Ukusetyenziswa kwe-polyanionic cellulose ekubholeni ioyile

I-Polyanionic cellulose (PAC) yi-polymer enyibilikayo emanzini esetyenziswa kakhulu kwishishini le-petroleum njenge-dryl fluid additive. Yi-polyanionic derivative ye-cellulose, eyenziwe ngokuguqulwa kweekhemikhali kwe-cellulose nge-carboxymethyl. I-PAC ineempawu ezintle ezifana nokunyibilika kwamanzi amaninzi, ukuzinza kobushushu, kunye nokumelana ne-hydrolysis. Ezi mpawu zenza i-PAC ibe sisongezelelo esifanelekileyo kwiinkqubo zolwelo lokomba ekuphononongeni nasekuveliseni i-petroleum.

Ukusetyenziswa kwe-PAC ekubholeni ioyile kungenxa yokukwazi kwayo ukulawula i-viscosity kunye neempawu zokuhluza ze-drilling fluids. Ulawulo lwe-viscosity luyinto ebalulekileyo kwimisebenzi yokubhola njengoko luchaphazela ukusebenza kakuhle kunye nokhuseleko lokubhola. Ukusetyenziswa kwe-PAC kunceda ukuzinzisa i-viscosity ye-drilling fluid, ebaluleke kakhulu ekugcineni iipropati zokuhamba kwe-drilling fluid. I-viscosity ye-drilling fluid ilawulwa yi-concentration ye-PAC esetyenzisiweyo kunye nobunzima be-molecular ye-polymer. I-molecule ye-PAC isebenza njenge-thickener, okanye i-viscosifier, kuba yonyusa i-viscosifier ye-drilling fluid. I-viscosity ye-drilling fluid ixhomekeke kwi-concentration ye-PAC, i-degree of replacement kunye nobunzima be-molecular.

Ulawulo lokuhluza yenye into ebalulekileyo kwimisebenzi yokugrumba. Ukusebenza kokuhluza kunxulumene nesantya apho ulwelo lungena eludongeni lomngxuma ngexesha lokugrumba. Ukusebenzisa i-PAC kunceda ukuphucula ulawulo lokuhluza kunye nokunciphisa ukungena kolwelo. Ukungena kolwelo kunokukhokelela ekulahlekelweni kokujikeleza kwegazi, umonakalo wokwakheka kunye nokusebenza okunciphileyo kokugrumba. Ukongeza i-PAC kulwelo lokugrumba kudala isakhiwo esifana nejeli esisebenza njengekhekhe lesihluzo eludongeni lomngxuma. Le khekhe yesihluzo inciphisa ukungena kolwelo, inceda ukugcina ukuthembeka komngxuma womngxuma kunye nokunciphisa umngcipheko wokonakala kokwakheka.

I-PAC ikwasetyenziselwa ukuphucula iipropati zokucinezela i-shale yolwelo lokugrumba. Ukucinezela i-shale kukukwazi kolwelo lokugrumba ukuthintela i-shale esabelayo ekubeni ingabi namanzi kwaye idumbe. Ukufuma kunye nokwanda kwe-shale esabelayo kunokukhokelela kwiingxaki ezinje ngokungazinzi kwe-wellbore, ukunamathela kwipayipi, kunye nokulahleka kokujikeleza kwegazi. Ukongeza i-PAC kulwelo lokugrumba kudala umqobo phakathi kwe-shale kunye nolwelo lokugrumba. Olu mqobo lunceda ukugcina ukuthembeka kodonga lomthombo ngokunciphisa ukufuma kunye nokudumba kwe-shale.

Enye indlela yokusebenzisa i-PAC ekubholeni ioyile kukunciphisa ukulahleka kwamanzi. Ukulahleka kokuhluza kubhekisa ekulahlekelweni kolwelo lokubhoboza olungena kwindawo ebumbekayo ngexesha lokubhoboza. Oku kulahleka kunokukhokelela ekonakaleni kokwakheka, ukulahleka kokujikeleza kwegazi kunye nokuncipha kokusebenza kakuhle kokubhoboza. Ukusetyenziswa kwe-PAC kunceda ekunciphiseni ukulahleka kolwelo ngokwenza ikhekhe lesihluzo kwiindonga zequla elithintela ukuhamba kolwelo ukuya kwindawo ebumbekayo. Ukuncipha kokulahleka kolwelo kunceda ukugcina ukuthembeka kwe-wellbore kunye nokuphucula ukusebenza kakuhle kokubhoboza.

I-PAC ingasetyenziselwa ukuphucula uzinzo lwe-wellbore lwamanzi okumba. Uzinzo lwe-Wellbore lubhekisa kubuchule bolwelo lokumba ukugcina uzinzo lwe-wellbore ngexesha lokumba. Ukusetyenziswa kwe-PAC kunceda ukuzinzisa udonga lomthombo ngokwenza ikhekhe lesihluzo eludongeni lomthombo. Le khekhe yesihluzo inciphisa ukungena kolwelo eludongeni kwaye inciphise umngcipheko wokungazinzi kwe-wellbore.

Ukusetyenziswa kwe-polyanionic cellulose ekubholeni ioyile kunika iingenelo ezininzi. I-PAC isetyenziselwa ukulawula ukusebenza kwe-viscosity kunye nokuhluza kolwelo lokubhola, ukuphucula ukusebenza kokuthintela i-shale, ukunciphisa ukulahleka kokuhluza, kunye nokuphucula uzinzo lwe-wellbore. Ukusetyenziswa kwe-PAC ekubholeni ioyile kunceda ukwandisa ukusebenza kakuhle kwaye kunciphisa umngcipheko wokonakala kokwakheka, ukulahleka kokujikeleza kwegazi kunye nokungazinzi kwe-wellbore. Ke ngoko, ukusetyenziswa kwe-PAC kubalulekile kwimpumelelo yokubhola ioyile kunye nemveliso.