Well Integrity - Cased Hole Logging
Introduction to basics of rock physics properties and the petrophysical parameters needed for the cased hole logging interpretation. Introduction to the open hole logging tools which can be used to obtain these parameters and their output data needed for cased hole logging tools interpretation. Quick Look Well Log Interpretation using these petrophysical parameters for reservoir quality evaluation.
The basic principles and interpretation of the cased hole logging tools and using the output data for the reservoir monitoring and then applying the reservoir monitoring principles to field applications. The Well Completion related to Perforation System according to the results obtained from the CBL / VDL, TDT / RST, RFT / MDT, and PLT logs. The Cementing or Remedial cementing works using CBL /VDL results related to Petrophysics and Reservoir Monitoring
DAY 1
- Introduction to rock physics properties and the petrophysical parameters needed for the cased hole logging interpretation.
- These petrophysical parameters include
- Porosity
- Permeability and Permeability / Porosity Relationships
- Volume of shale
- Fluid saturations.
- Introduction to the logging tools will be used to obtain these petrophysical parameters.
- Introduction to Lithology, Porosity, and Resistivity tools.
DAY 2
- Principles and interpretation of the open hole logging tools which can be run in cased holes and the open hole Logging data needed for Cased Hole Logging:
- Open-Hole Logging tools: Definitions, Measurements, Applications, Equations
- Lithology tools: Gamma Ray (GR) & Spectral Gamma Ray (NGT)
- Porosity tools: Sonic and Neutron.
- Resistivity tools.
- Open-Hole Logging tools: Definitions, Measurements, Applications, Equations
- Quick Look Well Log Interpretation:
- Lithology Interpretation,
- Porosity, Vsh, and Rw Calculations,
- Water Saturation and Permeability Determination
Exercise: To calculate the fluid saturation using these petrophysical parameters
DAY 3
- Principles and interpretation of the other open hole logging tools which can be run in case holes:
- Repeat Formation Tester (RFT) tool
- Modular Formation Dynamics Tester (MDT) For:
- Determine static reservoir pressure
- Locate formation fluid contacts
- Verify reservoir isolation.
- Indicate reservoir depletion.
- Calculate reservoir permeability.
formation fluid contacts and verify reservoir isolation. Using these logs in the field wide for reservoir depletion
and reservoir monitoring.
Exercise: To differentiate between the different gradients of different types of fluids; Gas, Oil, and water. To locate the different types of contacts Gas / Oil and Oil / Water contacts. Indicate the reservoir depletion from
a field study.
- RFT & MDT Log Examples
- Principles and interpretation of cased hole logging tools which can be run in open holes:
- Thermal Decay Time tool (TDT)
- Reservoir Saturation tool (RST) For:
- Monitoring Fluid Contacts
- Reservoir monitoring.
follow up the fluid contacts raised by production in a time-lapse technique. Using these tools at different
times for reservoir monitoring.
Exercise: To calculate the formation water saturation (Sw) from TDT log example using open-hole logging
data as porosity and volume of shale
DAY 4
- Cased-Hole Logging Tools
- Definitions, Measurements, Applications, Equations,
- Definitions, Measurements, Applications, Equations,
- Principles and interpretation of Cement Bond (CBL) & Variable Density (VDL) tool for reservoir monitoring.
- Applications to field development
- Cement Bond (CBL) & Variable Density (VDL) log details:
- Principle of Operation
- Basic Sonic Theory
- Cement Bond Log (CBL)
- Variable Density Log (VDL)
- Quantitative Interpretation of CBL and Qualitative Interpretation of VDL using: CBL – VDL Log Example. For:
- Evaluate zone-to-zone isolation:
- Cement coverage of casing for corrosion protection, mechanical strength
- Identify cement top
- Evaluate cement repair jobs
- The Rig Cementing and Remedial cementing works using CBL /VDL results related to Petrophysics and
- Reservoir Monitoring.
- Well-completion related to perforation intervals according to CBL / VDL results
Case study: Using the CBL / VDL log example to evaluate zone-to-zone isolation, determine the good and poor cement bonds, identify cement tops, and evaluate the quality of cement. The decision for Rig cementing and Remedial cement jobs according to cement quality. Then, well completion related to perforation intervals, Petrophysics and Reservoir Monitoring.
Exercise: To determine the good and poor cement bonds. To locate the perforation intervals and top of cement by using the CBL /VDL log example.
- Production logging (PLT) log:
- Principles and interpretation of production logging tools (PLT):
- Applications to field development.
- Production logging (PLT) log includes:
- Fullbore – Spinner, continuous, or packer Flowmeters.
- Gradiomanometer.
- Manometer.
- Thermometer
- Caliper & Radioactive Tracer. For:
- Fullbore – Spinner, continuous, or packer Flowmeters.
- Gradiomanometer.
- Manometer.
- Thermometer
- Caliper & Radioactive Tracer
Case study: Using the PLT log example to evaluate which perforations are plugged and which are producing or accepting. Monitoring of reservoir production. Evaluation of reservoir production or injection efficiency. Essential guidance for Remedial and Workover jobs
Exercise: To determine which perforations are plugged and which are producing or accepting and the percentage of production or injection for each perforation using the PLT log example
DAY 5
- Applications to field development
Case study 2: Unconventional Reservoir Example from different areas in the world:
- Low Resistivity in Shaly Sand (in Egypt)
- Low Resistivity in Silt Reservoir. (In South Africa)
Case study 5: Reservoir Petrophysical Modeling for Carbonate and Clastics reservoirs with different Hydrocarbons (Oil and Gas) from different areas (Gulf Arab countries and Egypt). Using New Approaches and Modern Techniques.
Exercise:
- Practical Training Examples:
- Using Raw Log Data for Quick Look Interpretation and Formation Evaluation
What is Well Integrity - Cased Hole Logging training course objective?
- Introduction to the rock physics properties and the petrophysical parameters needed for the cased hole logging interpretation.
- They will be acquainted with the quick look well log interpretation using the petrophysical parameters for reservoir quality evaluation.
- Understanding the basic principles and interpretation of the open and cased hole logging tools and bench out the reservoir monitoring and then apply cased hole logging and reservoir monitoring principles to field applications.
- They will be acquainted with the evaluation of casing and cement quality for reservoir isolation.
- Also, they will be acquainted with the advanced knowledge of single and multiphase flows and analyzes possible flow or injection in reservoirs and analyze possible flow abnormalities in the wellbore and how to remedy them.
- Reservoir formation evaluation from cased hole logging tools when missing open hole tools.
- They will be acquainted with the Well Completion related to Perforation System using the CBL / VDL, TDT / RST, RFT/ MDT, and PLT log results which are related to the Petrophysical evaluation and Reservoir Monitoring.
Who should join Well Integrity - Cased Hole Logging training course by PetroSync?
- Petroleum Engineers, Production, and Reservoir Engineers
- Field Operations and supervisors
- Geoscientists involved in field development
- Well Logging Analysts and Petrophysicists
Prof. Dr. Ahmed Taha Amin
Prof. Dr. Ahmed Taha Amin is an expert in formation evaluation, core analysis and reservoir modeling. He has broad experience working with assets and providing properties for reservoir characterisation and strong experience with carbonate petrophysics over 15-years experience.
He has extensive experience over 45 years in industry, principally in log analysis and Formation Evaluation in various technical and managerial positions for Gupco (Cairo, Egypt), Adco and Adnoc (Abu Dhabi, UAE), QGPC (Doha, Qatar), Apache (Cairo, Egypt), RPS Energy (in UK) and CEPSA in Egypt.
He is an instructor for Basic, Intermediate, Advanced Petrophysics, Core-Log Integration, Image Interpretation, IP software Application and LQC for Data Management training courses. He was supervised the Petrophysical studies and Wire-Line operations for Apache Egypt operated by: APACHE, QARUN and KHALDA Companies for 10 years. He did Petrophysical Evaluation projects in a few countries such as Algeria, Egypt, Yemen, Kuwait, Madrid, South Africa and East Asia.
