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A Practical Approach to Casing Wear Prediction, Modeling and Mitigation on Challenging ERD Wells

Authors
Weifeng Dai (ConocoPhillips Alaska, Inc) | Brian Noel (ConocoPhillips Alaska, Inc) | Chip Alvord (ConocoPhillips Alaska, Inc) | Johnson Njoku (ConocoPhillips Alaska, Inc) | Joey Hopper (WWT International) | Lee Smith (Alaskan Energy Resources, Inc)
DOI
https://doi.org/10.2118/191495-MS
Document ID
SPE-191495-MS
Publisher
Society of Petroleum Engineers
Source
SPE Annual Technical Conference and Exhibition, 24-26 September, Dallas, Texas, USA
Publication Date
2018
Document Type
Conference Paper
Language
English
ISBN
978-1-61399-572-3
Copyright
2018. Society of Petroleum Engineers
Disciplines
7.2.1 Risk, Uncertainty and Risk Assessment, 1.7.2 Managed Pressure Drilling, 1.6.6 Directional Drilling, 7.2 Risk Management and Decision-Making, 1.6 Drilling Operations, 7 Management and Information, 1.7 Pressure Management, 1.10 Drilling Equipment
Keywords
analysis, ream-while-drilling RWD, casing wear, extended-reach wells, torque reduction
Downloads
20 in the last 30 days
445 since 2007
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SPE Member Price: USD 8.50
SPE Non-Member Price: USD 25.00
Abstract

Casing wear caused by rotating drill strings can lead to reduced well life, failed or burst casing strings, and expensive non-productive time (NPT) for remedial actions. In Alaska's Alpine Development field, where logistics are challenging, regulations are strict, and the operational window is small, drilling increasingly long laterals has vastly increased the cost and risk of casing wear, necessitating effective mitigation.

After detailed analyses of Alpine field wells, one operator successfully implemented a casing wear mitigation plan combining new tools, modeling techniques and analyses. The plan required strategic placement of Non-Rotating Protectors (NRPs) based on predicted casing wear, analyzed side forces, and lateral length. Additionally, the operations group wanted to simultaneously improve computer modeling for both casing wear and torque and drag (T&D) analysis.

One major challenge was predicting appropriate wear factors for casing wear modeling. Operational challenges included how to deploy the plan in managed pressure drilling (MPD) operations, where preventing premature wear on rotating control device (RCD) sealing elements had to be considered.

Implementing this casing wear mitigation plan allowed the operator to successfully drill extended reach multilateral wells to planned total depth while keeping wear below maximum allowable thresholds. The paper describes the challenges and approach to predict casing wear, as well as successful mitigation strategies and lessons learned from an extensive offset database. Included are comparisons to field results from casing logs, and several wells that deployed the casing wear mitigation plan, versus an offset well that was drilled without a plan.

The paper describes new techniques for predicting and modeling casing wear which, in combination with utilization of specific tools, results in a readily-applicable approach to wear mitigation in extended-reach drilling (ERD).

File Size  1 MBNumber of Pages   12

Alvord, C.,et.al., "Step Change in Drilling Efficiency: Application of New Technology in the Alpine Development Field," paper IADC/SPE 87176, presented at the IADC/SPE Drilling Conference, Dallas, Texas, U.S.A., 2-4 March 2004.

"Alaska operators start Alpine field, take more leases," Oil&Gas Journal, Vol.98, issue 49; https://www.ogj.com/articles/print/volume-98/issue-49/exploration-development/alaska-operators-start-alpine-field-take-more-leases.html; link accessed 04/2018.

Alvord, Noel, et.al, paper OTC 18975-PP, "RSS Application Shows Higher Offshore Potential in Onshore Extended Reach Development Wells," Offshore Technology Conference, Houston, Texas, U.S.A., 30 April-3 May 2007.

Hall, Garkasi, et.al., "Recent Advances in Casing Wear Technology," paper IADC/SPE 27532, prepared for presentation at the 1994 IAD C/SPE Drilling Conference, Dallas, Texas, 15-16 February 1994.

Mitchell, Sarah, and Xiang, Yanghua, paper IADC/SPE 151448, "Improving Casing Wear Prediction and Mitigation Using a Statistically Based Model, prepared for presentation at the IADC/SPE Drilling Conference and Exhibition, San Diego, California, USA, 6-8 March 2012.

Lim and Smith, et.al., paper IADC/SPE-SPE-178237-MS, "An Integration of Drilling/Completion Technologies for Maximizing Long-Term Productivity," prepared for presentation at SPE/IADC Middle East Drilling Technology and Exhibition, Abu Dhabi, UAE, 26-28 January 2016.

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