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Well Stimulation Technologies (PRE15)

  • 11-14 September 20184 daysBogota, ColombiaCourse Fee: 3990 USD
  • 21-24 October 20184 daysAbu Dhabi, UAECourse Fee: 3990 USD


This course covers the main aspects of Well Stimulation whose main objective is to repair formation damage in order to restore/increase production.
It starts by presenting the basic concepts for stimulation job design, execution and follow up. Discussion is carried out on formation damage and its effect on well performance and planning of acid stimulation treatments. Focus is given to the main causes of formation damage (damage during drilling, cementing, perforating, producing and working over wells) and how these may be identified.

Course Level: Skill
Instructor: Antonio Abreu

Designed for you, if you are...

  • A petroleum engineer
  • A production engineer or manager
  • A development geologist
  • A field engineer or manager
  • Oil field technical staff

How we build your confidence

  • The course will be presented using properly designed slides, some with animation and several videos on relevant issues
  • Teaching methods include also calculations on related issues
  • Several examples of actual Stimulation Programs will be presented

The benefits from attending

By the end of the course you will feel confident in your understanding of:

  • Introduction to stimulation operations
  • Formation damage mechanisms and their identification
  • Brainstorming on skin damage
  • Acids reactions and their selection for carbonates and sandstones
  • Acids and additives used in matrix stimulation
  • Candidate well selection
  • Acid treatment design
  • Acid placement and diverting technologies
  • Acid displacement and flow back
  • Laboratory tests
  • Acid fracturing design basics
  • HSE and acidizing operations
  • Safety & quality assurance


Introduction to Stimulation Concepts and Objectives
  • Introduction to acidizing
  • Acidizing of carbonates and sandstones
  • Acid fracking overview
  • Damage caused by well operations
  • Well candidate selection process (overview)
  • Why are there failures in acidizing?
  • Acid treatment design (overview)
  • Types of damage
  • Monitoring the acid backflow
  • HCL acid by-products
  • Capturing data before, during and after the job
  • Acid reactions with OBM (Oil Base Mud)
  • Emulsions
  • Module 2 27 Formation damage

Types of Acid and Acid Formulations
  • Formation damage and other considerations
  • Formation damage mechanisms
  • Matrix acidizing
  • Sandstone versus carbonate acidizing
  • Typical treatment execution
  • Fracture acidizing
  • Proppant fracturing versus fracturing
  • Economic impacts of well stimulation
  • Module 3 117 acid types / reactions / methods
  • Fluid injectivity on test core
  • Types of acid
  • Acid formulations
  • Organic acids
  • Acid dispersion
  • Viscosified acid
  • Acid emulsions
  • VES acid
  • Acid definition in chemistry
  • Strong acids
  • Hydrogen
  • VES-HCL: gelling and breaking
  • HCL reactions with carbonates
  • HCL / HF acids

Pressure Response, Post-Job Procedure
  • Stoichiometry
  • Acid reactions
  • Rates of reaction
  • Carbonate acidizing
  • Sandstone acidizing
  • Binary acids
  • Dissolving power of acids
  • Molecular weights
  • Treatment evaluation
  • Post-job procedure
  • Pressure response during acid treatment
  • On-site evaluation of treatment effectiveness
  • The Paccaloni technique
  • On job charts for job monitoring
  • Recording of a stimulation job
  • Pressure build-up analysis before and after acidizing

Monitoring, Execution, Evaluation and Follow Up
  • Monitoring, execution and evaluation
  • Maximum injection rate (Paccaloni)
  • Choosing diverting method
  • Three step application of Real Time Monitoring (RTM )
  • Examples of successful treatments
  • Example of unsuccessful diversion design
  • Acidizing operations
  • Acid placement and diversion
  • Mechanical acid placement
  • Packers and frac baffles
  • Ball sealers
  • Particulate diverting agents
  • Modelling diverging agents effect (Lab and R&D)
  • Change of Skin due to acidizing
  • Viscoelastic surfactants
  • MADPDIR technique
  • Comparison of diversion methods
  • HSE and stimulation operations




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