| 摘要 |
A COMMUNICATION TOOL APPARATUS (20) IS DESCRIBED WHICH IS ADAPTED TO PROVIDE SELECTIVE COMMUNICATION OF CONTROL FLUID THROUGH A DOWNHOLE TOOL (22), SUCH AS A SAFETY VALVE. THE DOWNHOLE SAFETY VALVE IS A TUBING RETRIEVABLE SUBSURFACE SAFETY VALVE ('TRSSSV'). THE COMMUNICATION TOOL MAY BE RUN DOWNHOLE AND WITHIN THE TRSSSV. ONCE WITHIN THE TRSSSV, THE COMMUNICATION TOOL APPARATUS ACTIVATES A CUTTING DEVICE (38) WITHIN THE TRSSSV SUCH THAT COMMUNICATION OF CONTROL FLUID THROUGH THE TRSSSV IS POSSIBLE. A REPLACEMENT SAFETY VALVE RUN ON A WIRELINE MAY THEN BE INSERTED INTO THE TRSSSV AND BE 'OPERATED VIA THE CONTROL FLUID LINE, AS A NEW COMMUNICATION PATH CREATED BY THE COMMUNICATION TOOL DESCRIBED HEREIN. A METHOD OF USING THE COMMUNICATION TOOL APPARATUS IS ALSO DESCRIBED. |
