7[1]Hussain Aand Rochford D. B. Enhancing Produced Water Quality in Kuwait Oil Company. SPE paper 38797, presented at the 1997 SPE Annual Technical Conference, San Antonio Texas, USA(5~ 8 October 1997)
8[2]Garbutt C. F. Innovative Treating Processes Allow Steamflooding With Poor Quality Oilfield Water. SPE paper 38799, presented at the 1997 SPE Annual Technical Conference, San Antonio Texas, USA(5~8 October 1997)
9[3]Madian E. S et al.. Treating of Produced Water for Surface Discharge at the Arun Gas Condensate Fieled. SPE paper 28946, presented at the SPE International Symposium on Oilfield Chemistry, San Antonio Texas, USA( 14 ~ 17)February 1995 )
10[4]Hjelmas T. A et al.. Produced Water Reinjection: Experiences From Performance Measurements on Ula in the north Sea. Presented at the international conference on Health, Safety & Environment, New Orleans Louisiana, USA (9~12)June 1996)