北美页岩气规整化产量递减分析方法应用研究——以长宁-威远示范区为例
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西南油气田分公司,西南油气田分公司,西南油气田分公司,西南油气田分公司,西南油气田分公司

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TE332

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国家重大专项“长宁-威远页岩气开发示范工程”(2016ZX05062002)


An Application of the normalized rate decline analysis method in Changning-Weiyuan Demonstration Area
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Southwest oil&gas field of PetroChina,,,,

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    摘要:

    摘要:页岩气井控压生产时,工作制度变换频繁,产量及压力递减缓慢,常规递减方法难以对其生产动态进行准确预测。针对控压页岩气井生产特征,北美Haynesville提出采用规整化产量同时耦合压力及产量影响,进行页岩气井动态分析。本文基于上述方法,通过地质参数类比、数值模拟计算和矿场实例应用等验证手段,论证了该方法对于长宁-威远示范区气井生产动态分析的可行性,并提出了采用该方法预测长宁-威远示范区页岩气井最终可采储量(EUR)的相应步骤。本文研究成果证实了北美规整化产量递减分析方法应用于国内同类型页岩气田控压限产气井的可行性及优势,对国内同类页岩气田动态分析及生产规律预测具有参考和借鉴价值。

    Abstract:

    Abstract: During the gas extraction, as the effective stress increases, the conductivity of fracture network decrease obviously, which would lead to a sharply decline on the production curve. Shown by the practices of North America, Restricting rate is an effective operation to maintain a long-term productivity. Since the relatively steady production during the restricted period, production decline analysis methods could not be used. Based on the flow dynamic of the restricted rate, Haynesville put forward the normalized rate for dynamic analyses. This paper proves the usefulness of the method for the Changning-Weiyuan Demonstration Area, by means of geological parameter analogy, numerical simulation calculation and field data application. Moreover, procedures of using this method to determine the Estimated Ultimate Recovery (EUR) in Changning-Weiyuan were presented. The analysis example and result can be referenced by the similar shale reservoirs in China.

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张德良,吴建发,张鉴,等. 北美页岩气规整化产量递减分析方法应用研究——以长宁-威远示范区为例[J]. 科学技术与工程, 2018, 18(34): .
ZhangDeliang,,,et al. An Application of the normalized rate decline analysis method in Changning-Weiyuan Demonstration Area[J]. Science Technology and Engineering,2018,18(34).

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  • 收稿日期:2018-05-05
  • 最后修改日期:2018-06-21
  • 录用日期:2018-07-10
  • 在线发布日期: 2018-12-20
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