Ukusetyenziswa kwe-sodium carboxymethyl cellulose kwi-drilling fluid

I-sodium carboxymethyl cellulose (i-CMC-Na ngokufutshane) yinto ebalulekileyo yepolymer enyibilikayo emanzini kwaye isetyenziswa ngokubanzi kwi-oyile yokwemba ulwelo. Iimpawu zayo ezizodwa ziyenza ibe yinto eyimfuneko kwinkqubo yolwelo lokomba.

1. Iimpawu ezisisiseko ze-sodium carboxymethyl cellulose

I-sodium carboxymethyl cellulose yi-anionic cellulose ether eyenziwa yi-cellulose emva konyango lwe-alkali kunye ne-chloroacetic acid. Isakhiwo sayo se-molecular iqulethe inani elikhulu lamaqela e-carboxymethyl, okwenza kube ne-solubility efanelekileyo yamanzi kunye nokuzinza. I-CMC-Na inokwenza isisombululo esiphezulu se-viscosity emanzini, kunye nokuqina, ukuzinzisa kunye neempawu zefilimu.

2. Ukusetyenziswa kwe-sodium carboxymethyl cellulose kwi-drilling fluid

Ukutyeba

I-CMC-Na isetyenziswa njenge-thickener kulwelo lokomba. Umsebenzi wayo ophambili kukwandisa i-viscosity yokucoca ulwelo kunye nokuphucula amandla ayo okuthwala i-rock cuts kunye ne-drill cuttings. I-viscosity efanelekileyo ye-drilling fluid inokuthintela ngokufanelekileyo ukuwa kodonga kunye nokugcina uzinzo lwequla.

Isinciphisi selahleko yolwelo

Ngexesha lenkqubo yokomba, ulwelo lokomba luya kungena kwiipores zokubunjwa, lubangele ukulahleka kwamanzi kulwelo lokomba, olungachithi nje kuphela ulwelo lokomba, kodwa lunokubangela ukudilika kodonga kunye nomonakalo wedama. Njengokunciphisa ilahleko yolwelo, i-CMC-Na inokwenza ikeyiki eshinyeneyo yokucoca eludongeni lwequla, inciphisa ngokufanelekileyo ilahleko yokuhluzwa kolwelo lokomba kunye nokukhusela ukwakheka kunye nodonga lomthombo.

Isithambiso

Ngexesha lenkqubo yokomba, ukukhuhlana phakathi kwe-drill bit kunye nodonga lomthombo kuya kuvelisa ubushushu obuninzi, okubangela ukuguga kwesixhobo sokuqhuba. Ukuthambisa kwe-CMC-Na kunceda ukunciphisa ingxabano, ukunciphisa ukuguga kwesixhobo sokomba, kunye nokuphucula ukusebenza ngokufanelekileyo.

Isizinzi

I-drilling fluid inokujikeleza okanye ithobe phantsi kobushushu obuphezulu kunye noxinzelelo oluphezulu, ngaloo ndlela ilahlekelwa ngumsebenzi wayo. I-CMC-Na inozinzo oluhle lwe-thermal kunye nokumelana netyuwa, kwaye inokugcina uzinzo lwe-drilling fluid phantsi kweemeko ezinzima kwaye yandise ubomi bayo benkonzo.

3. Inkqubo yesenzo se-sodium carboxymethyl cellulose

Uhlengahlengiso lwe-Viscosity

Isakhiwo se-molecular ye-CMC-Na iqulethe inani elikhulu lamaqela e-carboxymethyl, anokwenza i-hydrogen bonds emanzini ukwandisa i-viscosity yesisombululo. Ngokuhlengahlengisa ubunzima bemolekyuli kunye nenqanaba lokutshintsha kwe-CMC-Na, i-viscosity ye-drilling fluid inokulawulwa ukuhlangabezana neemfuno zeemeko ezahlukeneyo zokomba.

Ulawulo lokuhluza

Iimolekyuli ze-CMC-Na zinokwenza ulwakhiwo lothungelwano olunamacala amathathu emanzini, olunokwenza ikeyiki eshinyeneyo yokucoca eludongeni lwequla kwaye inciphise ilahleko yokuhluzwa kolwelo lokomba. Ukwenziwa kwekhekhe lokucoca akuxhomekanga kuphela kugxininiso lwe-CMC-Na, kodwa nakwisisindo sayo se-molecular kunye ne-substitution degree.

Ukuthambisa

Iimolekyuli ze-CMC-Na zinokubhengezwa kumphezulu we-drill bit kunye nodonga lomthombo emanzini ukwenza ifilimu yokuthambisa kunye nokunciphisa i-coefficient ye-friction. Ukongeza, i-CMC-Na inganciphisa ngokungathanga ngqo ingxabano phakathi kwe-drill bit kunye nodonga lomthombo ngokuhlengahlengisa i-viscosity yolwelo lokomba.

Ukuzinza kwe-Thermal

I-CMC-Na inokugcina uzinzo lwesakhiwo sayo se-molekyuli phantsi kweemeko eziphezulu zobushushu kwaye ayifuni ukuthotywa kwe-thermal. Oku kungenxa yokuba amaqela e-carboxyl kwiimolekyuli zayo anokwenza iibhondi ze-hydrogen ezizinzileyo kunye neemolekyuli zamanzi ukuxhathisa umonakalo ophezulu wobushushu. Ukongeza, i-CMC-Na nayo inokuxhathisa ityuwa elungileyo kwaye inokugcina ukusebenza kwayo kulwakhiwo lwetyuwa. 

4. Imizekelo yeSicelo seSodium Carboxymethyl Cellulose

Kwinkqubo yokwembiwa kwangempela, umphumo wokusetyenziswa kwe-sodium carboxymethyl cellulose iyamangalisa. Umzekelo, kwiprojekthi yokugrumba enzulu, inkqubo yolwelo lokomba oluqulathe i-CMC-Na yasetyenziswa ukulawula ngokufanelekileyo uzinzo kunye nelahleko yokuhluzwa komthombo, ukwandisa isantya sokomba, nokunciphisa iindleko zokomba. Ukongeza, i-CMC-Na isetyenziswa kakhulu ekugrunjweni elwandle, kwaye ukumelana kwayo netyuwa elungileyo kuyenza isebenze kakuhle kwindawo yaselwandle.

Ukusetyenziswa kwe-sodium carboxymethyl cellulose kulwelo lokomba ikakhulu kubandakanya imiba emine: ukuqina, ukunciphisa ukulahleka kwamanzi, ukuthambisa kunye nokuzinzisa. Iimpawu zayo ezikhethekileyo zomzimba kunye neekhemikhali ziyenza ibe yinxalenye eyimfuneko kwinkqubo yolwelo lokomba. Ngophuhliso oluqhubekayo lwetekhnoloji yokugaya, amathuba okusetyenziswa kwe-sodium carboxymethyl cellulose aya kuba banzi. Kuphando lwexesha elizayo, ulwakhiwo lwemolekyuli kunye neendlela zohlengahlengiso lwe-CMC-Na zinokuphuculwa ngakumbi ukuze ziphucule ngakumbi ukusebenza kwazo kwaye zihlangabezane neemfuno zeendawo zokomba ezintsonkothileyo.