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钻压推加器由钻井液的液压力产生钻压。开泵时，钻压推加器使下部井底钻具组合与钻柱的其余部分相分离，以便提供一个恒定的、可控的钻压，减少轴向振动和冲击。１２０多次的应用证明，钻压推加器在涉及有振动或冲击问题的井眼中具有非常大的改善钻井性能的能力。无论是水平井还是垂直井，在直径为１２１４～３７８ｉｎ的井眼中，且井深可达５４００ｍ的条件下，这项技术已被用于提高机械钻速和钻头寿命，改善施工条件和减少井下事故。这个系统不仅在固定钻机上使用，而且在浮式钻机上也得到使用，极大地减少了每英尺的费用。本文阐述了钻压推加器的功能和原理，解释了使用它们的可能性和限制条件，详细论述了某些应用条件下的优化钻压推加器的准则，提供了４个地质区域４口井的详细的现场应用数据。
Drill pressure thrusters produce a weight-on-bit from the hydraulic pressure of the drilling fluid. When the pump is on, the WOB push-off device separates the bottom hole assembly from the rest of the drill string to provide a constant, controlled weight-on-bit that reduces axial vibration and shock. More than 120 applications have proven that the weight-push thruster has a very large ability to improve drilling performance in boreholes that involve vibration or impact problems. This technique has been used to increase ROP and bit life, improve construction conditions and reduce downhole accidents in both horizontal and vertical wells in boreholes 12 to 37 inches in diameter and up to 5400 meters of well depth. The system is used not only on stationary rigs but also on floating rigs, dramatically reducing the cost per foot. This paper describes the functions and principles of WOB push-pushrs, explains the possibilities and constraints of using them, discusses in detail the guidelines for optimizing WOB push-pushrs for some applications, and provides four geo- Well detailed on-site application data.