Geophysical Load Bearable Detecting Cable
Heavy-duty geophysical & well wireline logging cables for oilfield and subsurface applications, in single-core and multi-core armored constructions.
Product Description
Qingzhou Cable supplies heavy-duty geophysical logging cables, well wireline logging cables and armoured detecting cables designed for demanding oilfield, geophysical, marine and subsurface instrumentation applications.
These cables provide a reliable connection between surface equipment and downhole instruments for well logging, perforation, coring and geophysical detection. Depending on the application, the cable can be supplied in single-core or multi-core constructions with different diameters, temperature ratings, shielding configurations and corrosion-resistant armor.
The cable construction consists of copper conductors, insulating plastic and steel wire armor, providing electrical transmission, mechanical protection and load-bearing capability for demanding operating environments.
At a Glance
- Single-core & multi-core (1 / 3 / 4 / 7-core) armored constructions
- Cable diameters 4.70–13.20 mm
- Temperature range −30 °C to +260 °C (ETFE / FEP high-temp options)
- Heavy-duty steel wire armor; H₂S-resistant option
- Overall or individual + overall shielding
- For well logging, perforation, coring, geophysical & marine survey
What Is a Geophysical Logging Cable?
A geophysical logging cable, also known as a well wireline logging cable, is a specialized electrical cable used to connect surface logging equipment with instruments deployed into wells or other subsurface environments. It is designed to transmit electrical signals and power while providing the mechanical strength required for cable deployment, retrieval and operation in demanding environments.
Typical applications include:
- Oil and gas well logging
- Well perforation
- Coring operations
- Geophysical exploration
- Downhole instrumentation
- Marine surveys
- River and harbor surveys
- Subsurface inspection and detection
Key Features
Heavy-Duty Steel Wire Armor
Steel wire armor provides mechanical protection and load-bearing capability for demanding deployment conditions.
Single-Core & Multi-Core Designs
Cable configurations can include:
- Single core
- 3 core
- 4 core
- 7 core
- Other customized core configurations
Multiple Cable Diameters
Available nominal diameters include:
- 4.70 mm
- 5.60 mm
- 6.40 mm
- 8.00 mm
- 11.80 mm
- 12.60 mm
- 13.20 mm
Additional constructions can be selected according to the required application and mechanical performance.
Standard & High-Temperature Options
Two temperature categories are available:
- Standard-temperature cable: approximately −30 °C to +150 °C
- High-temperature cable: approximately −50 °C to +260 °C
High-temperature constructions can use insulation materials such as ETFE and FEP, depending on the cable design.
Shielding Options
The cable can be configured with:
- Overall shielding
- Individual / phase shielding plus overall shielding
This allows the cable construction to be adapted to different instrumentation and signal-transmission requirements.
Corrosion-Resistant Armor
Armor options include ordinary steel and hydrogen-sulfide-resistant constructions for applications requiring enhanced resistance to corrosive environments.
Applications
Oil & Gas Well Logging
Our armored wireline logging cables connect surface systems with downhole instruments during oil and gas well logging operations. They can be configured with different conductor counts, cable diameters, insulation materials and temperature ratings according to the operating environment. Typical applications:
- Well logging
- Downhole instrumentation
- Formation evaluation
- Well intervention
- Perforation
- Coring
Geophysical Exploration
Geophysical logging cables are used as the connection between ground systems and underground instruments during subsurface exploration. The cable provides both electrical transmission and mechanical support for instruments deployed below ground. Suitable for:
- Geophysical surveys
- Subsurface exploration
- Geological investigation
- Downhole detection
- Instrument deployment
Marine & Oceanographic Survey
The product also covers marine surveys, river surveys and harbor surveys. For marine instrumentation and towing applications, electro-optic tow cable constructions are available, designed for demanding tow strength and communication requirements, with solutions for depths up to 6,000 meters.
Underwater Instrumentation & Tow Systems
Multi-conductor armored cables can be used for underwater instrumentation, signal transmission and tow-device applications, including multi-conductor oil well cables and electro-optic tow cables for oceanographic exploration.
Monoconductor Wireline Cable
The supplied specifications include several monoconductor designs:
5.69 mm Monoconductor Cable
| Parameter | Specification |
|---|---|
| Cable Diameter | 5.69 mm |
| Minimum Sheave Diameter | 36 cm |
| Cable Stretch Coefficient | 2.5 m/km/5 kN |
| Maximum Conductor Voltage | 1,200 VDC |
| Conductor Rating | AWG 16 |
| Minimum Insulation Resistance | 457 MΩ/km @ 1000 VDC |
| Armor Electrical Resistance | 14.1 Ω/km |
7.32 mm Monoconductor Cable
| Parameter | Specification |
|---|---|
| Cable Diameter | 7.32 mm |
| Minimum Sheave Diameter | 41 cm |
| Cable Stretch Coefficient | 1.74 m/km/5 kN |
| Maximum Conductor Voltage | 1,500 VDC |
| Conductor Rating | AWG 15 |
| Minimum Insulation Resistance | 457 MΩ/km @ 1000 VDC |
| Armor Electrical Resistance | 9.2 Ω/km |
8.18 mm Monoconductor Cable
| Parameter | Specification |
|---|---|
| Cable Diameter | 8.18 mm |
| Minimum Sheave Diameter | 46 cm |
| Cable Stretch Coefficient | 1.35 m/km/5 kN |
| Maximum Conductor Voltage | 1,500 VDC |
| Conductor Rating | AWG 15 |
| Minimum Insulation Resistance | 457 MΩ/km @ 1000 VDC |
| Armor Electrical Resistance | 6.9 Ω/km |
High-Temperature Wireline Cable
For high-temperature well logging applications, the supplied specifications include insulation systems using:
- Poly
- ETFE
- FEP
- TPX
- Camtane
Temperature ratings reach up to approximately 260 °C for selected ETFE and FEP constructions, suitable for applications where conventional cable insulation may not provide the required thermal performance. The exact temperature rating depends on the selected insulation material and cable construction.
| Multi-Conductor Instrumentation Oil Well CableMulti-conductor armored oil well cables are available for applications requiring multiple electrical circuits within one cable.The supplied specifications include:Cable Diameter | Breaking Strength | Conductors |
|---|---|---|
| 4.72 mm | 15.15 kN | 4 |
| 6.35 mm | 26.26 kN | 4 |
| 6.35 mm | 26.26 kN | 7 |
| 9.45 mm | 57.57 kN | 7 |
These constructions are suitable for applications requiring multi-channel signal transmission and downhole instrumentation.
Electro-Optic Tow Cable
For demanding marine and geophysical towing applications, electro-optic tow cable constructions are available with different cable diameters, breaking strengths, conductor counts, DC resistance and weight in water. Breaking strengths range from approximately 64.64 kN to 214.21 kN in the supplied examples, suitable for demanding tow-strength and communication requirements including minesweeping, sonar and geophysical applications.
| Technical SpecificationsItem | Available Options / Specification |
|---|---|
| Product Type | Geophysical Logging Cable / Well Wireline Logging Cable |
| Conductor | Copper |
| Armor | Steel Wire Armor |
| Core Configuration | 1, 3, 4, 7 cores and other configurations |
| Nominal Diameter | 4.70–13.20 mm listed options |
| Temperature Rating | Up to approximately 260°C for selected constructions |
| Shielding | Overall / Individual + Overall |
| Corrosion Protection | Ordinary Steel / H₂S-Resistant Construction |
| Insulation Materials | Poly, ETFE, FEP, TPX, Camtane |
| Application | Oil & Gas, Geophysical, Marine, Underwater Instrumentation |
| Standards Listed | Q/HN039-2014; SY/T6600-2004 |
The listed standards and technical parameters are based on the supplied product document.
Why Choose an Armoured Wireline Logging Cable?
For demanding downhole and geophysical applications, cable selection is not only about electrical transmission — the cable must also match the required mechanical strength, temperature rating, electrical performance, corrosion resistance, cable diameter and core configuration. Choosing the correct construction helps ensure compatibility with the logging equipment and the operating environment. The cable should be specified according to:
- Well depth
- Operating temperature
- Required conductor count
- Required cable diameter
- Required voltage
- Mechanical loading requirements
- Corrosive environment
- Shielding requirements
- Sheave dimensions
- Downhole instrument requirements
Custom Wireline Cable Solutions
Different well logging and geophysical projects may require different cable constructions. Qingzhou Cable can evaluate the required specifications based on your application, including:
- Number of cores
- Cable diameter
- Conductor construction
- Insulation material
- Temperature rating
- Armor construction
- Shielding configuration
- Corrosion resistance
- Electrical characteristics
- Mechanical requirements
For project-specific requirements, please provide the application, cable length, core number, diameter, operating temperature, working depth and technical specification when requesting a quotation.
Certificate Display
Type and routine tests are issued from our own testing centre under the ISO 9001 quality system — test reports and certificates accompany every shipment.
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Packing & Shipping
- Wooden, steel or steel-wood drums; drum length to customer requirement
- Drum marking per customer / utility specification
- Both drum ends sealed and protected for sea freight
FAQs
A well wireline logging cable is a specialized armored cable used to connect surface equipment with downhole instruments during oil and gas well logging and related operations.
A geophysical or wireline logging cable must provide not only electrical transmission but also mechanical support and protection during deployment into wells or other demanding environments.
The product specification includes single-core, 3-core, 4-core and 7-core configurations, with other configurations available according to application requirements.
Yes. High-temperature constructions are available with ratings up to approximately 260 °C, depending on insulation material and cable design.
Yes. The product is designed for oil and gas well logging, perforation, coring and downhole instrumentation applications.
Yes. Corrosion-resistant options include hydrogen-sulfide-resistant steel armor constructions.
Provide the required cable type, core number, cable diameter, length, working temperature, working depth, voltage, shielding requirements and application.