Ithini indima ye-hydroxyethyl cellulose (HEC) ekubholeni uwoyela?

I-Hydroxyethylcellulose (HEC) ibamba iqhaza elibalulekile embonini yokumba uwoyela, ikakhulukazi emshinini wokumba noma odaka. Uketshezi lokumba lubalulekile enqubweni yokumba imithombo kawoyela, luhlinzeka ngemisebenzi eminingi efana nokupholisa nokugcoba izingcezu zokubhoboza, ukuthwala izinto ezisikwayo zokumba phezulu, nokugcina ukuqina komthombo. I-HEC iyisengezo esiyisihluthulelo kulawa manzi okubhoboza, okusiza ukuthuthukisa ukusebenza kwawo okuphelele nokusebenza kwawo.

Isingeniso se-Hydroxyethyl Cellulose (HEC):

1. Isakhiwo samakhemikhali kanye nezakhiwo:

I-Hydroxyethyl cellulose iyi-nonionic, i-polymer encibilika emanzini etholwe ngokuguqulwa kwamakhemikhali e-cellulose.

Iqembu le-hydroxyethyl esakhiweni salo liyinika ukuncibilika emanzini nasemafutheni, okwenza ibe nezinto ezihlukahlukene.

Isisindo sayo samangqamuzana kanye nezinga lokushintsha kuthonya izici zayo ze-rheological, ezibaluleke kakhulu ekusebenzeni kwayo kuketshezi lokumba.

2. Ukuguqulwa kwe-Rheological:

I-HEC isetshenziswa njenge-rheology modifier, ethinta ukuziphatha kokugeleza kanye ne-viscosity yoketshezi lokumba.

Ukulawulwa kwezakhiwo ze-rheological kubalulekile ekwandiseni ukusebenza koketshezi lokumba ngaphansi kwezimo ezahlukene ze-downhole.

3. Ukulawula isihlungi:

I-HEC isebenza njenge-ejenti yokulawula ukuhlunga, ivimbela ukulahlekelwa kwamanzi ngokweqile ekubunjweni.

I-polymer yenza ikhekhe lesihlungi elincanyana, elingangeneki emgodini womthombo, linciphisa ukungena koketshezi lokumba ekwakhiweni kwamadwala azungezile.

4. Ukuhlanza nokulenga:

I-HEC isiza ukumisa ukusikwa kokubhoboza, ivimbele ukuthi zingazinzi phansi komthombo.

Lokhu kuqinisekisa ukuhlanzwa okusebenzayo komthombo, kugcina umthombo ucacile futhi kuvimbele ukuvinjelwa okungase kuphazamise inqubo yokumba.

5. Ukuthambisa nokupholisa:

Izici zokugcoba ze-HEC zisiza ukunciphisa ukungqubuzana phakathi kwentambo yokubhoboza kanye ne-wellbore, ngaleyo ndlela kuncishiswe ukuguga nokuklebhuka kwemishini yokumba.

Iphinde isize ekukhipheni ukushisa, isize ekupholiseni i-drill bit ngesikhathi sokumba.

6. Ukuzinza kokwakheka:

I-HEC ithuthukisa ukuzinza kwe-wellbore ngokunciphisa ubungozi bokulimala kokwakheka.

Isiza ukugcina ubuqotho bomthombo ngokuvimbela ukuwa noma ukubhidlika kokwakheka kwamadwala azungezile.

7. Uketshezi lokumba olusekelwe emanzini:

I-HEC ivame ukusetshenziswa emanzini okumba amanzi ukuze anikeze i-viscosity nokuzinza kuketshezi lokumba.

Ukuhambisana kwayo namanzi kuyenza ilungele ukwenza uketshezi lokumba oluhambisana nemvelo.

8. Cindezela uketshezi lokumba:

Kumanzi okumba avimbelayo, i-HEC ibamba iqhaza ekulawuleni ukugeleza kwe-shale, ukuvimbela ukwanda, kanye nokwenza ngcono ukuzinza kwe-wellbore.

9. Indawo yokushisa ephezulu:

I-HEC izinzile ngokushisa futhi ilungele ukusetshenziswa emisebenzini yokumba eshisa kakhulu.

Izici zayo zibalulekile ekugcineni ukusebenza kahle koketshezi lokumba ngaphansi kwezimo zokushisa eziphezulu.

10. Ukuhambisana okungeziwe:

I-HEC ingasetshenziswa ngokuhlanganiswa nezinye izithasiselo zoketshezi zokumba njengama-polymers, ama-surfactants nama-ejenti okulinganisa ukuze kuzuzwe izakhiwo ezifiselekayo zoketshezi.

11. Ukucekelwa phansi kwe-Shear:

I-Shear ehlangabezane nayo ngesikhathi sokumba ingabangela i-HEC ukuba ilulaze, ithinte izakhiwo zayo ze-rheological ngokuhamba kwesikhathi.

Ukwakhiwa kwesengezo esifanele nokukhetha kunganciphisa izinselele ezihlobene nokugunda.

12. Umthelela wemvelo:

Nakuba i-HEC ngokuvamile ibhekwa njengobungani bemvelo, umthelela wemvelo jikelele woketshezi lokumba, okuhlanganisa i-HEC, yisihloko sokukhathazeka okuqhubekayo nocwaningo.

13. Ukucatshangelwa kwezindleko:

Ukuphumelela kwezindleko zokusebenzisa i-HEC kuketshezi lokumba kuyacatshangelwa, lapho opharetha bekala izinzuzo zesengezo ngokumelene nezindleko.

Ekuphetheni:

Kafushane, i-hydroxyethyl cellulose iyisengezo esibalulekile embonini yokumba uwoyela, enomthelela empumelelweni nasekusebenzeni kahle kokusebenza kokumba. Imisebenzi yayo eminingi, ehlanganisa ukuguqulwa kwe-rheology, ukulawulwa kokuhlunga, ukuhlanzwa kwemigodi nokugcoba, kuyenza ibe yingxenye ebalulekile yoketshezi lokumba. Njengoba imisebenzi yokumba iqhubeka nokuthuthuka futhi imboni ibhekene nezinselele ezintsha nokucatshangelwa kwemvelo, i-HEC iyaqhubeka nokubamba iqhaza elibalulekile ekuqinisekiseni ukusebenza kahle nokusimama kokumbiwa kukawoyela. Ucwaningo oluqhubekayo nokuthuthukiswa kwe-polymer chemistry kanye nobuchwepheshe bokumba uketshezi kungase kube nomthelela ekuthuthukisweni okuqhubekayo nasekuthuthukisweni kokusetshenziswa kwe-hydroxyethyl cellulose embonini kawoyela negesi.