Hydroxyethyl cellulose (HEC) ke tlatsetso e tloaelehileng indastering ea ho cheka oli, moo e sebeletsang mesebetsi e fapaneng ea ho cheka mokelikeli. Metsoako ena, eo hape e tsejoang e le ho cheka seretse, e phetha karolo ea bohlokoa ho nolofatseng tšebetso ea ho cheka ka ho pholisa le ho tlotsa karoloana ea ho phunya, ho isa likotoana holimo, le ho fana ka botsitso selibeng. Mona ke kakaretso ea likopo, mesebetsi, le maikutlo a HEC ho cheka oli:

1. Selelekela sa Hydroxyethyl Cellulose (HEC) ka ho Drilling Oli

1.1 Tlhaloso le Mohloli

Hydroxyethyl cellulose ke polymer e fetotsoeng ea cellulose e fumanoang ka ho arabela selulose ka ethylene oxide. Hangata e tsoa ho makhasi a lehong kapa k'hothone 'me e sebetsoa ho etsa motsoako o qhibilihisang metsi, o nang le viscosifying.

1.2 Moemeli oa Viscosifying ho Mekelikeli ea ho Cheka

HEC e sebelisoa ho cheka maro ho fetola le ho laola viscosity ea bona. Sena se bohlokoa bakeng sa ho boloka khatello ea hydraulic e hlokahalang selibeng le ho netefatsa hore li-cuttings li tsamaisoa hantle holimo.

2. Mesebetsi ea Hydroxyethyl Cellulose ka Mekelikeli ea ho Cheka Oli

2.1 Taolo ea Viscosity

HEC e sebetsa e le rheology modifier, e fana ka taolo holim'a viscosity ea mokelikeli oa ho cheka. Bokhoni ba ho fetola viscosity bo bohlokoa bakeng sa ho ntlafatsa thepa ea phallo ea mokelikeli tlas'a maemo a fapaneng a ho cheka.

2.2 Cuttings Ho emisoa

Ts'ebetsong ea ho cheka, ho etsoa li-cuttings tsa majoe, 'me ho bohlokoa ho emisa li-cuttings tsena ka har'a mokelikeli oa ho cheka ho etsa hore li tlosoe selibeng. HEC e thusa ho boloka ho emisoa ho tsitsitseng ha li-cuttings.

2.3 Ho hloekisa Likoti

Ho hloekisa masoba ka katleho ho bohlokoa molemong oa ho cheka. HEC e kenya letsoho ho matla a mokelikeli a ho jara le ho tsamaisa li-cuttings holimo, ho thibela ho bokellana ka har'a seliba le ho khothalletsa ts'ebetso e sebetsang ea ho cheka.

2.4 Botsitso ba Mocheso

HEC e bonts'a botsitso bo botle ba mocheso, e leng se etsang hore e loketse ho sebelisoa ha ho cheka maro a ka 'nang a kopana le mefuta e mengata ea mocheso nakong ea ho cheka.

3. Likopo ho Mekelikeli ea ho Cheka Oli

3.1 Mekelikeli ea Metsi a Chesang

HEC e atisa ho sebelisoa ka metsi a ho cheka a thehiloeng metsing, ho fana ka taolo ea viscosity, ho emisoa ha li-cuttings, le botsitso. E matlafatsa ts'ebetso ea kakaretso ea seretse se thehiloeng metsing libakeng tse fapaneng tsa ho cheka.

3.2 Thibelo ea Shale

HEC e ka kenya letsoho ho thibela shale ka ho etsa mokoallo o sireletsang marako a seliba. Sena se thusa ho thibela ho ruruha le ho arohana ha libopeho tsa shale, ho boloka botsitso ba wellbore.

3.3 Taolo ea Phallo e Lahlehileng

Mesebetsing ea ho cheka moo ho lahleheloa ke mokelikeli ho thehoa ho amehang, HEC e ka kenyelletsoa ho etsoa ho thusa ho laola ho potoloha ho lahlehileng, ho etsa bonnete ba hore mokelikeli oa ho phunya o lula ka har'a seliba.

4. Mehato le Litlhokomelo

4.1 Ho tsepamisa maikutlo

Khatello ea HEC ka maro a ho cheka a hloka ho laoloa ka hloko ho fihlela thepa ea rheological e lakatsehang ntle le ho baka ho tenya ho feteletseng kapa ho ama hampe litšobotsi tse ling tsa mokelikeli.

4.2 Ho lumellana

Ho tsamaellana le li-additives le likarolo tse ling tsa mokelikeli ho bohlokoa. Ho lokela ho nahanoa ka hloko ho sebopeho sohle ho thibela litaba tse kang flocculation kapa katleho e fokotsehileng.

4.3 Taolo ea ho Sefa Mokelikeli

Le hoja HEC e ka kenya letsoho ho laola tahlehelo ea mokelikeli, li-additives tse ling li ka boela tsa hlokahala ho rarolla mathata a itseng a tahlehelo ea mokelikeli le ho boloka taolo ea ho hloekisa.

5. Qetello

Hydroxyethyl cellulose e bapala karolo ea bohlokoa ts'ebetsong ea ho cheka oli ka ho kenya letsoho katlehong le botsitso ba maro a ho cheka. Joaloka moemeli oa viscosifying, e thusa ho laola thepa ea mokelikeli, ho emisa li-cuttings, le ho boloka botsitso ba hantle. Baetsi ba lihlahisoa ba hloka ho nahanisisa ka hloko, ho lumellana, le ho etsoa ka kakaretso ho netefatsa hore HEC e eketsa melemo ea eona lits'ebetsong tsa ho cheka oli.