GX-GG-2B1-2A1a-B-11×22 CHT ( 0.433*0.866”), 11×22 mm, 2 SM+2 MM, 316L/A825 Armor Optical Fiber
Applicable Well Types
1. Conventional Oil & Gas Wells
Adaptable Well Types: Deep vertical wells (depth ≤ 8000m), medium-to-high deviation directional wells (≤ 65°), deep cased wells, deep open-hole wells, high-friction and high-abrasion deep wells.
Typical Applications: Deep oil and gas exploration (≤8000m), deep well production dynamic monitoring, high-temperature deep well logging, high-friction deep well operation, permanent downhole monitoring.
2. Unconventional Oil & Gas Wells
Adaptable Well Types: Long-radius horizontal wells (horizontal section ≤ 2000m), deep shale gas wells (≤8000m), deep coalbed methane wells, deep tight oil & gas wells.
Typical Applications: Deep shale gas horizontal well (≤8000m) fracturing monitoring, deep CBM well production monitoring, tight reservoir dynamic monitoring, permanent downhole monitoring.
3. Other Exploration & Engineering Wells
Adaptable Well Types: Medium-deep geothermal wells (≤ 150℃), deep hydrogeological wells (≤8000m), deep engineering monitoring wells, deep water injection wells, coal mine underground deep monitoring wells.
Typical Applications: Medium-temperature geothermal resource monitoring, deep hydrological detection (≤8000m), deep well gas monitoring in coal mines, water injection profile monitoring, deep engineering well monitoring.
Strictly Inapplicable Scenarios
1.Wells deeper than 8000m: exceeds the mechanical safety margin, 70kN breaking strength cannot bear the total tension of cable weight + logging tool weight, high risk of breakage.
2.Ultra-high temperature wells (> 150℃): causes insulation aging and performance failure, leading to signal attenuation.
3.Short-radius horizontal wells and sharp dogleg wells: not suitable for extreme bending, easy to damage the armored structure and fiber core.
4.Extremely severe H₂S/CO₂ corrosion environment without special anti-corrosion treatment: long-term corrosion will damage the cable structure and affect service life.
5.Ultra-high pressure environment exceeding the rated pressure grade: may cause seal failure and structural damage.
Selection Reference
Parameter |
Specification |
Applicable Well Condition |
Typical Well Type |
Fiber Configuration |
2 single-mode (B1) + 2 multi-mode (A1a) fibers, 11×22mm flat rectangular cross-section, CHT standard, high-strength armored structure |
DTS/DAS optical signal transmission, bottomhole temperature ≤150℃, fiber reserve length >3‰, suitable for deep, high-friction downhole environment (≤8000m), excellent stability in wellbores |
Deep conventional oil & gas wells (≤8000m), deep shale gas horizontal wells, deep coalbed methane wells |
Temperature Resistance |
Rated temperature 150℃ (302℉), high-temperature resistant insulation layer, stable performance under 150℃ long-term operation, compatible with flat rectangular cross-section structure |
Medium-temperature downhole environment, bottomhole temperature ≤150℃, no ultra-high temperature (>150℃) environment,deep well (≤8000m) long-term monitoring |
Deep oil & gas wells (≤8000m), medium-temperature geothermal wells (≤150℃), deep unconventional oil & gas wells |
Protection & Cross-Section |
11×22mm flat rectangular cross-section (excellent stability, anti-tangling, anti-rolling), high-strength armor, corrosion-resistant encapsulation, excellent wear resistance and pressure resistance |
Wellbore diameter ≥110mm, high friction, high wellbore wear, corrosive formation fluid (H₂S/CO₂/Cl⁻), rated pressure ≤140MPa, deep downhole environment (≤8000m) |
Deep cased wells (≤8000m), deep open-hole wells, high-friction deep wells, deep coal mine underground monitoring wells |
Mechanical Performance |
Breaking strength 70kN, maximum working tension 35kN (1:2 safety factor), excellent flexibility, torsion resistance and anti-wear performance, flat rectangular section enhances wellbore stability, fully deep well (≤8000m) 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 |
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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