论文部分内容阅读
注入蒸汽是稠油开采的主要技术手段,为了减少蒸汽的散热损失,对注气管道进行保温处理,目前普遍存在保温材质选用不当、保温结构不合理等问题。基于现场保温效果测试和筛选优化,确定保温结构采用双层复合硅酸盐+强化高温塑料管壳,保温层厚度取100mm,同时对阀门、卡箍、管托进行保温处理。实施改造措施后,注汽管道的热损失降至150W/m2以下,千米损失率在3%以内,热损失控制在国家标准规定的范围之内,减少了稠油开采中的注汽损耗。
Injecting steam is the main technical means of heavy oil exploitation. In order to reduce the heat loss of steam, the gas injection pipe is heat-insulated, and the problems of inappropriate selection of heat-insulating material and unreasonable heat-insulating structure are common at present. Based on the field insulation effect test and screening optimization, it is determined that the double-layer composite silicate + reinforced high-temperature plastic shell is adopted for the thermal insulation structure, the thickness of the thermal insulation layer is taken as 100mm, and the valves, clamps and pipe supports are heat-insulated at the same time. After the implementation of the reform measures, the heat loss of the steam injection pipelines will drop below 150W / m2, the loss rate of km below 3% and the heat loss control within the scope of the national standard, reducing the steam injection loss in heavy oil production.