火驱开发油井出砂状况分析与治理

Analysis and Treatment of Sand Production in Fire Flooding Oil Well

曙光油田火驱开发始于2005年,历经先导试验、外扩试验、规模试验等阶段,目前已实施105个井组,年产油规模达到24.1×10~4 t。随着油井见效程度的不断提高以及日排尾气量的明显增加,油井出砂问题日益严重。2016年杜66块出砂井数达到240口,是转驱前的6.3倍,严重影响火驱开发效果。通过火驱油井出砂与尾气的相关性分析,并立足于不同尾气排量情况下的焖、放、采、下等关键生产节点,逐步摸索出一套适合火驱开发的出砂井管理办法,提高了油井生产时率,保障了火驱开发效果。该研究可为火驱开发油井的出砂治理提供借鉴。

The fire flooding development in Shuguang oilfield started in 2005, and has gone through pilot test, outstep expansion test, scale test, and etc. At present,105 well groups have been implemented, with the annual oil production reaching 24.1×10 4 t. With the increasing effectiveness of oil wells and the obvious increase of daily exhaust emission, the sand production of oil wells is increasingly serious. In 2016, the number of sand wells in block Du 66 reached 240, which was 6.3 times higher than that before flooding conversion, seriously affecting the development effect of fire flooding. Through the correlation analysis of sand production and tail gas in fire flooding oil wells, and based on the key production nodes such as braising, releasing, collecting and lowering under different tail gas discharge conditions, a sand production well management method suitable for fire flooding development is gradually explored, which improves the oil well production time rate and ensures the development of fire flooding. This study can provide reference for sand control of oil wells developed by fire flooding.