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Explore the key challenges in modern offshore drilling and see how Enhanced Drilling’s solutions help operators improve performance, reduce risk, and enhance well integrity.

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Top-Hole Challenges
Creating a stable foundation
Shallow Flow Hazards
Cuttings Build-Up
Cementing Top-Holes
WellBore Instability
Extending / Removing Sections
Environmental Regulatory
Meeting targets while reducing footprint
Environmentally Sensitive Areas
Reduce Carbon Footprint
Reduce Logistic Demand
Reduce Rig Time
Pressure Management
Staying within the window
Narrow Operating Windows
Depletion
Lost Circulation
Influx Management
Cementing
Well Completion
Finishing strong – safely and productively
Managed Pressure Gravel Packing
Higher Production
Deepwater Ultra-Deepwater
More depth. More risk. More need for control
Complex Well Architecture
Influx Management
Narrow Operating Windows
CML and EC-Drill® for Deepwater Wells

Precision Tools That Enable Safer, Smarter Wells

Our technologies are categorized by drilling phase – helping you find the right solution faster.

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Well Diagram - Top Hole Section
Top-Hole Section
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Technologies
Help you drill faster, cleaner, and safer from day one — while protecting the environment and reducing risk in the most fragile part of the well.
RMR® – Riserless Mud Recovery
CTS – Cuttings Transportation System
MPC® – Managed Pressure Cementing
Well Diagram - Intermediate Section
Intermediate section
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Technologies
Helps you drill deeper with fewer casing strings, improved stability, and better safety — even in narrow pressure windows.
EC-Drill® Dual MPD
EC-Drill®
EC-Monitor™
Well Diagram - Reservoir & Completion Section
Reservoir and Completion
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Technologies
Helps maximize production rates, protect the reservoir, and simplify completion — even in depleted zones or challenging formations.
EC-Drill® Dual MPD
EC-Drill®
EC-Monitor™

Complex Well Architecture

Introducing the Dual Gradient Effect – simplify your well plan and reduce rig time.

Narrow Windows and Mismatching Hydrostatic Profile

Deepwater wells commonly have narrow operating windows for several, or all sections. Making matters worse the hydrostatic profile starting from RKB does not match the operating window starting from seabed. Combined they tend to force complex well architecture with frequent casings.

 

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Aligning Your Pressure Profile With the Operating Window

Lower the fluid level in the riser and move the top of the hydrostatic profile closer to the seabed. The resulting profile, referred to as the Dual Gradient effect with a column of air above the fluid, has lower pressures at shallow depths and follows the trend of the operating window.

Merging Sections for a Simpler Design

Combining sections in deepwater operations with the Dual Gradient effect has become the default approach for all Controlled Mud Level drilling. Two sections are drilled in one go, creating simpler well architecture.

EC-Drill® & EC-Drill® Dual MPD

Controlled Mud Level – The Natural way

The Dual Gradient effect reduces well construction cost and rig time – and makes planning deepwater wells that much easier.

Key Benefits:

  • Dual Gradient for combining sections
  • Easy and straightforward drilling, tripping and cementing
  • Simplified well planning
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Related Case Studies

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Looking to Streamline Complex Well Architecture and Improve Efficiency?

Looking to Streamline Complex Well Architecture and Improve Efficiency?

Contact our experts or explore technologies that enable simpler, faster, and more cost-effective deepwater drilling.
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