Abstract: Ignition is the key technology of in⁃situ combustion, which is related to the smooth start of in⁃situ combustion. Because the structure of artificial ignition device was complex, there are some risks of pressure fluctuation and casing damage during operation. Based on the working principle of the traditional igniter, a discardable ignition device for oil reservoir is proposed. The basic structure, installation method and construction process of the igniter are designed. The ignition device provides the necessary heat to start in⁃situ combustion by the solid fuel combustion. It is droppable and no need to recover after complete combustion. The device can avoid construction risk while satisfying the requirements of the ignition. A calculation results of the example shows that the device is feasible and can improve the ignition success rate effectively.

Key words: In?situ combustion, Artificial ignition, Ignition device, Droppable, Ignition

摘要： 　点火是火烧油层的关键技术，关系到火烧油层能否顺利启动。人工点火设备结构复杂，作业时存在压力波动和套管损坏的风险。基于传统点火器的工作原理，提出一种可丢弃的火烧油层点火装置，设计了点火器的基本结构、安装方法和施工流程。该点火装置通过固体燃料燃烧提供火烧油层启动所需热量，燃烧完成后可自行丢弃，不需要对点火器回收，在满足点火需求的基础上，避免了施工风险。实例计算结果表明，该装置可行性较强，能有效提高点火成功率。

关键词: 火烧油层, 人工点火, 点火装置, 可丢弃, 点火