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1 Multilateral Systems BakerO il Tools Daniel Craig Well Bore Construction Engineering Manager Baker Hughes Inc. November 12, 2007 Multilateral Systems
Transcript of Multilateral Systems, pumpsandpipesmdhc
1Multilateral Systems
Baker Oil Tools
Daniel CraigWell Bore Construction Engineering Manager
Baker Hughes Inc.November 12, 2007
Multilateral Systems
2Multilateral Systems
Baker Oil Tools
» What is a Multilateral well?
» What is the value to the customer?
» Baker Oil Tools Multilateral Systems
Topics
3Multilateral Systems
Baker Oil ToolsWhat is a Multilateral Well?
A multilateral well is typically a well connecting two or more “standard well types”.
VerticalVertical DeviatedDeviated HorizontalHorizontal MultilateralMultilateral
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Typical Multilateral Configurations
Dual Stacked
Trilateral Fork Herringbone
What is a Multilateral Well?
5Multilateral Systems
Baker Oil Tools
Enhance Existing Production with a Multilateral Well.
What is the Value to the Customer ?
6Multilateral Systems
Baker Oil Tools
162,660’ Drilled = 125,248’ within the producing zones from 8 wells on 2 pads!
LM19 & LM17
Pads
LM19 Pad53,827 ft Drilled
43,693 Net pay (81%)4 Multilateral wells
LM17 Pad108,833 ft Drilled
81,555 Net pay (75%) 4 Multilateral wells
What is the Value to the Customer ?
7Multilateral Systems
Baker Oil ToolsSimplicity Pays
What does the TAML What does the TAML classifications mean?classifications mean?
(Technical Advancement of Multilaterals)(Technical Advancement of Multilaterals)
8Multilateral Systems
Baker Oil ToolsTAML Levels
Level 2 - Main bore cased and cemented, Lateral bore open
Level 3 - Main bore cased and cemented; Lateral bore cased but NOT cemented
Level 4 - Both main bore and lateral bore cased and cement
Level 5 - Pressure integrity at the junction achieved with completion equipment
Level 6 - Pressure integrity at the junction achieved with casing
• Level 1 - Open/Unsupported junction
9Multilateral Systems
Baker Oil ToolsTAML Level 1
Open / Unsupported junction
ADVANTAGES•Simplest construction
•Stable in hard formations
DISADVANTAGES • Not stable in unconsolidated formations
• Limited life due to hole collapse• No positive re-entry capability
• Limited completion options•Not pressure containing
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Baker Oil ToolsTAML Level 2 Main bore cased and cemented
Lateral bore open
ADVANTAGES• Permanent datum point in the well
• Multiple laterals• Controlled re-entry
DISADVANTAGES• Limited to new well applications
Limited completion options•No pressure integrity at the junction
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Baker Oil ToolsTAML Levels 3
Main bore cased and cementedLateral bore cased but NOT cemented
ADVANTAGES• New well and existing well applications
• Permanent datum point in the well• Multiple laterals• Positive re-entry
• Open hole support
DISADVANTAGES•No pressure integrity at the junction
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Baker Oil Tools
Level 3 HOOK Hanger
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Lower Lateral
4-1/2" 12.6#Slotted Liner
Middle LateralLateral Entry Module
Upper Lateral
4-1/2" 12.6#Slotted Liner
Lateral Entry Module
B HOOK Hanger4-1/2" X 7-5/8"
B HOOK Hanger4-1/2" X 7-5/8"
4-1/2" 12.6#Slotted Liner
LEMDiverter and Isolation Sleeve
Lateral DiverterLateral
Isolation Sleeve
Lateral Entry Module (LEM)
Level 3 HOOK Hanger
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Baker Oil ToolsTAML Level 4
Both main bore and lateral bore cased and cement
ADVANTAGES• New well and existing well applications
• Permanent datum point in the well• Multiple laterals• Positive re-entry
• Open hole support• Adaptable to all formation types
DISADVANTAGES•No pressure integrity at the junction
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Baker Oil ToolsTAML Level 5
Pressure integrity at the junction achieved with completion equipment
(Cement IS NOT Acceptable )ADVANTAGES
• New well and remedial applications• Permanent datum point in the well
• Positive re-entry• Open hole support
• Adaptable to all formation types
DISADVANTAGES• Restricted re-entry access
16Multilateral Systems
Baker Oil ToolsTAML Level 6
Pressure integrity at the junction achieved with casing
(Cement IS NOT Acceptable)
ADVANTAGES• Positive re-entry
• Mechanical and hydraulic support• Adaptable to all formation types• Numerous completion options
DISADVANTAGES• Limited pressure differential ratings
• Larger well bore requirements
17Multilateral Systems
Baker Oil ToolsLevel 6 Junctions
Stackable SplitterDeep Set Splitter
FORMation Junction
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TAML Complexity Versus Flexibility
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Complexity of InstallationComplexity of Installation
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