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- Title
起下钻引发的环空瞬态波动压力计算方法.
- Authors
赵岩龙; 任传杰; 冯智; 祝宏平; 米翔; 尹俊轩
- Abstract
Accurate calculation and prediction of wellbore transient surge pressure is essential to ensure drilling safety. Through the analysis of the wellbore flow path, a calculation model of the transient surge pressure in the wellbore annulus was established. The characteristic line method was used for numerical solution, and the transient surge pressure value and the time distribution characteristics of the transient surge pressure in the annulus could be obtained. The calculation results of the drilling process based on the data of a well on site show that the pressure wave propagates in the wellbore flow channel in the form of elastic wave. As the operating speed of the drill pipe increases, the transient surge pressure in the annulus increases. During on-site drilling operations, under the premise of ensuring drilling safety, the impact of transient pressure fluctuations can be reduced by reducing the density of the drilling fluid and the tripping speed.
- Publication
Science Technology & Engineering, 2022, Vol 22, Issue 13, p5198
- ISSN
1671-1815
- Publication type
Article