All Services
STech Engineering delivers 16-inch by 8-inch-deep tube-well boring service, test boring and services and piling precision-driven subsurface solutions tailored for groundwater extraction, geotechnical assessment, and structural foundation needs.
Deep Tube-Well Boring, Test & Service Boring and Piling Solutions
1. Deep Tube-Well Boring Service (16" × 8" Configuration)
Purpose & Application
Designed for sustainable groundwater extraction in agricultural irrigation,
industrial process water, municipal supply, and emergency drought relief
projects.
Technical Specifications
|
Parameter |
Specification |
|
Bore Diameter (Outer) |
16 inches (400 mm) – accommodates robust casing and gravel pack |
|
Inner Production Diameter |
8 inches (200 mm) – optimized for submersible pump installation & yield |
|
Typical Depth Range |
100 – 600+ feet (30 – 180+ meters), depending on aquifer geology |
|
Casing Material |
uPVC, HDPE, or mild steel with anti-corrosion coating |
|
Screen Type |
Continuous slot, louvered, or wire-wound stainless steel for aquifer-specific filtration |
|
Gravel Pack |
Calibrated silica gravel (2–4 mm) for enhanced permeability and sand control |
Methodology
- Rotary mud drilling or reverse circulation drilling for stable borehole formation
- Geophysical logging (resistivity, gamma, caliper) to identify productive zones
- Development via surging, air-lifting, or pumping to maximize well efficiency
- Yield testing (step-drawdown & constant-rate tests) to determine sustainable discharge
Deliverables
✅ As-built well
construction diagram
✅ Pump test
report with transmissivity & storosity calculations
✅ Water quality
sample analysis (physical, chemical, bacteriological)
✅ Operation
& maintenance manual
2. Test Boring & Service Boring (Same 16" × 8" Platform)
Purpose
Pre-construction subsurface investigation, aquifer characterization, well
rehabilitation, and regulatory compliance verification.
Service Components
🔹 Geotechnical
Test Boring
- Soil/rock sampling (SPT, core recovery) for foundation design
- In-situ testing: permeability, density, and shear strength assessment
- Borehole logging for stratigraphic correlation
🔹 Hydrogeological Test Boring
- Aquifer performance testing to estimate safe yield
- Water level monitoring & recharge analysis
- Contaminant transport modeling support
🔹 Well Service & Rehabilitation
- Mechanical/chemical cleaning of clogged screens
- Camera inspection for casing integrity
- Re-gravel packing or screen replacement
3. Piling Services for Foundation Support
Piling Types Offered
|
Pile Type |
Application |
Installation Method |
|
Bored Cast-in-Place Piles |
Heavy structures, high-load capacity |
Rotary drilling with temporary casing or slurry support |
|
Driven Precast Piles |
Rapid deployment, cohesive soils |
Diesel/hydraulic hammer or vibratory driver |
|
Micro-Piles (Mini-Piles) |
Restricted access, underpinning |
Small-diameter drilling with grout injection |
|
Sheet Piles |
Retaining walls, cofferdams |
Vibratory or impact driving of interlocking sections |
Engineering Integration
- Load testing (static/dynamic) to verify design capacity
- Integrity testing (PIT, sonic logging) for quality assurance
- Coordination with geotechnical reports to optimize pile depth and spacing
Quality & Safety Compliance
- Equipment calibrated per ISO 9001 standards
- Site safety protocols aligned with OSHA/local regulations
- Real-time monitoring of verticality, torque, and grout pressure