Night School – Cased Hole data Acquisition and Interpretations (Virtual Course)

High quality training to boost professional development. Courses are exclusive to PESGB members only.

16-25 March 2021

Ticket Type Price Qty*

Member Ticket

£85.00 (GBP)

Course Description


This is a course on cased hole data acquisition and interpretations. The course covers the following topics:

  • Production logging in single phase and two-phase flow regimes.
  • Reservoir monitoring behind casing
  • Well Integrity: leak detection and crossflow between zones caused by uneven depletions.

No prior knowledge or expertise in cased hole is necessary.

Session 1 | Tool Conveyance in cased holes
Facilitator: Mohamed Watfa
Date: Tuesday 16th March 2021
6:00pm – 8:00pm

  • Depth Control
  • Standard cased hole logging tools. Pressure, temperature, spinner, holdups, callipers.
  • Slippage velocities
  • Measurement of fluid velocities: Full-bore Spinner, micro-spinners, oxygen activation, gas bubble flow.

Session 2 | Production Logging
Facilitator: Mohamed Watfa
Date: Thursday 18th March 2021
6:00pm – 8:00pm

  • Spinner Calibrations: Why and how?
  • Holdup measurements
  • Production logging: single phase
  • Production logging two phase

Session 3 | Reservoir Monitoring
Facilitator: Mohamed Watfa
Date: Tuesday 23rd March 2021
6:00pm – 8:00pm

  • Pulsed Neutron Logging (PNL) theory: obtaining capture mode (sigma) and inelastic mode (Carbon/Oxygen; C/O) data.
  • Estimating water saturations using capture mode (sigma).
  • Estimating water saturation using C/O data.

Session 4 | Well Integrity
Facilitator: Mohamed Watfa
Date: Thursday 25th March 2021
6:00pm – 8:00pm

  • Leak detection
  • Spinner applications to estimate crossflow and the productivity index for any defined interval.
  • Water and gas conning.

Please ensure you have access to Excel for this course as worked examples will be given prior to the course.

Who should attend:
Aspiring, future leaders in the oil and gas industry who want to acquire skills beyond the academic and technical and obtain insights into the commercially orientated analysis. Acquire the global perspectives essential to professional success.

To access member-only events or to benefit from the reduced member fees please visit to find out how to become a PESGB member.

This course will go ahead regardless of the number of attendees.

Speaker Biography - Mohamed Watfa

Dr Mohamed studied at Cambridge university. Here he gained his BA, MA and PhD in Physics as well as a second BA in Psycholgy.

He joined Schlumberger Wireline in 1974 as a field engineer.

Worked in UAE, Saudi Arabia, Iraq, Kuwait, Oman, Qatar, India, Egypt,  Iran, Europe, North America, Far East, North Africa.

Head of Petrophysics for Schlumberger Middle East Area

Marketing Manager for the Gulf Area

VP national clients’ coordinator, and Geomarket manager

Lectures for NExT: Made more than 300 course lectures in the last 15 years

Published 90 technical papers and 10 books, covering:

Topics: Formation Evaluation, Carbonates Reservoirs, Sandstone Reservoirs, Production Logging, Reservoir Monitoring, Well Integrity and Data Management.

ROC: Edited and wrote most of the articles for the Reservoir Optimization Conference books published by SLB for: Libya, Saudi Aramco, Iran and UAE.

Books: Published 3 books on Basic Open Hole, Reservoir Monitoring, Production Logging and Well Integrity.

Lectured at Cambridge University for 2 years

Venue Information

Venue information

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This event will be delivered online.

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