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Ranging While Drilling · Coiled Tubing

CTRWD™

Real-time magnetic ranging inside a fully pressure-contained coiled-tubing drilling assembly.

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How it works

CTRWD embeds active magnetic excitation in a coiled-tubing BHA, turning ranging from a discrete wireline intervention into an integrated drilling function, with full pressure-control integrity maintained throughout convergence and intercept.

Designed for proximity-dependent operations where positional uncertainty and consequence are elevated, CTRWD delivers deterministic distance and directional updates to the target while the well stays fully pressure-contained.

Excitation, detection and telemetry are integrated within the coiled-tubing BHA, so ranging continues with no dedicated trips and no wireline entry into a live well, sustaining drilling momentum through convergence.

Higher injected current (~2× wireline) and increased electrode surface area strengthen casing excitation and improve galvanic coupling, delivering a stable, high-fidelity magnetic response in oil-based, water-based and total-loss mud conditions.

Capabilities
Fully integrated coiled-tubing drilling assembly
No dedicated ranging trips, no wireline entry into live wells
Embedded all-angle gyro compatibility
Reliable in OBM, WBM and total-loss conditions
Software auto-generates a new intercept well plan after every ranging measurement
Fit-for-purpose applications
  • ·Blowout & relief-well intercept
  • ·Legacy well reconstruction
  • ·Fish bypass & re-entry
  • ·High-build convergence geometries
  • ·Solution mining intercepts
  • ·Vertical water-well intercepts
  • ·Limited surface-access operations
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