deepwater well contorl€¦ · e.g. mpd and iadc wellcap and iwcf will be referenced. ... day one...

C o n t a c t U s f o r S p e c i a l C o r p o r a t e R a t e N o w !

DEEPWATER

WELL CONTORL

Course Overview

This course covers the key aspects of Deepwater Well

Control through the media of:-

1) Lectures (the Trainer began his career 35 years ago and

has worked on Well Control Projects Worldwide, on Drill

Ships in South East Asia and has advised and taught many

Operators & Drilling Contractors regarding Deepwater

wells. He studied Blowouts at PhD Level and is IADC

WellCap Plus Certified);

2) PowerPoints (written by the Trainer);

3) Videos;

4) Case history examples;

5) Teamwork exercises;

6) Macondo Deepwater Horizon Case History;

7) Other Case Histories.

New technologies available to the Industry are also covered

e.g. MPD and IADC WellCap and IWCF will be referenced.

Who Should Attend

We follow the principles inherent within the following organisations regarding API Standard 53, OGP 476

(Recommendations for enhancements to well control training), IADC Well Cap and Well Sharp (specifically for barrier

management and risk management) and IADC Deepwater Well Control Guidelines & various SPE Papers on well

control events and DEA formulae:-

DEEPWATER WELL CONTROL

Drilling Engineers; Senior Drilling Engineers; Drilling Superintendents; Drilling Managers, Integrated Services Drilling

Contractors, IPM Service Companies, Derrick-men, Assistant Drillers, Drillers, Toolpushers, Mud E gi ee s, OIM’s.

Provision is also made for delegates to discuss any aspect

of deepwater well control and operations which are

pertinent to their particular up-coming projects in order to

secure well control avoidance and what to do with an influx

should one occur.

For each subject area, benefits of certain industry practices

are covered in detail as well as why difficulties are

encountered on the rig.

Aims & Objectives

By the end of the course, delegates will understand the key drivers behind successful Deepwater Well Control Planning &

Operations so that the well to be drilled is a success first time and without incident. However, should an incident occur

delegates ill lea hat’s e ui ed to i g the ell safely a k u de control. Delegates will also benefit from

reviewing previous deepwater well control events.

Consultancy services can be provided both before the course (e.g. certain wells / problems can be looked at), during the

course (e.g. certain problems can be reviewed) or after the course (e.g. advice / well review) should the delegates

require.

IDEAS CREATE DRILLING SOLUTIONS

visit us at www.wellideas.com

Standards

Your Dedicated Coach

Overview

“easo ed p ofessio al ith 35 yea s’ o ld ide experience on drill-ships, semi-submersibles, tender-assist

units, platforms, jack-ups and land rigs.

Extensive experience both onshore and offshore in

engineering and operations for Operators and Drilling

Contractors on exploration, appraisal & development

wells.

Extensive risk assessment, advisory, planning and rig-site

work experience ranging from Drilling Engineer through to

Drilling Supervisor, Superintendent & Drilling Manager.

Training

Training experience worldwide ranges across

Operators, Drilling Contractors and Service

Companies both in-house and public in the

following areas :-

HPHT

Stuck Pipe Prevention & Fishing

Deepwater Well Engineering

Deepwater Operations

Directional Drilling

Horizontal & Multilateral Wells

Accelerated Drilling Programmes for Drilling

Contractors

Graduate Drilling Engineering for Operators

Optimised Drilling Practices

Well Planning & Engineering

Well Construction

Well Control (Advanced, Understanding,

Deepwater & HPHT)

Consultancy

Engineering & Operations Advisor to

Operators, Drilling Contractors, Banks &

Insurance Companies worldwide re Drilling &

Field Development, Risk & Blowouts

Hazard Analysis

Offshore Operations

Technical Advisor for HPHT

Developments

Well Control

Technical Advisor for Deepwater

Operations

Project

Project Manager for HPHT Field

Development; Standard Field

Development

Production Optimisation

Risk Mitigation

Brownfield Re-development

Deepwater

Well Control

Management Systems

Michael Gibson (PhD)




SECTION 1: WELL CONTROL REVIEW

During this Introductory Section we shall

review the following:-

Definitions

Primary Well Control

Where the constant 0.052 comes from

Temperature / Mud Gradients

Porosity, Permeability, Geology &

Overburden

Formation Pressures, Reservoirs

Hydrostatic Pressure, Casing Shoe Pressure

Dynamic Pressure & APL

Slow Circulating Rates

Kick Definitions

Kick Pressures: Shut-In Conditions

Trip Tank

Casing Capacity

Volumes, Capacities, Displacements &

Calculations

Casing Joint & Float Failure



DAY ONE

SECTION 2: CAUSES OF KICKS & INDICATORS

During this section we will look at trapped and

reservoir pressures and also induced (e.g.

swabbed pressures) along with those

indicators which may indicate we have taken a

kick.

SECTION 3: SHUT-IN PROCEDURES

During this section we will look at the two

ways of shutting-in a well: - soft shut-in and

hard shut-i a d hy it’s ad a tageous to utilise the hard-shut-in method.

SECTION 4: WELL INTEGRITY TESTING – LOT’s & FIT’s

During this section we will look at the key

differences between Leak-Off Tests and

Formation Integrity Tests. In particular we will

look at: -

Methodology

Maximum Mud Weight

MAASP and what it means

6th Generation ultra-deepwater semi-

submersible (Courtesy of Maersk)


SECTION 5: RISER MARGIN

During this section we will look at what riser margin is

and the following:-

How to carry out the calculations

Maximum Mud Weight

Riser margin contingencies

SECTION 6: CHOKE LINE FRICTION

During this section we will look at what choke line

friction is and the following:-

Definition

The 3 ways of finding Choke Line Friction

Initial Dynamic MAASP & Initial Dynamic Casing

Pressures

SECTION 7: LOST CIRCULATION

This is an important area not just because of loss of

hydrostatic pressure (which could very well lead to an

influx) but also because lost circulation is often

asso iated ith stu k pipe. A d you do ’t a t to e stu k he you’ e a o -going influx event.

We look at: -

Seepage Losses

Partial Losses

Intermediate Losses

Severe Losses

Total Losses



DAY TWO

Apart from the loss rate, we also look at the different

types of LCM that can be pumped as well as Gunk

Plugs and Cement Plugs.

SECTION 8: SHALLOW GAS & DIVERTING

Shallow gas can have the effect of making the semi-

submersible or drill-ship unstable, with the possible

risk of capsizing. There is also the risk of explosion.

This section looks at how to prevent shallow gas

blowouts from occurring, what ideal diversion

procedures and practices should be and what safety

measures should be taken on-board the rig and

onshore. The advantages of drilling riser-less are also

covered.

SECTION 9: KICK TOLERANCE

Kick tolerance is sometimes a difficult subject to

understand. There are two ways of looking at kick

tole a e. O e is f o the pe spe ti e of Ki k I te sity , i.e. ho u h a the ud e eighted up (to kill the well) without breaking down the casing

shoe and the other is how many barrels of influx can

be taken and circulated out without breaking down

the casing shoe. We will look at both of these areas

during the course, along with: -

The two critical locations for the influx

Key factors

Calculations

Riser System – Semi-submersible Rig

Sedco 700 Shallow Gas Blowout Offshore Nigeria


SECTION 10: SUBSEA WELL CONTROL SHEETS

& FORMULAE

During this section we will review the industry-

approved subsea well control sheets and formulae.

The sheets cover all applicable formulae and steps

taken throughout the well kill process.

Copies of the well kill sheets and formulae sheets will

be given to delegates courtesy of soft copy for use

during the course and for later use on board the rig.

SECTION 11: WELL KILL METHODS

Du i g this se tio e o e the D ille ’s, W & W, Concurrent, Volumetric & Bullheading Methods of

killing a well with associated key areas.

Deepwater Well Control Issues

Shut-in Procedure whilst drilling and tripping

Review of U-tube principle

The effect permeability has on shut-in pressure

build-up

Shut-in pressures



DAY THREE

SECTION 11: WELL KILL METHODS(continued)

Gas Migration

Overview of kill methods & pump start-up

Selecting the kill rate

Mud Gas Separator Overloading

Maximum Kill Rate vs. Choke Pressure

“CR’s Choke Line Friction Pressures

Gas-Mud swap-out

BOP Separator Effect

Keeping the BHP constant when mud enters the

choke line

The effect of CLF on MAASP

Gas in the Riser

Stack Gas Clearing

The D ille ’s Method of esto i g the ell The Weight & Wait Method of restoring the well

The Concurrent Method of restoring the well

Bull-heading

The Static Volumetric Method

The Dynamic Volumetric Method

Gas Lubrication

Stripping

We will also look at the advantages and disadvantages

of each method.

SECTION 12: PRESSURE CHANGES WHEN

PUMPING KILL MUD DOWN STRING

This section is actually a worked example. During this

exercise we will look at pump problems and reducing

pump speed from 30 SPM to 25 SPM and the resulting

dynamic pressure.

Schematic of Subsea BOP Stack


SECTION 13: TRAPPED GAS IN BOP STACK

During this section we will look at how to remove

trapped gas in the subsea BOP stack.

SECTION 14: KEY DEEPWATER

CONSIDERATIONS

During this section we will be focusing upon those

deepwater considerations which are key to deepwater

well control.

Why fracture gradients are typically weaker on

deepwater wells (explanation and demonstrative

calculation)

Shallow water flow / mitigating SWF problems /

SWF procedures

Riser disconnect calculations / Riser margin

Deepwater diverter considerations

Weak sea-bed / Site evaluation

Using trends to identify downhole situations

Changes in Mud Weight, PV & YP with changes in

temperature

Temperature profiles

Gas behaviour in WBM & OBM

Swab Kick

Phase Behaviour

Undetected Kicks

Influx Volume vs Pit Gain (WBM & OBM)



DAY FOUR

SECTION 14: KEY DEEPWATER

CONSIDERATIONS (Continued)

Key practices to prevent the well from unloading

Situations which can mask a small influx

Rig & BOP considerations

Fingerprinting

SECTION 15: HYDRATES

In this section we will discuss how and why hydrates

fo , hy e do ’t a t the a d ho to p e e t their formation (drilling fluid additives, temperatures,

glycol injection etc.).

Subsea BOP Stack

Example of Fingerprinting: Trip Tank on Connections

Hydrate formation possible within BOP

stack upon cessation of circulation


SECTION 16: FORMATION CHARGING

In this section we will look at the causes of formation

charging, how and why it happens, what apparent

losses mean, what apparent gains mean and how to

determine whether we have an influx – or if the

formation has simply been charged.

SECTION 17: UNDERGROUND BLOWOUTS

Underground blowouts are potentially catastrophic,

particularly if formation strength is weak throughout

large intervals. They can take months to solve, and

with some latest generation rigs / drill-ships costing a

s all fo tu e o a daily asis, they’ e the last thi g that anyone needs, particularly in the new era of low

oil prices. Throughout this section we look at the

following: -

Type 1: High Pressure ascending to Low Pressure

Zone & breaking down the formation

Type 2: High Pressure descending to Low Pressure

Zone & breaking down the formation

Indicators

Kill Considerations

Kill Methods (e.g. Plugs, Dynamic Kill)

SECTION 18: TEAMWORK EXERCISES

Teamwork is a crucial factor in the preventing and

solving of Deepwater Well Control Events. Just like we

do offsho e, e’ e goi g to o lude the ou se through a number of Teamwork Exercises.



DAY FIVE

Teamwork Exercise 1: Deepwater Shallow Gas Blowout

Case History

Teamwork Exercise 2: Deepwater Underground

Blowout Case History

Teamwork Exercise 3: The Macondo Deepwater

Horizon Blowout Case History

Each team will present their findings following their

studies of the Case Histories.

Offshore Teamwork

IDEAS (Independent Drilling Engineering

AssociateS) is a thinking company. It focuses its

in-depth and holistic knowledge, breadth of

experience and expertise onto operators, drilling

contractors and service o pa ies’ drilling

engineering and related work requirements, to

provide top quality fast turnaround bespoke work

packages on either an ad-hoc or long term basis,

24 hrs per day / 365 days per year, worldwide.

Through applying creative thought, ingenuity,

experience, integrative life-cycle considerations,

fully focused dedication and commitment to

problem-solving, IDEAS aim to provide the most

professional, solution-oriented, cost-effective

drilling engineering and related services

anywhere around the world at any time.

Objectively.

Independently.

Quickly.

Independent Drilling Engineering AssociateS

IDEAS CREATE SOLUTIONS


Contact us today for In-House Drilling

Solutions to maximise safety, efficiency,

performance, productivity & minimise cost!

For more information, please email us at

[email protected]

Contact Deta i l s

I am interested to register for Deepwater Well Control

I would like to contact IDEAS for In-House Training Solutions

Other enquiry

Name :

Job Title :

Company :

Department :

Mobile / DID :

Email :

Independent Drilling Engineering

Associates Singapore

18 Sin Ming Lane

#08-26 Midview City

Singapore 573960

Tel: +65 6659 0272

Email: [email protected]

Website: www.wellideas.com

I would like to contact IDEAS for In-House Consultancy Solutions

IDEAS CREATE SOLUTIONS


Independent Drilling Engineering

Associates Scotland

1 Mill Court

Gourdon Montrose DD10 0NL

Scotland, United Kingdom

Tel: +44 1561 360358

Email: [email protected]

Website: www.wellideas.com

deepwater well contorl€¦ · e.g. mpd and iadc wellcap and iwcf will be referenced. ... day one...

Documents