GEOTHERMAL BLOWOUT & CONTROL EMERGENCY SERVICE

In 1995 , GPC was awarded by geothermal district heating operators an ad-hoc emergency/rescue contractaimed at controling well blowouts and avoiding subsequent damage , owing to a sensitive , densely populated , urban environment, a hot fluid (65 to 80°C) and the presence of flamable (methane) and toxic (hydrogene sulphide) solution gases. This preventing policy proved effective with five sucessful operations recorded to date.

 

SOFT ACIDIZING

Concept : long duration injection from well head of a strongly diluted acid solution (=<0,5%).
Aim : dissolving of scale peaks affecting casing roughness and subsequent friction losses.
Outcome : Achievement of substantial productivity/injectivity gains at costs lower than those of conventional acid jobs.

 

THERMOCHEMICAL MONITORING

  • Fluid sampling.
  • Laboratory analysis.
  • Processing/recommendation.

 

CORROSION/SCALING MONITORING & MEASUREMENTS AND PREVENTING

  • Measurements.
  • Inhibitive traitement.
  • Monitoring.

 

WASTE PROCESSING

Processing of solution gases.

 

COILED TUBING

  • Cimenting.
  • Acidizing.
  • Injection well restoration.

 

ENVIRONMENTAL IMPACT: SURVEY & MONITORING

  • Water quality measurements.
  • Pipe corrosion.
  • Soil contamination assessments.
  • Air quality control.
  • Noise measurement and monitoring.