Advanced HPHT Well Intervention Operation

Introduction

A work performed after the original completion of the well is a minor work-over or intervention while other operations carried out in oil or gas well during its life cycle can be termed as a major work over if the completion is pulled which will change the configuration of the completion of the well. In HPHT wells there are a lot of particularities conducting to a very expensive management of the field / reservoir due to necessity of using special equipment and tools able to withstand high pressure and temperature. The intervention in such wells calls for special metal alloys, high resistant elastomers if used as part of tool or equipment and top experienced personnel to work with. Primarily in this training course, we are concerned with problems associated with the completion string designed particularly for HPHT wells. Production logging will help in well problem diagnosis using wireline or coiled tubing to run logging tools and all problems connected with the reservoir for adjustments and further production from the wells. In general, problems associated with the completion string can be classified into problems which arise in the tubing bore and which can be corrected through tubing operations and problems which necessitate the retrieval of the completion string from the well. This Advanced HPHT Well Intervention Operation course will provide a good approach on the impact of interventions and completion design in maximizing field production and increasing recoverable reserves. It also emphasizes the importance of intervention methods (slickline, electrical / wire-line line and coiled tubing) all designed and manufactured to work in hostile environment with HPHT, during the whole lifetime of the well in-order to keep the well on production with profitable rates.

The training course will feature:

• Introduction to the variable nature of well interventions in HPHT wells
• Proper completion string design and installation in hostile conditions
• Identify Wireline best practices and applications for HPHT wells
• Identify Coiled Tubing demands and applications in HPHT wells
• Appraise well control barrier philosophy, SOP and testing during well interventions in HPHT wells which are more strict and accurate

Objectives

By the end of this Advanced HPHT Well Intervention Operation course, participants will be familiar on the following:

• Variable nature of well interventions in HPHT wells
• Describe the inherent risks and need for careful diagnostics, planning and supervision
• Emphasize the economic implications of a work-over in terms of the need to protect the well production or injection capacity
• List and describe the equipment and operational concepts involved in wireline and coiled tubing operations
• Know the well control barrier principles for these types of wells
• Identify three barriers methodology during well intervention and applicability in HPHT wells
• Know well control barrier classification for a different type of intervention
• Fully understand the procedures for slick line and or wire-line operation and what are the equipment and downhole tools
• Describe well-pressure control and safety issues originated from HPHT wells and associated to slickline /wire-line
• State the limitations on successful wire-line operation imposed by depth, hole angle and dog leg severity the high pressure and temperature

Training Methodology

This HPHT well intervention training course will be interactive and presented with a lot of materials escorted by a manual in PDF. Teaching methods include several examples of actual well intervention programs in HPHT wells.

Who Should Attend?

This training course is the proper one for professionals and will greatly benefit:

• Petroleum Engineers
• Production Engineers
• Production Technologists
• Production Supervisors and Foremen
• Completion Supervisors and Engineers
• Drilling Supervisors and Engineers
• Workover and Well Service Supervisors
• Service Co-Engineers

Course Outline

Day 1: Well Completion Options for HPHT wells 

• Well Completion Design and Considerations for HPHT wells

• Completion components for HPHT wells

• Reservoir Considerations

• Mechanical Considerations

• Classification of Completions

Day 2: Barriers and Containment Devices 

• Barrier Terminology

• Barriers and containment devices

• Barrier Envelope

• Barrier integrity testing

• Flow Control Devices (mechanical barriers)

• Well kill principles and procedures

Day 3: Slick Line, and Wire Tools and Applications 

• Introduction to wireline

• Types of wireline

• Basic tool strings

• Introduction to wireline fishing

• Stuffing box

• Wireline valve (bop)

• Standard braided line rig-up

• Wireline applications and operational considerations

Day 4: Coiled Tubing Equipment and Applications 

• Coiled Tubing Surface and Subsurface components

• Coiled Tubing applications

• Cleaning operations with CT

• Well Back Flow (nitrogen lift)

Day 5: PCE Equipment, Tools, and BHA’S.  Procedures 

• PCE slickline /wireline

• PCE for Coiled Tubing units

• Minimum control elements for wireline and Coiled Tubing

• Pressure testing of all systems per stages

• Contingency plan for slickline and wireline operations

• Contingency Plan for Coiled Tubing

• X- mas tree review for HPHT wells. Repairs