H&P breathes new life into existing diesel engines with dual-fuel gas-blending system
What happened
H&P has rolled out Caterpillar’s DGB Gen2 dual-fuel retrofit on multiple rigs, moving the system from trial to operational use. The kit has been installed on 50 engines across 12 rigs and can displace a large share of diesel in operation, making retrofit procurement, parts, and gas sourcing operationally real. Watch vendor lead times, spare-parts availability, and crew training needs as deployments scale
Buyer takeaway
Treat retrofit kits as an available sourcing option now; procurement should secure parts/installation terms and protect delivery windows
Cost / money
Shifts spend from diesel purchases to gas supply contracts and retrofit CAPEX; net operating cost effects depend on fuel pricing and runtime displacement (article data is directional but shows meaningful diesel displacement)
Supplier / commercial
Kit OEMs and integrators will gain leverage; negotiate price protections, spare-parts agreements, and upgrade/retrofit options to retain leverage
Safety / operations
Integration affects engine combustion and load behaviour; require installation acceptance tests, updated maintenance procedures, and crew training to preserve uptime
What to watch
Watch for shortening quote validity and lead-time premiums from kit suppliers as adoption grows; validate vendor capacity before committing
Key facts
- Installed on 50 engines across 12 rigs
- Gen2 can displace as much as 85% of diesel in some conditions
- Field trial recorded a peak displacement rate with large single-rig diesel savings
Source excerpts
By retrofitting existing Cat 3512C Tier 2 diesel engines with the dual-fuel gas-blending system, those engines can now operate on a mix of diesel and natural gas. This allows H&P to use gas while preserving the redundancy of diesel
The kit dynamically blends natural gas into the diesel engine’s intake, displacing as much as 85% of diesel fuel with natural gas
” The DGB kit also comes with Caterpillar’s ADEM A6 engine control module, which allows drillers to optimize combustion in real time
