Borehole/Well Accessories TRIZ Cases

Injecting a tracer solution and monitoring its withdrawal profile identifies formation parameters without relying on homogeneous media assumptions.

Neutron-induced gamma-ray spectroscopy uses Doppler shifts to separate carbon signals from different distances.

A downhole deployment apparatus houses multiple tools and uses an actuation mechanism to selectively eject them at desired locations.

Segmented locking features engage a rod groove to prevent inadvertent closure and opening of the well fluid sample chamber.

Segmented CT imaging and voxel mapping bridge the gap between small subsamples and heterogeneous reservoir models.

Adjustable expandable members apply circumferential loads to restore initial stress states in subterranean rock formations.

A modified overshot grapple uses reduced helix diameters and expansion blades to expand before engaging fish.

Self-contained downhole power generation assemblies deploy a flow restrictor to create pressure drop for electrical energy production.

Downhole Coriolis flowmeters measure fluid properties in situ, eliminating the need for surface laboratory analysis.

A jarring device propels a hammer to strike wellbore casing with high radial impact forces.

A wireline milling tool creates a small casing notch to initiate window formation.

A well stimulation method evaluates fluid penetration at discrete intervals to identify optimal injection zones.

A rotating tool converts coiled tubing linear motion into controlled rotation via a tubular gear and helical grooves.

Spring washers store energy to drive a cutter, eliminating explosive transport risks and insufficient momentum issues.

Replacing mechanical excavation with a Class I laser system, this tool removes structures via laser ablation while minimizing personnel safety risks.

Hydraulic pressure drives a piston to extend a cutting arm, replacing explosive methods to ensure operational safety.

A downhole core orientation recording system captures measurements at random time intervals relative to a reference point.

Spring-loaded cutting blade extracts damaged pipe from well casing, avoiding expensive new well drilling costs.

An upward-moving inner mandrel resists flow-induced instability by engaging locking keys in the landing nipple profile without requiring no-go restrictions.

A core sample analysis method uses test fluid invasion depth to identify local permeability variations within rock formations.

A gamma radiation detector tool classifies pulses using a probabilistic Poisson model to separate true signals from noise.

Asymmetric ramped surfaces on collet protrusions prevent creeping by maintaining strong interference until purposeful activation.

Radial turbine design extracts energy from reduced flow rates, enabling unobstructed device passage through intact drill strings.

A pumpable anode slurry delivers granulated conductive material into underground formations to establish cathodic protection.

Removing struts maximizes dog load-bearing area and prevents failure under high pressure.

Trigger system detects downhole events to log core orientation data, resolving measurement precision versus device complexity trade-offs.

An optical coupling component upconverts scintillation light to match photomultiplier tube spectral response.

Multiple resettable anchors on a work string enable single-trip casing removal, eliminating time lost repositioning tools between cuts.

An elastomeric joint in the guide post flexes up to 5 degrees to accommodate angular misalignment during emergency LMRP elevation.

A rotary jarring apparatus translates rotational drive movement into axial impact between opposing surfaces.

A geological model integrates perturbation objects with reservoir data to account for wellbore effects.

Liquid-solid state molding disperses secondary particles in a molten metallic matrix to form dissolvable articles with adjustable corrosion rates.

Segmented fluid containers deploy independently from the main tool body, eliminating full retrieval for sample access.

A core barrel head assembly uses segmented latch mechanisms with mechanical advantage to retrieve stuck inner tubes efficiently.

Rotating sleeve subassembly enables axial advancement of the distal body portion to resolve engagement reliability issues across wide angular orientations.

A collar tool assembly injects treatment fluid via hydraulic pressure to release stuck tubular strings in subterranean wells.

Auxiliary spring relieves axial force from main spring to reduce mandrel drag below 4.53 kg, enhancing mechanical impulse efficiency.

External axial grooves on the core barrel assembly increase fluid flow around latch mechanisms, reducing travel time during wireline drilling operations.

An upward translation mechanism sets the mandrel without downward jarring, preventing premature pin shearing in restricted or deviated wells.

Axially oriented cam surfaces drive radial clamping force against casing walls, enabling reliable fixation and easy release under high torque loads.

A downhole apparatus projects molten thermite through a nozzle to erode hardened blockages.

Contamination removal device routes contaminated fluid back to the wellbore until purity levels allow clean formation fluid entry into sample chambers.

A toolstring with a tag sub and casing cutter precisely cuts tubulars in wells.

Dual spectral window analysis estimates a photoelectric factor to compensate for standoff variations and fluid scattering in borehole measurements.

A pulsed-neutron tool computes hydrogen index using inelastic-to-capture count rate ratios from a single gamma detector.

A dual electromagnetic fishing tool generates adjustable magnetic forces to secure and retrieve metal objects from subterranean wells.