The load characteristics of power utilization of single wells in Tazhong Desert Oilfield are multiple sites, extensive area, long distance and light load. Combined with analysis on stability and economy of power supply, and characteristics of oilfield production, it is known that there are four power supply modes could be used in Tazhong desert area:electric power grids, solar photovoltaic sys-tem, diesel engines and combination use of diesel engines and solar photovoltaic. For specific single wells, they classified by load capacity on the basis of power supply stability, investment annual cost of different power supply methods are calculated to compare and choose economically. According to es-timated development life for single wells, the method with least investment annual cost is the best power supply method.%塔中沙漠油田单井用电的负荷特点为点多、面广,距离长,负荷轻.结合供电可靠性、经济性及油田生产特点分析可知,适合在塔中沙漠地区采用的单井供电方式有网电供电、太阳能光伏发电、柴油机发电,柴油光伏互补发电等4种.对具体单井,在保证供电可靠性的基础上,按负荷容量进行分类,计算不同供电方式的投资年值,做经济性比选.根据预估的单井可采年限,投资年值最小的方式即为最可取的供电方式.
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