Petrolects Training

Sand Control
A 2-day Course

Course Description:

Oil and gas wells are prone to producing some of the formation sand with the fluids. Softer, shallow, and younger formations with compressive strength less than 1000 psi or almost no natural cementation are candidates for sand production. As a result of this, the well can plug, equipment can erode, and well productivity can suffer.

On day one, causes of sand production, consequences of sand production, predicting sand production, sand control techniques, gravel pack design, and slotted liners and wire wrapped screens will be presented. On day two of the course, gravel-pack completion equipment, well preparation for gravel packing, gravel placement techniques, pre-packing the perforations, open-hole gravel packing, and finally sand control in horizontal and highly deviated wells are presented and discussed.

Course Level:

This course is an intermediate level course.

Who Should Attend?

This course is intended for the following audience:

  • Production engineers
  • Environmental engineers
  • Facility engineers
  • Management and personnel overseeing daily oilfield and gasfield productions


Dr. Mason M. Medizade - President and CEO, Petrolects, LLC

Dr. Mason Medizade has more than twenty five years of experience in the oil and gas industry, worldwide. His oilfield experience spans from reservoir engineering, drilling, and completion, to enhanced oil recovery and petroleum production. Specifically, he has done engineering work related to real time production monitoring, production enhancement, drilling fluids, reserve estimation, filtration, sand control, surface facility design, and EOR and reservoir management. He has been involved in consulting, research and teaching in renewable and non-renewable energy sources since 1984. Dr. Medizade's recent oilfield work involves real time flow monitoring for which he has obtained a US patent. Dr. Medizade is president and CEO of Petrolects, LLC.

Dr. Medizade is also a faculty member in the mechanical engineering department at California Polytechnic State University in San Luis Obispo, where he focuses on petroleum engineering, wind energy, thermodynamics, and fluid mechanics. Professor Medizade has taught numerous short courses in petroleum engineering to clients such as Petroleum Development of Oman (PDO), California Division of Oil and Gas, Petroleum Technology Transfer Council (PTTC), Texaco, Pertamina, and others. Dr. Medizade is an active member of the Society of Petroleum Engineers (SPE) and many other professional societies. He has authored numerous technical papers. His recent SPE paper discusses cyclic steam injection monitoring in diatomite. He has won numerous awards and certificates for his teaching and research work, including professorship from UNOCAL. He holds Ph.D. and M.S. degrees in petroleum engineering from University of Southern California (USC), and a B.Sc. degree in chemical engineering from Abadan Institute of Technology (AIT) in Abadan, Iran.

Course Content:

Day 1

  • Causes of sand production
    • Fluid flow
    • Restraining forces
  • Consequences of sand production
    • Accumulation downhole
    • Accumulation in surface equipment
    • Erosion of downhole and surface equipment
    • Collapse of the formation
  • Predicting sand production
    • Operational and economic influences
    • Formation strength
    • Sonic log
    • Formation properties log
    • Porosity
    • Drawdown
    • Finite element analysis
    • Time dependence
    • Multi-phase flow
  • Sand control techniques
    • Maintenance and workover
    • Rate restriction
    • Selective completion practices
    • Plastic consolidation
    • High energy resin placement
    • Resin coated gravel
    • Stand-alone slotted liners and screens
    • Gravel packing
    • Guidelines for selecting sand control
  • Gravel pack design
    • Formation sand sampling
    • Sieve analysis
    • Gravel pack sand sizing
    • Gravel pack sand
    • Gravel pack sand substitutes
  • Slotted liners and wire-wrapped screens
    • Slotted liners
    • Wire-wrapped screens
    • Prepacked screens
    • Flow capacities of screens and slotted liners
    • Tensile / collapse strength of wire-wrapped and prepacked screens
    • Proprietary screen designs
    • Plugging and erosion tests on proprietary and commodity screens

Day 2

  • Gravel pack completion equipment and service tools
    • Gravel pack base
    • Seal assembly
    • Gravel pack screen
    • Blank pipe
    • Shear out safety joint
    • Knock out isolation valve
    • Gravel pack extension
    • Gravel pack packer
    • Gravel pack service tools
  • Well preparation for gravel packing
    • Drilling practices
    • Maintaining wellbore stability
    • Formation damage
    • Cleaning the casing, openhole, and work string
    • Surface facilities
    • Quality assurance
    • Filtration
    • Completion and gravel pack fluids
    • Perforating for gravel packing
    • Perforation cleaning
    • Washing
    • Backsurging
  • Gravel placement techniques
    • Background
    • Physical model observation
    • Field results
    • Gravel packing with shunts
  • Prepacking the perforations
    • Cased-hole gravel packs
    • Choices of fluids
    • Prepacking below fracture pressure
    • Prepacking above fracture pressure
  • Openhole gravel packing
    • Guidelines for selecting openhole gravel pack candidates
    • Top set openhole gravel pack
    • Selecting the casing seat
    • Drilling the open-hole
    • Underreaming
    • Hole cleaning
    • Set through openhole gravel pack
    • Gravel packing openhole completion
  • Sand control in horizontal and highly deviated wells
    • Stand alone slotted liner and screen completion
    • Horizontal gravel packing
    • Field results

Course Materials:

The following course materials will be provided by Petrolects:

  • Course workbook
This short course is provided with endorsement from the Petroleum Technology Transfer Council.
Copyright © 2013 by Petrolects, LLC.
All rights reserved.