Kuyini ukusetshenziswa kwe-cellulose ekumba udaka

I-cellulose, i-carbohydrate eyinkimbinkimbi etholakala ezindongeni zamangqamuzana ezitshalo, idlala indima ebalulekile ezimbonini ezihlukahlukene, kuhlanganise nomkhakha kawoyela negesi. Ekudakeni kodaka, i-cellulose isebenza ngezinhloso eziningi ngenxa yezakhiwo zayo eziyingqayizivele nezici.

Ukumba udaka, okwaziwa nangokuthi uketshezi lokumba, kuyisici esibalulekile ohlelweni lokumba imithombo kawoyela negesi. Isebenza imisebenzi eminingana ebalulekile, okuhlanganisa ukupholisa kanye nokugcoba i-drill bit, ukuthwala amatshe okusika phezulu, ukugcina ukuqina kwe-wellbore, nokuvimbela ukulimala kokwakheka. Ukuze kufezeke le misebenzi ngempumelelo, udaka lokumba kufanele lube nezakhiwo ezithile ezifana ne-viscosity, ukulawulwa kokulahlekelwa uketshezi, ukumiswa kwezinto eziqinile, nokuhambisana nezimo ze-downhole.

I-Celluloseivamise ukusetshenziswa ekumba udaka njengesengezo esiyinhloko ngenxa yezakhiwo zayo ezihlukile ze-rheological kanye nokuhlukahluka. Omunye wemisebenzi eyinhloko ye-cellulose odakeni lokumba ukuhlinzeka nge-viscosity kanye nokulawulwa kwe-rheological. I-viscosity isilinganiso sokumelana koketshezi nokugeleza, futhi ibalulekile ekugcineni izici zokugeleza ezifiselekayo zokumba udaka. Ngokungeza i-cellulose, i-viscosity yodaka ingashintshwa ukuze ihlangabezane nezidingo ezithile zokusebenza kokumba. Lokhu kubaluleke kakhulu ekulawuleni izinga lokungena, ukuvimbela ukulahlekelwa uketshezi ekwakhekeni, kanye nokuthwala ama-drill cuttings phezulu.

i-cellulose isebenza njenge-viscosifier kanye ne-ejenti yokulawula ukulahlekelwa uketshezi ngesikhathi esisodwa. Njenge-viscosifier, isiza ukumisa kanye nokuthutha ama-drill cuttings phezulu, ukuwavimbela ukuba angazinzi futhi aqongelele phansi komthombo. Lokhu kuqinisekisa ukusebenza kahle kokumba futhi kunciphisa ubungozi bezigameko zamapayipi abhajwe. Ukwengeza, i-cellulose yakha ikhekhe lokuhlunga elincanyana, elingenakunyakaziswa ezindongeni zomthombo, okusiza ukulawula ukulahlekelwa koketshezi ekubunjweni. Lokhu kubalulekile ekugcineni ukuqina kwe-wellbore kanye nokuvimbela ukulimala kokubunjwa okubangelwa ukungena koketshezi.

Ngaphezu kwezakhiwo zayo zokulawula ukulahlekelwa kwe-rheological kanye noketshezi, i-cellulose iphinde inikeze izinzuzo zemvelo ekwenziweni kodaka lokumba. Ngokungafani nezithasiselo zokwenziwa, i-cellulose iyakwazi ukubola futhi ihambisana nemvelo, okwenza kube ukukhetha okuthandwayo kokumba okubucayi kwemvelo. I-biodegradability yayo iqinisekisa ukuthi ibhidlika ngokwemvelo ngokuhamba kwesikhathi, kunciphisa umthelela wemvelo wemisebenzi yokumba.

I-Cellulose ingafakwa ekubunjweni kodaka ngezindlela ezihlukahlukene, okuhlanganisa i-cellulose eyimpuphu, imicu ye-cellulose, kanye nokuphuma kwe-cellulose njengeI-carboxymethyl cellulose (CMC)futhii-hydroxyethyl cellulose (HEC). Ifomu ngalinye linikeza izinzuzo ezithile kanye nokusebenza kuye ngezidingo zomsebenzi wokumba.

I-cellulose eyimpushana ivame ukusetshenziswa njenge-viscosifier eyinhloko kanye ne-ejenti yokulawula ukulahlekelwa kwamanzi ezinhlelweni zodaka olusekelwe emanzini. Ihlakazeka kalula emanzini futhi ikhombisa izakhiwo ezinhle kakhulu zokulengiswa, okuyenza ilungele ukuthwala ama-drill cuttings phezulu.

Ngakolunye uhlangothi, imicu ye-cellulose mide futhi ine-fibrous kune-cellulose eyimpuphu. Zivame ukusetshenziswa ezinhlelweni zodaka ezinesisindo, lapho kudingeka khona uketshezi oluningi lokumba ukuze kulawulwe izingcindezi zokwakheka. Imicu ye-cellulose isiza ukuthuthukisa ubuqotho besakhiwo sodaka, ithuthukise ukusebenza kahle kokuhlanza imigodi, futhi inciphise i-torque nokudonsa ngesikhathi sokumba.

Okuphuma ku-cellulose njengeI-CMCfuthiI-HECizinhlobo ze-cellulose eziguqulwe ngamakhemikhali ezinikeza izici zokusebenza ezithuthukisiwe. Zivame ukusetshenziswa ezindaweni ezikhethekile zokumba udaka lapho izidingo ezithile zokusebenza zidinga ukuhlangatshezwana nazo. Isibonelo, i-CMC isetshenziswa kabanzi njenge-shale inhibitor kanye ne-ejenti yokulawula ukulahlekelwa uketshezi ezinhlelweni zodaka ezisekelwe emanzini, kuyilapho i-HEC isetshenziswa njenge-rheology modifier kanye ne-ejenti yokulawula ukuhlunga ezinhlelweni zodaka ezisekelwe kuwoyela.

i-cellulose idlala indima ebalulekile ekumbiweni kodaka ngenxa yezakhiwo zayo eziyingqayizivele nokuguquguquka. Ukusuka ekunikezeni i-viscosity kanye nokulawulwa kwe-rheological kuya ekuthuthukiseni ukulawulwa kokulahlekelwa uketshezi kanye nokusimama kwemvelo, i-cellulose inikeza izinzuzo eziningi ekusebenzeni kokumba. Njengoba imboni kawoyela negesi iqhubeka nokushintshashintsha, isidingo sezixazululo zodaka zokumba ezisebenza kahle nezihambisana nemvelo kulindeleke ukuthi sikhule, kuphinde kugqanyiswe ukubaluleka kwe-cellulose njengesengezo esibalulekile ekwakhekeni koketshezi lokumba.