Wellbore cementing system

Details Wellbore cementing system Wellbore cementing system

1996-04-16

1998-08-04

Tsay, Frank

Wells

Cementing device

166142, 166153, E21B 2308

Patent

active

057879796

ABSTRACT:
A new wellbore cementing system has been developed which includes, in certain embodiments, a plug container with a flow diverter for diverting a portion of flowing fluid away from plugs in the plug container; a plug set system with internal sleeves or dart receivers with shearable parts for shearing to selectively release plugs--all in certain embodiments made of non-metal material and/or plastic; a swivel equalizer with internal valving to isolate a plug set (or any other item) from torque and to relieve pressure below the swivel equalizer; and unique burst tube systems for selectively controlling fluid flow and plug system operation.

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PCT/GB96/01007 Int'l Search Report in foreign application re parent of present US case.

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