GX-GG-2B1-2A1a-3.2 ( 1/8”), 3.2mm, 2 SM+2 MM, Optical Fiber

1. Conventional Oil & Gas Wells

Adaptable Well Types: Medium-shallow vertical wells (depth ≤ 2500m), low-deviation directional wells (build-up section ≤ 45°), shallow cased wells (φ73mm/φ89mm thin-walled casing)

Typical Applications: Shallow oil & gas exploration wells, daily monitoring of conventional production wells, supplementary logging operations for small-diameter cased wells.

2. Unconventional Oil & Gas Wells

Adaptable Well Types: Shallow coalbed methane wells (depth ≤ 1500m), shallow shale gas vertical wells/short-horizontal-section horizontal wells (horizontal section ≤ 500m)

Typical Applications: Monitoring of shallow coalbed methane development wells, logging of shallow vertical wells in the exploration stage of shale gas.

3. Other Exploration & Engineering Wells

Adaptable Well Types: Shallow geothermal wells (bottomhole temperature ≤ 150℃, depth ≤ 2000m), hydrogeological exploration wells (small-diameter detection wells), small-diameter monitoring wells in underground coal mines

Typical Applications:Exploration and monitoring of medium-temperature geothermal resources, collection of groundwater hydrological data, monitoring of gas control in underground coal mines.

1. Deep/ultra-deep wells (depth ＞ 2500m): The 4kN breaking strength cannot withstand the total tension from the cable's own weight + tool weight, leading to high risk of cable breakage.

2.High-deviation wells (＞ 45°)/long-horizontal-section horizontal wells (horizontal section ＞ 500m): The 3.2mm small-diameter cable has limited torsion and friction resistance; it is prone to tangling and wear in high-deviation/long-horizontal sections, and the minimum bending diameter (320mm) cannot adapt to high build-up rate trajectories.

3.Ultra-high temperature wells (bottomhole temperature ＞ 150℃): Exceeding the rated temperature will cause aging of the cable protection layer and increased fiber signal attenuation, leading to monitoring failure.

4.Highly corrosive wells (high H₂S/CO₂ concentration): No special corrosion-resistant customization; the conventional 316L stainless steel tube cannot withstand highly corrosive media for a long time, making armor rusting likely.

5.Large-bore wells (wellbore diameter ＞ 150mm): The small-diameter cable is prone to swinging and colliding with the wellbore in large-bore wells, resulting in insufficient protection performance and no adaptation advantage.