Iyini i-PAC emanzini okumba?

Emanzini okumba, i-PAC ibhekisela ku-polyanionic cellulose, okuyisithako esiyinhloko esisetshenziswa ekumbeni ukwakheka kodaka. Ukumba udaka, okwaziwa nangokuthi uketshezi lokumba, kudlala indima ebalulekile enqubweni yokumba yemithombo kawoyela negesi. Isebenza ngezinhloso ezehlukene, njengokupholisa nokugcoba izingcezu zokubhoboza, ukuhambisa okusikiwe phezulu, ukuhlinzeka ngokuzinza kwe-wellbore, nokulawula ingcindezi yokwakheka.

I-Polyanionic cellulose iyi-polymer encibilika emanzini etholakala ku-cellulose, i-polymer yemvelo etholakala ezitshalweni. I-PAC yengezwa kuketshezi lokumba ukuze kuthuthukiswe i-rheology yabo kanye nezakhiwo zokulawula ukuhlunga.

1. Isakhiwo samakhemikhali kanye nezakhiwo ze-polyanionic cellulose (PAC):

I-PAC iyi-polymer ye-cellulose eguquliwe ene-anionic charge.
Ukwakheka kwayo kwamakhemikhali kuyenza incibilike kalula emanzini, yakha isixazululo esizinzile.
Imvelo ye-anionic ye-PAC inikela ekhonweni layo lokusebenzelana nezinye izingxenye oketshezini lokumba.

2. Izici ze-rheological ezithuthukisiwe:

I-PAC isetshenziselwa ukuguqula izakhiwo ze-rheological zoketshezi lokumba.
Ithinta i-viscosity, amandla ejeli nokulawulwa kokulahlekelwa uketshezi.
Ukulawula i-rheology kubalulekile ekuthuthukiseni ukuthuthwa kwe-cuttings kanye nokugcina ukuqina kwe-wellbore.

3. Ukulawula isihlungi:

Omunye wemisebenzi eyinhloko ye-PAC ukulawula ukulahleka koketshezi ngesikhathi sokumba.
Yakha ikhekhe lokuhlunga elincanyana, elingenakunyakaziswa ezindongeni zomthombo, ukuvimbela ukulahlekelwa uketshezi lokumba ekubunjweni.
Lokhu kusiza ukugcina izakhiwo ezifiselekayo zodaka lokumba futhi kuvimbele ukulimala kokubunjwa.

4. Ukuzinza kwe-Wellbore:

I-PAC isiza ekuzinzeni kwe-wellbore ngokuvimbela uketshezi oluningi ukuthi lungangeni ekwakhekeni.
Kusiza ukunciphisa ukunamathela komehluko nezinye izinkinga ezihlobene nokungaqini kahle kwe-wellbore.
Ukuzinza kwe-Wellbore kubalulekile empumelelweni yokusebenza kokumba.

5. Izinhlobo ze-PAC kanye nezicelo zazo:

Amabanga ahlukene e-PAC ayatholakala kuye ngesisindo samangqamuzana nezinga lokushintshwa.
Ama-PAC e-viscosity aphezulu avame ukusetshenziswa lapho kudingeka khona ukulawula okuphezulu kwe-rheology.
Kuzinhlelo zokusebenza lapho ukulawulwa kokulahlekelwa uketshezi kuwukukhathazeka okuyinhloko, i-PAC ye-viscosity ephansi ingakhethwa.

6. Ukucatshangelwa kwemvelo:

I-PAC ivame ukubhekwa njengehambisana nemvelo ngoba iyakwazi ukubola.
Ukuhlolwa komthelela kwezemvelo kwenziwa ukuze kuqinisekiswe ukusetshenziswa nokulahlwa ngendlela efanele koketshezi lokumba oluqukethe i-PAC.

7. Ukulawulwa kwekhwalithi nokuhlola:

Izinyathelo eziqinile zokulawula ikhwalithi ziyasetshenziswa ukuze kuqinisekiswe ukusebenza kahle kwe-PAC kuketshezi lokumba.
Ukuhlolwa okuhlukahlukene, okuhlanganisa izilinganiso ze-rheological kanye nokuhlolwa kokulahlekelwa uketshezi, kwenziwa ukuze kuhlolwe ukusebenza kodaka lokumba oluqukethe i-PAC.

8. Izinselelo nezinto ezintsha:

Naphezu kokusetshenziswa kwayo kabanzi, izinselele ezinjengokuqina kokushisa nokuhambisana nezinye izithasiselo zingase ziphakame.
Ucwaningo oluqhubekayo nokusungula kunikezelwe ekuxazululeni lezi zinselele kanye nokwenza ngcono ukusebenza kwe-PAC kuketshezi lokumba.

I-Polyanionic cellulose (PAC) iyingxenye ebalulekile ekubunjweni koketshezi lokumba futhi inomthelela ekulawuleni i-rheology, ukulawulwa kokuhlunga kanye nokuzinza kwe-wellbore. Izakhiwo zayo eziyingqayizivele ziyenza ibe isithasiselo esibalulekile embonini yokumba uwoyela negesi, idlala indima ebalulekile empumelelweni nasekusebenzeni kahle kokusebenza kokumba.