专利名称：Actuating mechanism发明人：Michael A. Reid申请号：US10579274申请日：20041112
公开号：US20070125554A1公开日：20070607
专利附图：
摘要：An actuating mechanism for use in a tool such as a plug used in oil and gas wells.The mechanism being operable under pressure in the well bore to set the plug in a firstnatural closed state for a pressure under a predetermined pressure range; a secondclosed state wherein the plug is locked closed regardless of the pressure; and a third
open state by increasing the pressure to the predetermined pressure range and holdingthe pressure in the range for a predetermined time. Electronic and mechanical, dualpiston, actuating mechanisms are described as is a method of controlling fluid flow in awell bore using the plug and performing a pressure test against the plug.
申请人：Michael A. Reid
地址：Aberdeen GB
国籍：GB
更多信息请下载全文后查看
因篇幅问题不能全部显示，请点此查看更多更全内容