2017-8-21 8:38:33
Enmax Technology (Shanghai) Company Ltd., Shanghai, China
EnmaxOnline >> Cases Studies & Reports >> Case Histories >> CNPC Daqing No. 1 Production Company/Scale/Surface CPRS
CNPC Daqing No. 1 Production Company/Scale/Surface CPRS

Daqing Scale Prevention

  • Daqing Oilfield, located in northern part of the country, the largest oilfield in CNPC and China
  • Stimulations, as water flooding, polymer flooding, etc., result in heavy scale problems
  • Many CPRS installations done in Daqing during previous years
  • This installation was done on Transfer station #201 in Daqing #1 Production Company, the largest production company in Daqing
  • A six month test was done on Enmax CPRS surface units for polymer fluid scale prevention and removal evaluation
  • The scale thickness in the heaters was about 20 mm
  • Four surface units were installed at the inlets of four heaters
  • Chemicals was stopped after the installation
  • The system was inspected scale status after 3 months, and 6 months, and the tubes of No. 2 heater were pulled out for inspection.

Daqing Scale Prevention

Daqing Scale Prevention

  • Before the installation,the scale thickness at the outlet was 25mm hard scale,it was reduced to 0.8 mm 3months after,and reduced to 0.4 mm 6months after.
  • Before the installation,the scale thickness at the inlet was 4mm,there was no more scale 3 and 6 months after.

Daqing Scale Prevention