Sealing/Packing TRIZ Cases

Thermally expanding fluid drives a piston to expand the packer radius, compensating for thermal contraction after steam injection.

A packer assembly uses a segmented setting collet to transition through intermediate positions for rapid zone isolation.

Segmented backup ring assembly employs interlock members to restrain radial expansion and prevent seal extrusion past gage rings.

Pressurized fluid activates a well barrier sealing element through selective opening device control for remote downhole operation.

Ratchet locked anchor mandrel prevents premature release under pressure fluctuations, maintaining wellbore seal integrity.

Embedded tubular perforate reinforcements in cementitious columns maintain vertical load transfer during seismic events.

Rotating rams pivot about a pin to seal the bore, reducing device size and complexity compared to conventional radial designs.

Interchangeable flanges on a central housing reduce inventory needs and stack-up height while extending equipment lifespan in oil wells.

A disposable downhole setting tool assembly uses a power charge mandrel to actuate a barrel piston for direct coupling with workstrings.

Tapered plug assembly expands fingers against the wellbore wall to resolve sealing quality versus device complexity.

Lever arm support shoes mitigate swabbing forces on sealing elements, enabling faster run-in speeds without premature actuation.

Actuation member transfers surface lifting force to expanded load member, enabling over-pull test confirmation of casing hanger engagement.

Radial booster piston extension doubles shearing force without increasing BOP stack height or adding vulnerable hydraulic lines.

Identical opposing shear ram geometry reduces BOP manufacturing costs and maintenance complexity by eliminating specialized part inventories.

Interlocking metal seal segments expand radially to isolate fluid pressure, resisting wear from casing burrs and extending service life.

Pivoting slip members distribute stress across brace surfaces to resolve force concentration issues in downhole anchor systems.

A swellable packer uses multiple inclined seal elements to achieve adjustable differential pressure sealing without changing element length.

Segmented swellable elements address sealing reliability across varying fluid types while managing device complexity.

A ball member expands a seal member radially into wellbore contact to isolate pressure without axial compression.

A tubing hanger running tool assembly actuates a segmented ring between contracted and expanded configurations to secure the hanger in a wellhead groove.

Pressurized polymerization yields polyglycolic acid articles with 250-350 MPa strength, reducing material usage for well drilling.

Segmented push rods distribute release force across the lower cone, preventing snap ring damage during retrievable packer extraction.

Stackable expandable lock rings increase contact area through a domino expansion mechanism, addressing limited load capacity in subsea wellhead systems.

A pressure-assisted motor ram actuator drives a drive screw to extend a sealing ram within a well control housing.

A wiper plug with a removable core creates an internal passage for downhole tools without drilling through the plug body.

Hydrolysable carbides and nitrides allow downhole tool components to degrade, eliminating expensive milling operations.

A tubular sheath with controlled longitudinal elongation capacity shapes sleeve ends into a hemispherical profile during inflation.

Anti-rotation element blocks energizing ring movement to enable positive locking without bushings.

Frustoconical cam converts axial load to radial expansion, locking hanger without spool penetration or rotation.

An annular seal reinforced with aramid fibers resists wear and inversion under high differential pressures, extending service life in rotating control devices.

Conventional dissolvable plugs shrink casing diameter. This assembly restores original bore size by expanding via a conical wedge action.

Hydrolyzable metal anchors expand through chemical reaction with wellbore fluids, sealing roughened surfaces and open holes where rubber seals fail.

Metal sleeve buckles against end ring under directional pressure to limit outer seal deformation and prevent leakage in high-pressure wells.

Gas expansion displaces hydraulic fluid through a metering device, enabling reliable wellbore isolation while navigating tight restrictions.

An asymmetric metallic seal uses stepped inner bores to engage mismatched sealing interfaces.

A hanger assembly uses a slip bowl and false bowl to grip tubular members securely in wellheads.

Collapsible retaining ring locks casing hangers against cement hydration forces, preventing lift-off and protecting set cement integrity.

Finned inserts limit beam spring compression to prevent plastic deformation and ensure seal reliability under high downhole loads.

Concave protective sleeve shields wellhead lockdown screws from pressure and erosion, preventing equipment damage during stimulation.

Axial tension on an elastomeric packer element eliminates pressure equalization valves and debris relief passages.

A magnetorheological fluid base plug transforms into a viscoelastic solid to support cement slurry placement in wellbores.

H-style slip mechanism distributes loads across wickered surfaces, preventing tensile failures during retrieval operations.

A cementing apparatus uses a moving member and float device to indicate annulus fill level during reverse cementing operations.

Segmented slip members with overlapping upper ends prevent gap formation at the wellbore interface, maintaining seal integrity during radial expansion.

Stabilized treatment slurry dehydrates downhole to form a fluid barrier using a screen and chamber tool.

Axial piston movement displaces metal particles radially against the borehole wall, enabling high expansion ratios for openhole washouts.

An articulated mechanism with rotary joints positions a tool across multiple valves, reducing equipment weight and installation complexity.

Swellable metals form durable annular seals through hydration, resisting degradation from high salinity and temperature environments.