Polyanionic cellulose (PAC)
Polyanionic cellulose (PAC) inonyungudika selulosi ether inobuda mumvura inogadzirwa nekemikari shanduko yeyakasikwa cellulose.Iyo yakakosha yemvura-soluble cellulose ether.Inowanzoshandiswa semunyu wayo wesodium uye inoshandiswa zvakanyanya mukuchera mafuta, kunyanya matsime emvura yemunyu uye kuchera mafuta ekumahombekombe.
PAC-Kushandisa MuPetroleum
1. Mabasa ePAC neCMC mumunda wemafuta ndeaya anotevera:
-Madhaka ane PAC neCMC anogona kuita kuti tsime remadziro riite mutete uye rakaomarara sefa keke ine yakaderera permeability uye kuderedza kurasikirwa kwemvura;
- Mushure mekuwedzera PAC neCMC mumatope, chigadziro chekuchera chinogona kuwana simba rekutanga rekugera, kuita kuti matope ave nyore kuburitsa gasi rakaputirwa mariri, uye nekukurumidza kurasa marara mugomba rematope;
- Sezvimwe zvakamiswa kuparadzirwa, kuchera madhaka kune imwe nguva yekurarama, iyo inogona kudzikamiswa nekuwedzerwa nekuwedzera PAC neCMC.
2. PAC neCMC vane kunotevera kwakanakisa kuita muoilfield application:
- Yakakwirira dhigirii yekutsiva, yakanaka kufanana kwekutsiva, yakakwirira viscosity uye yakaderera dosage, zvinobudirira kuvandudza madhaka sevhisi kushanda zvakanaka;
- Yakanaka unyoro kuramba, munyu kuramba uye alkali kuramba, inokodzera mvura yakachena, mvura yegungwa uye yakazara brine mvura-yakavakirwa madhaka;
- Iyo keke yedhaka yakaumbwa ndeyemhando yakanaka uye yakagadzikana, iyo inogona kunyatso kudzikamisa yakapfava ivhu chimiro uye kudzivirira shaft madziro kudonha;
-Iyo inokodzera madhaka masisitimu ane yakaoma akasimba ekugadzirisa zvemukati uye yakafara mutsauko.
3. Maitiro ekushandisa ePAC neCMC mukuchera oiri:
-Iyo ine yakakwira yekurasikirwa kwemvura kudzora kugona, kunyanya inoshanda yekurasikirwa kwemvura inoderedza.Neyero yakaderera, inogona kudzora kurasikirwa kwemvura padanho repamusoro pasina kukanganisa zvimwe zvinhu zvedhaka;
- Iyo ine yakanaka tembiricha kuramba uye yakanakisa munyu kuramba.Inogona kuramba iine yakanaka yekudzikisa kurasikirwa kwemvura uye imwe rheology pasi peimwe munyu.Iyo viscosity inenge isingachinji mushure mekunyungudika mumvura ine munyu.Inonyanya kukodzera kuchera kwemahombekombe uye matsime akadzika;
- Inogona kudzora rheology yematope uye ine yakanaka thixotropy.Inokodzera chero madhaka emvura mumvura yakachena, mvura yegungwa uye saturated brine;
- Pamusoro pezvo, PAC inoshandiswa sesementing fluid kudzivirira fluid kuti isapinda pores uye mafractures;
- Iyo sefa yekutsikisa mvura inogadzirwa nePAC ine kumira kwakanaka kune 2% KCl mhinduro (inofanirwa kuwedzerwa paunenge uchigadzira sefa press fluid), yakanaka solubility, nyore kushandisa, inogona kugadzirirwa panzvimbo, kukurumidza gel kuumba kumhanya uye simba rakasimba kutakura jecha.Kana ichishandiswa mukudzika-permeability dhizaini, yayo mafirita press effect yakanyanya kunaka.
Detail Parameters
| Kuwedzera huwandu (%) | |
| Oiri kugadzira fracturing agent | 0.4-0.6% |
| Drilling treatment agent | 0.2-0.8% |
| Kana iwe uchida kugadzirisa, iwe unogona kupa yakadzama fomula uye maitiro. | |
| Indicators | ||
| PAC-HV | PAC-LV | |
| Color | Upfu hwakachena kana huyero | Hupfu kana zvidimbu zvichena zvichena kana kuti zviyero |
| mvura | 10.0% | 10.0% |
| PH | 6.0-8.5 | 6.0-8.5 |
| Degree rekutsiva | 0.8 | 0.8 |
| sodium chloride | 5% | 2% |
| Kuchena | 90% | 90% |
| Chikamu saizi | 90% inopfuura 250 microns (60 mesh) | 90% inopfuura 250 microns (60 mesh) |
| Viscosity (b) 1% aqueous solution | 3000-6000mPa.s | 10-100mPa.s |
| Kuita kwekushandisa | ||
| Model | 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 |