储气库含硫注采井井口失效硫化氢伤害距离计算
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摘要
以某储气库含硫注采井井下安全阀及井口主阀失效井喷为例,选用直观、物理量间关系容易推演高斯正态扩散模型,对不同注采时期和不同气象条件下硫化氢扩散伤害距离进行数值计算。结果表明,储气库含硫注采井发生井喷后,正常注采周期的不同注采阶段下风速是硫化氢扩散的主控因素;下风向和横风向伤害距离差异大,在相同气象条件下,风速越大(大气越不稳定)伤害距离越小,风速增大伤害距离与风速敏感度降低。
Based on the blowout of a gas storage natural gas well involving hydrogen sulfide,which is caused by the failure of the down-hole safety valve and the well head master valve.Choosing the Gaussian normal diffusion model to calculate the hydrogen sulfide damage distance under different periods and different weather conditions.The results show that thewind speed are the main controlling factor of hydrogen sulfide diffusion.There is a big difference between leeward distance and crosswind distance.In the same meteorological conditions,the greater the wind speed(the more unstable the atmosphere)the smaller the damage distance,the wind speed increases,the damage distance and the wind speed sensitivity decreases.
Based on the blowout of a gas storage natural gas well involving hydrogen sulfide,which is caused by the failure of the down-hole safety valve and the well head master valve.Choosing the Gaussian normal diffusion model to calculate the hydrogen sulfide damage distance under different periods and different weather conditions.The results show that thewind speed are the main controlling factor of hydrogen sulfide diffusion.There is a big difference between leeward distance and crosswind distance.In the same meteorological conditions,the greater the wind speed(the more unstable the atmosphere)the smaller the damage distance,the wind speed increases,the damage distance and the wind speed sensitivity decreases.
引文
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[2]张宝柱,樊建春,马庆春.高含硫气井井喷事故模拟与分析[J].石油与天然气化工,2011,40(5):531~542.
[3]胡坤.基于CFD的高含硫天然气井井喷失控射流数值模拟研究[J].科学技术与工程,2013,13(9):2448~2452.
[4]邱奎,庞晓虹,刘定东.高含硫天然气井井喷的扩散范围估计与防范对策[J].石油天然气学报(江汉石油学院学报),2008,30(2):114~118.
[5]吴忠标.大气环境和污染控制基础[M].北京:化学工业出版社,2002.
[6]张维凡,等.重要有毒物质泄漏扩散模型研究[J].化学劳动保护(安全技术与管理分册),1996,96(3):1~19.
[7]含硫化氢天然气井公众危害程度分级方法(AQ 2017-2008),国家安全生产监督管理总局,2008-11-19发布.
[8]周开吉,等.井喷失控井喷流出口速度预测方法研究[J].天然气工业,2006,26(9):71~73.
[9]陈元千.确定气井高速湍流系数的新相关经验公式[J].断块油气田,2012,1(9):29~32.
[10]程勇,等.采用高斯模型分析输气管道泄漏后气体的扩散[J].内蒙古石油化工,2010,14:49~51.
[11]含硫化氢油气井安全钻井推荐作法(SY/T5087-2005),国家发展和改革委员会,2005-03-19发布.