Polyanionic Cellulose (PAC) chinhu chinonyungudika nemvura chinobva pakunyungudika chinoshandiswa zvakanyanya mukuchera oiri, kunyanya kugadzirira mvura yekuchera. Yakave yekuwedzera kwakakosha mune yekuchera mvura sisitimu nekuda kwehukuru hwayo hunhu, hwakadai sekusimudzira viscosity, kuderedza kurasikirwa kwemvura, kugadzikana uye kuchengetedza kwezvakatipoteredza.
1. Deredza kurasikirwa kwemvura
Fluid kurasikirwa kutonga ibasa rakakosha mukuchera oiri. Kana iyo yekuchera mvura inobata maumbirwo panguva yekuchera, inogona kukonzera kuumbwa kwekeke rematope uye kupinda mufiltrate mukuumbwa, zvichikonzera kukuvara kwekugadzira uye kukanganisa kudhirowa. PAC inonyatso kudzikisa kurasikirwa kwemvura uye kusefa kupinda mukuumbwa nekugadzira firimu rekudzivirira mumvura yekuchera, nekudaro kuderedza kusvibiswa kwekuumbwa. Ichi chivakwa chinobatsira kuvandudza kugadzikana kwetsime uye kuchengetedza mafuta uye gasi maumbirwo.
Principle
PAC inonyungudika mumvura kuita colloidal solution ine high viscosity. Kana iyo yekuchera mvura inobata maumbirwo, iwo PAC mamorekuru anogona kuumba dense dhaka keke pamusoro pemaumbirwo kudzivirira kupfuurira kupinda kwechikamu chemvura. Iri keke remadhaka rine kushanduka kwakanaka uye kuoma, uye rinogona kutsungirira misiyano mikuru yekumanikidza, nekudaro ichinyatso kudzikisa kurasikirwa kwekusefa.
2. Wedzera viscosity yekuchera mvura
Kukwidziridzwa kweViscosity nderimwe basa rakakosha rePAC mukuchera mvura. Mvura yekuchera inoda kuve neimwe viscosity yekutakura kucheka kumashure, kuitira kuti uve nechokwadi chekuchena kwetsime uye kuchengetedza kudzikama kwekuchera. Sekuwedzeredza viscosity, PAC inogona kuwedzera viscosity yemvura yekuchera, kuwedzera kugona kwemvura yekuchera kutakura kucheka, uye kukurudzira kudzoka uye kubuda kwekucheka.
Principle
PAC mamorekuru anonyungudika mumvura yekuchera kuti igadzire chimiro chepolymer cheni, iyo inowedzera kuramba kwemukati kwemvura. Ichi chimiro chinogona kuwedzera zvakanyanya kuoneka viscosity uye kukosha kwegoho remvura yekuchera, uye kuwedzera kugona kwayo kutakura uye kumisa kucheka. Panguva imwecheteyo, iyo viscosity yekusimudzira maitiro ePAC ichiri kushanda pasi petembiricha yakanyanya uye yakanyanya kudzvanywa mamiriro, uye yakakodzera kuchera matsime akadzika uye yakaoma geological mamiriro.
3. Kuvandudza kugadzikana kwetsime
Wellbore kugadzikana inyaya inoda kutariswa zvakanyanya panguva yekuchera. Mvura yekuchera inofanira kukwanisa kudzikamisa madziro emutsime kudzivirira kuti madziro emutsime asadonha. PAC yakasanganiswa mhedzisiro yekudzikisa kusefa uye kuwedzera viscosity mukuchera mvura inogona kunyatso kusimudzira kugadzikana kwetsime.
Principle
PAC inodzivirira mvura yekuchera kuti isapinda muchimiro nekugadzira dhaka rakasimba rekeke layer pamusoro pemadziro etsime. Panguva imwecheteyo, viscosity yayo inogona kuwedzera kunamatira kwechitubu chemadziro uye kuderedza chizvarwa che microcracks mukuumbwa, nekudaro ichivandudza kugadzikana kwemuchina wetsime. Mukuwedzera, PAC inogonawo kuvandudza thixotropy yemvura yekuchera, kuitira kuti iite simba rakasimba rekutsigira kana yakamira, uye inochengetedza mvura yakakodzera painoyerera, ichiwedzera kudzikamisa rusvingo rwetsime.
4. Kuchengetedza kwezvakatipoteredza maitiro
Nekuvandudzwa kwezvinodiwa zvekuchengetedza kwezvakatipoteredza, makemikari anoshandiswa mukuchera zvinwiwa anofanirwa kuve nekuita kwakanaka kwekuchengetedza kwezvakatipoteredza. PAC chigadzirwa chakagadziridzwa cheyakasikwa cellulose, ine yakanaka biodegradability uye yakaderera muchetura, iyo inosangana nekuchengetedzwa kwezvakatipoteredza zvinodiwa.
Principle
PAC chigadzirwa chakagadziridzwa chemakemikari chinobva pane yakasikwa cellulose, haina zvinhu zvine chepfu, uye inogona kuderedzwa nema microorganisms ari munzvimbo yechisikigo. Kuenzaniswa nemapolymers ekugadzira, PAC haina kukanganisa nharaunda uye inofambirana nezvinodiwa zvekuchera girini. Hunhu uhwu hunoupa mukana wakajeka munzvimbo dzakatipoteredza uye kuchera kunze kwemahombekombe.
5. Tembiricha uye munyu kuramba
Munzvimbo dzepamusoro-tembiricha uye dzine munyu wakawanda, ivhu rechinyakare nemapolima anowanzoomerwa nekuchengetedza kugadzikana kwemvura yekuchera, nepo PAC inoratidza tembiricha yakanaka uye kuramba munyu uye inogona kuchengetedza kushanda kwemvura yekuchera munzvimbo dzakaoma.
Principle
Mapoka eAnionic (akadai semapoka e-carboxyl) anounzwa muchimiro chemolecular yePAC. Aya mapoka anogona kuchinjanisa ions nemunyu munyu munzvimbo ine munyu wepamusoro kuti uchengetedze kugadzikana kwechimiro che molecular. Panguva imwecheteyo, PAC ine kugadzikana kwakanyanya kwekushisa uye haizoitike kuderera kwakanyanya pasi pemamiriro ekushisa kwakanyanya, kuve nechokwadi chekuona uye kusefa kudzora kugona kwemvura yekuchera. Naizvozvo, PAC ine yakanakisa mashandisiro ekushandisa mumvura ine munyu slurries uye yakakwirira-tembiricha matsime.
6. Optimize drilling fluid rheology
Rheology inoreva kuyerera uye deformation maitiro emvura yekuchera pasi pesimba rekugera. PAC inogona kugadzirisa rheology yemvura yekuchera kuti ive nechokwadi chekuti ine dombo rakanaka rekutakura uye inogona kuyerera yakasununguka mutsime panguva yekuchera.
Principle
PAC inodyidzana nezvimwe zvikamu mumvura yekuchera kuti iite yakaoma network chimiro uye kugadzirisa kukosha kwegoho uye shear kutetepa maitiro emvura yekuchera. Izvi zvinogadzirisa zvinoita kuti mvura yekuchera iratidze kunaka kwekutakura dombo uye fluidity panguva yekuchera, kunyanya mumhando dzakaoma uye matsime ekudzvinyirira.
7. Kuongorora nyaya
Mumashandisirwo anoshanda, PAC inoshandiswa zvakanyanya mumhando dzakasiyana dzekuchera mvura masisitimu. Semuenzaniso, muchirongwa chekuchera matsime akadzika, mvura-based drilling fluid ine PAC yakashandiswa. Mhedzisiro yakaratidza kuti PAC yakaderedza zvakanyanya kurasika kwekusefa kwemvura yekuchera, yakasimbisa kugadzikana kwetsime, yakavandudza kuchera, uye kuderedza kuwanda kwetsaona inokonzerwa nekusvibiswa kwekuumbwa. Panguva imwecheteyo, PAC yakashandawo zvakanaka mukuchera mugungwa, uye ichiri kukwanisa kudzora kushanda kwemvura yekuchera pasi pemunyu wakanyanya uye tembiricha yepamusoro kuti ive nechokwadi chekufambira mberi kwakanaka kwekuchera.
Iko kushandiswa kwe polyanionic cellulose mukuchera mafuta kunonyanya kuratidzwa muhunhu hwayo hwakanaka hwekudzikisa kurasikirwa kwekusefa, kuwedzera viscosity, kunatsiridza kugadzikana kwetsime uye kuchengetedza kwezvakatipoteredza. Kushandiswa kwaro mumvura-based uye mafuta-based drilling fluids haingogadziri kushanda zvakanaka kwekuchera uye inoderedza downhole tsaona, asiwo ine hushamwari hwezvakatipoteredza uye inobatsira kuzadzisa chinangwa chekuchera kwakasvibirira. Pasi pemamiriro ezvinhu akaoma e geological uye tembiricha yepamusoro uye yakanyanya kudzvanywa nharaunda, tembiricha yePAC uye kuramba munyu kunowedzera kuratidza kukosha kwayo mukuchera oiri. Naizvozvo, polyanionic cellulose inotora chinzvimbo chakakosha mune yemazuva ano yekuchera mafuta tekinoroji.
Nguva yekutumira: Jun-14-2024