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Overview
Basic Rig Components and Functions
The Drilling Process
– Bits
– Fluid (Mud) Systems
– Directional Tools
– Measurement While Drilling (MWD)
– Casings
– Cements
Today’s Challenges
– Temperature
– Pressure
– Extended Reach
– Multi-Laterals
– Pad Wells
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The Rig
http://www.cabotog.com/comm_education.html
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The Rig
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The Rig
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The Drilling Process
Bits
– Roller Cone and Fixed Cutter
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The Drilling Process
Fluid Systems/Mud
– Cool the bit, carry cuttings, hold formation back
– Water Based Mud
– Oil Based Mud
– Synthetic Mud
Directional Tools
– Allow for non-vertical drilling
– Bent Housing Motors
– Rotary Steerable
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Directional Drilling
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Directional Drilling
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The Drilling Process
MWD
– Allow for real-time analysis of the formation
– Send instant data back to surface for Geologists and
Petrophysicists
– In or out of formation
Casing
– Layers of protection, hold formation back
– Provide base for rig and well
Cement
– Protects freshwater zones
– Provide isolation between formation and casing
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Today’s Challenges for Horizontal Drilling
Temperature and Pressure
– Affects everything(bits, mud, tools, pipe, cement, etc.)
Extended Reach
– Overburden drilling
– Maximize wellbore contact with formation
Multi-Laterals
– Same as extended reach
– TAML levels 1-6
Pad Well Drilling
– Collision Avoidance
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Multi-Laterals
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Pad Well Drilling
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Pad Well Drilling with Multi-Laterals
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