ExaCT direction and inclination (D&I) module and electrical multilateral module (eMLT)

Real-time D&I mapping and electrical multilateral entry for efficient well intervention

The combined direction and inclination (D&I) module and electrical multilateral module (eMLT), part of the ExaCT™ electrical downhole CT control system, deliver real-time wellbore mapping and precise electrical multilateral entry in a single CT run, enabling faster, more efficient well intervention.

By integrating real-time D&I mapping with on-command electrical actuation, the system provides closed-loop navigation and control, allowing operators to accurately map well trajectory and immediately execute targeted lateral entry without trial and error.

Unlike conventional approaches that rely on hydraulic activation, pressure cycling, or multiple runs, this solution enables instant, selective downhole tool control, significantly reducing operational complexity in extended-reach and multilateral wells.

As part of the ExaCT access service, the combined modules streamline intervention workflows by unifying mapping, access, and execution into a single system, improving consistency and reliability across stimulation and logging operations.

Proven performance in the field:

• Reduce intervention from one CT run per lateral to a single run for all laterals
• Achieve 30–40% faster execution time
• Lower operational costs by 15–20%
• Enable first-attempt lateral entry success in complex wells
• Operate reliably in high-temperature environments exceeding 300 degF (150 degC)

By eliminating uncertainty in multilateral navigation and reducing the need for repeated interventions, the system improves operational efficiency, reduces risk, and increases overall intervention success rates in complex well environments.

• Any environment
• Onshore and offshore multilateral wells requiring stimulation treatments
• Multilateral well access, mapping, and reentry
• Extended-reach CT interventions
• Lateral entry confirmation and navigation
• Multilateral stimulation and logging workflows
• Complex well geometries requiring precise positioning and control

• Enables accurate mapping and controlled lateral entry in a single run
• Eliminates uncertainty in multilateral navigation and access
• Improves success rate of lateral entry on first attempt 
• Reduces operational time and cost by removing multiple intervention runs 
• Supports integrated workflows combining access, stimulation, and logging

• Real-time measurement of direction, inclination, and well trajectory
• Electrically controlled multilateral entry mechanism 
• Full integration with ExaCT system and ExaCT multicycle system for actuated response (MSAR) 
• Compatible with CT tractor, high-pressure jetting, and logging tools 
• Operates without reliance on pressure cycling or fluid pumping 
• Continuous downhole telemetry (pressure, gamma, CCL, tension, and compression) 
• Slim BHA-compatible for restricted IDs (approximately 2.4 in) 
• Designed for operation in high-temperature and corrosive environments

The ExaCT D&I module and eMLT function as a fully integrated system, combining real-time directional telemetry with electrically controlled multilateral entry to enable precise, efficient CT intervention.

The D&I module continuously measures wellbore direction and inclination, transmitting real-time data to surface through the real-time downhole CT electrical and telemetry system of ACTive™ real-time downhole coiled tubing services. This provides operators with accurate, continuous insight into well trajectory, even in high-deviation and horizontal wells.

Using this live data, the eMLT executes on-command electrical actuation, guiding the BHA into the selected lateral with precision. Unlike conventional systems, this process does not require hydraulic activation, pressure cycling, or fluid pumping, enabling faster and more reliable multilateral entry. This closed-loop approach allows operators to map, confirm, and access laterals in real time, ensuring accurate placement and consistent performance in complex well geometries.

Key operational capabilities:

• Real-time navigation in high-deviation and horizontal wells (up to 90°)
• Faster lateral mapping, completed in minutes rather than hours
• Consistent first-pass lateral entry in complex multilateral wells
• Support for stimulation flow rates up to approximately 3.5 bbl/min

By combining real-time measurements, electrical telemetry, and precise downhole tool control, the system enables more efficient, predictable, and high-performance multilateral well interventions.