水力冲击法解堵的研究及应用

RESEARCH AND APPLICATION OF PLUG REMOVAL WITH HYDRAULIC IMPACT METHOD

刘洪军

Liu Hongjun

大庆石油管理局第七采油厂

在简单分析大庆油田推广应用的几种物理法采油技术的基础上,提出了水力冲击解堵技术。该技术是依据流体运动中的水击现象作用原理进行工作的。介绍了水力冲击发生器的结构组成及工艺管柱结构、工作原理和工艺流程;对水力冲击发生器产生的冲击压力进行了分析,并给出了估算冲击压力的理论计算公式,计算表明,水力冲击器能产生20~40MPa的冲击压力;评价了该冲击压力对套管和油管不会造成损害。还给出了该技术的现场试验结果,最后得出几点有益的结论。

On the basis of analysis of several physical oil producing technique applied in Daqing Oilfield,this paper presents the technique of plug removal with hydraulic impact.This paper introduces the structure of hydraulic impact generator,the structure of the tubing string,the working principle and process;this paper also analyzes the surge pressure produced by the hydraulic impact generator,and presents the theoretical calculation formula used to estimate the surge pressure.Calculation results show that the generator can produce 20~40 MPa surge pressure which will not damage the casing and the tubing.Finally,this paper presents the field test results and several beneficial conclusions.

10.3969/j.issn.1000-7393.1999.05.023