Based on the production decline patterns from Daqing placanticline oilfields,it is indicated that by the end of stable production period of an oilfield,its production decline will take place in terms of hyperbolic style with n=0.5.
研究大庆长垣各油田的产量递减规律证实,油田稳产期结束后,产量将以n=0.5的双曲线规律递减。
参考来源 - 油田产量递减规律与储采比合理界限的确定·2,447,543篇论文数据，部分数据来源于NoteExpress
But from the production history of the individual well in the block, most of the Wells have such problems as short stable production period and quick production decline.
但从该区块单井的生产历史来看，大部分井存在稳产时间短、递减快的问题。
Steam drive pilot test in Block Qi40 has achieved ideal development result, but the sweep efficiency is low and stable production period is short because of reservoir heterogeneity.
齐40块蒸汽驱先导试验取得了较为理想的开发效果，但由于受油藏非均质性的影响，蒸汽驱过程中出现了蒸汽波及效率低、稳产时间短等现象。
The new process still had distinguished features of low consumption, higher output, stable quality and short production period.
此方法具有能耗低，产量高，质量稳定，生产周期短等优点。
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