High Pressure Coalbed Methane Well Drilling Rig: CMD180SD for Shanxi Blue Flame Group
Executive Summary
Shanxi Blue Flame Group, a leading Chinese coalbed methane (CBM) developer, needed large-diameter, deep production wells drilled through pressured coal seams. With reservoirs buried at 800–1,200 m, high formation pressure and a real blowout risk, the project set the bar high for torque reserve, well-control (BOP) capability and crew safety. The CORTECH® CMD180SD electric top-drive drilling rig — a high-torque, high-speed rig fitted with a dedicated blowout prevention system — was deployed to match the high-pressure conditions. Across the program it completed 5 CBM wells, with the deepest reaching 1,280 m, achieving stable gas output of more than 12,000 m³ per well per day, supporting scaled CBM development and energy-structure transition in Shanxi.
Project Background & Challenge
Blue Flame's production strategy required stepping up from pilot holes to large-diameter, deep CBM wells. The downhole conditions left no room for compromise:
- Deep, pressured reservoirs: seams at 800–1,200 m carried high formation pressure, raising the likelihood of gas kicks and blowouts.
- Torque demand at depth: deep, large-diameter strings need strong rotational torque reserve to stay on bottom without stalling.
- Safety-critical well control: the operator required a rig purpose-equipped to mount and operate a dedicated blowout prevention system, not a retrofit.
In short, the project demanded a rig that combined deep-hole torque, high-speed drilling and certified well-control readiness in one package.
Our Solution
The CORTECH® CMD180SD electric top-drive drilling rig was selected for its high torque, high-speed performance and integrated well-control design:
- High-torque, high-speed top drive: the rig's powerful top drive delivered the rotational torque reserve needed for deep, large-diameter CBM holes while maintaining efficient drilling speeds.
- Dedicated blowout prevention system: a purpose-equipped BOP setup matched the high-pressure formation conditions, giving crews a tested well-control barrier against gas kicks.
- Elevated BOP-ready substructure: built on the CMD180 platform's raised drilling floor, the rig provides clear overhead space to mount pressure-rated BOPs and well-control manifolds safely at the collar. *(SD-specific electric powertrain differences versus the base CMD180: \[TODO].)*
Key Results
| Metric | Value |
|---|---|
| CBM wells completed | 5 |
| Deepest well | 1,280 m |
| Reservoir depth range | 800 – 1,200 m |
| Daily gas output per well | > 12,000 m³ |
| Gas performance | Stable, sustained production |
| Well control | Dedicated blowout prevention system |
| Regional impact | Supports scaled Shanxi CBM development |
For the full technical specifications of the CORTECH® CMD180SD, see the CMD180SD product page.
Customer Value & ROI
- Safe through pressured zones: a dedicated BOP system let the crew drill high-pressure 800–1,200 m seams without exposing the site to blowout risk — protecting both the asset and the crew.
- Predictable production: 5 wells at up to 1,280 m each delivered stable output above 12,000 m³/day per well, converting drilling spend into dependable reserves.
- Scale-ready platform: the rig's modular, automated handling supports the multi-well cadence that scaled CBM development requires.
- Regional energy impact: the program underpins local CBM-based energy transition, aligning the operator with national low-carbon goals.
FAQ
What rig handles high-pressure coalbed methane wells safely?
A high-torque, high-speed top-drive rig fitted with a dedicated blowout prevention system. The CMD180SD delivered 5 CBM wells to 1,280 m through pressured 800–1,200 m seams with dedicated well control.
Why is a dedicated blowout preventer system required for CBM drilling?
Deep CBM reservoirs carry high formation pressure and a real risk of gas kicks. A purpose-equipped BOP — mounted on an elevated BOP-ready substructure — provides a tested barrier, which is why the CMD180SD was specified for this project.
How much gas can a deep CBM production well yield per day?
On this Shanxi program, each of the 5 wells (deepest 1,280 m) produced more than 12,000 m³ of gas per day, with stable sustained output.
What depth range applies to high-pressure CBM wells?
In this project the pressured reservoirs lay at 800–1,200 m, and the deepest completed well reached 1,280 m — the depth band where torque reserve and BOP capability become decisive.
Internal Links
- Rig product page
- Application hub
- Related case
- Related case
- Related case
- FAQ knowledge base