kube lula ukusetshenziswa ku-dring fluids okungase kuhlangane nohla lwamazinga okushisa ngesikhathi senqubo yokumba.

3. Izicelo ku-Fluids Fliids

3.1 uketshezi olususelwa emanzini asuselwa emanzini

I-HEC isetshenziswa kakhulu kumanzi wokumba osuselwa emanzini, ukuhlinzeka ngokulawulwa kwe-viscosity, ukumiswa kokusika, kanye nokuqina. Kuthuthukisa ukusebenza okuphelele kodaka olususelwa emanzini ezindaweni ezihlukene zokumba.

I-3.2 SHALE Evition

I-HEC ingafaka isandla ekuvinjelweni kwe-shale ngokwakha isithiyo esivikelekile ezindongeni ze-Wellbore. Lokhu kusiza ukuvikela ukuvuvukala kanye nokuhlakazeka kokusungulwa kwama-shale, ukulondolozela ukuqina komthombo.

3.3 Ukulawulwa kokujikeleza okulahlekile

Ekusebenzeni kokumba lapho ukulahlekelwa yi-fluid ekwakhiweni kuyinto ekhathazayo, kungafakwa i-HEC ekwakhekeni ukusiza ukulawula ukusakazwa okulahlekile, ukuqinisekisa ukuthi uketshezi oludonsa luhlala lusendleleni.

4. Ukucatshangelwa kanye nokuqapha

4.10

Ukuqoqwa kwe-HEC ku-drive fluids kudinga ukulawulwa ngokucophelela ukuze kufinyelelwe izakhiwo ezithandekayo ze-rheological ngaphandle kokubangela ukuqina ngokweqile noma okunomthelela omubi kwezinye izici ze-fluid.

4.2 Ukuvumelana Ukuvumelana

Ukuvumelana nezinye izithasiselo ze-drive fluid kanye nezinto ezibalulekile. Ukucatshangelwa ngokucophelela kufanele kunikezwe wonke ukwakheka ukuvikela izindaba ezinjengokugcwala noma ukusebenza okuncishisiwe.

4.3 Ukulawulwa kwe-Fluid Filtration

Ngenkathi i-HEC ingafaka isandla ekulawulweni kokulahlekelwa koketshezi, ezinye izengezo nazo zingadingeka ukubhekana nezinkinga ezithile zokulahlekelwa uketshezi futhi zilondoloze ukulawulwa kwe-filltration.

5. Isiphetho

I-Hydroxyyethyl celtulose idlala indima ebalulekile ekusebenzeni kukawoyela ngokushayela uwoyela ngokufaka isandla ekusebenzeni kahle nasekuqineni koketshezi lokumba. Njenge-ejenti ye-viscosing, kusiza ukulawula izakhiwo ze-fluid, kumise ukusika, nokugcina ukuqina kwe-Wellbore. Amakhemikhali adinga ukubheka ngokucophelela ukugxila, ukuhambisana kanye nokwakheka okuphelele ukuqinisekisa ukuthi i-HEC yandisa izinzuzo zayo kuzicelo zokumba uwoyela.