Ukusetshenziswa kwe-carboxymethyl cellulose (CMC) ku-dring fluids

Ukushayela uketshezi, okwaziwa kakhulu njengodaka lokumba, lubalulekile kwinqubo yokumba kawoyela negesi. Imisebenzi yabo eyinhloko ifaka ukugcoba nokupholisa i-drill bit, ukuhambisa izithombo zokumba, ukugcina ingcindezi ye-hydrostatic ukuvikela uketshezi lokwakheka kusuka ekungeneni komthombo, futhi kuqiniswe izindonga ze-Wellbore. Ukwakheka kwamanzi okumba uketshezi kungahluka, kepha ngokuvamile kuqukethe i-fluid fluid, izengezo, kanye nama-ejenti wokunciphisa umzimba. I-Carboxymethyl Cellulose (CMC) iyisengezo esemqoka kulamanzi ngenxa yezakhiwo zayo ezihlukile, ethuthukisa ukusebenza kahle nokusebenza kahle kwemisebenzi yokumba.

Izakhiwo ze-carboxymethyl cellulose

I-Carboxymethyl Cellulose iyi-polymer ensolule yamanzi ethathwe ku-cellulose. Isakhiwo saso samakhemikhali siqukethe amaketanga we-cellulose enamaqembu e-carboxymethyl (-CH2-COOH) anamathiselwe emaqenjini ama-hydroxyranose monomers. Izinga lokufakwa esikhundleni (DS) lalawa maqembu linquma i-solubity yalo kanye nezimpawu ze-viscosity. I-CMC ingakhiqizwa emabangeni ahlukahlukene, ngokubonakala okuphezulu kanye nezinhlobo eziphansi ze-viscosity eziklanyelwe izinhlelo ezithile.

Imisebenzi ye-CMC ku-Drilling Fluids

I-Viscosity Control: I-CMC isetshenziselwa ukuguqula i-viscosing yoketshezi lokumba. Kuyasiza ekwakheni isakhiwo esinjenge-gel esithuthukisa ukumiswa kokuncishiswa kwe-dring, ukubavimbela ekuxazululeni ezansi komthombo we-Wellbore. Le mpahla ibalulekile ukuze kugcinwe ukugeza okuhlanzekile kwe-BORHOLES kanye nokushayela okusebenzayo. Amamaki aphezulu abonayo e-CMC aphumelela kakhulu ekwakheni uketshezi olusebusweni olungathwala ukusika phezulu.

Ukulawulwa kwe-Filtration: I-CMC idlala indima ebalulekile ekulawuleni ukulahleka koketshezi ngesikhathi sokumba. Kwehlisa ukukhiqizwa kwekhekhe lokuhlunga okwakhiwa ezindongeni ze-Wellbore ngokwakha ungqimba oluncane, oluphansi. Lesi senzo sinciphisa ukuhlaselwa koketshezi okumba ekwakhekeni okuzungezile, kulondolozwa ubuqotho be-Wellbore nokuvimbela ukulimala okungaba khona kwiZindawo ezithwala i-Hydrocarbon. I-Low-Viscosity CMC ivame ukusetshenziselwa ukwahlulwa kwayo okuphezulu kokulawulwa kwangempela.

I-Lubrication: Izindawo zokugcoba ze-CMC zithuthukisa ukusebenza koketshezi lokumba, ukunciphisa ukungqubuzana phakathi kwentambo ye-drill kanye nomthombo. Lokhu kuncishiswa kwengxabano kunciphisa i-torque futhi kuhudule kwi-drill string, okuholela ekusebenzeni okubushelelezi okubushelelezi futhi kunciphise ukugqokwa nokudambisa ukugqoka nokudabula imishini yokumba.

Ukuqiniswa kwe-Shale: I-CMC isiza ekuqiniseni ukwakheka kwama-shale okuhlangane nakho ngesikhathi sokumba. Isebenza njenge-colloid evikelayo, yakha isithiyo ebusweni bezinhlayiya ze-shale futhi ivikele i-hydration yabo nokuqhekeka kwabo. Lokhu kuzinza kubalulekile ekuvikeleni ukungazinzi kahle, okungaholela ezinkingeni ezinjengezimboni zezimba ezinamathela.

Ukuzilolonga lokushisa: I-CMC ibonisa ukuqina okuhle okushisayo, ukugcina izakhiwo zayo ezisebenzayo ngamazinga okushisa ahlangabezana nezimo zephansi. Lokhu kuzinza kuqinisekisa ukusebenza okungaguquki koketshezi lokumba ngisho nasezindaweni ezisezingeni eliphakeme, okwenza lilungele imithombo ejulile neyoma-geothermal.

Izinzuzo zokusebenzisa i-CMC ku-Dringing Fluids

Ukuvumelana kwemvelo Ukusetshenziswa kwayo kuqondanisa nemithetho namazinga okuhloswe ngakho ukunciphisa umthelela wezemvelo wokusebenza kokushayela, ikakhulukazi ezindaweni ezibucayi.

Ukusebenza kwezindleko: I-CMC ayibizi kakhulu uma iqhathaniswa namanye ama-polymers okwenziwa asetshenziswa kumanzi okumba. Ukusebenza kwayo ekugxilisweni okuncane kunomthelela okongeni kwezindleko ngokunciphisa umthamo wezengezo odingekayo. Ngaphezu kwalokho, amandla ayo okuthuthukisa ukusebenza kahle kokumba kanye nokunciphisa ukugqokwa kwemishini kungaholela ezinhlolweni ezengeziwe zomnotho.

Ukuguquguquka: I-CMC iyahambisana nezinhlobo ezahlukahlukene zokumba uketshezi, kufaka phakathi izinhlelo ezisuselwa emanzini, ezisuselwa ku -woyela, kanye nezinhlelo ezenzelwe zokwenziwa. Lokhu kuguqulwa kuvumela ukusetshenziswa kwayo ezindaweni ezihlukile zokumba, kusuka olwandle kuya olwandle nasekuveleni okuvamile kuya emithonjeni engajwayelekile.

Ukusebenziseka kalula: I-solubility ye-CMC emanzini ivumela ukufakwa kalula kube ukumba uketshezi lwamanzi. Ingangezwa ngqo uketshezi ngaphandle kokudinga izinqubo zokuxuba eziyinkimbinkimbi, ukwenza lula inqubo yokulungiselela uketshezi.

Izimo Zokusebenza

Uketshezi olususelwa emanzini olususelwa emanzini: Kumanzi okumba okususelwa emanzini, i-CMC isetshenziselwa ukuthuthukisa ukubonwa, ukulawula ukulahleka kwamanzi uketshezi, bese iqinisa umthombo. Ukusebenza kwayo kulezi zinzilo kubhalwe kahle, futhi kuvame ukusetshenziswa ngokuhlanganiswa namanye ama-polymers kanye nezithasiselo ukufezekisa izakhiwo ezifiselekayo ze-fluid.

Uketshezi lokumba olususelwa kuwoyela Kulezi zicelo, i-CMC imvamisa iguqulwa ukuze ithuthukise i-solubity yayo emafutheni noma ifakwe esigabeni samanzi se-emulsion. Indima yayo kulezi zinkezi ifana naleso sinye uketshezi olususelwa emanzini, ukuhlinzeka ngokusobala kanye nokulawulwa kokuhlunga.

Ukushayela okushisa okuphezulu: Ukusebenza okushisa kakhulu kokushisa, njenge-geothermal Wells, amamaki akhethekile we-CMC ngokuqina okuthuthukile okusetshenzisiwe. Lawa mabanga agcina ukusebenza kwawo emazingeni okushisa aphakeme, aqinisekisa ukusebenza okungaguquki koketshezi lokumba.

Ukumba okungajwayelekile: ekuvuthweni okungajwayelekile, kufaka phakathi ukumba okuvundlile kanye nokuqhekeka okuvundlile, i-CMC isiza ukuphatha izinselelo ze-geometries eyinkimbinkimbi ye-Wellbore kanye nezindawo eziphakeme kakhulu. Amandla awo okuqinisa i-Wellbore nokulawula ukulahlekelwa koketshezi kubaluleke kakhulu kulezi zimo.

IZINSELELE NOKUFUNDA

Ngenkathi i-CMC inikeza izinzuzo eziningi ekudleni uketshezi, izinselelo ezithile kanye nokucatshangelwa kufanele kubhekwane kuyo ukuze kusetshenziswe ukusetshenziswa kwayo:

Ukuvumelana nezinye izengezo: Ukusebenza ngempumelelo kwe-CMC kungathonywa ukuba khona kwezinye izengezo kuketshezi oludonsa. Ukwakheka ngokucophelela nokuhlolwa kuyadingeka ukuze kuqinisekiswe ukuhambisana futhi ugweme ukusebenzisana okungaba khona okunganciphisa ukusebenza koketshezi.

Isikhathi se-Hydration: I-CMC ingadinga inani elithile lesikhathi ukuze lihlangane ngokugcwele futhi lifinyelele izakhiwo ezisebenzayo ku-drive fluid. Lesi sici kumele sibhekwe ngesikhathi sokulungiselela nenqubo yokuxuba ukuqinisekisa ukuthi uketshezi lufinyelela isifiso esifunekayo se-viscosity kanye nezimpawu zokulawula ukuhlungwa.

Ukushisa nokushisa kwe-PH: Ukusebenza kwe-CMC kungathinteka amazinga okushisa aphezulu nemimo ye-PH. Ukukhetha ibanga elifanele le-CMC kanye nokulungisa ukwakhiwa kwamanzi kunganciphisa le miphumela futhi kuqinisekiswe ukusebenza okungaguquki ngaphansi kwezimo ezahlukahlukene.

I-Carboxymethyl Cellulose iyisengezo esiguquguqukayo futhi esebenzayo ekuvuthweni uketshezi, okunikeza izinzuzo ekunikezelweni kwe-viscosity, ukulawulwa kwe-Filtration, ukuthambeka kwe-shale, ukuqina kwezinga lokushisa. Ukuhambisana kwayo kwezemvelo, ukusebenza kwezindleko, kanye nokusebenziseka kalula kwenza kube yingxenye ebalulekile ekuvuthweni kokwakheka koketshezi ezinhlobonhlobo zezicelo. Njengoba isidingo semisebenzi yokumba esebenza kahle futhi esimeme siyaqhubeka nokukhula, indima ye-CMC ekuthuthukiseni ukusebenza kwamanzi uketshezi izohlala ibalulekile. Ngokubhekana nezinselelo ezihambisana nokusetshenziswa kwayo nokwenza kahle ukwakhiwa koketshezi, imboni ingathola amandla aphelele we-CMC ukufeza imiphumela ephephe futhi esebenza kahle.