China Suppliers Factory G1F46-3.18 1/8 Single-Conductor 316L/825 Armor Micro Logging Cable 18 AWG
Applicable Well Types
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.
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.
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.
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.
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 (FAQ)
This cable is recommended for wells with a depth of up to 3000m. For medium-shallow conventional vertical wells and low-deviation directional wells, the maximum working depth is ≤3000m. For shallow coalbed methane wells, the recommended depth is ≤1500m, and for geothermal or hydrogeological wells, ≤2500m.
Yes. The 316L/A825 stainless steel tube armoring and FEP fluoroplastic insulation provide excellent resistance to corrosive media including H₂S, CO₂, and Cl⁻. It is well-suited for medium-temperature corrosive oil & gas wells and formations with high-salinity water.
The maximum recommended working tension is 2.75kN. Tool weights exceeding 80kg will quickly surpass this limit, which can significantly reduce cable service life or cause immediate breakage. It is essential to verify tool weight before deployment.
This cable is suitable for low-deviation directional wells with build-up sections ≤45° (conditionally up to ≤60°) and long-radius horizontal wells with short horizontal sections of ≤500m. It is strictly not recommended for high-deviation wells (>60°) or long-horizontal-section wells with horizontal sections exceeding 500m.
This cable is optimized for small-bore and micro-bore wells with wellbore diameters ≤100mm, including thin-walled casing wells such as φ73mm and φ89mm casing. It is not suitable for large-bore wells with wellbore diameters exceeding 200mm.
The FEP fluoroplastic insulation has a temperature rating of 200℃ (392℉). This cable is applicable for bottomhole temperatures up to 200℃, covering medium-temperature corrosive wells, geothermal wells, and coalbed methane wells. It is strictly not suitable for ultra-high temperature wells where bottomhole temperature exceeds 200℃.