GX-W1-2B1-2A1a-GB-8.0 ( 516”), 8.0mm, 2 SM+2 MM, outer copper conductor Optical Fiber
Applicable Well Types
1. Conventional Oil & Gas Wells
Adaptable Well Types: Deep to ultra-deep vertical wells (depth ≤ 8000m), medium-to-high deviation directional wells (≤ 65°), deep cased wells, deep open-hole wells, high-friction and high-abrasion wells.
Typical Applications: Deep & ultra-deep oil and gas exploration, production dynamic monitoring, downhole permanent monitoring, high-friction well logging, old well re-operation.
2. Unconventional Oil & Gas Wells
Adaptable Well Types: Long-radius horizontal wells (horizontal section ≤ 2000m), deep shale gas wells, deep coalbed methane wells, deep tight oil & gas development wells.
Typical Applications: Horizontal well fracturing monitoring, shale gas and CBM deep well monitoring, tight reservoir dynamic monitoring, permanent downhole monitoring system.
3. Other Exploration & Engineering Wells
Adaptable Well Types: Deep geothermal wells (≤ 150℃), deep hydrogeological wells, deep engineering monitoring wells, deep water injection wells, observation wells.
Typical Applications: Deep geothermal resource monitoring, deep hydrological detection, downhole monitoring in coal mines, water injection profile monitoring, deep engineering well monitoring.
Strictly Inapplicable Scenarios
1.Wells deeper than 8000m: exceeds mechanical bearing and safety margin.
2.Ultra-high temperature wells (> 150℃): causes insulation aging and performance failure.
3.Short-radius horizontal wells and sharp dogleg wells: not suitable for extreme bending.
4.Extremely severe H₂S/CO₂ corrosion environment without special anti-corrosion treatment.
5.Ultra-high pressure environment exceeding rated pressure grade.
Selection Reference
Parameter |
Specification |
Applicable Well Condition |
Typical Well Type |
Fiber & Power Configuration |
2 single-mode (B1) + 2 multi-mode (A1a) fibers, photoelectric composite structure (integrated optical signal transmission + power supply), GB standard, armored design |
DTS/DAS optical signal transmission + downhole tool power supply, bottomhole temperature ≤150℃, fiber reserve length >3‰, suitable for high-friction, high-tension downhole environment |
Ultra-deep conventional oil & gas wells, deep shale gas horizontal wells, deep coalbed methane wells |
Temperature Resistance |
Rated temperature 150℃ (302℉), FEP inner insulation layer, compatible with photoelectric composite structure, stable insulation and signal transmission under medium-temperature long-term operation |
Medium-temperature working conditions, bottomhole temperature ≤150℃, no ultra-high temperature (>150℃) environment, deep well long-term photoelectric dual transmission |
Ultra-deep oil & gas wells, deep geothermal wells (≤150℃), deep unconventional oil & gas wells |
Protection & Outer Diameter |
Outer diameter 8.0mm±0.10mm, high-strength armored structure, FEP outer encapsulation, excellent wear resistance, corrosion resistance and pressure resistance, suitable for harsh downhole environments |
Wellbore diameter ≥100mm, high friction, high wellbore wear, corrosive formation fluid (H₂S/CO₂/Cl⁻),deep downhole environment |
Ultra-deep cased wells, deep open-hole wells, high-friction oil & gas wells, deep coal mine underground monitoring wells |
Mechanical Performance |
Breaking strength 45kN, maximum working tension 22.5kN (1:2 safety factor), minimum bending diameter 900mm, excellent flexibility, torsion resistance and anti-wear performance,适配 deep well high-tension requirements |
Well depth ≤8000m, build-up section ≤65°, horizontal section ≤2000m (long radius), no sudden dogleg severity, high downhole friction and high-tension conditions |
Ultra-deep vertical wells (≤8000m), medium-to-high deviation directional wells, deep shale gas long-radius horizontal wells, deep coalbed methane development wells |
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