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自適應鉆桿扭矩控制系統
自適應鉆桿扭矩控制系統
發布時間:2015-04-09 09:17:57

    粘滑振動是一種典型的非線性自激振動,是鉆桿在鉆井過程中面臨的最為常見的危害,發生概率高達40%。是造成鉆桿和鉆具組合疲勞甚至斷裂,鉆頭磨損的主要原因。粘滑振動還會導致鉆頭偏離期望的鉆井方向,或者損壞井壁使井壁坍塌。粘滑振動過程中鉆頭轉速瞬間達到很大值,扭矩波動也很大。

 

   軟扭矩控制是一種針對粘滑振動進行主動控制的方法,能夠有效地抑制粘滑振動,基于頂部驅動鉆井技術的地面控制技術,硬件結構簡單,無需添加任何井底設備,與現有變頻器頂驅PLC控制系統無縫集成,變頻器與軟扭矩控制器通過CAN總線進行連接,變頻器能夠將驅動電機的當前轉速和扭矩反饋到軟扭矩控制器,軟扭矩控制器能夠將控制轉速傳輸到變頻器對鉆桿進行控制。

 

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