In oil/gas transmission and water conservancy projects, river crossing drilling solutions have become the preferred method for cross-river pipeline construction due to their minimal ecological impact and high safety standards. This trenchless technology enables precise pipeline installation without disrupting waterway navigation or damaging riverbed structures.

1. Key Advantages of River Crossing Drilling Solutions

(1) Ecological protection: Eliminates riverbed excavation, preserving aquatic habitats

(2) Construction safety: Maintains normal waterway traffic and flood control functions

(3) Strong adaptability: Handles various riverbed conditions (silt, sand, gravel, etc.)

(4) Cost efficiency: Reduces project costs by over 40% compared to cofferdam methods

2. Core Technologies for Professional River Crossing Drilling Solutions

(1) Guidance systems: Uses MWD (Measurement While Drilling) for ±1m accuracy

(2) Mud engineering: Customized slurry formulas prevent borehole collapse

(3) Step reaming: 3-5 stage reaming based on pipe diameter requirements

(4) Pipe protection: Enhanced anti-corrosion coatings for underwater environments

3. Technical Specifications for River Crossing Drilling Solutions

(1) Bore diameter: Typically 1.2-1.5 times the pipe diameter

(2) Crossing length: Up to 1,500m (equipment dependent)

(3) Tolerance: ≤2% depth deviation, ≤1% horizontal deviation

(4) Special requirements: Emergency sealing systems and real-time riverbed monitoring

4. Hengwang HWF135 HDD Rig Application Cases

As specialized equipment for river crossing drilling solutions, the HWF135 has successfully completed:

(1) Mekong River tributary crossing: 420m installation of 508mm oil pipeline

(2) Yangtze River embankment project: φ325mm water pipe installation around flood control structures

(3) Southeast Asia mangrove reserv: Zero-pollution construction in ecologically sensitive areas