DwpD Ltd., Depth Solutions
Subsurface 3D Positioning
and Positional Uncertainty
Subsurface 3D Position and Positional Uncertainty WDDrev7.0
ISBN 978-1-3999-8880-3
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Publications related to wireline depth
Bolt H., Loermans A.M. (Ton), and Theys P., 2015, New Options for Wireline Logging Depth Data Quality Improvement, Society of Petrophysicists and Well-Log Analysts, Paper presented at the SPWLA 56th Annual Logging Symposium, July 18–22, 2015, Paper Number: SPWLA-2015-LL
Bolt H., Loermans A.M. (Ton), and Kimminau S., 1999, On The Quest For Depth, Society of Petrophysicists and Well-Log Analysts, Paper presented at the SPWLA 40th Annual Logging Symposium, May 30–June 3, 1999, Paper Number: SPWLA-1999-B
Forsyth D., Bolt H., and Loermans A.M. (Ton), 2013, Improved Depth Quality Management: Where Old Theory Should Meet (Near) Future Practice, Society of Petrophysicists and Well-Log Analysts, Paper presented at the SPWLA 54th Annual Logging Symposium, June 22–26, 2013, Paper Number: SPWLA-2013-JJJ
Bolt H., 2016, Wireline Logging Depth Quality Improvement: Methodology Review and Elastic-Stretch Correction, Journal: Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description, Society of Petrophysicists and Well-Log Analysts, Petrophysics 57 (03): 294–310., Paper Number: SPWLA-2016-v57n3a5, Published: 01 June 2016
Publications related to drill pipe depth
Bolt H., 2017, Driller’s Depth Quality Improvement: Way-Point Methodology, Journal: Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description, Society of Petrophysicists and Well-Log Analysts, Petrophysics 58 (06): 564–575. Paper Number: SPWLA-2017-v58n6a1, Published: 01 December 2017
Bolt H., 2017, What Depth? Driller’s Depth Determination, SPE Wellbore Positioning Technical Section Meeting, 45th Annual Conference. The Hague, March 2017
Bolt H., 2018, What Depth ? More Accurate Driller’s Depth - DwpD Field Results, ISCWSA 47th Annual Meeting, Inverness, UK, April 2018
Bolt H., 2019, Correction of Driller’s Depth: Field Example Using Driller’s Way-Point Depth Correction Methodology, Journal: Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description, Society of Petrophysicists and Well-Log Analysts, Petrophysics 60 (01): 76–91., Paper Number: SPWLA-2019-v60n1a7, https://doi.org/10.30632/PJV60N1-2019a7, Published: 01 February 2019
Bolt H., 2019, Increasing Value Through Reducing Differences Between LWD and Wireline Depths, Society of Petroleum Engineers (SPE), Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2019, Paper Number: SPE-196035-MS, https://doi.org/10.2118/196035-MS
Publications related to well depth and 3D positional uncertainty
Bolt H. and Harbidge P., Three-Dimensional Positional Uncertainty Based on Along-Hole Depth, Inclination and Azimuth Accuracies, Society of Petroleum Engineers (SPE), Paper presented at the SPE/IADC Middle East Drilling Technology Conference and Exhibition, May 23–25, 2023, Paper Number: SPE-214561-MS, https://doi.org/10.2118/214561-MS
Bolt H. and Harbidge P., Methodology for Portraying Three-Dimensional Positional Uncertainty Using Along-Hole Depth, Inclination and Azimuth Measurement Accuracies, Society of Petrophysicists and Well-Log Analysts, Paper presented at the SPWLA 64th Annual Logging Symposium, June 10–14, 2023, Paper Number: SPWLA-2023-0075, https://doi.org/10.30632/SPWLA-2023-0075
Other publications
Hutchinson M., Thornton B., Theys P., and Bolt H., 2018, Optimizing Drilling by Simulation and Automation with Big Data, Society of Petroleum Engineers (SPE), Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–26, 2018, Paper Number: SPE-191427-MS, https://doi.org/10.2118/191427-MS
Cayeux E., Daireaux B., Macpherson J., Bolt H., Harbidge P., Annaiyappa P., Carney J., Ziadat W., and Edwards M., Analysis of the Sources of Uncertainty in Geopressure Estimation While Drilling, Society of Petroleum Engineers (SPE), Paper presented at the SPE Annual Technical Conference and Exhibition, October 16–18, 2023, Paper Number: SPE-214962-MS, https://doi.org/10.2118/214962-MS
Cayeux E., Daireaux B., Macpherson J., Damski C., Annaiyappa P., Carney J., Ziadat W., Harbidge P., Edwards M., and Bolt H., The Role of Semantic Networks in Mitigating Risk During Data Exchange in Multi-Disciplinary Well Construction, Society of Petroleum Engineers (SPE), Paper presented at the IADC/SPE International Drilling Conference and Exhibition, March 5–7, 2024, Paper Number: SPE-217668-MS, https://doi.org/10.2118/217668-MS