WELL BACKGROUND TOOL TO PERFORM A WELL BACKGROUND OPERATION AND METHOD TO CONTROL FLUID FLOW THROUGH A WELL BACKGROUND TOOL

摘要

downhole tool for performing a downhole operation, downhole tool for performing an operation within a drilled well and method for controlling fluid flow through a downhole tool a bottom tool is described well 50 including a ball valve 60 having a rotary ball 100 and providing complete offset tendency through a flow path 70 to valve 60 over a portion of a ball rotary scale 100. an internal bore 110 of ball 100 includes a first aperture 120 wider than a second aperture 130, and the internal perforation 110 transits between the first aperture 120 and the second aperture 130. the first aperture 120 covers or encompasses an aperture formed by a first perforation portion 80 over a ball rotary scale 100, and the second aperture 130 may be completely encompassed by an aperture formed by a second portion drilling 90 on a rotary scale when the internal drilling 110 is not centrally aligned with the first drilling portion 80 or second drilling portion 90.