CDGA

This Stuck Pipe Prevention & Fishing Operations seminar provides a comprehensive coverage in the industry for understanding and preventing the underlying causes of Stuck Pipe, Wellbore Instability, Loss Circulation, and other sources of non-productive time (NPT) in drilling operations. The seminar also focuses on correct responses by individuals and teams, early warning signs, and minimizing the impact to drilling operations. Through world-class presentations, practical discussion, and the best reference and instructional materials available, delegates hone their knowledge of basic drilling technology and how it relates to avoiding NPT. Preventing stuck pipe incidents can save thousands of dollars in non-productive time. Stuck Pipe Prevention covers topics to eliminate or greatly reduce stuck pipe incidents on your rig. This seminar emphasizes on the prevention of stuck pipe and the team concept is used throughout the seminar, explaining the contribution and value of every crew member in the goal of keeping the pipe free.

The Training Course Will Highlight ?

This training seminar will feature:

How to predict and make the contingency plan to prevent the stuck pipe
How to write the proper report for the stuck pipe incidents

Training Objective

By the end of this training seminar, participants will be able to:

Identify mechanisms and risk factors that lead to stuck pipe incidents (Wellbore Instability, Hole Cleaning, Differential Sticking, and Wellbore Geometry)

Assess mechanics of wellbore stresses and the impact on wellbore stability
Analyze trends to identify early warning signs of developing wellbore problems
Implement effective drilling and tripping practices
Make cost-effective choices in planning fishing operations

Target Audience

This training seminar is suitable to a wide range of professionals but will greatly benefit:

Mud Engineers
Drilling Supervisors
Drilling Engineers
Tool Pushers
Senior Drillers
Drilling Superintendents

Training Methods

This training seminar will utilize a variety of proven adult learning techniques to ensure maximum understanding, comprehension and retention of the information presented. The daily workshops will be highly interactive and participative. The seminar will include all types of stuck pipe and the recommended procedures for preventing by analyzing the operations, how to free the stuck pipe in case of occurrence, hole cleaning and impact on the problems, and fishing tools and jar energize.

Daily Agenda

DAY 1

Rock Mechanics

Stress –strain diagrams
Geo-mechanics and structural geology
Mechanics and causes of folding
Mechanics and causes of faulting and fractures
Factors affecting the bore hole stability
Induced factors affecting bore hole stability
Drilling fluid effect on bore hole stability
Shale stabilization

Wellbore Stability
- Mechanical conditions
- Shale deposition and sedimentary rocks
- Clay Chemistry
- The Earth’s stresses
- Mechanical stress failure
- Chemical interactions
- Physical interactions
- Well site Analysis

DAY 2

What is Stuck Pipe?
- Primary cause of downtime
- See warning signs and respond
- Stuck pipe is almost always preventable
- Definition

- Causes
- Mechanical
- Formation problems
- Human error—lack of communication
What causes Stuck Pipe?
- Human factors
- Lack of team work
- Lack of communication
- Lack of planning
- Failure to read warning signs
- Failure to follow procedures
- Most stuck pipe situations happen at tour change
- Use tour change form to record conditions and identify trends
Types of sticking
- Formational sticking
- Differential sticking
- Cause for most stuck pipe situations
- Drilling overbalance most common cause
- Geopressured formations

- Reactive formations
- Unconsolidated formations
- Mobile formations
- Fractured or faulted formations
- Mechanical sticking
- Key seating
- Wellbore geometry
- Under-gauge hole
- Inadequate hole cleaning
- Junk in the hole
- Cement problems
- Casing problems
Differential sticking
- Definition
- Most common in sandstone and high permeability formations
- Why circulate fluids in hole?
- Remove cuttings
- Seal the wellbore

Control well pressure
Mud formulation
Drilled overbalanced defined
Filter cake defined
Drill string flexing defined
Avoiding differential sticking
Rotate
Circulate
Move drill string up and down
Communicate
Differential sticking definition

Case Histories (workshop)

DAY 3

Warning Signs
- Three mechanisms—definitions and causes
- Hole pack off or bridge mechanism
- Differential mechanism
- Geometry mechanism
- The hole is talking—definitions and descriptions

- Torque changes
- String weight changes
- Circulation rate changes
- Pump pressure changes
- Mud properties
- Changes at the shakers
- Your records indicate changes
- Name the mechanism—simulation
- Talk to others around the rig
- Gather clues
- Come up with a diagnosis
Prevention plan
- Review three sticking mechanisms—definitions and causes
- Differential
- Wellbore geometry
- Hole pack off/bridging
Have a stuck pipe prevention plan

Team work and communication
Mud must be ready and conditioned properly when it returns to the surface
Chemicals and mixing agents must be on hand to avoid delays
Hydraulics are important
Shaker hand should communicate what’s shaking to the driller
Mud logger examines cuttings communicate with the driller

Case Histories (workshop)

DAY 4

Fishing Operations
- Twist Off Cases
- Fracture of the drill pipe
- Fracture of the threads joining the drill collars or the drill pipe
- Overshot
- Free point indicator
- Reserve twist
- Small explosive charge
- Addition of jars in the fishing string
- Washing over
- Plugging the hole
- Side tracked hole (dog-leg)
Broken bit cases

Break away of one of the conical cutters & leg down the hole with all the bearing
Using magnet for fishing
Using hollow basket
Using explosive charge for too large pieces of metals
Using another bit