08714250 is referenced by 6 patents and cites 18 patents.

A multilayered ball sealer having a deformable layer. The multilayered ball sealer has an outer or intermediate layer that is deformable under pressure. In the former, the deformable layer may be water-soluble or hydrolysable. In the latter, the outer layer is a sheath that contains the deformable layer and adapts to its shape. A multilayered ball sealer may be used as a diversion agent by being suspended in a fluid injected into a wellbore and applying pressure to deform the shape of the intermediate layer such that the multilayered ball sealer adapts to the shape of a perforation opening on which the multilayered ball sealer has seated.

Title
Multilayered ball sealer and method of use thereof
Application Number
12/252044
Publication Number
8714250 (B2)
Application Date
October 15, 2008
Publication Date
May 6, 2014
Inventor
Jorge E Lopez de Cardenas
Houston
TX, US
Eric Clum
Sugar Land
TX, US
Curtis L Boney
Houston
TX, US
Belgin Baser
Houston
TX, US
Agent
Tim Curington
Rachel E Greene
Assignee
Schlumberger Technology Corporation
TX, US
IPC
E21B 33/13
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