Borehole/Well Accessories TRIZ Cases

Diverter ring separates downward fluid into upward and outer paths, reducing pressure buildup below tools during wellbore operations.

A drill rig data acquisition board formats sensor signals and transfers them to mobile devices.

Segmented hydraulic mill cutting members shear off when trapped, enabling service string retrieval while minimizing wellbore debris.

Varying lug projection widths prevent angular misalignment, maintaining reliability without increasing device length.

Liquid hydrocarbon fuel ignition drives a piston to set packers, replacing hazardous high explosive charges for safer transportation and operation.

A radially deformable member compresses slips against a tubular wall to secure an anchor through frictional engagement.

A downhole formation testing fluid chamber uses a buffer fluid and piston to isolate solids from tool components during flowback.

Open-loop speed pulses cancel stick-slip oscillations in drillstrings, avoiding instability from noise and delay inherent in continuous torque feedback systems.

A downhole wire retrieval device cuts stuck cables and retains segments in a holding cavity.

Extending tabs on parallel plates guide fluid through larger radius turns to reduce turbulence in subterranean debris separation.

Perforate casing to inject pressurized fluid that displaces viscous drilling mud, reducing drag for longer single-operation extraction.

A single-use setting tool integrates a gas-generating power charge within the piston cavity to actuate wellbore components.

Pivoting arms expand radially to grip featureless tubing, resolving limited expansion constraints in standard wellbores.

A spring-loaded latch mechanism couples a whipstock to an anchor for simultaneous retrieval from a wellbore.

Segmented mechanical opening and widening removes softened annular space material without deforming the pipe during borehole rehabilitation.

Screens between the borehole wall and inlets filter particulates from unconsolidated formations, preventing internal clogging during suction.

A shape memory alloy guide expands radially to surround a skewed fish after passing through a wellbore restriction.

A collapsible junk guiding device compresses into a cylindrical shape for easy insertion and expands to capture debris in oil wells.

Electromagnetic wireline actuation replaces bulky mechanical devices with compact magnetic force to activate downhole tools efficiently.

Mandrel grooves engage live slip ends to prevent downhole separation during retrieval, maintaining tubing tension and pump efficiency.

Unified downhole sensor data analysis using a cleanup exponent to estimate fluid properties.

Downhole milling tool uses independent cutter control to reduce non-productive time during long casing sections.

A reverse drill stem testing method injects a weighted fluid pill into a wellbore zone to evaluate formation properties.

Normalization of element capture spectroscopy logging data establishes a curve response equation set for stratum rock component analysis.

Aluminum-Bronze ring valve expands to seal fluid flow in a jarring device barrel assembly.

A proxy model approximates downhole fluid contamination levels using kriging-based interpolation to predict cleanup times and volumes.

Optical spectroscopy extracts mud filtrate spectra from contaminated samples, resolving measurement precision issues during downhole fluid analysis.

A self-orienting mule shoe uses buoyancy to align with preexisting casing, reducing rig time during tubular entry operations.

Segmented release lugs with varying projections engage mandrel grooves to prevent angular misalignment in jarring tools.

An integrated power charge drives an inner piston axially to actuate wellbore tools, eliminating complex reusable components and reducing operational risk.

Fluid jet nozzles cut casing and cement into removable wedges, exposing formation rock to eliminate annular gaps and ensure permanent wellbore sealing.

Retractable torque pins transmit rotational force via milled slots to rotate casing strings without tightening threaded connections in deviated boreholes.

Closed-loop control maintains potential within −800 mV to −950 mV range, preventing hydrogen embrittlement and corrosion.

A core catching tube with fluid ports and a cushion prevents explosive decompression damage during transport by maintaining formation pressure.

A dual packer formation testing instrument uses reverse injection to establish probe communication.

Sliding bell guides cut wireline cables under excessive load to prevent premature detonation of explosive charges in wellbores.

A downhole subassembly weakens casing strings before a milling assembly drills the window exit.

Neutron gamma-ray spectroscopy measures chlorine and oxygen ratios to determine formation salinity, correcting resistivity-based water fraction estimates.

Radial lugs on the whipstock connector engage lug pockets on window mill blades to eliminate rigid shear bolt alignment at the rig floor.

A downhole sampling tool uses a pressure compensation system to maintain collected fluid phase integrity during retrieval.

Rotating sleeves drive anchoring buttons to lock tubing inner diameters, eliminating costly thread manufacturing.

A downhole milling apparatus extends cutter bases radially via a fluid-driven piston for tubular cutting operations.

Derivative constraints simplify reservoir modeling, reducing data requirements and development time while maintaining accuracy.

Actuated valves control multiple sized sampling chambers, allowing downhole tools to adapt volume without redesign.

A mechanical jar piston uses fluid pressure and a biasing arrangement to generate sudden impact force.

A jarring tool piston uses a plug seat to generate force via fluid pressure differentials.

An indexing mechanism activates separate cutter sets sequentially, enabling multiple casing cuts in a single trip and eliminating costly wellbore retrieval.

Radially movable anchor tool blades engage a fixed groove receptacle to eliminate elastic depth errors and ensure precise placement.