Pulsed-power drilling system with integrated power and communication coiled tubing conveyance

By generating power at the surface and transmitting it downhole through coiled tubing, the system addresses power delivery challenges in pulsed-power drilling, improving drilling efficiency and accuracy with integrated power-conditioning and pulse-generating circuits.

EP4520914B1Active Publication Date: 2025-10-15HALLIBURTON ENERGY SERVICES INC
3 Cites 0 Cited by

Patent Information

Application Number
EP2024185757
Authority / Receiving Office
EP · EP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2023-09-26
Filing Date
2024-07-01
Publication Date
2025-10-15
Estimated Expiration
2044-07-01

AI Technical Summary

Technical Problem

The challenges of delivering high power efficiently downhole for pulsed-power drilling systems, particularly in constrained environments, and the complexity of power conversion under size and spacing limitations, are significant, especially when using coiled tubing as a conveyance mechanism.

Method used

Power generation occurs at the surface and is transmitted downhole via coiled tubing, integrating a power-conditioning unit and pulse-generating circuit within the bottom-hole assembly (BHA) to deliver high-energy electrical pulses to the pulsed-power drill bit, utilizing various pulse-generating circuits and sensors for formation analysis.

Benefits of technology

This approach enables effective power delivery and formation analysis, enhancing drilling efficiency and accuracy by using coiled tubing conveyance, allowing for precise wellbore formation and resource extraction.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

Disclosed embodiments relate to a pulsed-power drilling system, in which a pulsed-power drill is conveyed downhole and operated via coiled tubing. The coiled tubing may be configured to simultaneously transmit power and drilling fluid downhole. For example, the coiled tubing may include a flexible hollow fluid tube configured to transport drilling fluid therein, and a flexible cable tube disposed within the fluid tube. The cable tube may have one or more cable disposed within protective tubing, protecting the cables from drilling fluid in the fluid tube. Methods of making and using such coiled tubing with pulsed-power drills are also disclosed.
Need to check novelty before this filing date? Find Prior Art