穿透率
钻探
钻井液
流体力学
石油工程
入口
流离失所(心理学)
体积流量
渗透(战争)
钻井
欠平衡钻井
机械工程
机械
地质学
工程类
物理
心理治疗师
运筹学
心理学
作者
Haibo Cui,Wei Li,Hongbing Xiao,Yufei Wang,Wei Chen,Wenting Liu
出处
期刊:Processes
[Multidisciplinary Digital Publishing Institute]
日期:2023-08-09
卷期号:11 (8): 2392-2392
被引量:1
摘要
The combination of the hydraulic impactor and positive displacement motor (PDM) is becoming more and more popular in drilling engineering. However, the negatives of the PDM on the impactor cannot be ignored. To improve the performance of the technique, the influence of fluid pulsation from the PDM on the hydraulic impactor was studied first; then, the structure of the impactor was optimized to improve its impact force; finally, field tests were carried out in 2 wells in the shallow formation. The results indicate that the fluid fluctuation generated in the PDM can restrain the performance of the impactor, and that the impact force can be increased by 24.4% to 28.6% through the optimization of design. Field tests show that this technique can further improve the drilling efficiency and rotating stability of the polycrystalline diamond compact bit, and that the rate of penetration and bit footage increase by 32.5% and 34.6%, respectively. In the study, the effect of inlet fluid fluctuation on the performance of the hydraulic impactor was studied using the computational fluid dynamics method. This is unlike other studies that have mostly considered the inlet fluid as a steady flow. Furthermore, the performance of the combine used of the impactor and PDM can be improved through structural optimization.
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