In order to effectively develop deep reservoirs, the selection of pumps in deep pumping technology is a difficult problem for Tahe oilfield. The optimization of deep pump should avoid the problems of large oil bar load, low pump efficiency, short pump detection period and high difficulty of deep well pumping, etc. By investigating the field application of the pump, the characteristics and parameters of the oil recovery work of five common deep pumpes were analyzed and compared. As a result, the deep pumping with side⁃flow loading pumps has the advantage of reducing the load on the sucker rod string. The actual pump depth of deep pumping with bi⁃lamellar pump is the largest. Deep pumping with self⁃compensating pump can reduce pump leakage, prevent sand sticking and prolong the life of deep pump.The oil pump of hydraulic feedback can solve effectively the problem of downward of rod string.The electric submersible pump and rod pump combination can significantly improve pump efficiency. The article provides some reference to the selection of mechanical production mode for other deep wells or the wells with insufficient fluid supply at the bottom of the wells.

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.