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Oil Well Stimulation Techniques, Methods and Vessel Specification » OG101

Oil Well Stimulation Techniques, Methods and Vessel Specification

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Course Overview

The main objective of oil producers is to get the most volume of oil extracted from earth in an economically efficient and viable way. What are well stimulation techniques? Oil well stimulation techniques are currently an important part of sustained production efforts in most mature oil fields worldwide.

Ideally the oil production renders more gains and commercial benefits when the well has got enough energy to move fluids efficiently from the pay zone toward tubing and up to production facilities without the need to deploy artificial lift or to turn to a technique or treatment that improves it.

But in the real scenario this is not what happens with most of the oil and gas wells whether they are new or old. Why do we do Well Stimulation? Most of the wells during their life cycle require artificial lift to supplement the natural decrease in reservoir pressure and the tackling of production problems to allow formation damage elimination or reduction to restore the well productivity by the application of stimulation techniques.

Along with this it is important to cite as well challenging cases where reservoir permeability is so low that production of reservoir fluids to surface cannot be done without application of special stimulation techniques. When the stimulation scope is to remove wellbore damage by not exceeding fracture pressure, we are dealing with matrix stimulation.

By going further and focusing on creating high permeability flow channels that extends beyond wellbore damage radius at pressures greater than formation fracture pressure we are dealing with the fracture stimulation technique.

In a nutshell, the stimulation is an operation aiming to recover or sustain well productivity, consequently helping to increase the recovery factor.  Besides it is applied as well as preventive action for avoiding or delaying the problems affecting productivity such as sanding, fines migration, scale and organic blockages which are present during the well productive life.

Knowledge of basic reservoir engineering, the composition of rock and other formation properties is required for understanding the inflow performance relationship that governs the flow from porous media to surface facilities. This is key for candidate selection and finally linked to the screening of economic considerations.

To make sure the treatment design will be properly done, it is very important to know and identify the precise damage mechanism and the factor causing low production of the wells to be assessed and diagnosed.

This Zoe Training course cover among other topics; Understanding the features of porous media and other critical reservoir parameters, theory of matrix acidizing and fracturing, offshore equipment and operations, acidizing and fracturing design, lab requirements.

Course Objectives

The learning outcomes of this ‘Oil Well Stimulation Techniques, Methods and Vessel Specification’ training are:

  • Refresh basic reservoir engineering principles to engage stimulation methods theory
  • Grasp formation damage principles and cure
  • Understand interaction between treatment fluids and reservoir rock
  • Review concepts and principles of inflow performance relationship
  • Grasp knowledge to help design and run acidizing treatments
  • Acquire knowledge to help design and run hydraulic treatments
  • Review lab practices for stimulation processes
  • Be aware of environmental consequences of fluids used in stimulation treatments
  • Review stimulation operations quality control
  • Be acquainted with the vessels used for offshore stimulations
  • Know equipment and features of offshore stimulation operations
  • Be aware of HSE practices in offshore stimulation operations
  • Be familiarized with new technologies for stimulation

Training Methodology

For the oil and gas industry, role-specific training levels are recommended to be embraced and Zoe Talent Solutions fully address it with custom-built teaching suited for the audience. The method concentrates on individual needs and keep tracks of the student advancement throughout the training period; relying on the use of direct learning experiences as main factor to attain comprehension of a process and get further knowledge on a topic. We rely on high experience professionals as the source of talent to design, deliver and keep our contents and materials updated.

Productive Training session entails a twofold association, which besides normal theoretical lectures and open exchanges, means partnership between the instructor and the attendees. By splitting participants into groups, we foster working together within a promotive learning workplace. The use of Character switch encourages active participation when reaching milestones in training scope. All these approaches belong to Experiential learning.

Zoe Talent Solutions follows the ‘Do-Review-Learn-Apply’ model.

Organisational Benefits

The organisations having professionals undertaking this ‘Oil Well Stimulation Techniques, Methods and Vessel Specification’ course will benefit in the following ways:

  • It will assist the organization in pursuing its objectives of reaching the best possible drainage of a reservoir, both from the physical and profit point of view
  • The use of hydraulic fracturing is key for the commercial exploitation of tight oil reservoirs, and the proper use of it may render economically viable opportunities for the organization closer to being attainable
  • The entity will make use of more resources for addressing well stimulation candidates screening
  • Operator will evaluate effectiveness of the past treatments run and the feasibility of deploying alternative methods to continue tackling production problems
  • This training will reinforce the fact that working on a complex process involving the combination of several segment interactions, such as rock mechanics specialists, reservoir engineers and chemists will foster more synergy and teamwork within the organization
  • This training is influential to make sure the attending organization employees are fulfilling their work assignment in a proper way and up to the industry governing standards

Personal Benefits

Participants enrolling in this ‘Oil Well Stimulation Techniques, Methods and Vessel Specification’ training will derive the following benefits:

  • Grasp theory about matrix stimulation and hydraulic fracturing
  • Understand formation damage concepts
  • Refresh key reservoir engineering concepts
  • Be familiarized with nodal analysis
  • Know about the process for selecting wells for stimulation
  • Review operational procedures
  • Get familiarized with lab procedures for stimulations
  • Discuss proactively with service companies about HSE side of stimulation operations
  • Deliberate proactively with service companies about execution of stimulation operations
  • Be aware of environmental impact of chemicals used in stimulation operations
  • Be able to discuss stimulation cases and special situation via knowledge sharing

Who Should Attend?

  • Middle staff in charge of planning and managing production budget and operations
  • Senior technicians dealing with production operations
  • Well Stimulation Engineers
  • Production Operators
  • Well Completion Engineers
  • Geologists
  • Junior Engineers
  • Well Service Engineers
  • Reservoir Engineers

Course Outline

The course covers the main aspects of well control which are needed for participants to develop knowledge and practice skills. The contents to be engaged with are:

Module 1: Well Stimulation Overview

  • Background
  • When is a stimulation justified?
  • Matrix stimulation and Hydraulic fracturing

Module 2: Formation Damage

  • Reservoir rock properties
  • Reservoir and injected fluid properties
  • Darcy Equation
  • Skin factor
  • Processes causing formation damage
  • Formation damage types

Module 3: Formation Damage Diagnosis 

  • Initial indicators of formation damage
  • Drill stem tests
  • Resistivity logs
  • Production history
  • Field production behaviour
  • Nodal analysis
  • Formation damage quantification methods

Module 4: Matrix Stimulation 

  • Reactive Matrix Stimulation
  • Non-Reactive Matrix Stimulation
  • Candidate selection
  • Acidizing chemistry
  • Scale and organic deposits
  • Acidizing spotting and diversion methods
  • Carbonate acidizing
  • Sandstone acidizing
  • Operational features
  • HSE & Quality

Module 5: Hydraulic Fracturing

  • Fracturing design basics
  • Techniques
  • Fluids and materials used
  • Candidate selection
  • Operational features
  • Post frac events and monitoring
  • Coil tubing operations
  • HSE & Quality

Module 6: Acid Fracturing

  • Candidate selection
  • Operational features

Module 7: Lab Tests

  • Water Analysis
  • Core displacement
  • Acid solubility test
  • Spent acid
  • Acid and oil compatibility

Module 8: Stimulation Vessels

  • Equipment
  • Rigless Intervention
  • Specifications & Capacity
  • Features
  • Applications

Module 9: Knowledge Sharing

  • High water cut well stimulation
  • High temperature well case

Module 10: Other Technologies and Innovations Under Development

  • Ultrasonic stimulation
  • Coated propellant bars
  • Proppant surface treatment
  • Extreme overbalance
  • Reservoir conformance control

Module 11: Stimulation Operations Impact on Environment

  • Toxic discharges
  • Chemical Hazard ranking
  • Water contamination route
  • Disposal of produced water
  • Earthquake risk
  • Effective mitigation

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