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Well Control for Drilling Experts

This document discusses well control and blowout prevention. It covers primary and secondary well control methods, warning signs of a kick, well killing procedures, blowout prevention equipment including blowout preventers (BOPs), and BOP stack arrangements. Maintaining well control and using blowout preventers properly is crucial to prevent losses of life, equipment, reservoir fluids, environmental damage, and control costs during drilling operations.

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ASKY P
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110 views51 pages

Well Control for Drilling Experts

This document discusses well control and blowout prevention. It covers primary and secondary well control methods, warning signs of a kick, well killing procedures, blowout prevention equipment including blowout preventers (BOPs), and BOP stack arrangements. Maintaining well control and using blowout preventers properly is crucial to prevent losses of life, equipment, reservoir fluids, environmental damage, and control costs during drilling operations.

Uploaded by

ASKY P
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Ch.

6 Well Control
WELL CONTROL
1. Blowout Prevention
2. Primary Control
3. Warning Signs of a Kick
4. Secondary Control
5. Well Killing Procedures
6. BOP Equipment
7. BOP Stack Arrangements
Importance of Blowout Prevention

• Loss of Life
• Loss of Rig and Equipment
• Loss of Reservoir Fluids
• Damage to the Environment
• Cost of Controlling Well
Primary Control
Secondary Control
2. PRIMARY CONTROL
• Low Mudweight :
• Gas Cutting
• Solids Removal
• Dilution

• Loss of Mud height


• Tripping
• Swabbing
• Lost Circulation
Loss of Density
Effect of gas
Loss of Mud Height
Trip Tank
3. WARNING SIGNS OF A KICK
• Primary Indicators :
• Flowrate Increase
• Pit Volume Increase
• Flowing Well
• Improper Hole Fillup During Trips

• Secondary Indicators :
• Changes in Pump Pressure
• Gas Cut Mud
• Drilling Break
Well Killing
Operation
BOP and Choke Manifold
4. SECONDARY CONTROL
• Shut in Procedure :
• Whilst Drilling
• Whilst Tripping
• Interpretation Pressures
• Interpretation of Type of Fluid
• Kill Mud Weight
• Factors Affecting Pann
• MAASP
5. WELL CONTROL PROCEDURE

• Pipe Out of Hole :


• Snubbing

• Pipe in the Hole :


• One Circulation Method
• Drillers Method
Calculating Kill Mud Weight
Drillpipe and Annulus
Pressures
Impact of
Kick Volume on
Annulus Pressure
Internal Blowout
Effect of Gas Migration
Standpipe Pressures
Choke Pressures
Well Killing
Operation
(One Circ. Method)
Well Killing
Operation
(Drillers Method)
6. BOP EQUIPMENT
• Annular Preventer
• Ram Type Preventer
• Drilling Spools
• Casing Head Housing
• Diverter System
• Choke and Kill Lines
• Choke Manifold
• Choke Device
• Hydraulic Power Pack
• Internal BOP
Annular Preventer Element
Annular Preventer
Operation of Annular Preventer
Ram Type Preventer
Ram Type Preventer
Ram faces
Drilling Spool
Diverter System
Choke Manifold
Chokes
BOP System
BOP Configuration
Ram Configuration
7. BOP STACK ARRANGEMENTS

• Low Presure Systems


• Normal Pressure Systems
• High Pressure Systems
• Abnormally High Pressure Systems
BOP System
BOP System
BOP System
BOP
System

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