Performance Evaluation and Structural Optimization of Arrow-shaped Backpressure Valve Device
The kick-in device of the backpressure valve plays a crucial role in the successful handling of internal blowouts during drilling.In order to enhance the operational simplicity and reliability of the device,three types of arrow-type kick-in devices for the backpressure valve currently in use were subjected to artificial blowouts using a reverse circulation method.Various practical field conditions such as different blowout heights and sulfur content were simulated to verify the performance of the device,including kick-in time,success rate,and ease of operation.Based on the issues exposed during field tests,targeted structural improvements were implemented,such as increasing the over-flow area,adding the number of handles,and designing for lightweight construction.The results indicate that the new device achieves an o-verflow area of 6 675 mm2,which is over 1.37 times larger than the original device,leading to a reduction in maximum impact force of nearly 80%.Furthermore,it shows advantages such as easy operation,strong reliability,and reduced weight.
arrow-shaped backpressure valvekick-in devicefield test evaluationstructural optimizationcontrastive analysis
万方数据
维普
