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Well Control and Blowout

Prevention

By

Prof. Abdel-Alim Hashem

Cairo University

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Who to Be Blame?

US Mother Nature Cause of Blowout

100 0 Not making sure hole is taking

the proper amount of mud

98 2 Lost circulation and not starting

fluid in annulus (Gas Cap)

98 2 Too low mud weight

98 2 Not enough casing set

98 2 Mechanical failure

90 10 Drilling into abnormally

pressure permeable zone

100 0 Failure to detect kick

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Objectives • The program aims at improving the knowledge

and skills of the participants to:

– Select surface equipment.

– Apply classic pressure control procedures.

– Recognize and control kicks.

– Apply pressure control procedures while tripping.

– Interpret surface pressures.

– Apply fluid dynamics to well control.

– Evaluate and kill wells with underground blowouts.

– Understand relief well operations.

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Contents

• Introduction

• Gas Migration

• Equipment

• Causes and indications of kicks

• Drillers and Weight methods

• Tripping, Stripping, Snubbing

• Classic well control

• Killing a well off bottom

• Annular pressure profiles

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Contents • Other well control methods

• Slim holes

• Oil-base mud

• Offshore operations

• Volumetric kill, dynamic kill, momentum kill, relief wells

• Underground blowouts

• Surface blowouts

• Case studies