Cost breakdown and selection formula

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Initial investment

Drilling rig price: vehicle-mounted (￥800,000-1.5 million) vs crawler (￥2 million-4 million)

Accessory cost: drill rod ￥900/m (friction welding) vs ￥400/m (ordinary rod)

Operation and maintenance economics

Fuel efficiency: diesel drive ￥3.5/L (15L per hour) vs electric drive ￥0.8/kWh (40kW per hour)

Life of wearing parts: roller drill bit (￥8,000/piece, life 200h) vs diamond drill bit (￥30,000/piece, life 800h)

Calculation formula:

Total cost = equipment depreciation (20% per year) + (fuel cost + accessories cost) × annual working hours + Labor cost

Comparison of success and failure cases

Successful case: Southeast Asian farmland irrigation project

Requirement: 100 wells (depth 80m, sandy soil layer)

Selection strategy:

Domestic vehicle-mounted drilling rig (￥1 million) + ordinary drill rod (total cost saving ￥600,000)

Modular design (transfer time <2 hours)

Benefit: Single well cost ￥38,000 (industry average ￥50,000), profit margin increased by 25%

Failure case: Deep well accident in African mining area

Wrong decision: Selecting second-hand drilling rig (insufficient torque) to save ￥200,000

Loss chain:

Drilling accident (handling fee ￥150,000) → Construction delay (liquidated penalty ￥300,000) → Water pollution (compensation of ￥500,000)

Lessons: 30% torque redundancy must be reserved for hard rock formations

Investment model in emerging markets

Leasing model:

Monthly rent = equipment price × 3% (e.g., ￥1.5 million drilling rig monthly rent of ￥45,000)

A Nigerian company achieved zero down payment startup through leasing

Sharing platform:

GPS scheduling system (utilization rate increased from 40% to 75%)

Ethiopia's "Drilling Rig Uber" platform reduces user costs by 35%