清防蜡菌种的评价及现场试验

微生物清防蜡菌种的筛选及评价是微生物清防蜡技术的关键。针对筛选到的2株具有特殊性能的菌种N5和BS-6进行了清防蜡性能评价,通过考察温度、矿化度、氧气等因素对其产表面活性剂性能的影响,确定了生长温度37℃、矿化度5000 mg/L、氧气充足的条件下培养,N5和BS-6产表面活性剂的能力最强,代谢最旺盛;同时在室内进行了与原油作用和蜡分散等评价试验,试验表明,这2株菌均具有清防蜡性能,防蜡率分别为78%和77%。将N5和BS-6细菌应用于辛14块6口高蜡井,取得了较好的防蜡效果,热洗周期从30 d延长到180 d,年增油1499 t。N5和BS-6具有较好的清防蜡性能,可代替化学清防蜡剂,安全环保,应用前景广阔。

EVALUATION AND FIELD EXPERIMENT ON BACTERIA TO REMOVE AND CONTROL PARAFFIN

In view of 2 stem of selected bacteria N5 and BS-6,evaluated its capability on remove and control of paraffin,studied the affection of temperature,salinity,oxygen on its surface active agent,and showed that the most optimum cultivate condition for N5 and BS-6 is 37℃,5000 mg/L of salinity and sufficient oxygen,at the same time,test its disperse capacity with oil and paraffin,it shows that N5 and BS-6 have 78% and 77% capacity to control paraffin,and used them to 6 wells of high paraffin in 14 block,obtained favorite effectiveness,purge period prolonged from 30 days to 180 days,and increased 1499 tons of oil.N5 and BS-6 have favorable paraffin control capacity,and they can instead of chemical paraffin inhibitor.