清防蜡菌种的评价及现场试验

EVALUATION AND FIELD EXPERIMENT ON BACTERIA TO REMOVE AND CONTROL PARAFFIN

王静 高光军 徐德福 张君 苏俊杰 汪卫东

Wang Jing Gao Guangjun Xu Defu Zhang Jun Su Junjie Wang Weidong

胜利油田有限公司采油工艺研究院, 山东 东营 257000 胜利油田有限公司滨南采油厂, 山东 东营 257000

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。

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.

10.3969/j.issn.1000-7393.2006.01.014