一种大直径管道水平定向钻回拖力计算模型、方法及装置
By calculating friction, gravity, and fluid resistance in segments, and taking into account the weight of the anti-corrosion and insulation layer and the effects of pipe bending, the problem of inaccurate calculation of pullback force in horizontal directional drilling of large-diameter pipes in existing technologies has been solved, achieving more accurate prediction of pullback force and control of construction risks.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
- Filing Date
- 2023-04-27
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, the formula for calculating the pullback force in horizontal directional drilling of large-diameter pipes is simple and does not fully consider the impact of pipe bending, which increases the risk of pullback obstruction or failure in complex geological environments.
A calculation model for the pullback force of horizontal directional drilling of large-diameter pipelines is proposed. Friction, gravity and fluid resistance are calculated by segmented formulas, and the effects of the density of the anti-corrosion and insulation layer and pipeline bending are considered to establish a mechanical model that is more in line with engineering practice.
It improves the accuracy of pullback force calculation, can predict the trend of pullback force changes, reduces construction risks, reduces equipment resource waste, and meets construction needs.
Smart Images
Figure CN116522639B_ABST