SELECTION AND RESERVOIR ADAPTABILITY ANALYSIS OF A HIGH AEROBIC OIL-DISPLACEMENT BACTERIA

Most reservoir temperature of shengli oil filed is between 60 to 800℃,but the normal aerobic microbe growth adapt in 30 to 600℃.In view of limit of temperature on microbe growth,separated and purified one of aerobic bacteria ZJ-3 from produced fluid of a hot hole,the experiment of growth temperature,salinity-resisting,Acid-alkali-resisting and metabolite shows,ZJ-3 adapt to growth in 700℃ circumstance,and the maximum temperature can reached to 800℃,and it can survive at 1200℃ and exterminate bacterium for 30 minutes. The surface acting agent metabolized by JZ-3 can resist 5 salinity solute,it is adequate to normal reservoir and growth with carbon of oil,and the oxygen has great effect on metabolize of bacteria.Physical experiment shows,ZJ-3 can enhance oil recovery to 12,and has favorable utilization foreground.