GT-04 · Aerated Drilling Control

Hole depth 2,846 m MD · Formation: Andesite fractured zone
CRITICAL · Near-total loss confirmed

Return efficiency fell to 18%. Recommended: reduce liquid rate, increase aeration, verify standpipe trend.

2.846 mMD · +6 m/hr
11.8 m/hTarget 14.0
142 bar+7 bar / 10 min
18%Critical threshold <25%
0.91 sgWindow 0.86–0.98
72%Recommended 75–80%

Live drilling response

Returns ROP SPP
10050011:2011:3011:4011:50LOSS ZONE

Mode comparison

Hydraulics + risk score
ModeLiquid flowAir injectionECDRiskScore
Conventional489 GPM0 scfm1.12High41
Aerated base349 GPM212 scfm0.96Med76
Aerated optimized285 GPM318 scfm0.91Low91

Parameter recommendations

Model confidence 88%
01
Liquid flow rate

Reduce gradually over 3 min

285 GPM
02
Air injection

Standard flow; ramp in stages

318 scfm
03
Rotary speed

Protect hole cleaning margin

62 rpm

Alarm status

2 active

Event timeline

Current shift
Return efficiency drift

Below 65% for 90 seconds

Hole cleaning deterioration

Transport ratio below operating envelope

Critical zone detected

Loss signature correlated with fracture response

Mode switch advisory

Foam transition package generated