Polyanionic cellulose (PAC)
Polyanionic cellulose (PAC) bụ ether cellulose ether nke nwere ike ime mmiri nke a kwadebere site na mgbanwe kemịkalụ nke cellulose eke.Ọ bụ ihe dị mkpa ether cellulose soluble mmiri.A na-ejikarị ya eme ihe dị ka nnu sodium ya, a na-ejikwa ya na-egwupụta mmanụ, karịsịa olulu mmiri nnu na igwu mmanụ n'ụsọ oké osimiri.
PAC-Ngwa na mmanụ ala
1. Ọrụ nke PAC na CMC na mmanụ mmanụ bụ ndị a:
- Apịtị nwere PAC na CMC nwere ike ime ka mgbidi nke ọma na-eme ka achicha dị nro na nke siri ike na-eme ka ọ dị ala ma belata mmiri ozuzo;
- Mgbe agbakwunyere PAC na CMC n'ime apịtị ahụ, onye na-egwupụta ihe nwere ike nweta ike mbido mbụ dị ala, mee ka apịtị dị mfe ịhapụ gas a na-etinye n'ime ya, ma tụfuo ngwa ngwa n'ime olulu apịtị;
- Dị ka ndị ọzọ kwụsịtụrụ mgbasa, mkpọpu apịtị nwere a ụfọdụ adị oge, nke nwere ike kwụsie ike na ịgbatị site na-agbakwụnye PAC na CMC.
2. PAC na CMC nwere ndị a magburu onwe arụmọrụ na oilfield ngwa:
- ogo dị elu nke nnọchi, ezigbo edo edo edo edo, viscosity dị elu na obere usoro onunu ogwu, na-emeziwanye arụmọrụ apịtị nke ọma;
- Ezigbo nguzogide mmiri, nguzogide nnu na nguzogide alkali, dabara maka mmiri ọhụrụ, mmiri mmiri na apịtị mmiri brine jupụtara;
- Achịcha apịtị akpụpụtara dị mma ma kwụsie ike, nke nwere ike mee ka usoro ala dị nro guzosie ike nke ọma ma gbochie mgbidi ogwe osisi;
- Ọ dabara maka sistemụ apịtị nwere njikwa ọdịnaya siri ike yana oke mgbanwe dị iche iche.
3. Ngwa njirimara nke PAC na CMC na mkpọpu mmanụ:
- Ọ nwere ikike nchịkwa mmiri dị elu, karịsịa ihe na-ebelata mmiri mmiri na-arụ ọrụ nke ọma.Na obere usoro onunu ogwu, ọ nwere ike ịchịkwa mmiri na-efunahụ na ọkwa dị elu na-enweghị emetụta ihe ndị ọzọ nke apịtị;
- Ọ nwere ezigbo nguzogide okpomọkụ yana nguzogide nnu dị mma.Ọ ka nwere ike inwe ezigbo ike mbelata mmiri na-efu na ụfọdụ rheology n'okpuru ụfọdụ ntinye nnu.The viscosity fọrọ nke nta ka agbanweghị mgbe igbari na mmiri nnu.Ọ kachasị mma maka igwu mmiri na olulu mmiri miri emi;
- Ọ nwere ike ịchịkwa rheology nke apịtị ma nwee ezigbo thixotropy.Ọ dị mma maka apịtị mmiri ọ bụla na mmiri ọhụrụ, mmiri mmiri na brine jupụtara;
- Tụkwasị na nke ahụ, a na-eji PAC dị ka mmiri simenti iji gbochie mmiri ịbanye na pores na mgbaji;
- Igwe mmiri nzacha a kwadebere na PAC nwere ezigbo nguzogide 2% KCl (ọ ga-agbakwunye ya mgbe ị na-akwadebe mmiri mmiri nzacha), ezigbo solubility, iji dị mma, enwere ike ịkwadebe ya na saịtị, ngwa ngwa gel na-akpụ ọsọ na ájá siri ike na-ebu ikike.Mgbe a na-eji ya eme ihe n'ụdị permeability dị ala, nsonaazụ nzacha ya dị mma karịa.
Nkọwa nkọwa
| Ọnụ ego mgbakwunye (%) | |
| Ihe na-emebi mmanụ na-emepụta mmanụ | 0.4-0.6% |
| Onye na-ahụ maka ọgwụgwọ ogbunigwe | 0.2-0.8% |
| Ọ bụrụ na ịchọrọ ịhazi ya, ị nwere ike ịnye usoro na usoro zuru ezu. | |
| Ihe ngosi | ||
| PAC-HV | PAC-LV | |
| Agba | Ntụ ntụ ọcha ma ọ bụ ọkụ | White ma ọ bụ ìhè odo ntụ ntụ ma ọ bụ ahụ |
| mmiri ọdịnaya | 10.0% | 10.0% |
| PH | 6.0-8.5 | 6.0-8.5 |
| Ogo nke nnọchi | 0.8 | 0.8 |
| sodium chloride | 5% | 2% |
| Ịdị ọcha | 90% | 90% |
| Nha urughuru | 90% gafere 250 microns (ntupu 60) | 90% gafere 250 microns (ntupu 60) |
| Viscosity (b) 1% ngwọta mmiri | 3000-6000mPa.s | 10-100mPa.s |
| Ịrụ ọrụ ngwa | ||
| Nlereanya | Index | |
| AV | FL | |
| PAC-ULV | ≤10 | ≤16 |
| PAC -LV1 | ≤30 | ≤16 |
| PAC - LV2 | ≤30 | ≤13 |
| PAC - LV3 | ≤30 | ≤13 |
| PAC - LV4 | ≤30 | ≤13 |
| PAC -HV1 | ≥50 | ≤23 |
| PAC -HV2 | ≥50 | ≤23 |
| PAC -HV3 | ≥55 | ≤20 |
| PAC -HV4 | ≥60 | ≤20 |
| PAC - UHV1 | ≥65 | ≤18 |
| PAC - UHV2 | ≥70 | ≤16 |
| PAC - UHV3 | ≥75 | ≤16 |