51st SPE, Wellbore Positioning Technical Section (ISCWSA), Remote Meeting

Wellbore Positioning Technical Section


Remote WebEx Meeting ISCWSA Meeting 51 - 5th and 7th May 2020

click on CONTACT US to request to join one or both sessions if not already invited.

Click for Meeting Agenda


Part 1 Agenda, May 5th 2020: 08:00-09:30 America/Chicago.

-Introduction: - Ross Lowdon (Schlumberger) - ISCWSA Chair Meeting opening

-Harald Bolt (Depth Solutions) Updating of along-hole depth elements of the ISCWSA error model

-Darren Aklestad (Schlumberger) Determining errors associated with continuous 6 axis surveys -Angus Jamieson (H&P Technologies) Tortuosity Update

-Robert Wylie (xnDrilling, Inc.) Treasurer's Report 


Part 2 Agenda, #2 Thursday, 7th May, 2020 08:00-09:30 America/Chicago.
Request to join this conference and are not already invited, CONTACT US on our www.iscwsa.net website
-Introduction Ross Lowdon (Schlumberger) - ISCWSA Chair Meeting opening
-Nicolas Cosca (H&P Technologies) Early Identification of Drilling Collision Risk Using MWD Survey Quality Data
-Jim Towle (PDM) A new single-shot MWD correction method
-Andy McGregor (H&P Technologies) Sub-committee activity Report: Error Model Maintenance
-Phil Harbidge (PathControl) Sub-Committee Activity Report: Survey QA/QC
Please pass this message on to others who you feel would benefit from attending our meetings. We hope to "see" you all there next week.
Stay Safe
Kind Regards
ISCWSA Officers


See the message put out by SPE below:

SPE Events and COVID-19

Networking is such an important part of SPE, the COVID-19 virus has the potential to affect everything we do. Several conferences and workshops globally have been postponed; check the specific event websites. SPE will continue actively monitoring the situation and potential impacts on future activities. The health and safety of our members and attendees is our highest priority, and that will guide any decisions that we make. 

For those who want to learn more about the spread of the virus and protective measures, International SOS provides some excellent resources.



The ISCWSA Committee

Please visit our recently updated website www.iscwsa.net

Please pass this message on to others


  • Chair: – Ross Lowdon
  • Program Chair: Adrian Ledroz
  • Secretary: Ryan Kirby
  • Treasurer: Robert Wylie
  • Webmaster: Phil Harbidge
  • Membership Chair: Mark Willerth
  • Director at Large: Heather Vannoy – Position up for election in Fall meeting
  • Director at Large: Adrian Ledroz – Position up for election in Fall meeting
  • Director at Large: AnaS Sikal
  • Director at Large: Chad Hanak
  • Director at Large: Matthew Weber

If you are a member of a sub-committee, we will be grateful if you can plan to attend. If you are interested in serving on a committee, contact the sub-committee chairperson. A contact list is available on the ISCWSA sub-committee tab.

  • Steve Sawaryn, Collision Avoidance Subcommittee Chair
  • Andy McGregor, MWD Subcommittee Chair
  • Mahmoud Elgizawy, Education Subcommittee Chair
  • Phil Harbidge, Survey QAQC Subcommittee Chair
  • Benny Poedjono, Well Intercept Subcommittee Chair

Kind Regards,

If you or your organization can offer sponsorship for portions of the meetings (such as coffee breaks, lunches, meeting rooms etc.), please contact Ross Lowdon ,ISCWSA Chairperson. We are indebted to the many past sponsors who have contributed to sustain our technical community work which has been running for over 21 years and we look forward to continuing our good work for many years to come.
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About Us

Greetings from the SPE, Wellbore Positioning Technical Section, ISCWSA


"The primary aim of this group is to produce and maintain standards for the industry relating to wellbore survey accuracy. To set standards for terminology and accuracy specifications. Establish a standard framework for modelling and validation of tool performance. Raise awareness & understanding of wellbore survey accuracy issues across the industry."

Click here to download the NEW FREE ISCWSA: WELL INTERCEPT SUB-COMMITTEE ebook

Click here to play the recording of the SPE wellbore-ranging-technologies-intercept-applications-and-best-practices

Click here to download the FREE Introduction to Wellbore Positioning ebook V09.10.17

Click here to download the free Making the Most of Borehole Surveying Video


The ISCWSA, (Industry Steering Committee on Wellbore Survey Accuracy) work has resulted in the publication of technical papers, leading technical work shops, multiple SPE “Hits and Misses” workshops, the Wellbore Positioning e-book, anti-collision papers and API project. We have comprehensive cross-industry, international representation with regular attendance from a wide variety of service companies, operators, and consultants, academia and software companies.

The Industry Steering Committee on Wellbore Survey Accuracy was founded to dispel the confusion and secrecy commonly associated with wellbore surveying and to enable the industry to produce consistent, reliable estimates of survey-tool performance in today's wells. We achieve these goals through the production and maintenance of standards covering the construction and validation of tool error models.

Work focused initially on Measurement While Drilling systems. They provide a large proportion of the total directional survey data world-wide and, because of their similarities between suppliers, are more amenable to specification standardization than other types of survey tool.

There is no formal membership enrollment to join the ISCWSA and its meetings are open to all who wish to attend. The committee generally holds twice yearly meetings and has held 48 meetings internationally to date. The ISCWSA is also affiliated with the Society of Petroleum Engineers as the SPE Wellbore Positioning Technical Section, click here to join.

Click this link for the Wellbore Positioning Technical Section Meeting Minutes

Click here for Wellbore Positioning Technical Section Sub-Commitee information and documents

Active Sub-Committees




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