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低渗气藏入井液损害实验评价的产能指数法

游利军,  陈杨,  康毅力,  闫霄鹏,  王艺钧

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文章导航 > 钻井液与完井液  > 2020 >  37(5): 620-625
游利军, 陈杨, 康毅力, 闫霄鹏, 王艺钧. 低渗气藏入井液损害实验评价的产能指数法[J]. 钻井液与完井液, 2020, 37(5): 620-625. doi: 10.3969/j.issn.1001-5620.2020.05.014
引用本文: 游利军, 陈杨, 康毅力, 闫霄鹏, 王艺钧. 低渗气藏入井液损害实验评价的产能指数法[J]. 钻井液与完井液, 2020, 37(5): 620-625. doi: 10.3969/j.issn.1001-5620.2020.05.014
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YOU Lijun, CHEN Yang, KANG Yili, YAN Xiaopeng, WANG Yijun. Productivity Index Method for Experimental Evaluation of Working Fluid Damage in Low Permeability Gas Reservoir[J]. DRILLING FLUID & COMPLETION FLUID, 2020, 37(5): 620-625. doi: 10.3969/j.issn.1001-5620.2020.05.014
Citation: YOU Lijun, CHEN Yang, KANG Yili, YAN Xiaopeng, WANG Yijun. Productivity Index Method for Experimental Evaluation of Working Fluid Damage in Low Permeability Gas Reservoir[J]. DRILLING FLUID & COMPLETION FLUID, 2020, 37(5): 620-625. doi: 10.3969/j.issn.1001-5620.2020.05.014
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低渗气藏入井液损害实验评价的产能指数法

doi: 10.3969/j.issn.1001-5620.2020.05.014

  • 西南石油大学“油气藏地质及开发工程”国家重点实验室, 成都 610500

基金项目: 

国家自然科学基金项目“富有机质页岩氧化致裂增渗加速气体传输机理研究”（51674209）；非常规油气层保护四川省青年科技创新研究团队项目“水力压裂页岩气井热处理解除损害及强化产能研究”（2016TD0016）

详细信息
    作者简介:

    游利军,1976年生,现任西南石油大学教授、博士生导师,主要从事储层保护、非常规油气、岩石物理等方面的科研与教学工作。E-mail:youlj0379@126.com

  • 中图分类号: TE311

Productivity Index Method for Experimental Evaluation of Working Fluid Damage in Low Permeability Gas Reservoir

  • State Key Laboratory of “Reservoir Geology and Development Engineering”, Southwest Petroleum University, Chengdu, Sichuan 610500

    摘要
  • 摘要: 低渗气藏储层入井液损害影响气井产能，而室内储层损害评价多采用渗透率恢复率作为评价指标。结合生产实际，提出了以产能指数保持率作为评价指标，建立了低渗气藏入井液损害实验评价新方法——产能指数法，利用该方法与行业标准法开展了入井液损害评价实验。结果表明，产能指数法采用压力衰竭式驱替，获取动态实验数据，明确压差和时间对损害程度的影响；模拟储层条件，反映入井液损害前后岩样渗流能力的变化特征；与压力衰减法和行业标准法相结合，为完善入井液损害评价方法体系提供新思路，有助于保护储层工作液体系的优选。

     

    Abstract: Working fluids pumped into a low permeability gas reservoir cause damage to the production capacity of the gas well, and permeability recovery is generally used to evaluate the degree of reservoir damage. Based on field practice, a percent retention of productivity index is presented as an index for evaluating the gas reservoir damage by fluids injected into gas wells. An evaluation method, which is called productivity index method, was established for evaluating the damage caused by fluids injected into low permeability gas reservoirs. It was found that the productivity index method can determine the effects of differential pressure and time on the degree of reservoir damage by acquiring dynamic experimental data using pressure depletion displacement. The productivity index method can simulate the reservoir condition and tell the change of filtration capacity of rock specimen before and after being damaged by the working fluids. This method, in connection with pressure depletion method and industrial standard methods, provides a new clue for improving the evaluation of reservoir damage by working fluids and is helpful in optimizing working fluids for reservoir protection.

     

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  • 收稿日期:  2020-07-25
  • 刊出日期:  2020-10-28

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