The document provides an overview of the roles and responsibilities of an Operations Geologist. It describes how an Operations Geologist must conduct geological planning for wells, including risk analysis and data acquisition programs. During well execution, the geologist monitors coring, wireline logging, and pore pressure evaluation. Post-well duties include end of well reporting, data distribution, and archiving. The modern role of the Operations Geologist involves well planning, monitoring well execution, and reporting on end-of-well activities.

1. Operations
Geology
An Overview

2. Operations Geology
-> fundamental knowledge to meet the modern demands in well planning, well
execution, and well finalization, OBJECTIVES :
• CONDUCT
• MANAGE
• MONITOR
• ORGANIZE
• CONDUCT the geological planning for a well including risk
analysis, formation pressure forecasting and data
acquisitions programs
• ORGANIZE end of well activities including
reporting, lessons learned meetings and
final data distribution
• MANAGE contractor activities and maintain quality
control on data acquisition and operations
• MONITOR execution of the phase of a well, make
informed decisions, and manage data, and advise
on coring and wireline logging actitivities

3. 3
Operations Geology
OVERVIEW
Operations Geology include duties and responsibilities with respect to data management, well planning, subsurface hazard
identification and mitigation, contractor selection and management, HSE, data acquisition planning. During the well execution
phase, monitoring of coring, wireline logging, geosteering, and pore pressure evaluation. Post well duties including end of well
reporting, data distribution and archiving.
Operations Geology describe operations geologists
modern role

4. 01
02
03
4
The Operations Geologist Skill sets
• Planning
Be able to conduct the geological planning for a
well including risk analysis, formation pressure
forecasting, and data acquisition programs.
• Monitor
Be able to monitor the execution phase of the well ,
make informed decisions, manage data, and advise on
coring and wireline logging activities.
.
• Report
Be able to manage end of well activities including
reporting, lesson learned meetings, and final data
distribution.

5. Well Planning
Introduction to Operations Geology
• 1 • Overview of Well Planning
• 2 • Importance of Minimizing Non-Productive Time
(NPT)
• 3 • Understanding the Prospect
• 4 • Offset Well Data Acquisition and Interpretation
• 5 • Detailed Risk Assessment and Presentation of Risk
• What is the
modern day role of
the operations
geologist?
• Relationship to
wellsite geologist
and other key
personnel

6. 1
2
3
4
5
6
Operations
Geology
Well
Planning
• Documentation
• Required Documentation
• Finalization
• Pre-Well Meetings and Finalization
• Acquisition
• Data Acquisition Program (Wireline vs LWD)
• Communication
• IT and Communications
• AFE
• Well AFE (Authorization for Expenditure)
• Legal
• Permitting
6

7. 7
 Growth of Operations
Geology Data
 Types of Data
 Use of File Naming
Conventions and Directory
Structure
 Types of Contractors
 General Contracting Process
 Quality Assurance of
Contractors
 Processing of Coring and
Sidewall Coring
 Core Analysis Overview
 Picking Core Points ( Core
Point Picking)
 Picking Side Wall Core Points
(Sidewall Core Point
Picking)

8. Geosteering & ERD, Introduction to Formation Pressures
• 01
Geosteering and ERD
• Extended Reach Drilling (ERD)
• Operations Geology and
Geosteering
• 02
Formation Pressures and Terms
• Why is it important?
• Definition of Terms
• Units of Measurement
• Fluid Pressures (Pressures and Fluids)
• 03
Overview of Earth Stress
• Fracturing and Borehole Break-out
• 04
Pressures and Gradients
• Definitions
• Methods of Calculation
• Formation Density (OBG)
8

9. Fracture Pressures & Gradients & Depositional Mechanisms
• Fracture Pressures
and Gradients
• Definitions
• Influences on Fracture Pressures
• Techniques for Measuring Fracture Pressure
• Leak of Tests (LOTS) and Formation Integrity Tests
(FITS)
• Mud Losses and Lost Circulation
• Role in Well Planning
• More Terminology
• State of Balance
• Static and Dyanmic Pressures, Equivalent Circulating
• Density (ECD), and Equivalent State Density (ESD)
• Swab and Surge
• Other Drilling Related Terminology
• Syndepositional/Primary
Mechanisms
• Undercompaction/Compaction Disequilibrium
• Syntectonic/Lateral Compressive Stress
• Role of Chemical and Diagenetic Changes
• Post Depositional
/Secondary Mechanisms
• Pressure Charging Transfer
• Centroid Effect
• Acquathermal
• Structural/Tectonic
• Role of Faulting
• Hydrocarbon Generation and Cracking
• Salt and Shale Diapirs
• Hydrocarbon Buoyancy 9

10. 1
2
3
4
5
10
• Wellsite Formation
Pressure Evaluation
• Quantitative
Analysis Methods
• Introduction and Overview
• Fundamental Aspects
• Ratio Method
• Equivalent Depth or Matrix Stress Methods
• Eaton Method
• Common Problems
• What method should be used?
• Fracture Pressure
Measurements
• Ex Drilling Indicators and DXC
• Shale Characteristics
• Hole Conditions
• Cuttings and Cavings Analysis
• Gas Event Monitoring
• Geothermal Gradient/Temperature
• Mud Resistivity/Conductivity
• Development
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appellantur cu vim. Harum melius persequeris nec
id. Et indoctum reprimique scribentur vis.
• Evaluation
Practices
• Post Well Evaluation
• Round-up and Finalization
Evaluation of Formation Pressure While
Using Wellsite Data
• 5 Points

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