Downhole communication system provides real-time sensing and logging data

Posted on 12 March 2014

http://www.drillingcontractor.org/wp-content/uploads/2014/03/video-jlbhi-03042014.flv

Lance Portman, Vice President of Coiled Tubing at Baker Hughes, discusses the challenges of coiled tubing applications and industry’s solutions, such as downhole telemetry systems and visualization software.

By Joanne Liou, associate editor

When it comes to coiled tubing, industry relies heavily on modeling to determine what is going on downhole. With real-time data acquisition, uncertainty is minimized with better understanding of downhole conditions, and decisions can be made on the fly to alter a particular application. In 2009, Baker Hughes commercialized its 2 7/8-in. TeleCoil Intelligent Coiled Tubing System for real-time data and has recently released the 2 1/8- and 3 ½-in. versions to address completions of various sizes. 

The TeleCoil Downhole Communication system delivers bottomhole and tool differential pressure information in real time to reduce uncertainty while enabling continuous optimization of applications, such as milling, stimulation, cleanout and gas lifting.

The TeleCoil Intelligent Coiled Tubing System delivers bottomhole and tool differential pressure information in real time to reduce uncertainty while enabling continuous optimization of applications, such as milling, stimulation, cleanout and gas lifting.

The system consists of a non-intrusive conductor, surface hardware and software, and a bottomhole assembly (BHA) integrated with sensors. The corrosion-resistant communication conductor is 1/8-in. in diameter and transmits real-time data without affecting flow rates or increasing reel weight. The sensor BHA combines a motorhead assembly that incorporates the conductor and a pressure, temperature and casing collar locator package.

One of the benefits of the system is reducing downtime, especially offshore. “Having that insurance offshore would be a focal point,” David Poirier, TeleCoil Product Manager, said. “Recently we’ve been able to perform a job that was four days shorter than planned. If you look at a semisubmersible costing you about half a million dollars a day, a client can be quite happy with that type of result.” 

The TeleCoil system is anchored at surface at the coiled-tubing drum. The BHA is then attached to the end of the coiled tubing, where it sends packets of information to surface, Mr Poirier explained. “We’re trying to go away from the seven-conductor system and rely on a single conductor with more capability of sending multiple packets of data,” he continued.

The sensor BHA also is interchangeable with a logging adapter assembly. “The real-time sensing and the real-time logging is really two in one. With the BHA we have for TeleCoil, we can log differential pressures so we know what the conditions are downhole, and with the casing collar locator, we know where we are in the hole accurately to make sure the application is performed in the desired depth. We can log temperature and will soon be coming out with more sensor capabilities,” Mr Poirier noted. “The logging adapter opens the opportunity to run all industrywide logging tools.”

In February, Baker Hughes completed field trials for the 2 1/8-in. version of TeleCoil offshore Brazil, and the technology is now commercially available.

Leave a Reply

*

FEATURED MICROSITES


Recent Drilling News

  • 22 April 2015

    Transocean appoints Jeremy D. Thigpen as President & CEO

    Transocean has announced that Jeremy D. Thigpen has been named President and Chief Executive Officer effective 22 April 2015. Mr Thigpen succeeds Ian C. Strachan, Interim...

  • 22 April 2015

    Noted broadcast journalist Eithne Treanor to MC IADC World Drilling 2015, Rome, 17-18 June

    IADC is pleased to announce that noted industry broadcast journalist and professional moderator Eithne Treanor will serve as master of ceremonies...

  • 22 April 2015

    UBO & MPD Committee drives safe practices, while survey indicates industry moving toward acceptance

    The IADC Underbalanced Operations & Managed Pressure Drilling Committee continues to drive safe practices...

  • 22 April 2015

    Video: Schlumberger’s At Balance brand aims to make MPD more accessible

    Schlumberger recently brought back the At Balance brand as a family of product and services offering at the 2015 IADC/SPE Managed Pressure Drilling and Underbalanced...

  • 21 April 2015

    Petrobras’ first MPD operation aboard a DP rig succeeds

    Petrobras’ first use of MPD aboard a dynamically positioned rig proved successful and kept NPT to less then 3%, according to a paper presented at the 2015 IADC/SPE...

  • Read more news