Acidizing is one of the most widely used stimulation methods and one of the most frequently mis-designed. Success depends on matching the acid system to the rock and the fluids, getting the diversion right, and executing the treatment the way it was engineered. This workshop covers the full acidizing workflow across sandstone, carbonate and geothermal reservoirs — treatment types and reaction principles, wormhole development in carbonates, diversion techniques, acid additives, laboratory testing and fluid-rock compatibility, the engineering calculations needed to size a treatment, surface stimulation equipment for onshore and offshore work, simulation-based optimisation, and post-treatment job evaluation. Throughout the two days the emphasis stays on field practice: what works, what fails, and what the results tell you afterwards.

Workshop Objectives

By the end of this workshop, participants will be able to:


Distinguish between matrix acidizing, acid fracturing and acid washing, and select the right treatment type for the well


Apply sandstone acidizing principles including HF/HCl systems, reaction sequence and precipitation control


Explain carbonate acidizing reaction kinetics and how wormhole structures develop and propagate


Adapt acidizing design to geothermal well conditions and high-temperature constraints


Select and apply diversion techniques and evaluate their effectiveness across the treated interval


Identify the formation damage mechanisms caused by acidizing and design treatments that avoid them


Specify acid additives — corrosion inhibitors, iron control agents, surfactants, clay stabilisers — and justify each selection


Plan and interpret laboratory tests on acids, additives and fluid-rock compatibility


Perform acid volume, concentration, rate and pressure calculations for a complete treatment design


Use simulation to optimise treatment design and predict acid placement and penetration


Select appropriate stimulation equipment for onshore and offshore operations


Evaluate acidizing job performance from post-treatment data and identify what went wrong when results underperform


Build a complete acidizing design from real well data

About the Presenter

Peyman Daneshfar is an accomplished Well Stimulation Engineer with over 11 years of experience in the oil and gas industry. He specializes in a wide range of well stimulation techniques, including acidizing (Matrix/Fracturing), scale removal, and nitrogen lifting, applied across both offshore and onshore operations. His work spans various geological settings and production environments, delivering optimized solutions for reservoir productivity enhancement.


He holds both Bachelor’s and Master’s degrees in Petroleum Engineering, with a research emphasis on asphaltene deposition during production and CO₂ injection, demonstrating a strong foundation in flow assurance and enhanced oil recovery (EOR) technologies.


As a seasoned technical instructor, he has led numerous international training courses and workshops on well stimulation, acidizing and hydraulic fracturing helping professionals and engineers around the world improve their technical skills and operational decision-making. His training approach combines scientific fundamentals with hands-on simulation, case studies, and field-proven methodologies.


He is proficient in leading industry software, such as StimPro™ , GOHFER, WellBook and FracPro™, and holds a comprehensive set of certifications, including IWCF well control, HUET, firefighting, sea survival, and other HSE standards, reflecting a strong commitment to operational safety and technical excellence.

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Material Balance Modeling
November 28, 2026 - November 29, 2026
Material Balance Modeling

Material balance is one of the most direct methods available to a reservoir engineer for estimating hydrocarbons in place, identifying the drive mechanism and forecasting reservoir performance. It requires far less data than a full numerical model, and when it is set up correctly it produces results that can be defended in technical reviews and reserve audits.This workshop covers the complete material balance workflow as it is applied on producing assets. It begins by placing the reservoir within the integrated production system, then moves through data preparation and quality control, tank model construction, drive mechanism identification, and the use of analytical and graphical diagnostic tools. Participants work through the classical diagnostic plots, including Dake and Campbell, and learn how to read what each plot indicates about depletion, gas cap expansion and water influx.The second part of the workshop addresses history matching using both analytical and graphical techniques, determination of STOIIP, aquifer identification and sizing, and running prediction cases to generate production forecasts and recovery estimates. Results are compared against volumetric and simulation-based estimates so that participants understand where material balance is reliable and where a numerical model becomes necessary.The workshop is delivered at an advanced level and is intended for engineers who already work with production and pressure data and want a structured, repeatable method for in-place volumes, drive mechanism evaluation and performance prediction.