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在稠油热采中如何使注汽系统的热损失减少到最低程度,尽可能地增加注入油层的热量,使用隔热油管是减少注汽热损失的重要配套措施之一。本文利用隔热油管的测试资料和热采数值模拟软件,结合油田的实际情况,经过数值模拟计算和分析,从井筒隔热效果对蒸汽吞吐采油和蒸汽驱采油增产的影响,研究评价使用近期研制的高效隔热油管和隔热油管用吸气剂的经济性。研究结果表明,仅考虑井筒隔热节能,使用高效隔热油管和隔热油管吸气剂所增加投资的回收期是比较长的,且近乎不经济。但把井筒隔热的节能效果和增加注入油层的热量后在不同热采阶段增加的产油量进行综合考虑,则所增加投资的回收期较短,经济上是可行的,而在不同的开采阶段使用不同类型的隔热油管则更为合理。
How to minimize the heat loss of the steam injection system in heavy oil thermal recovery and increase the heat injected into the reservoir as much as possible. The use of thermal insulation tubing is one of the important measures to reduce the heat loss of steam injection. In this paper, the test data of heat-insulated tubing and numerical simulation software for thermal recovery, combined with the actual situation of the oil field, through numerical simulation and analysis, from the impact of wellbore insulation on steam stimulation oil production and steam flooding oil production, research evaluation using the recent development Of the efficient heat insulation tubing and heat pipe with getter economy. The results show that the payback period for increased investment considering wellbore thermal insulation and energy saving, using highly efficient thermal insulation tubing and thermal insulation oil pipe getter is relatively long and nearly uneconomical. However, taking into consideration the energy saving effect of wellbore insulation and increasing oil production in different thermal recovery stages after increasing the heat injected into the oil layer, the payback period of the increased investment is short and economically feasible. However, in different mining Stage using different types of heat pipe is more reasonable.