08327931 is referenced by 48 patents and cites 553 patents.

A tripping ball including two or more dissolution resistant parts of a ball and an adherent dissolvable material binding the two or more parts of the ball together. A method for making a tripping ball is also included.

Title
Multi-component disappearing tripping ball and method for making the same
Application Number
12/633677
Publication Number
8327931 (B2)
Application Date
December 8, 2009
Publication Date
December 11, 2012
Inventor
Zhiyue Xu
Cypress
TX, US
Gaurav Agrawal
Aurora
CO, US
Agent
Cantor Colburn
Assignee
Baker Hughes Incorporated
TX, US
IPC
E21B 29/02
E21B 33/12
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