小洼油田洼38块深层特稠油加密调整实施汽驱先导试验

方法利用数值模拟方法，在小洼油田洼38块目前井网井距加密调整的基础上，对沙河街组沙三层系进行70m小井距开发试验。目的寻找提高采收率，实现稳产的最终开发方式。结果优选出洼38块蒸汽吞吐到地层压力为5．0MPa左右时，转入蒸汽驱方式开发，可提高经济效益。结论全面实施70m小井距开发试验，有利于实现开发方式的顺利转换，同时利用铁板效应，可提高蒸汽的热利用率。

Steam flooding pilot testing for infill adjustment of deep buried super viscous crude oil of Wa-38 block, Xiaowa oil field

Method Development experiment of well spacing of 70 m of the third layer series ofShahejie formation (E,s,) is carried out applying numelical simulation method based upon theinfill adjustment of Wa-38 block of Xiaowa oil field. Purpose To look for ultimate development method for EOR and stable production. Result One scheme is optimized that whenthe formation pressure is about 5. 0 MPa by steam soaking it can be converted to steam flooding and the economic benefit can be raised. Conclusion Full scale deployment of development experiment of 70m well spacing is favorable for the successful conversion of the development methods. The heat utilization rate of steam can be improved applying iron plate effect.