Drilling Fluid Additives | HEC, CMC, PAC

Drilling kua additives, suav nrog HEC (hydroxyethyl cellulose), CMC (carboxymethyl cellulose), thiab PAC (polyanionic cellulose), yog cov khoom siv tseem ceeb hauv kev lag luam roj thiab roj los txhim kho kev ua haujlwm ntawm cov dej drilling. Ntawm no yog ib qho kev faib tawm ntawm lawv lub luag haujlwm thiab kev ua haujlwm:

1. HEC (Hydroxyethyl Cellulose):
   • Viscosity Control: HEC yog cov dej-soluble polymer uas feem ntau siv los ua viscosity modifier hauv cov kua dej drilling. Nws pab ua kom lub viscosity ntawm cov kua, uas yog ib qho tseem ceeb rau kev nqa thiab ncua kev xyaum txiav, tshwj xeeb tshaj yog nyob rau hauv ntsug los yog deviated qhov dej.
   • Fluid Poob Control: HEC kuj tseem tuaj yeem ua tus neeg saib xyuas cov dej tsis zoo, txo qhov poob ntawm cov kua dej hauv qhov tsim. Qhov no yuav pab kom muaj kev ruaj ntseg zoo thiab tiv thaiv tus nqi tsim kev puas tsuaj.
   • Temperature Stability: HEC muaj qhov kub thiab txias stability, ua rau nws haum rau siv nyob rau hauv high-temperature thiab low-temperature drilling ib puag ncig.
   • Environmentally Friendly: HEC yog biodegradable thiab ib puag ncig tus phooj ywg, ua rau nws yog ib qho kev xaiv zoo rau kev siv hauv cov dej drilling, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig rhiab heev.
2. CMC (Carboxymethyl Cellulose):
   • Viscosity Modifier: CMC yog lwm cov dej-soluble polymer feem ntau siv los ua viscosity modifier hauv cov kua dej drilling. Nws pab txhim kho cov kua dej rheological zog, txhim kho nws lub peev xwm nqa thiab tshem tawm ntawm kev xyaum txiav.
   • Fluid Poob Control: CMC ua haujlwm raws li tus neeg saib xyuas kev poob dej, txo cov dej poob rau hauv kev tsim thiab tswj kev ruaj ntseg zoo thaum lub sijhawm ua haujlwm drilling.
   • Salt Tolerance: CMC pom zoo ntsev kam rau ua, ua rau nws haum rau siv nyob rau hauv drilling kua nyob rau hauv saline formations los yog qhov twg salinity siab.
   • Thermal Stability: CMC muaj thermal stability zoo, tso cai rau nws tswj nws cov kev ua tau zoo txawm nyob rau hauv siab kub ntsib nyob rau hauv sib sib zog nqus drilling ua hauj lwm.
3. PAC (Polyanionic Cellulose):
   • High Viscosity: PAC yog cov khoom hnyav-molecular-polymer uas muab cov viscosity siab rau cov dej drilling. Nws pab txhim kho lub peev xwm nqa ntawm cov kua thiab pab cuam hauv kev ncua ntawm kev xyaum txiav.
   • Fluid Loss Control: PAC yog tus neeg saib xyuas cov dej tsis zoo, txo cov dej poob rau hauv kev tsim thiab tswj kev ruaj ntseg zoo.
   • Temperature Stability: PAC nthuav tawm thermal stability zoo heev, ua rau nws tsim nyog rau siv nyob rau hauv high-temperature drilling ib puag ncig, xws li dej tob los yog geothermal drilling.
   • Kev puas tsuaj tsawg: PAC tsim cov ncuav mog qab zib nyias, impermeable lim ntawm lub ntsej muag tsim, txo qhov kev pheej hmoo ntawm kev tsim kev puas tsuaj thiab txhim kho cov khoom tsim tau zoo.

Cov khoom siv dej drilling no, suav nrog HEC, CMC, thiab PAC, ua lub luag haujlwm tseem ceeb hauv kev txhim kho kev ua haujlwm drilling los ntawm kev tswj cov kua dej, txo qhov tsim kev puas tsuaj, thiab ua kom muaj kev ruaj ntseg zoo. Lawv cov kev xaiv thiab daim ntawv thov nyob ntawm seb qhov tshwj xeeb drilling, xws li cov yam ntxwv tsim, qhov tob tob, qhov kub thiab txias, thiab salinity.