Abstract: Taking plays as evaluation units, this paper statistically analyzed the data of proven reserves, workload of seismic and drilling and exploration benefits of the whole Junggar Basin and four exploration plays from 2001 to 2010 (from the "10th Five-Year Plan" period to the "11th Five-Year Plan" period) in Xinjiang Oilfield, then made analysis and discussion on its trends and variations. On the basis of the above analysis and combining with the exploration status in Junggar Basin, this paper indicated that the overall exploration investment benefit of Xinjiang Oilfield was dropping; the decrease of large-scale reserves was the main factor influencing the exploration investment benefit; the increase of reserves in northwestern margin of Junggar Basin, the hinterland of Junggar Basin and the eastern Junggar Basin was an ebb-and-flow cycle; a new pattern might be found in reserves increase in Xinjiang Oilfield during the late stage of the "12th Five-Year Plan" period; the steady-state growth of exploration investment was the predominant guarantee to the sustainable growth of reserves.

Key words: proven reserves, exploration investment, Xinjiang Oilfield, seismic, drilling, workload

摘要： 文章以区带为评价单元,统计分析了新疆油田2001-2010年("十五"至"十一五"期间)全盆地及4个勘探区带石油探明储量、地震、钻井工作量和勘探效益的数据,对其变化趋势和规律进行了分析和探讨。在此基础上,结合准噶尔盆地勘探现状,提出:新疆油田勘探投资效益整体呈下降趋势;勘探投资效益下降的主要因素是规模储量的降低;西北缘与腹部、准东储量增长呈相互消长关系;"十二五"之后储量增长趋势可能会出现新的格局;勘探投资的稳步增长是储量持续增长的重要保障。

关键词: 探明储量, 勘探投资效益, 新疆油田, 地震, 钻井, 工作量