HPT (Laser Induced Fluorescence)

Hydraulic Profiling Tool (HPT)

Hydraulic Profiling Tool (HPT) has become a fundamental instrument for investigating soil and unconsolidated formations.

1. Direct Push Deployment:
The HPT is advanced into the ground using a direct push method.

2. Clean Water Injection:
As the probe stabilizes underground, clean water is injected into the formation through a shielded port on the probe’s sidewall.

3. Downhole Measurements:

• Pressure: Downhole pressure sensors measure the injection pressure required to infiltrate the formation.

• Flow Rate: Downhole flowmeters monitor water flow velocity.

• Electrical Conductivity (EC): An EC array at the probe tip provides bulk formation EC logging.

  
  

• Real-time recording and display of EC profiles, high-pressure readings, and flow rates during probe advancement.

• Data enables researchers to evaluate vertical variations in relative formation permeability.

• Conducted at selected depths in coarse-grained materials to determine pressure gradients in saturated formations.

  
  

Applications

Measures groundwater or channel water flow dynamics to generate hydraulic profiles, revealing:

• Flow characteristics

• Soil type characterization