摘要
随着轮南油田地层能量不断衰竭,大部分油井已经进入低压、低产阶段,常规柱塞气举井产量低、携液效率低,且该工艺间歇性开关井制度制定不合理时易导致井筒积液压死油层,造成经济损失。为了解决上述问题,通过室内研究与现场试验,采用多项工艺相结合的方式研发出一套"固定式多级气举阀管柱+浮动式中空快速柱塞+清蜡柱塞"相结合的复合柱塞气举新工艺。该工艺在前期柱塞气举技术的基础上进行了创新,实现了不关井连续生产,避免井筒积液,现场应用4井次共减少清蜡作业次数147次、减少制氮车气举作业LNA井2次、LNB井1次,并且复合柱塞运行增油1 096 t。复合柱塞气举新工艺现场应用效果明显,已逐步在油田进行推广,实现柱塞气举井高效生产。
As the producing energy depletes continuously in Lunnan Oilfield,most oil wells are now at the stage of low pressure and low yield,and conventional plunger lift wells are low in production rate and liquid carrying efficiency.Besides,when the intermittent well startup and shutdown system is not formulated rationally,liquid loading occurs easily to make the oil layers dead,resulting in economic loss.To solve these problems,a new combined plunger lift technology of“fixed multistage gas lift valve string+floating hollow quick plunger+paraffin removal plunger”was developed by combining multiple technologies based on laboratory study and field experiment.This technology is innovatively developed on the basis of earlier plunger lift technology.By virtue of this technology,continuous production without shutting the well is realized and liquid loading is avoided.It is applied practically in four wells times,and paraffin removing operation is reduced by147times,gas lift of nitrogen generation vehicle by twice and incremental oil of1096t by combined plunger operation.This combined plunger lift technology is remarkable in field application,and it is being popularized in the oilfield gradually to realize the efficient production of plunger lift wells.
作者
雷腾蛟
崔小虎
胡登强
王法鑫
周碧辉
董丰硕
LEI Tengjiao;CUI Xiaohu;HU Dengqiang;WANG Faxin;ZHOU Bihui;DONG Fengshuo(Development Department, CNPC Tarim Oilfield Company, Korla 84100, Xinjiang, China)
出处
《石油钻采工艺》
CAS
CSCD
北大核心
2017年第4期472-476,共5页
Oil Drilling & Production Technology
关键词
轮南油田
柱塞气举
固定式气举阀
中空柱塞
清蜡柱塞
连续生产
Lunnan Oilfield
plunger gas lift
fixed gas lift valve
hollow plunger
paraffin removal plunger
continuous production
