Drilling Engineering

9.

Well Planning and Design

9.1.

Well Objectives and Data Gathering

9.1.1.

Geological and Geophysical Data

9.1.1.1.

Seismic Interpretation

9.1.1.2.

Well Log Correlation

9.1.1.3.

Regional Geology

9.1.2.

Offset Well Data

9.1.2.1.

Drilling Performance

9.1.2.2.

Formation Pressures

9.1.2.3.

Wellbore Stability Issues

9.1.3.

Environmental and Regulatory Data

9.1.3.1.

Environmental Impact Assessment

9.1.3.2.

Permit Requirements

9.1.3.3.

Regulatory Compliance

9.2.

Well Trajectory Design

9.2.1.

9.2.1.1.

True Vertical Wells

9.2.1.2.

Deviation Control

9.2.2.

Directional Wells

9.2.2.1.

Build-and-Hold Profile

9.2.2.2.

9.2.2.3.

Continuous Build Profile

9.2.3.

Horizontal Wells

9.2.3.1.

Horizontal Displacement

9.2.3.2.

Landing Point Selection

9.2.3.3.

Reservoir Contact Optimization

9.2.4.

Multilateral Wells

9.2.4.1.

9.2.4.1.1.

Level 1 Junctions

9.2.4.1.2.

Level 2 Junctions

9.2.4.1.3.

Level 3 Junctions

9.2.4.1.4.

Level 4 Junctions

9.2.4.2.

Completion Strategies

9.3.

Surveying and Positional Uncertainty

9.3.1.

Survey Tools and Methods

9.3.1.1.

Magnetic Survey Tools

9.3.1.2.

Gyroscopic Survey Tools

9.3.1.3.

MWD Survey Systems

9.3.2.

9.3.2.1.

Systematic Errors

9.3.2.2.

9.3.2.3.

Error Propagation

9.3.3.

Anti-Collision Planning

9.3.3.1.

Separation Factor

9.3.3.2.

Closest Approach

9.3.3.3.

Uncertainty Ellipses

9.4.

9.4.1.

Casing Functions

9.4.1.1.

Zonal Isolation

9.4.1.2.

Wellbore Support

9.4.1.3.

Pressure Containment

9.4.1.4.

Corrosion Protection

9.4.2.

Types of Casing Strings

9.4.2.1.

Conductor Casing

9.4.2.1.1.

Structural Support

9.4.2.1.2.

Shallow Water Protection

9.4.2.2.

9.4.2.2.1.

Fresh Water Protection

9.4.2.2.2.

Shallow Gas Protection

9.4.2.3.

Intermediate Casing

9.4.2.3.1.

Pressure Isolation

9.4.2.3.2.

Problem Zone Isolation

9.4.2.4.

Production Casing

9.4.2.4.1.

Reservoir Isolation

9.4.2.4.2.

Production Conduit

9.4.2.5.

9.4.2.5.1.

Drilling Liners

9.4.2.5.2.

Production Liners

9.4.3.

Casing Seat Selection

9.4.3.1.

Formation Strength

9.4.3.2.

Pressure Gradients

9.4.3.3.

Drilling Hazards

9.4.4.

Load Case Analysis

9.4.4.1.

Burst Load Analysis

9.4.4.1.1.

Internal Pressure

9.4.4.1.2.

9.4.4.2.

Collapse Load Analysis

9.4.4.2.1.

External Pressure

9.4.4.2.2.

Collapse Resistance

9.4.4.3.

Tension Load Analysis

9.4.4.3.1.

9.4.4.3.2.

Buoyancy Effects

9.4.4.4.

Triaxial Analysis

9.4.4.4.1.

Combined Loading

9.4.4.4.2.

Von Mises Stress

9.4.5.

Casing Material Selection

9.4.5.1.

9.4.5.2.

Corrosion Resistance

9.4.5.3.

Temperature Ratings

9.4.6.

Casing Connections

9.4.6.1.

Threaded Connections

9.4.6.2.

Premium Connections

9.4.6.3.

Connection Testing

9.5.

Drill String and BHA Design

9.5.1.

Design Criteria

9.5.1.1.

Load Requirements

9.5.1.2.

Hydraulic Requirements

9.5.1.3.

Directional Requirements

9.5.2.

BHA Configurations

9.5.2.1.

Pendulum Assembly

9.5.2.2.

Packed Assembly

9.5.2.3.

Steering Assembly

9.6.

Drilling Program Development

9.6.1.

Authorization for Expenditure

9.6.1.1.

Cost Estimation

9.6.1.2.

Economic Evaluation

9.6.2.

Time and Cost Estimation

9.6.2.1.

Drilling Time Prediction

9.6.2.2.

Cost Per Foot Analysis

9.6.3.

Risk Assessment

9.6.3.1.

Technical Risks

9.6.3.2.

Operational Risks

9.6.3.3.

Mitigation Strategies

9.6.4.

Contingency Planning

9.6.4.1.

Alternative Strategies

9.6.4.2.

Emergency Procedures

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8. Drilling Hydraulics

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10. Drilling Operations and Procedures