Iyini ukusetshenziswa kwe-cellulose ekubholeni udaka

I-Cellulose, i-carbohydrate eyinkimbinkimbi etholakala ezindongeni zamaseli ezitshalo, idlala indima ebalulekile ezimbonini ezahlukahlukene, okuhlanganisa nomkhakha kawoyela negesi. Ekubholeni udaka, i-cellulose isebenza ngezinjongo eziningi ngenxa yezakhiwo zayo ezihlukile kanye nezici zayo.

Udaka lokubhoboza, olwaziwa nangokuthi uketshezi lokubhoboza, luyingxenye ebalulekile enkambisweni yokubhoboza imithombo kawoyela negesi. Lufeza imisebenzi eminingana ebalulekile, okuhlanganisa ukupholisa nokugcoba i-drill bit, ukuthwala izingcezu zamatshe phezulu, ukugcina ukuzinza kwe-wellbore, nokuvimbela umonakalo wokwakheka. Ukuze kufezwe le misebenzi ngempumelelo, udaka lokubhoboza kumele lube nezakhiwo ezithile ezifana ne-viscosity, ukulawula ukulahleka koketshezi, ukumiswa kwezinto eziqinile, kanye nokuhambisana nezimo ze-downhole.

I-CelluloseIvame ukusetshenziswa ekwakhiweni kodaka lokubhoboza njengesithako esiyinhloko ngenxa yezakhiwo zalo ezihlukile ze-rheological kanye nokuguquguquka. Omunye wemisebenzi eyinhloko ye-cellulose odakeni lokubhoboza ukunikeza i-viscosity kanye nokulawula i-rheological. I-viscosity iyisilinganiso sokumelana koketshezi nokugeleza, futhi kubalulekile ekugcineni izakhiwo zokugeleza ezifiselekayo zodaka lokubhoboza. Ngokufaka i-cellulose, i-viscosity yodaka ingalungiswa ukuze ihlangabezane nezidingo ezithile zomsebenzi wokubhoboza. Lokhu kubaluleke kakhulu ekulawuleni izinga lokungena, ukuvimbela ukulahleka koketshezi ekwakhekeni, kanye nokuthwala izingcezu zokubhoboza phezulu.

I-cellulose isebenza njenge-viscosifier kanye ne-ejenti yokulawula ukulahlekelwa uketshezi ngasikhathi sinye. Njenge-viscosifier, iyasiza ekumiseni nasekuthutheni izingcezu zokubhoboza ziye phezulu, izivimbele ukuthi zingahlali futhi ziqongelelane phansi kwe-wellbor. Lokhu kuqinisekisa ukusebenza kahle kokubhoboza futhi kunciphisa ingozi yezehlakalo zamapayipi abambekile. Ngaphezu kwalokho, i-cellulose yakha ikhekhe lokuhlunga elincane, elingangeni amanzi ezindongeni ze-wellbor, elisiza ukulawula ukulahlekelwa uketshezi ekwakhekeni. Lokhu kubalulekile ekugcineni ukuzinza kwe-wellbor nokuvimbela umonakalo wokwakheka okubangelwa ukuhlasela koketshezi.

Ngaphezu kwezakhiwo zayo zokulawula ukulahlekelwa yi-rheological kanye noketshezi, i-cellulose inikeza nezinzuzo zemvelo ekwakhiweni kodaka lokubhoboza. Ngokungafani nezengezo zokwenziwa, i-cellulose iyabola futhi inobungani nemvelo, okwenza kube ukukhetha okuthandwayo kwemisebenzi yokubhoboza ezwela imvelo. Ukubola kwayo kuqinisekisa ukuthi iyabola ngokwemvelo ngokuhamba kwesikhathi, kunciphisa umthelela wemisebenzi yokubhoboza emvelweni.

I-cellulose ingafakwa ekwakhiweni kodaka lokubhoboza ngezindlela ezahlukene, okuhlanganisa i-cellulose eyimpuphu, imicu ye-cellulose, kanye nezinto eziphuma ku-cellulose ezifanai-carboxymethyl cellulose (CMC)futhii-hydroxyethyl cellulose (HEC)Ifomu ngalinye linikeza izinzuzo ezithile kanye nokusebenza kuye ngezidingo zomsebenzi wokubhoboza.

I-cellulose enophuphu ivame ukusetshenziswa njenge-viscosifier eyinhloko kanye ne-ejenti yokulawula ukulahlekelwa koketshezi ezinhlelweni zodaka ezisekelwe emanzini. Ihlakazeka kalula emanzini futhi inezakhiwo ezinhle kakhulu zokumiswa, okwenza ibe yindawo ekahle yokuthwala izingcezu zokubhoboza phezulu.

Ngakolunye uhlangothi, imicu ye-cellulose inde futhi inemicu eminingi kune-cellulose ephuthiwe. Ivame ukusetshenziswa ezinhlelweni zodaka ezinesisindo, lapho kudingeka khona uketshezi lokubhoboza olunobuningi obukhulu ukulawula ukucindezeleka kokwakheka. Imicu ye-cellulose isiza ekuthuthukiseni ubuqotho besakhiwo sodaka, ithuthukise ukusebenza kahle kokuhlanza imigodi, futhi inciphise i-torque kanye nokuhudula ngesikhathi sokubhoboza.

Izinto ezisuselwa ku-cellulose ezifanaI-CMCfuthiI-HECziyizinhlobo ze-cellulose eziguqulwe ngamakhemikhali ezinikeza izakhiwo zokusebenza ezithuthukisiwe. Zivame ukusetshenziswa ekusetshenzisweni okukhethekile kokubhoboza udaka lapho kudingeka kuhlangatshezwane nezidingo ezithile zokusebenza. 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 ku-oyili.

I-cellulose idlala indima ebalulekile ekubumbeni udaka ngenxa yezakhiwo zayo ezihlukile kanye nokuguquguquka kwayo. Kusukela ekuhlinzekeni nge-viscosity kanye nokulawula i-rheological kuya ekuthuthukiseni ukulawulwa kokulahlekelwa uketshezi kanye nokusimama kwemvelo, i-cellulose inikeza izinzuzo eziningi emisebenzini yokumba. Njengoba imboni kawoyela negesi iqhubeka nokuthuthuka, isidingo sezixazululo zodaka lokumba ezisebenza kahle nezinobungane nemvelo kulindeleke ukuthi sande, okugcizelela kakhulu ukubaluleka kwe-cellulose njengesithasiselo esibalulekile ekubumbeni uketshezi lokumba.