LandOfFree - US Patents - Listing for Wells,Conduit wall or specific conduit end structure

Wells – Conduit wall or specific conduit end structure

Alternate path multilayer production/injection

Wells – Conduit wall or specific conduit end structure – Downhole coupling or connector

Annular gas trap

Wells – Conduit wall or specific conduit end structure

Annular pressure relief collar

Wells – Conduit wall or specific conduit end structure – Downhole coupling or connector

Anti-rotation device for cementing plugs with deformable periphe

Wells – Conduit wall or specific conduit end structure

Anti-rotation device for use with well tools

Wells – Conduit wall or specific conduit end structure – Downhole coupling or connector

Apparatus and system to allow tool passage ahead of a bit

Wells – Conduit wall or specific conduit end structure – Downhole coupling or connector

Apparatus comprising expandable bistable tubulars and...

Wells – Conduit wall or specific conduit end structure – Downhole coupling or connector

Apparatus for absorbing shock

Wells – Conduit wall or specific conduit end structure – Downhole coupling or connector

Apparatus for centralizing pipe in a wellbore

Wells – Conduit wall or specific conduit end structure – Downhole coupling or connector

Apparatus for interconnecting continuous tubing strings...

Wells – Conduit wall or specific conduit end structure – Downhole coupling or connector

Apparatus for reducing abrasion and corrosion in mandrels

Wells – Conduit wall or specific conduit end structure – Downhole coupling or connector

Apparatus for releasably coupling two elements

Wells – Conduit wall or specific conduit end structure – Downhole coupling or connector

Apparatus for treating formations using alternate flowpaths

Wells – Conduit wall or specific conduit end structure – Flexible tube or cable

Apparatus in a drill string