[1]周云健,李清平,刘书杰.考虑气液置换的压回法气井压井过程对井底压力的影响*[J].中国安全生产科学技术,2021,17(3):103-109.[doi:10.11731/j.issn.1673-193x.2021.03.016]
ZHOU Yunjian,LI Qingping,LIU Shujie.Influence on bottom hole pressure during killing process of gas wells using bullheading method considering gas-liquid replacement[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2021,17(3):103-109.[doi:10.11731/j.issn.1673-193x.2021.03.016]
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考虑气液置换的压回法气井压井过程对井底压力的影响*
ZHOU Yunjian,LI Qingping,LIU Shujie.Influence on bottom hole pressure during killing process of gas wells using bullheading method considering gas-liquid replacement[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2021,17(3):103-109.[doi:10.11731/j.issn.1673-193x.2021.03.016]
《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]
- 卷:
- 17
- 期数:
- 2021年3期
- 页码:
- 103-109
- 栏目:
- 职业安全卫生管理与技术
- 出版日期:
- 2021-03-31
文章信息/Info
- Title:
- Influence on bottom hole pressure during killing process of gas wells using bullheading method considering gas-liquid replacement
- 文章编号:
- 1673-193X(2021)-03-0103-07
- Keywords:
- bullheading method for well killing; gas-liquid replacement; flow law; change of bottom hole pressure
- 分类号:
- X937
- 文献标志码:
- A
- 摘要:
- 为在压回法气井压井计算中进一步贴合现场实际情况，提出新的压回法气井压井过程计算方法。在压井过程中，考虑压井液与侵入井筒的气体发生置换，导致井筒流体自上而下分布为液－气液２相－气－气液２相的实际问题，建立压井过程模型，并对井底压力的变化进行计算分析。结果表明：发生气液置换对压回法压井过程井底压力以及注入压力具有明显影响，考虑气液置换对井底压力的控制可更加精确，同时，气液置换越多，压回过程所需要的注入压力越大，易引起更加严重事故。因此，气液置换过程在压回法压井过程不可忽略。
- Abstract:
- In order to be more in line with the field actual conditions during the killing calculation of gas wells by using the bullheading method, a new method for calculating the killing process of gas wells by using the bullheading method was proposed. During killing, the gas-liquid replacement process between the gas from the reservoir and the kill fluid was taken into account, which made the wellbore fluid distribution from top to bottom was liquid, gas-liquid two phase, gas and gas-liquid two phase. A model of killing process was established correspondingly. The results show that the gas-liquid replacement had significant influence on the bottom hole pressure and injection pressure during the killing process by using the bullheading method, which made the bottom hole pressure be controlled more accurately. At the same time, the more the gas-liquid replacement, the greater the injection pressure required for the bullheading process, which may lead to the greater accident. Therefore, the gas-liquid replacement process cannot be ignored in the well killing process by using the bullheading method.
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备注/Memo
- 备注/Memo:
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收稿日期： 2021-01-08
* 基金项目： 中国博士后科学基金项目（2020M680835）；国家重点研发计划项目（2018YFC0310205）
作者简介： 周云健，博士，工程师，主要研究方向为水合物开采。
