I-CMC isebenzisa Embonini Yokumba Kawoyela Nowoyela

I-sodium carboxymethyl cellulose (CMC) yenziwe nge-cellulose yemvelo ngokuguqulwa kwamakhemikhali kokuphuma emanzini e-cellulose ethers encibilikayo, iwuhlobo olubalulekile lwe-cellulose ether encibilikayo emanzini, impushana emhlophe noma ephuzi noma eyimbudumbudu, engeyona enobuthi, engenambimbi, ingancibilika. emanzini, inokuqina okuhle kokushisa nokumelana nosawoti, izakhiwo eziqinile ze-antimicrobial. I-slurry fluid elungiselelwe yilo mkhiqizo inokulahlekelwa kwamanzi okuhle, ukuvimbela nokumelana nokushisa okuphezulu. Isetshenziswa kakhulu embonini yokumba uwoyela, ikakhulukazi Imithombo yamanzi anosawoti kanye nokumba uwoyela ogwini.

I-sodium carboxymethyl cellulose CMC njenge-polymer encibilika emanzini, ingancibilika ngokushesha emanzini abandayo noma emanzini ashisayo; Njenge-ejenti yokuqina, i-ejenti yokulawula i-rheological, i-adhesive, stabilizer, i-colloid evikelayo, i-ejenti yokumiswa kanye ne-ejenti yokugcina amanzi, iyi-ejenti yokwelapha yodaka yokumba kanye nokulungiswa kokuphothula uketshezi lwamanzi ekusebenzeni kokumba uwoyela. Inezinga eliphezulu lokudonsa kanye nokumelana kahle nosawoti. I-CMC iyi-ejenti enhle kakhulu yokunciphisa ukulahlekelwa uketshezi yodaka lwamanzi ahlanzekile nodaka lwamanzi olwandle olugcwele usawoti, futhi inekhono elihle lokuphakamisa i-viscosity kanye nokumelana nokushisa okuphezulu (150).℃). Ifanele ukulungiswa kwamanzi olwandle ahlanzekile, amanzi olwandle kanye ne-saturated brine completion fluids, nesisindo se-calcium chloride singakhiwa sibe yizinhlobonhlobo zokuminyana koketshezi lokuqeda, kanye ne-viscosity yokugcwalisa uketshezi kanye nokulahlekelwa uketshezi oluphansi.

Isingeniso seI-CMC HV futhiI-CMC LV ku-petroleum drilling fluid

(1) Udaka lwe-CMC lungenza udonga lomthombo lube mncane futhi luqinile ikhekhe lokuhlunga elikwazi ukungena kancane, ukuze kwehliswe ukulahleka kwamanzi.

(2)Ngemva kokwengeza i-CMC odakeni, umshini wokubhoboza ungathola amandla okugunda okuqala aphansi, ukuze udaka lube lula ukukhulula igesi egoqwe kulo, futhi imfucumfucu ilahlwa ngokushesha emgodini wodaka.

(3) Ukumba udaka namanye amasampula okuhlakazwa amisiwe anesikhathi esithile sokuphila, esingaqiniswa futhi sinwetshwe ngokwengeza i-CMC.

(4) Udaka oluqukethe i-CMC aluthinteki kangako isikhunta ngakho-ke aludingi ukugcina i-PH ephezulu noma ukusebenzisa izilondolozi.

(5) Iqukethe i-CMC njenge-ejenti yokwelapha uketshezi lokuhlanza udaka, ingamelana nokungcoliswa kukasawoti omningi oncibilikayo.

Udaka oluqukethe i-CMC lunozinzo oluhle futhi lunganciphisa ukulahlekelwa kwamanzi ngisho noma izinga lokushisa lingaphezu kuka-150°C.

Qaphela: i-CMC ene-viscosity ephezulu kanye nezinga eliphakeme lokushintshwa lifanele udaka olunomthamo ophansi, kuyilapho i-CMC ene-viscosity ephansi kanye nezinga eliphezulu lokushintshwa lifanele udaka olunomthamo ophezulu. I-CMC kufanele ikhethwe ngokuya ngezimo ezihlukene ezifana nohlobo lodaka, isifunda nokujula komthombo.

Ukusetshenziswa okuyinhloko: I-CMC kuketshezi lokumba, uketshezi olufaka u-cementing kanye noketshezi oluqhekekayo, ukuphakamisa i-viscosity neminye imisebenzi, ukuze kuzuzwe. Ukuze uvikele udonga, phatha izicucu zokumba, uvikele kancane, uvikele ukulahleka kodaka, uthuthukise indima yesivinini sokumba. Engeza ngokuqondile noma nge-glue ukwengeza udaka, engeza i-0.1-0.3% odakeni lwamanzi ahlanzekile, engeza i-0.5-0.8% odakeni lwamanzi anosawoti.

Izici zomkhiqizo:

1. Umkhiqizo uyi-polymer encibilikayo emanzini eqondile egcina inani eliphansi le-N futhi engalungiswa kahle uma yengezwe oketshezini lokumba.

Iphethini yokugeleza. Inezinzuzo zokucindezela ukuhlakazeka kwe-shale, ukumelana nokungcoliswa kwe-ion ye-inorganic, ukunciphisa ukulahlekelwa uketshezi, ukwandisa izinga lokumba kanye nokunciphisa izindleko.

2. Njengomlawuli wephethini yokugeleza yoketshezi lokumba, umkhiqizo unonyaka ohlukile, ukusebenza kokunciphisa ukulahlekelwa kokuhlunga kanye nomsebenzi wokulungisa ukugeleza kokugeleza futhi ungcono

Ingasetshenziswa njenge-viscosity ekhulayo kanye ne-ejenti yokunciphisa ukuhlunga emanzini ahlanzekile namanzi anosawoti.

1. Inokumelana okuhle nokungcola kanye nokumelana nezinga lokushisa.

Ukusetshenziswa kwe-sodium carboxymethyl cellulose CMC embonini yokumba uwoyela

1. Ukusetshenziswa kwe-sodium carboxymethyl cellulose CMC oketshezini lokumba

Uketshezi lokumba olungahlakazeki olufakwe i-CMC lunamandla okuthwala ama-cuttings, luvimbela ukuhlakazeka kobumba, lwehlisa isivinini sokudonsa ubumba, lunenzuzo ekuzinzeni kwe-wellbore futhi lwenza ngempumelelo izinga lokumba.

Uketshezi lokumba oluhlakazekile olune-CMC lunekhono elihle lokumiswa, lungamukela isigaba esiqinile, lungathuthukisa kakhulu ukuzinza kwezinhlayiyana, lufaneleka kakhulu uketshezi lokumba olunomthamo omkhulu, futhi lungalungisa ngokuphumelelayo izakhiwo ze-rheological zoketshezi lokumba; Ikhekhe lodaka eliminyene nelisezingeni eliphezulu lingakhiwa oketshezini lokumba, olunokunciphisa ukulahlekelwa kokuhlunga okuhle kakhulu kanye nokunciphisa amanzi mahhala.

Uketshezi lokumba oluphathwa nge-calcium olune-CMC lunokumelana okuhle kwe-calcium futhi lungavimbela ukugeleza ngokweqile kwezinhlayiya zobumba ohlelweni olubangelwa ama-ion e-calcium, ukuze uketshezi lokumba lukwazi ukugcina isimo esihle sokugeleza futhi lugcine okuqukethwe okuqinile okuqinile kanye nezakhiwo ze-rheological zoketshezi lokumba, ukuze kuqinisekiswe ukusebenza okuhle nokuzinzile koketshezi lokumba.

Ngokucushwa kwe-CMC ye-brine, uketshezi lokumba amanzi olwandle, uketshezi lokumba olugcwele amanzi anosawoti agcwele usawoti, ukuzwela okuphansi kukasawoti, ukumelana okuqinile nosawoti ne-calcium, i-magnesium, esetshenziswa njengesilawuli se-rheological, ngaphansi kwesimo somthamo ophansi wokumba uketshezi lwe-rheology ngokushesha. ukulungiswa, kungenza ngokushesha ukusikwa ngesikhathi esifanayo, gcina okuqukethwe okuqinile okuphansi, kuyasiza ukuthuthukisa isivinini sokumba. Uma isetshenziswa njengesinciphisi sokulahlekelwa uketshezi, ikhekhe lodaka eliminyene lingakhiwa. Njengoba i-filtrate ehlungiwe ngekhekhe lokuhlunga iseduze nokubunjwa kwamanzi ayisisekelo, i-filtrate inomonakalo omncane kungqimba lwamafutha negesi.

Uketshezi lokumba olususelwa ku-potassium olufakwe i-CMC lunokuzwela okuphansi kukasawoti we-potassium, usawoti we-calcium nosawoti we-magnesium. Ingakwazi ukulungisa ngokushesha nangempumelelo izakhiwo ze-rheological zalolu hlobo loketshezi lokumba. Ayigcini nje ngokuba nomphumela omuhle wokulahlekelwa kokuhlunga, kodwa futhi inekhono elihle kakhulu lokuhlanza ama-cuttings kanye nokubhoboza izingcezu.

I-polymer drilling fluid efakwe i-CMC iyahambisana namanye ama-polymers, inekhono eliqinile lokumisa, futhi ingahlanza ukusikwa ngesikhathi nangendlela ephumelelayo. Ngaphezu kwalokho, uketshezi lokumba luphinde lube i-ejenti yokulahlekelwa uketshezi oluhle kakhulu olunama-solids aphansi kanye nokuhlakazeka kobumba.

Uketshezi lokumba oluqinile oluphansi olufakwe i-CMC lungalungisa ngokushesha nangokuphumelelayo izici ze-rheological zoketshezi lokumba, ikhono elihle kakhulu lokumiswa, ukususa ama-cuttings ngesikhathi nangempumelelo, ukugcina uketshezi lokumba lunokuqukethwe okuqinile okuphansi, ukuthuthukisa isivinini sokumba, ukusimamisa udonga lwe-borehole, futhi kube noketshezi oluhle kakhulu. umphumela wokunciphisa ukulahlekelwa.

Uketshezi lokumba oluhambisana nemvelo olufakwe i-CMC alunangozi emvelweni, alunabuthi, alunangozi futhi alunaphunga, luyabola futhi akulula ukonakala ngesikhathi lusetshenziswa. Uketshezi lokumba lunezindleko eziphansi zokunakekela futhi impilo nokuphepha kwabasebenzi bokwakha kuqinisekisiwe. Ilungele ukubhoboza ngaphansi kwezimo ezihlukahlukene ze-geological eziyinkimbinkimbi futhi ayinabungozi ekukhiqizeni kwezolimo.

2. Ukusetshenziswa kwe-sodium carboxymethyl cellulose CMC oketshezini lukasimende (uketshezi lokuqeda)

Ukugeleza koketshezi lukasimende kuthuthukiswa nge-CEmenting slurry elungiselelwe nge-CMC, ehlinzeka nge-viscosity yokuqala efanele kanye nokulahlekelwa uketshezi oluphansi, kuyilapho ivikela umthombo futhi ivimbela uketshezi ukuthi lungangeni ezimbotsheni kanye nokuphuka.

Abapakishi abahlome nge-CMC bangalungisa ukugcwala koketshezi, i-thixotropy kanye nekhono lokumisa isigaba esiqinile. Ngenxa yokuthi imikhiqizo inokumelana nosawoti omuhle (ikakhulukazi ama-ion ensimbi e-monovalent), imikhiqizo ingasetshenziswa ukuhlanza amapaki amanzi anosawoti ngempumelelo.

Uketshezi olusebenzayo olulungiswe nge-CMC yenkampani aluqinile futhi aluvimbeli ukungena kwendawo ekhiqizayo ngenxa yokuqinile noma ukulimaza indawo yokukhiqiza. Futhi inokulahlekelwa kwamanzi aphansi, ukuze amanzi abe ungqimba lokukhiqiza ancishiswe, futhi amanzi azovinjelwa yi-emulsion futhi enze into yokubamba amanzi. Uketshezi lokusebenza olwakhiwe nge-CMC kanye ne-PAC lunikeza izinzuzo ngaphezu kolunye uketshezi olusebenzayo. Vikela indawo yokukhiqiza ekulimaleni unomphela; Ukuphatheka kwe-cleanhole kanye nokugcinwa kwemigodi encishisiwe; Iyakwazi ukumelana nokungenwa kwamanzi nodaka, futhi ayivamisile ukuba namabhamuza; Ingagcinwa noma iphinde isetshenziswe kusukela emthonjeni kuya emthonjeni ngenani eliphansi kunoketshezi oluvamile olusebenza ngodaka.

3. Ukusetshenziswa kwe-carboxymethyl cellulose sodium CMC oketshezini lwe-fracturing

Ilungiselelwe nge-CMC fracturing fluid, ingathuthukisa ngokushesha i-viscosity ye-fracturing fluid, ingakwazi ukuthwala kahle i-proppant emthonjeni kawoyela, isungule iziteshi ze-sepage, inciphise ngokushesha inani lokuhlunga, ingcindezi yokwakheka ikhuphuka ngokushesha, futhi ifinyelele ukudluliselwa okuphumelelayo kwezingcindezi, umkhiqizo awunazo izinsalela, awukho umonakalo kokungaphansi, ukudonsa okuphezulu, ukungqubuzana okuncane, futhi unamandla okuthwala i-proppant.

Ukupakisha, ukugcinwa nezokuthutha:

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