Participants will learn the techniques used by wellsite geologists in formation evaluation through a combination of lectures and exercises that can typically be done at the wellsite. At the end of the course, the participants should have a good understanding and knowledge of the requirements of both Operations and Wellsite Geology.

The course will blend classroom instruction with several practical exercise sessions. If location permits, a visit to a wellsite can be arranged.

E&P staff who want to learn the functions that are performed by Geologists at the wellsite.

Day 1

• Introduction
• What is an Operations and Wellsite Geologist?
• Exploration and Drilling Programs – Risk assessment, regional analysis, pre-drill data acquisition.
• Components of a prospect
• Overview of Petroleum Geology
• The Petroleum system – elements & processes
• The Reservoir – Sedimentary Environments
• The Trap – Structure & Stratigraphy
• Mapping and Cross-Sections
• Pore Systems and Flow Units
• Reserves and Resources – classification and categories
• Data Types and Management
• Wireline Data – open and cased hole, testing, LWD and MWD
• Mud Logging Data – geological, drilling, pressure
• Core Data – whole core and sidewall core
  
  

Day 2

• Drilling Operations
• The drilling team – who does what?
• Types of Drilling rigs
• Rig Sub-systems – power, hoisting, rotary, circulating, well control
• Drilling tools and components – including drilling fluid
• Well control – kicks causes – basic calculations – safety equipment – kill methods
• Well costs
• Planning a Well
• Well Design
• Directional Drilling – methods and calculations
• Geosteering
• Mud Logging
• The Logging unit – components and functions
• Services – monitoring, sampling, analysis
• Cuttings analysis and description
• The mud log
• Safety considerations – monitoring, overpressure, downtime
  
  

Day 3

• Mud Logging (continued)
• Gas detection and analysis – types of gas – gas shows – equipment and methods
• Pore Pressure and Wellbore Stability
• Overburden and compaction
• Pore pressure generation – estimation – normal and abnormal pressure
• Detection from Seismic – pre-drill prediction
• Stress and Strain – wellbore failure – lost circulation
  
  

Day 4

• Wellsite Geologist Responsibilities
• Sampling – types and preservation
• Quality control of acquired wellsite data
• Coring and Core Analysis
• Coring methods and equipment

• Whole Core and Sidewall Core
• Core handling and preservation
• Basic calculations – core-log integration
  
  

Day 5

• Wireline Logging Tools and Measurements
• Review of basic logging tools for lithology, porosity, saturation
• Resistivity and Invasion
• Wireline Log Interpretation
• Basic concepts – quicklook workflow
• Determination of lithology
• Shale – calculation of shale volume - effects and corrections

• Determination of porosity
• Determination of water saturation – resistivity effects – formation water
• Analysis techniques - crossplots

CDGA attendance certificate will be issued to all attendees completing minimum of 80% of the total course duration.