GX-W-2B1-2A1a-GB-5.6 ( 732”), 8.0mm, 2 SM+2 MM Optical Fiber
Applicable Well Types
1. Conventional Oil & Gas Wells
Adaptable Well Types: Medium-deep vertical wells (depth ≤ 6000m), medium-deviation directional wells (≤ 60°), cased wells, open-hole wells, high friction wells, abrasive wells.
Typical Applications: Deep oil & gas exploration wells, production dynamic monitoring, deep open-hole logging, high-friction well operations, old well re-logging.
2. Unconventional Oil & Gas Wells
Adaptable Well Types: Shale gas long-radius horizontal wells (horizontal section ≤ 1500m), coalbed methane (CBM) wells, tight oil & gas wells, deviated development wells.
Typical Applications: Shale gas horizontal well fracturing monitoring, CBM well production monitoring, tight reservoir dynamic monitoring, permanent downhole monitoring.
3. Other Exploration & Engineering Wells
Adaptable Well Types: Geothermal wells (≤ 150℃), hydrogeological exploration wells, coal mine underground monitoring wells, water injection wells, observation wells.
Typical Applications: Geothermal resource monitoring, groundwater detection, coal mine gas monitoring, water injection profile monitoring.
Strictly Inapplicable Scenarios
1.Wells deeper than 6000m: exceeds mechanical bearing limit.
2.Ultra-high temperature wells (> 150℃): causes insulation aging and signal attenuation.
3.High-deviation wells (> 60°) and short-radius horizontal wells: unsuitable for sharp bending.
4.Extremely severe corrosive environments with ultra-high H₂S/CO₂ without special corrosion treatment.
Selection Reference
Parameter |
Specification |
Applicable Well Condition |
Typical Well Type |
Fiber Configuration |
2 single-mode (B1) + 2 multi-mode (A1a), GB standard fiber unit, double armored structure |
DTS/DAS optical signal transmission, bottomhole temperature ≤150℃, no heavy mechanical load, fiber reserve length >3‰, suitable for high-friction downhole environment |
Medium-deep conventional oil & gas wells, shale gas horizontal wells, coalbed methane wells |
Temperature Resistance |
Rated temperature 150℃ (302℉), FEP inner insulation layer, compatible with double armored structure, stable performance under medium-temperature long-term operation |
Medium-temperature working conditions, bottomhole temperature ≤150℃, no ultra-high temperature (>150℃) environment, long-term downhole monitoring |
Medium-deep oil & gas wells, geothermal wells (≤150℃), unconventional oil & gas wells |
Protection & Outer Diameter |
Outer diameter 5.6mm±0.10mm, double armored (316L stainless steel), FEP outer encapsulation, high wear resistance, corrosion resistance and pressure resistance |
Wellbore diameter ≥80mm, high friction, moderate wellbore wear, corrosive formation fluid (H₂S/CO₂/Cl⁻), rated pressure ≤140MPa |
Deep cased wells, open-hole wells, high-friction oil & gas wells, coal mine underground monitoring wells |
Mechanical Performance |
Breaking strength 25kN, maximum working tension 12.5kN, minimum bending diameter 700mm, excellent flexibility, torsion resistance and anti-wear performance (double armor advantage) |
Well depth ≤6000m, build-up section ≤60°, horizontal section ≤1200m (long radius), no sudden dogleg severity, high downhole friction and tension conditions |
Deep vertical wells (≤6000m), medium-deviation directional wells, shale gas long-radius horizontal wells, coalbed methane development wells |
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