A Casing Wear Study in HP/HT Well

By: Florent COULIOU

High doglegs were present along an accidental nudge interval in vertical section (up to 3.5°/100ft DLS) of the well, resulting in potential critical level of wear along the 14” production casing. The operator’s maximum wear budget for this casing string being 15%.

To minimize the final level of wear along this casing, the operator suggested to run Non- Rotating Protectors (NRPs) within the 12 1⁄4” drill-string along the nudge interval. But some questions were raised: How many NRPs? Where? Will they be efficient?

The NRP provider initially recommended to install 3 protectors per DP. The Operator wanted to challenge this proposal, and before RIH with 12 1⁄4” drilling BHA, DrillScan was asked to:

  1. Assess the impact of the number and position of NRPs on load distribution along the string
  2. Anticipate the levels of wear along the 14” casing for several drillstring configurations

To find out what happened and how we helped our client to optimize the drillstring, read our white paper by leaving your contact below. We will share our success and failure stories on a monthly basis, so that you can get valuable insights for your well project.

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