Drilling Rods TRIZ Cases

Deep-drawn expendable hollow carriers enable direct perforating gun coupling, cutting string weight, length, and fluid leak paths.

Blocking wedges, bulges, and recesses create a double mechanical stop that transfers axial loads while reducing thermal bridging in pipe-in-pipe joints.

Sloped interference-fit sealing faces raise drillrod coupler torque capacity and keep airtight joints under pressures up to 100 MPa.

A battery-powered propulsion wheel between roller sections cuts friction and extends cable pulling reach in curved and horizontal wells.

A petaloidal chuck adapter enables twist-lock fitting of different drill steel sizes, cutting modification cost and wear in mine drilling.

Opposing lip and collet features hold the valve sealed until a set pressure is reached, reducing leakage and preserving wellbore backpressure.

Combining constant and varying thread widths cuts machining passes while preserving tensile strength and high torque in pipe connections.

A layered titanium, hafnium oxide, chrome, and gold coating cuts thread friction while blocking corrosion and galling in harsh service.

Hydraulic collets remotely couple fracking trees to wellheads or Christmas trees, avoiding manual alignment, heavy handling, and safety risks.

An axial locking member secures rods and tubes without manual torque, reducing rig handling hazards and simplifying string connection.

A gate-and-lobe rotary drive replaces Moineau elastomers and universal joints, shortening downhole motors for high-temperature directional drilling.

An S-curve pressure flank and interference-fit thread geometry cut coupling torque, reduce stress concentration, and prevent cross-threading.

Controlled pin-box clearance and box-to-pin wall thickness balance internal-pressure sealing with external-pressure sealability in large steel pipes.

An angled branch fitting uses suction and retaining doors to clean drilling mud flow lines and support post-cleaning camera inspection.

A spring-locked clutch connector replaces threaded make-up, prevents back-off, and blocks hydrocarbon return with a dual flapper check valve.

A fluid bladder and check-valve coupling shifts subsea modal response to cut wave-driven vibration, extend weather windows, and lengthen equipment life.

Rotation bearings and a split support let a surface BOP and marine riser handle vessel motion, high moments, and vertical movement.

A force-relieving pathway diverts radial loads from the sled drive gear to reduce rack wear, extend service life, and lengthen servicing intervals.

A PVDF-based fluoropolymer blend with high HFP copolymer content improves fatigue life and thermal durability in deep-sea flexible oil tubulars.

A dual-taper pin-and-box thread layout boosts external-pressure sealing by preserving pin wall thickness while maintaining internal sealing and load stability.

Fluid-linked radial and axial elastomer domes improve multi-direction vibration and shock isolation for sensitive payloads.

Sequential two-step wedge threads control make-up position, prevent seal stand-off, and maintain reliable metal-to-metal sealing.

An interior weld patch over the longitudinal seam creates a uniform pipe ID, enabling stronger threaded connections and leak-tight seals.

Continuous dynamic heat treatment varies coiled tube strength and corrosion resistance by section, improving fatigue life and reducing weight.

A harmonic gear propulsion module boosts gear ratio in a compact pulling tool, enabling smaller motors to pull cable through narrow wellbores.

A high-angle metal retaining strip replaces fibre-reinforced tapes to cut pipe cost while improving hydrolysis resistance and radial protection.

A shallow tangential recess protects pipe RFID tags from wear and pressure exposure while preserving piping strength and read range.

Vibration-assisted lifting with slotted supports helps extract stuck wellbore tubulars, access cables laterally, and reduce lifting height.

A replaceable wear bushing in the split bowl bore absorbs drill string friction, limiting wear and preventing slip release during drilling.

Helically twisted grooves and lands raise drill pipe stiffness at constant weight, reducing bending and friction in horizontal wells.

Varying-width wedge threads delay shoulder contact to widen torque range, maintain sealability, and prevent thread disengagement.

Flared and thickened tubular ends raise weld fatigue life in metallic risers while preserving weld quality and internal flow capacity.

A gapped slip sleeve and rotation lock join different-diameter coiled tubing while improving sealing and resisting deep-well tension and torque.

Seal-point spacing, shoulder angle, and box-to-pin wall thickness help threaded steel pipe joints maintain contact pressure under internal and external loads.

A coiled flat member self-forms a slit tube, then heat joins its longitudinal edges to deploy long continuous pipe with less field assembly.

Opposing conical bonded surfaces spread torsional loads in a composite torque pipe joint, improving bond integrity and durability under high torque.

Matched pin and box arc seal surfaces improve contact length and maintain leak resistance under high compressive stress.

A sleeve-compressed collet locks into thread relief for fast sucker rod end protection without thread damage or hand tools.

A notched annular seal locked into a recessed housing prevents displacement in tubular connector protectors, improving sealing and handling.

A zinc-based metallic coating with passivation and lubricant layers protects threaded well connections from corrosion and galling without grease-related blockage.

An elliptical root and radiused thread transitions cut stress concentration while boosting torque, tensile capacity, and sealing in well tubular joints.

A prefabricated spacer inside a downhole flat pack keeps tubes straight and evenly separated, improving installation safety and jacket removal.

A corrosion-resistant weld overlay helps vacuum-insulated tubing survive HPHT well pressure and heat without collapse, cracking, or vacuum loss.

By separating rotation from extension in the drill head, this case avoids high-pressure rotary seals, lowering heat, wear, and seal failure risk.

Modified load and stab flank angles cut cross-threading and enable composite pipe machining while preserving high-pressure sealing.

A larger shoulder angle in a wedge-thread steel pipe joint boosts torque resistance while preserving metal-to-metal seal contact and stiffness.

A coiled flat member is formed into a slit tube and heat-joined along its edges, enabling continuous long-pipe deployment with strong sealing.

Cooling and heating bundled subsea flowlines deposit then re-entrain wax, cutting installation vessel needs and extending tie-backs.

A long gripping surface and local reinforcement let power tongs apply higher makeup torque while protecting threaded sections from damage.

Spinodally hardened Cu-Ni-Sn couplings reduce galling and corrosion while maintaining high strength for longer oilfield service life.