SURFACE CASING
VENT FLOW

  • Pump 2.0 m³
  • Abrasijet
  • 452 m TMD
  • BHT 15°C
  • Squeezed 0.9 m³ @ 150 L/min, Then 0.4 m³ @ 10 L/min
  • Pressured up to 18 MPa, held overnight
  • Minimal gas flow initially, confirmed killed after 3 months

SURFACE CASING
VENT FLOW

  • Pump 1.0 m³
  • 304 m TMD
  • BHT 13°C
  • Leak off rate 150 L/min @ 5 MPa
  • Formation took 0.8 m³
  • Pressure held 5 MPa

PERFORATION
PLUGGING

  • Pump 0.75 m³
  • 177.8 mm casing
  • 2160 m TMD
  • BHT 70°C
  • Allow Resin to sit and cure for 48 hours
  • Drilled out Resin
  • Tested to 14 MPa for 30 min, no pressure decrease
  • Perforation sealed, full welbore integrity achieved

SURFACE CASING
VENT FLOW

  • Pump 0.5 m³
  • Coupling Leak @ 454 m TMD
  • Squeezed 62 L @ 5 MPa
  • Pressure test to 6.9 MPa
  • Plug Held
  • Drill out Resin, full wellbore integrity achieved

CASING
COUPLING LEAK

  • Pump 0.5 m³
  • Coupling Leak @ 454 m TMD
  • Squeezed 62 L @ 5 MPa
  • Pressure test to 6.9 MPa
  • Plug Held
  • Drill out Resin, full wellbore integrity achieved

SURFACE CASING
VENT FLOW

  • Pump 0.5 m³
  • 263 m TMD
  • BHT 14°C
  • Squeezed 240 L
  • Pressure held at 4 MPa

SURFACE CASING
VENT FLOW

  • Pumped a total of 4.1 m³ ASAP
  • 870 m TMD
  • BHT 35°C
  • Leak off rate averaged 80 L/min @ 18 MPa
  • Squeezed away 2.9 m³
  • Pressure held at 12 MPa on the second squeeze

SALT CAVERN
REPAIR

  • Pumped two squeezes totalling 6.0 m³ ASAP
  • Squeeze into fractured shale cap for gas storage salt cavern
  • Pressure held at 3.5 MPa
  • Salt cavern repaired, no leakage of gas

PERFORATION PLUGGING

  • Pump 0.6 m³ ASAP into 3 Perforation intervals from 1181 – 1210 m
  • Squeezed a total of 0.2 m³ ASAP into perforations
  • Pressure held at 7 MPa
  • Drilled out 36 hours later