Borehole/Well Accessories TRIZ Cases

A drilling locking device uses a pressure spring and tubular piston to hold pivotable latches in an extended position for secure core barrel engagement.

Segmented cutter bases with tungsten carbide buttons break chips into small pieces, preventing drillstring sticking from long shavings.

A motor-driven coring bit with a flexible shaft collects core samples inside the wellbore, eliminating time loss from tool removal.

An overshot and guide nipple bridge cut tubing stubs to restore downhole access below abandoned packers.

A multi-packer tool buffers pressure pulses in a middle interval, eliminating hydrostatic interference for accurate vertical permeability measurements.

Estimates hydrocarbon concentration in drilling mud using regression curves and isotope signatures to differentiate formation fluids from drill bit byproducts.

Real-time parameter monitoring detects magma transition zones, enabling safe drilling into high-temperature reservoirs.

A plug deployment tool uses a piston system to dispense plugging devices into a wellbore.

Radial compression of control lines prevents fluid spillage and zonal cross-flow during intelligent well abandonment.

Dual-port sampling tools inject cleaning fluid to clear passages and barrier fluid to prevent drilling mud contamination.

A neutron imaging device uses sealed source detectors to map formation density in cased wells.

A downhole casing pulling tool uses hydraulic pressure to expand an anchor mechanism that grips the internal surface of stuck tubulars for retrieval.

A real-time evaluation system processes drilling measurements to determine wellbore storage and flow capacity for lateral wells.

A hydraulic line connector integrates a debris filter to capture contaminants within the fluid path.

Segmenting the tool collar isolates sample chambers from rotational bending stresses while a dynamic cam interface enables secure retention and easy removal.

Condition deep resistivity data with effective porosity to generate a flow index curve for carbonate reservoir analysis.

Acoustic sensors detect cuttings reflections in boreholes, eliminating surface analysis delays that hinder real-time drilling optimization.

Composite fuel sources with resilient solid propellants prevent fracture under severe wellbore vibrations, ensuring reliable tool operation.

A formation testing tool isolates sample and contamination zones to extract pure fluid.

Variable actuation of a downhole flow control device limits probe force to prevent formation damage while ensuring effective sealing.

A resettable pressure activated device uses a piston and return spring to control activation thresholds.

A behind-casing fluid sampler uses a shape charge to perforate the cement sheath, enabling repeated sampling without halting production.

Hydraulically actuated shear pig assemblies sever tube-wire in deviated wellbores where gravity-dependent tools fail, using radial cutting motion.

Radially movable anchor tool blades engage wellbore grooves to resolve elasticity errors in lowering materials.

Hydraulic latch decouples housing from mandrel, eliminating rapid winch rotation and reducing wire fatigue.

Sliding magazines position satellites while pressure equalization pumps balance wellbore forces to prevent safety hazards during injection.

A computer system selects hydrocarbon wells using a priority index based on production parameters.

A fluid-driven jarring device uses a deformable sphere to obstruct flow and compress a spring for mechanical impact generation.

A hydraulic connector transfers pressure compensation between circuits to enable reliable wet-mating.

Segmented collets grip the inner sleeve of a stuck coiled tubing logging plug, preventing pump damage during extraction.

Segmented release lugs with axial projections engage mandrel grooves to prevent misalignment under tensile loads while maintaining compact jar length.

Projecting part abuts casing edge to prevent damage while cutting stuck control lines.

Leaf springs bias the tool holder away from the apparatus body, minimizing bending forces on gas lift valves during precise positioning.

A circular cutting torch uses a progressive compression deflector to redirect molten material radially outward during thermal pipe severing.

Co-located densimeter and optical sensor combine density and absorption data to resolve dynamic range limits in downhole contamination monitoring.

A subterranean setting tool regulates piston rod movement speed using fluid flow restriction to control actuation dynamics.

Leveling modules compensate for seabed height variations while the rotatable arm adjusts pile orientation without adding weight.

Inflatable inert sampling bag displaces fluid cushion to isolate formation fluid from metal chamber walls, preventing chemical contamination.

A downhole article uses a protective coating to delay corrosion and maintain mechanical integrity during service.

A thermite casing removal tool melts wellbore steel using a dense nozzle array.

Segmented cutters use hydraulic pressure to trigger explosive or abrasive cutting, ensuring reliable pipe separation when primary methods fail.

Stacked mill bits with circulation subs enable sequential bit engagement, eliminating multiple trips and reducing rig time during tubular milling operations.

Segmented inner and outer probes with passive scraper mechanisms remove contaminated fluid from formation walls to isolate clean samples.

Periodic sampling reduces unnecessary data collection and vibration interference, extending equipment life while maintaining accurate orientation measurements.

A subsea running tool uses latching hooks to secure retrievable units during installation operations.

Universal guide plates with standardized interfaces resolve the complexity of designing separate components for different motor types.

Radial slip blade actuation adapts the tool diameter to various fish sizes, eliminating costly tripping operations required by fixed-size spears and overshots.

Nested compression sleeves isolate downhole NMR magnets from extreme pressure and vibration, preventing measurement corruption.