1 / 10

ICDA of Gas Transmission, Gathering & Storage Systems

ICDA of Gas Transmission, Gathering & Storage Systems. GOAL: Develop a protocol for Validation of dry gas ICDA method: Identify data needs Develop procedures for validation Develop evaluation criteria TASK: Identify sources of field data for validation Validate ICDA method for dry gas

justin
Download Presentation

ICDA of Gas Transmission, Gathering & Storage Systems

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ICDA of Gas Transmission, Gathering & Storage Systems GOAL: Develop a protocol for Validation of dry gas ICDA method: • Identify data needs • Develop procedures for validation • Develop evaluation criteria TASK: • Identify sources of field data for validation • Validate ICDA method for dry gas • Demonstrate the method using an example

  2. Dry Gas ICDA Approach Utilizing a fluid flow model, the critical angle for water accumulation is determined as a function of gas velocity. The actual angle of inclination of pipe with respect to gas flow direction is determined through digital elevation maps and pipe burial depths

  3. Example 1

  4. ICDA Process First highest angle corrosion corrosion corrosion corrosion corrosion 0 1 2 3 -4 -3 -2 -1 Gas flow No corrosion No corrosion Region

  5. Example 1 ICDA Score Card • A historical IC leak was predicted by ICDA.

  6. ICDA Methodologyfor Wet Gas ICDA Goal GOAL: Develop a method for wet gas ICDA to: • Identify locations most likely to have maximum internal corrosion • Transmission, gathering & storage pipelines • Focus on HCA rule Status: • Consensus developed on overall methodology • Detailed flow modeling using FLUENT indicates applicability of a critical angle • Work ongoing to develop probability distributions for corrosion severity with distance • Need ILI (or other integrity) data

  7. Improvements to ECDA Assessment Methodology by Incorporating Soils Data GOAL: Obtain field data for soils to develop a soils model for existing external corrosion direct assessment (ECDA) datasets and methodology Identify corrosion/soils model protocol Task: Establish dataset of existing field inspection sites with indirect soils inspection data Collect soils-related data from on-going ECDA effort modify existing soils model, which was developed for stress-corrosion cracking assessments, for ECDA. Effort will be conducted concurrently with an ECDA demonstration project funded by GTI/PRCI.

  8. Improvements to ECDA Assessment Methodology by Incorporating Soils Data Status: Completed collecting soils data from existing operator dataset On-going effort to collect soils-related data from parallel R&D effort with GTI/PRCI Soils model modification currently under development

  9. Develop high-amplitude guidedwave for long range pipeline inspection GOAL: Develop a method for rapid screening in long lengths of pipe for corrosion & other defects Need high-power, guided-wave inspection technology in buried applications with bituman coating Target goal is an increase by 20 fold of amplitude Task: Investigate multiple sensor/strip pairs & sensor optimization Evaluate alternate strip materials Modify existing system and validate performance Conduct field demonstrations

More Related