China Suppliers Factory G1F46-3.18 1/8 Single-Conductor 316L/825 Armor Micro Logging Cable 18 AWG
Applicable Well Types
1 Small-Bore / Micro-Bore Wells Best Matching Core Advantage
Well Condition Features: Wellbore diameter ≤ 100mm, thin-walled casing wells (e.g., φ73mm / φ89mm casing), small-diameter open holes, and medium-shallow wells with depth ≤ 2000m.
2 Medium-Temperature Corrosive Oil & Gas Wells Temperature Resistance + Corrosion Resistance
Well Condition Features: Conventional / unconventional shallow oil & gas wells with bottomhole temperature of 150℃–200℃, containing corrosive media such as H₂S / CO₂ / Cl⁻, and well depth of 1000–3000m.
3 Medium-Shallow Conventional Vertical Wells / Low-Deviation Directional Wells
Well Condition Features: Vertical wells or low-deviation directional wells with build-up sections ≤ 45°, well depth ≤ 3000m, bottomhole temperature ≤ 200℃, and no complex trajectories with high torque or friction.
4 Shallow Geothermal Wells / Medium-Temperature Hydrogeological Wells
Well Condition Features: Medium-temperature shallow geothermal wells and hydrogeological exploration wells with bottomhole temperature of 120℃–200℃, well depth ≤ 2500m, and some intervals containing high-salinity formation water.
5 Shallow Coalbed Methane Wells / Underground Coal Mine Logging Wells
Well Condition Features: Shallow coalbed methane development wells (depth ≤ 1500m) and small-diameter detection wells in underground coal mines, with environments containing trace methane and highly corrosive formation water.
Strictly Inapplicable Scenarios
High-deviation wells (>60°) / long-horizontal-section horizontal wells (horizontal section >500m).
Deep / ultra-deep wells (depth >4000m).
Ultra-high temperature wells (bottomhole temperature >200℃).
Tool weight >80kg will quickly exceed the maximum recommended working tension (2.75kN), significantly reducing cable service life or causing immediate breakage.
Large-bore wells (wellbore diameter >200mm).
Selection Reference
| Parameter | Specification | Applicable Well Condition | Typical Well Type |
| Conductor Structure | 7×0.21mm tinned copper wire (≈23 AWG), total cross-sectional area ≈0.242mm² | Suitable for weak current signal transmission, no heavy current load, applicable to medium-temperature working environment | Small-bore wells, medium-shallow conventional oil & gas wells, geothermal exploration wells |
| Insulation Material | FEP (fluoroplastic), temperature rating 200℃ (392℉) | Bottomhole temperature ≤200℃, no ultra-high temperature environment, applicable to wells with corrosive formation fluid | Medium-temperature corrosive oil & gas wells, shallow coalbed methane wells, medium-temperature geothermal wells |
| Protection Structure | 316L / A825 stainless steel tube armoring, outer diameter 3.18mm ± 0.076mm | Small-bore (wellbore diameter ≤100mm), moderate wellbore wear, wells containing corrosive media (H₂S / CO₂ / Cl⁻) | Small-bore / micro-bore wells, thin-walled casing wells, underground coal mine logging wells |
| Mechanical Performance | Breaking strength 5.5kN, maximum working tension 2.75kN, minimum bending diameter 350mm | Well depth ≤3000m, build-up section ≤45° (conditionally ≤60°), no high torque or high friction working conditions | Medium-shallow vertical wells, low-deviation directional wells, long-radius horizontal wells with short horizontal section (≤500m) |
Frequently Asked Questions
What is the maximum wellbore diameter this cable is designed for?
Can this cable be used in wells containing H₂S or CO₂ corrosive media?
What is the maximum bottomhole temperature this cable can withstand?
Is this cable suitable for horizontal wells or high-deviation directional wells?
What is the maximum tool weight recommended when using this cable?
Is this cable applicable for underground coal mine logging and coalbed methane wells?