Logging Cable
Logging Cable (also known as Wireline) serves as the critical link between surface recording equipment and downhole logging tools.
It is responsible for supplying power to downhole instruments and transmitting high-precision formation data in real-time, while also acting as the primary load-bearing member to support the weight of the tool string.
Our logging cables feature a dual-layer, counter-helically wound high-strength galvanized steel wire construction, ensuring exceptional tensile strength and superior torque balance.
| Components | Material Options | Technical Functions |
|---|---|---|
|
Conductor
|
Tinned Copper / Silver-plated Copper
|
Core for signal and power; plating prevents vulcanization and enhances conductivity. |
|
Insulation |
PP, ETFE (Tefzel), PFA (Teflon) |
High dielectric strength; ensures signal stability in environments up to 315°C (600°F). |
|
Shielding & Filler |
Copper Braid / Conductive Plastic |
Eliminates EMI between conductors to ensure high-frequency data integrity. |
|
Inner Armor |
Galvanized Steel Wires
|
Primary load-bearing layer; counter-helically wound to cancel torque under tension. |
|
Outer Armor |
IPS, GEIPS, SS, Monel |
Outermost protection; endures wellbore abrasion and provides ultimate breaking strength. |
Open-hole & Cased-hole Logging
Used to acquire physical parameters such as resistivity, sonic, and radioactivity.
Perforating Services
Deploys perforating guns and provides precise triggering for reservoir connectivity.
Downhole Intervention & Maintenance
Used for setting bridge plugs, packers, or operating downhole camera systems.
HPHT Environments
Specialized high-temperature insulation (Teflon/PFA) solutions for ultra-deep wells.
| Parameter | Typical Range / Options |
|---|---|
|
Cable Diameter |
Available in standard sizes including 3/16″, 7/32″, and 15/32″ (4.7mm – 11.8mm). |
|
Conductor Count |
Versatile configurations featuring 1, 3, or 7 conductors. |
|
Max. Breaking Strength |
Ranges from 15 kN to over 100 kN (depending on diameter and material). |
|
Temperature Rating |
Scalable solutions for 150°C (302°F), 232°C (450°F), and 315°C (600°F). |
|
Capacitance |
Optimized pF/m ratings to ensure long-distance signal transmission integrity. |
Hybrid Signal Conductors
Integration of Fiber Optic units within the cable core for distributed temperature sensing (DTS) or high-speed acoustic data telemetry.
Anti-Cage/Anti-Birdcage Design
Specialized winding tensions and lubrication coatings to prevent armor deformation during high-speed deployment or rapid pressure changes.
Continuity & Electrical Validation
Full-length testing under simulated pressure loads prior to delivery.
Armor Integrity Testing
Rigorous salt spray and flex-fatigue tests on armor wires to ensure corrosion resistance.
Mechanical Stability
Verification of torque balance and elongation properties to maintain stable performance downhole.
