Creative Thinking - Passion for Helping - Operational Excellence

TRIAGE identifies pipelines most likely to exhibit corrosion

TRIAGE mitigation guidance out-performs industry standards

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TRIAGE Classification Provides Rapid Benefits

  • Adoption of condition-based TRIAGE assessment with consideration of data pattern analytics is a refined threat assessment method proven to reduce, and even eliminate pipeline failures;
  • In response to feedback from Field, Operations clients, TRIAGE considers the previous "blind-risk" associated with upstream well behaviour;
  • TRIAGE eliminates mis-allocation of mitigation and maintenance costs for low-risk pipelines not at all vulnerable to corrosion; and,
  • Adoption of a condition-based integrity management provides opportunity for a typical 40% reduction in historical operating expense.

TRIAGE - 4-Step Project Execution

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TRIAGE is the Foundation of a Performance-Based Quality Integrity Management Process

TRIAGE identifies pipelines most probable to exhibit pre-existing corrosion damage and publishes corrosion mitigation guidance to position field, operations and chemical teams to properly align maintenance and inspection costs to achieve the maximum reduction in corporate risk exposure.

TRIAGE Results available for viewing for all Alberta Companies

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View your Company TRIAGE Hazard Assessment Results for Internal and External Pipeline Corrosion, plus Mitigation Guidance for Internal Corrosion

Consider unlocking TRIAGE Services for your Company

TRIAGE - DETAILS

 

Description of the three-steps to secure a TRIAGE subscription, along with the activities and deliverables associated with a subscription.

TRIAGE as a service designed to address root-causal issues contributing to pipeline failures.

Identification of regional integrity hazards associated with upstream well operations, and how application of complex data pattern analytics has been applied to create an improved pipeline risk modal, and an improved foundation for targeting future maintenance expense

TRIAGE - ALGORITHMS

TRIAGE shows pipelines most probable to exhibit corrosion

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Adoption of TRIAGE is a Perfect Fit for Field, Operations Teams

  • For many years Field, Operations teams have observed a disconnect between operations, engineering, compliance and financial functions;
  • They recognize a "compliance-is-enough" model is flawed, as it leads to misallocation of funds to low-risk assets, and causes under-mitigation of some critical high-risk pipelines;
  • TRIAGE algorithms have been become the industry-leading method for classifying pipeline risk because they were created in direct response to feedback from Field, Operations clients; and,
  • TRIAGE is the first method to rigorously consider the former "blind-spot" risk associated with the contribution of upstream well production to the initiation of high-rate internal corrosion damage, and by doing so provides an irrefutable basis for scheduling future maintenance costs.

TRIAGE classification relies upon irrefutable data patterns

"Internal Corrosion Triangle" addresses past "blind-spot" hazards by applying data pattern analytics

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  • All components of the corrosion triad are essential for internal corrosion to initiate, and grow; disruption by effective mitigation prevents corrosion, and stops growth;
  • The TRIAGE  assessment is unique by its rigorous consideration of complex data pattern analytics in combination with rigorous consideration of water-film transport; and,
  • Specific well production patterns associated with historical failure events are used to classify the severity of all production wells in a region.

TRIAGE aligns mitigation costs to high risk assets, and eliminates misallocation to low risk pipes

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  • TRIAGE risk assessment is a "classification" of pipeline risk as opposed to a "corrosion prediction" tool;  
  • Traditional under-performing "rules-of-thumb" for chemical addition are replaced by "condition-based" chemical schedules; and,
  • Proven results confirm TRIAGE pipeline classification is irrefutable and offers the industry-best foundation for directing mitigation, and inspection costs. 

Condition-based scheduling provides added-value to inspection and monitoring projects

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  • Traditional integrity plans trigger in-line inspection to satisfy regulatory requirements in response to a failure event, or prior to re-commissioning a dormant pipeline;
  • TRIAGE condition-based integrity management positions the owner to schedule inspections as validation of actual pipeline condition for those segments classified as vulnerable to pre-existing damage;
  • Condition-based inspection planning provides validation of historical mitigation activities; and,
  • TRIAGE classification positions the owner to extrapolate results of a single inspection onto a larger population with strong sibling association.

Considering well behaviour addresses "blind-spot" hazards

Specific Well Production Patterns Linked to 90 % of all Pipeline Leaks

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TRIAGE corrosion likelihood algorithms have been developed in response to a challenge from our Field, Operations clients;  concerned that available risk tools overlook the "blind-spot" hazard associated with upstream well behaviours.

Up-Lift of Fugitive Corrosive Fluids at High-Rate Episodic Hydraulic Event

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The consideration of episodic up-lift of extremely corrosive fugitive fluids associated with high-rate hydraulic events at well start-up (for an identified sub-set of producing wells) positions TRIAGE as the most reliable risk classification algorithm available. 

Character of Pipe Damage not Caused by Normal Reservoir Fluids

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It is reasonable for TRIAGE hazard assessment algorithms to acknowledge that aggressive corrosion morphology, and rapid through-wall penetration rates are attributed to ingress of a fugitive fluid; it is simply not possible from normal reservoir fluids.

Data patterns confirm role of "incubated" fugitive fluids

Behaviour of Extensive Networks of Oil & Gas Pipelines Align with Underlying TRIAGE Thesis

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  • As pipeline systems have been utilized at 65% of 2007 levels for past 10-years, annual failure counts have fallen; and,
  • As utilization climbs, and more and more wells are started, a rapid increase in pipeline failure events is bound to occur in the period beginning 2018 as the frequency of episodic events that introduces exceptionally corrosive fugitive fluids increases.

Actual Pipeline Failure Events Occur on a Very Tiny Sub-Set of Vulnerble Pipelines

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  • More than 90% of all failures are attributed to episodic high-risk events that occur at start-up of a specific sub-set of producing wells, which explains how failure events "cluster" within a few "bad-actor" neighbourhoods; and,
  •  Spatial pipeline failure patterns affirm how specific stimulation and production practices contribute to corrosion susceptibility within clustered geographical regions.

Spatial Data Patterns Show "Systemic" Behaviors that Help Classify Corrosion Susceptibility

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  • Application of complex data analytics onto a large production, and pipeline performance database confirms failures solely from reservoir fluids are rare, and within isolated regions;
  • Data patterns provide an irrefutable basis for identifying at-risk pipelines that exhibit behaviour similar to past failure events because the algorithms consider the former "blind-spot" hazards attributed to upstream well behaviour.

Detrimental water-film transport pin-points at-risk sites

Industry Standard Corrosion Rate Models

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  • NACE standard corrosion rate models establish the maximum possible corrosion rate associated with normal fluids, and pipeline operating conditions;
  • Corrosion rate models are "static" models, and do not consider the implications of water-film transport;
  • Industry standard corrosion rate models by themselves do not offer a real-world characterization of actual corrosion behaviour within pipelines;
  • Consideration of dynamic water-film movement is an essential element to the "Corrosion Triangle" assessment model.

Consideration of NACE - ICDA Critical Angle

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  • Characterzation of pipeline topography by application of digital elevation mapping (DEM) contributes to characterization of water-film transport properties; and,
  • Whether water will accumulate in corrosive traps, or be carried (problem-free) through the pipeline.

Stagnant Water-Film Necessary for Corrosion

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  • Corrosion likelihood assessment algorithm considers gas-liquid shear stresses, and the ability of the water-film to be carried along the pipeline;
  • At regions where water accumulates, there is a possibility that local pH levels may become acidic; a requirement for corrosion to occur; and,
  • Fast-moving water-films are not vulnerable to localized corrosion because of "solution-by-dilution", and avoidance of low pH regions.

Corrosion Damage Aligns with Low pH Water Traps

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  • Digital elevation mapping characterizes inclination angle profile for pipelines;
  • At locations where upwards inclination exceeds the ability of the gas (and oil) to transport the water-film, accumulations of water will occur (critical inclination angle); typically causing the pipeline to fill 30-40% with stagnant water; and,
  • If low volumes of water are produced, the residence time of the water within stagnant trap regions may be vulnerable to reduced pH, and increase the likelihood corrosion will occur.

IC Likelihood Scoring Algorithm

Translating Exposure to Internal Corrosion into a Likelihood Score

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Numerical algorithm for characterizing exposure to "TRIAGE - Corrosion Triangle".

Field, Operations teams "create their own adventure"

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TRIAGE "Dynamic Workshop Format" Respects the Knowledge of Field, Operations Teams to Create the Best Mitigation and Inspection Work Plans

  • Our corrosion hazard assessment algorithms create guidance (and not directives) from which Field, Operations teams are positioned to respond appropriately to those pipelines most vulnerable to corrosion damage;
  • By considering TRIAGE guidance, Field Operations teams rapidly create the best work schedules by choosing the option that best fits with their operational experience, and knowledge of the complex network configuration;
  • Acceptance and uptake of TRIAGE guidance by Field, Operations teams has proven to be rapid, enthusiastic, and fast-to-offer-benefit; and,
  • Because of the in-depth analysis, and by considering insight from Field, Operations teams, TRIAGE-based work plans have proven to reduce, and even eliminate pipeline failures at cost savings of 40% compared with historical industry methods.

Results posted to AbaData and private client download sites

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Access within AbaData has Generated Enthusiastic Response from Field, Operations Teams

  • Field, Operations teams are universally supportive of accessing useful reports within the broadly-used AbaData pipeline mapping software application - Alberta;
  •  Subscribers to TRIAGE Services are able gain access to reports in a manner consistent with existing AbaData user-experience; pipeline selection, data viewing, reporting, and exporting; and,
  •  Simultaneous with posting to AbaData is the posting of proprietary standard reporting suites (MSExcel Pivot Reports) at secure Client web-pages. 

Contact Us to Discuss how TRIAGE can Complement your Work

TRIAGE identifies pipelines most probable to corrode, and offers risk-based mitigation guidance for field, operations and chemical teams.

David Richardson, P.Eng.

Trusted Pipeline Advisor

(403) 880-2835