Kungani i-Hydroxyethyl Cellulose (HEC) isetshenziswa ekubholeni i-oyili?

2. Imisebenzi Eyinhloko ye-HEC ku-Drilling Fluids

2.1 Isiguquli se-Rheology kanye nokulawula ukugoba

Esinye sezizathu eziyinhloko zokusebenzisa i-HEC oketshezini lokubhoboza yikhono layo lokulawula ukujiya. I-HEC iyamanzisa emanzini ukuze yakhe isixazululo esicacile nesijiyile, esingalungiswa ukuze sihlangabezane nezakhiwo ezithile zokugeleza ezidingekayo emisebenzini ehlukene yokubhoboza.

Umthamo Wokuthwala: Ukuqina okufanele kuqinisekisa ukuthi uketshezi lokubhoboza lungathwala izingcezu zokubhoboza kusukela phansi komthombo ziye phezulu.

Ukuzinza Kokumiswa: I-HEC isiza ekumiseni izinto zokulinganisa isisindo njenge-barite futhi ivimbele ukuqina lapho ukujikeleza kwegazi kuyeka.

 

2.2 I-ejenti Yokulawula Ukulahlekelwa Uketshezi

Ngesikhathi sokubhoboza, uketshezi lungangena ekwakhekeni okungenela amanzi, okubangela izinkinga ezifana nokulimala kokwakheka noma ukulahlekelwa ukujikeleza kwegazi. I-HEC yakha ikhekhe lesihlungi elincane, elingangeneli amanzi kakhulu odongeni olunembobo yomthombo elinciphisa ukulahleka koketshezi ekwakhekeni.

Ukuvikelwa Kokwakheka: Kunciphisa ingozi yokungena kwamanzi, okungaphazamisa ukwakheka noma ukunciphisa umkhiqizo we-hydrocarbon.

Ukuqina Kokugoba Okuthuthukisiwe: Kuthuthukisa amandla okuvala kanye nokuqina kwegoba ngokwakha isithiyo.

 

2.3 Ukuthuthukiswa Kokugcotshwa

I-HEC ithuthukisa ukugcotshwa koketshezi lokubhoboza, okubalulekile ekunciphiseni ukungqubuzana phakathi kwentambo yokubhoboza nodonga olumbozwe umgodi. Lokhu kuwusizo kakhulu ekubhobozeni okuqondiswe ngqo kanye nasemithonjeni efinyelela kude.

I-Torque Encishisiwe kanye Nokuhudula: Kuthuthukisa ukusebenza kahle kwemishini futhi kwandisa isikhathi sokuphila kwemishini.

Izehlakalo Ezincishisiwe Zepayipi Elibambekile: Kusiza ekugwemeni ukubambezeleka kokusebenza kanye nokungenelela okubizayo.

 

2.4 Ukuhambisana kanye Nemvelo Engeyona Ionic

Ngokungafani namanye ama-polymer, i-HEC ayiyona i-ionic, okwenza ihambisane nohlu olubanzi lwezithasiselo nezimo.

Ukubekezelela Usawoti: I-HEC igcina ukusebenza kwayo lapho kukhona usawoti kanye ne-brine, okuvame ukwakheka ngaphansi komhlaba.

Ukuhambisana Kwamakhemikhali: Akusebenzi kabi nezinye izithako zoketshezi lokubhoboza.

 

3. Izinzuzo Zokusebenzisa i-HEC Ekubhobheni Kwendawo Kawoyela

3.1 Ukuncibilika Kwamanzi Nokuxubana Okulula

I-HEC incibilika kalula emanzini ashisayo nabandayo, okuvumela ukulungiswa okuguquguqukayo koketshezi lokubhoboza. Ingafakwa amanzi kusengaphambili futhi ifakwe endaweni lapho kudingeka khona.

 

3.2 Ukuzinza Kokushisa

I-HEC isebenza kahle ngaphansi kwezimo zokushisa eziphakathi ezivame ukutholakala emisebenzini yasensimini kawoyela. Amazinga aguquliwe anokumelana nokushisa okuthuthukisiwe angasetshenziswa emithonjeni ejulile.

 

3.3 Ukubola Kwemvelo Nokuphepha Kwemvelo

I-HEC itholakala ku-cellulose yemvelo futhi iyabola, okwenza ibe nobungane kakhulu nemvelo kunamanye ama-polymer okwenziwa. Lokhu kubaluleke kakhulu ekusebenzeni ezindaweni ezizwela kakhulu imvelo.

 

3.4 Ukusebenza Okungabizi Kakhulu

Nakuba kungeyona i-polymer eshibhile kakhulu etholakalayo, i-HEC inikeza ibhalansi yokusebenza kanye nezindleko, inikeza ukulawula okuhle kakhulu kokulahlekelwa uketshezi kanye ne-viscosity ngesilinganiso esiphansi kakhulu.

 

4. Izindawo Zokusetshenziswa Emgodini Wokubhoboza Uphethiloli

I-HEC isetshenziswa kuyo yonke impilo yokubhoboza, ezinhlotsheni ezahlukene zoketshezi kanye nezinhlelo zokusebenza ezahlukahlukene:

 

4.1 Uketshezi Lokubhoboza Olusekelwe Emanzini

Ezinhlelweni zodaka ezisekelwe emanzini ahlanzekile noma emanzini anosawoti, i-HEC isebenza njenge-ejenti yokulawula ukuqina nokuhlunga.

Ilungele ukubhoboza imigodi ephezulu kanye nemigodi ephakathi nendawo lapho izimo zingabi nzima khona.

Isebenza kahle ezintweni eziqinile noma ezimanzini okubhoboza angenazo izinti.

 

4.2 Ukuqeda kanye noketshezi lokulungisa

Uketshezi lokuqeda lusetshenziswa ngemva kwesigaba sokubhoboza, ngesikhathi senqubo yokwenza umthombo ulungele ukukhiqizwa.

I-HEC inikeza izixazululo eziqinile nezinomonakalo omncane, okwenza kube kuhle kakhulu ezindaweni ezizwela ukwakheka.

Kuketshezi olusebenzayo, lugcina ukulawula kwemithombo futhi luvikele umkhiqizo wamanzi agciniwe.

 

4.3 Uketshezi Lokuqhekeka Nokupakisha Amatshe

I-HEC ingasetshenziswa futhi emisebenzini yokuqhekeka kwe-hydraulic lapho kudingeka khona uketshezi oluthwala i-viscous ukuze kuthuthwe ama-proppants.

Ekupakisheni amatshe ayigugu, i-HEC iyasiza ekulengiseni nasekubekeni amatshe ayigugu ngokulinganayo ukuze asekele imbobo yomthombo.

 

5. Izinselele kanye nemikhawulo

Nakuba i-HEC inenzuzo ngezindlela eziningi, inemikhawulo ethile:

Ukuwohloka Kokushisa: Emazingeni okushisa aphezulu (>150°C), i-HEC iqala ukonakala, ilahlekelwe ukujiya kanye nokusebenza kwayo. Lokhu kunciphisa ukusetshenziswa kwayo emithonjeni ejulile yokushisa okuphezulu ngaphandle kokuthi kusetshenziswe amazinga aguquliwe.

 

Ukuwohloka Kwamagciwane: Uma kungekho ama-biocides, i-HEC isengozini yokuhlaselwa ama-microbial, okuholela ekuqhekekeni nasekukhiqizweni kwegesi ohlelweni loketshezi.

 

Ukuzinza Okulinganiselwe Kokucheba: Ngaphansi kwezimo eziphezulu zokucheba, njengokucheba ngamaphampu noma ama-nozzle amancane, i-HEC ingalahlekelwa yi-viscosity ngokushesha kunezinye i-polymers zokwenziwa.