Course description

This course covers all major aspects of HPHT well construction projects. It covers the theories, technicalities and practicalities of HPHT wells complete with impending risks and challenges. This course is also equipped with case studies on both successful HPHT well projects and the mistakes of past projects. Special emphasis is placed on Geopressure detection analysis.
This course aims to equip participants with the knowledge and understanding on ways to overcome the challenges and risks in HPHT wells while elevating the effectiveness of their HPHT wells practices, giving special emphasis on methods to detect and analyse Geopressures in HPHT wells.

Audience

Drilling professionals with well design and operations experience desiring an understanding of the challenges faced in the HPHT drilling environment. This class can serve as an introduction to both early career and experienced drilling professionals for HPHT drilling technology.

Prerequisites

Course content

Introduction
Introduction to the HPHT environment, its history and how HPHT is currently defined. The geological aspects of the HPHT environment with a detailed look at the well behavior and the material aspects when dealing with elevated pressures and temperatures.
•    Welcome and introductions.
•    Defining the HPHT environment.
•    History of HPHT drilling operations.
•    Geological & geophysical aspects of high pressures and temperatures.
•    Design challenges with HPHT Wells
•    Behavior of gasses at elevated pressures and temperatures
•    Behavior of liquids at elevated pressures and temperatures
•    Behavior of metals at elevated pressures and temperatures
•    Behavior of elastomers at elevated pressures and temperatures
•    Exercises; Gas behaviour calculations, Density Calculations


Well Design
Well design standards and well design for HPHT wells.
•    Applicable well design, drilling standards, procedures, and guidelines.
•    Creating a Basis of Well Design
•    Formation pressures and pressure ramps
•    Well trajectories
•    Casing design aspects for high temperatures
•    Well design aspects and their impact on well control
•    Wellheads and wellhead growth
•    Primary Cementing / Remedial Cementing
•    Drilling Fluids (Oil Based / Water Based / Formate Brines)
•    Drillstring Design
•    Data Collection (LWD / MWD Tools / Drilling Data)
•    Well Integrity

  • Well integrity standards.
  • Integrity specifications for HPHT
  • Barriers and Barrier Elements
  • Leaks
  • Corrosion
  • Annular Pressure
  • Integrity Failures
  • Failure analysis and FMECA

•    Contingency Planning
•    Exercises: Tubular expansion, Drillstring design, Fluid challenges.

Rig Equipment
Rig requirements for HPHT operations. A detailed review of the surface equipment requirements to drill an HPHT well. This also includes some common recommendations for the use of Managed Pressure Drilling Equipment.
•    BOP specifications, configurations, and test requirements
•    HPHT rig choke and standpipe manifolds,
•    Mud Gas Separator sizing
•    Temperature safety aspects
•    Mud coolers
•    Drilling fluid System
•    Bulk Systems (Barite – Cement – Bentonite)
•    Barite mixing requirements
•    Solids Control
•    Managed Pressure Drilling Equipment

  • MPD Flow paths
  • RCD
  • MPD Choke Manifolds
  • Flow Meters
  • MPD gas handling
  • MPD Control Systems

•    Exercises; MGS Sizing, Mud weight increases and decreases, Mud Coolers.

Well Operations
Operational aspects of drilling an HPHT well
•    The HPHT Section of the well
•    Drilling hydraulics and ECD
•    Fluid compressibility & density
•    Barite Sag
•    Pit Discipline
•    Fingerprinting
•    Gas Solubility
•    Well control differences and challenges with HPHT wells
•    Ballooning, wellbore breathing and super charging
•    Temperature Monitoring
•    Drilling and Tripping Operations
•    Data Collection and MWD/LWD
•    Casing and Cementing Operations
•    Managed Pressure Drilling
•    Exercises; well control, Barite requirements, barite sag, Gas solubility

Well Evaluation and Completions
Well evaluation aspects from mud logging through well testing. Introduction to completion operations and well clean up.
•    HPHT Well Evaluation Logging and coring operations

  • Mud Logging
  • Wireline logging
  • MWD – LWD Tools
  • Coring operations
  • Well Testing

•    Tubing and Wellhead material selection
•    Wellhead growth and the seals
•    Tubing Movement
•    HPHT completions
•    Well Control during well testing
•    Flow Control Equipment
•    Sand Production
•    Erosion
•    Reservoir Depletion
•    Workovers
•    Exercises; Material Selection, Reservoir Depletion, Workovers.

 

comments (0)

leave a comment