Project Managment: Drilling

Assumptions:

1. Drill rate per rig: 10 meters/day (varies by conditions and equipment).
2. Workdays/week: 6 days (1 day for maintenance/rest).
3. Mobilization/Demobilization: 3 days total.
4. Project Management and Reporting: 5 days post-drilling.
5. Daily Rig Cost: $2,000/rig (including crew, equipment, fuel, and maintenance).
6. Additional Costs: Mobilization/Demobilization: $5,000. Geological supervision: $1,000/day. Consumables (e.g., drill rods, bits, etc.): $30/m drilled. Contingency: 10% of total project cost.

Scenarios:

Scenario 1: Normal Conditions

• Drill Rate: 10 meters/day per rig.
• Total Meters to Drill: 30?holes×30?m/hole=900?m.
• Duration per Rig: 900?m10?m/day=90?days?for?1?rig

Scenario 2: Challenging Conditions

• Drill Rate: 7 meters/day per rig.
• Duration: 900?m7?m/day?per?rig×2?rigs=64.3?days

Scenario 3: Accelerated Timeline (Overtime).

• Drill Rate: 12 meters/day per rig (with 2-shift system).
• Duration: 900?m12?m/day?per?rig×2?rigs=37.5?days.

Budget Breakdown

Cost Item Unit Rate Quantity Total Cost (USD)Mobilization/Demobilization$5,0001$5,000Rig Cost (Scenario 1)$2,000/day/rig45 days × 2 rigs$180,000Rig Cost (Scenario 2)$2,000/day/rig65 days × 2 rigs$260,000Rig Cost (Scenario 3)$2,000/day/rig38 days × 2 rigs$152,000Geological Supervision$1,000/day Duration (varies)$45,000 - $65,000 Consumables$30/m900 m$27,000Reporting and Management$1,000/day5 days$5,000Contingency (10%)10% of total cost-Variable

Project Schedule

Task Duration (Days) (Scenario 1)

Duration (Days) (Scenario 2 )

Duration (Days) (Scenario 3)

Thats a story for another day.