From the viewpoints of the operations geologist and the wellsite geologist, this course offers a comprehensive overview of wellsite operations. Understanding the job tasks that are normally carried out at the wellsite and how the vast amounts of data that are gathered are put to use are the main points of emphasis. Additionally, an overview of crucial drilling procedures that directly affect these disciplines will be covered in the course.

Course Objectives:

This 5-day course is intended for geologists that either have no previous well site experience or those that have no recent experience in well site geology. Emphasis is placed on providing the well site geologist with a basic understanding of their roles and responsibilities pertaining to the overall drilling operation both in the office and on the drilling rig. Participants will gain knowledge in preparing for a drilling operation, obtaining the best quality data during the drilling operation, providing onsite leadership, coordinating with other disciplines involved in the drilling operation and summarizing results at the end of the drilling program.

Who Should Attend?

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

Course Outlines:

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

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
Gas detection and analysis – types of gas – gas shows – equipment and methods

Coring and Core Analysis

Coring methods and equipment
Whole Core and Sidewall Core
Core handling and preservation
Basic calculations – core-log integration

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
Sampling – types and preservation
Quality control of acquired wellsite data

Wellsite Geologist Responsibilities

Wireline Logging Tools and Measurements

Review of basic logging tools for lithology, porosity, saturation
Resistivity and Invasion

Wireline Log Interpretation

Basic concepts – quick look 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

Cased Hole Logging

Production Monitoring and Reservoir Performance
Cement Bold Log Evaluation

Borehole Imaging

Dipmeter Principles
Dipmeter Interpretation

Filters