Drop ball catcher apparatus
December 10, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3913675 Method and apparatus for testing and treating well formations Flapper type safety valve for subterranean wells Production tubes for use in the completion of an oil well Activation mechanism for differential fill floating equipment Multiple-set packer and method Liner hanger with retrievable ball valve seat Multiple-set downhole tool and method Reverse circulation float equipment tool and process Downhole surge pressure reduction system and method of use InventorsAssigneeApplicationNo. 10315666 filed on 12/10/2002US Classes:166/318, Operated by dropped element166/332.4, Operated by means inserted from the surface166/332.8, Flapper type166/278, Graveling or filter forming166/264, Sampling well fluid166/317, Destructible element166/387, With sealing feature (e.g., packer)166/382, Providing support for well part (e.g., hanger or anchor)166/374, Operated by fluid pressure controlled above ground166/285, Cementing, plugging or consolidating166/291, With piston separator166/66IndicatingExaminersPrimary: Bagnell, DavidAssistant: Smith, Matthew International ClassE21B034/14AbstractA drop ball catcher apparatus for use with downhole tools in oil well drilling and installation operations. A drop ball catcher apparatus is used to receive and stow a drop ball ejected from a ball-actuated downhole tool.Field of SearchOperating valve, closure, or changeable restrictor in a wellOperated by fluid pressure controlled above ground Placing or shifting well part VALVES, CLOSURES OR CHANGEABLE RESTRICTORS Operated by dropped element Destructible element Operated by means inserted from the surface Flapper type WITH MEANS MOVABLE RELATIVE TO TOOL OR SHAFT TO CONTROL BELOW-GROUND PASSAGE | |
