PC25C01 Natural Gas Engineering – Semester IV – Petrochem – R-2025

Subject Code & Name: PC25C01 – Natural Gas Engineering

Regulation: R-2025

Semester: IV (Fourth Semester)

Branch: B.Tech. Petrochemical Technology (Petrochem)

Credits / L-T-P: 3 Credits | L-T-P: 3-0-0

Course Objectives

• To provide students with a comprehensive understanding of natural gas engineering encompassing upstream production, gas processing, and transportation systems, thereby equipping students with the technical competence required for specialization in gas processing technology.

Full Unit-wise Syllabus

Unit I – Fundamentals of natural gas production and reservoir Behavior

Introduction to natural gas industry: Upstream and downstream overview, Gas production systems and flow paths, Reservoir and well completion, Properties of natural gas: phase behavior, formation volume factor

Activities: Case studies on gas production systems, flow paths, reservoir behavior, and well completion supported by simulation exercises

Unit II – Well Performance and Flow Analysis

Inflow Performance Relationship (IPR), Skin factor and productivity index, Wellbore performance: TPR curves, Single-phase and multiphase flow, Choke performance: CPR curves, Sonic and subsonic flow, Nodal analysis and optimization

Activities: Problem-solving sessions on wellbore and choke performance, supported by simulation exercises

Unit III – Processing of Natural Gas

Surface operations overview, Separator principles, Vertical and horizontal separator design, Two-phase and three-phase separation

Activities: Problem-solving exercises on vertical and horizontal separator design for two-phase and three-phase separation systems

Unit IV – Gas Conditioning and Measurement Systems

Dehydration and sweetening, Design of dehydration units, Compressor design and energy calculations, Pipeline transport and measurement, Basics of pipeline design, Flow issues and solutions in pipelines,

Activities: Problem-solving sessions on energy calculations, pipeline transport, and measurement systems

Unit V – Unconventional Gas Resources

Shale gas, coal bed methane, gas hydrates, oil shale Pyrolysis of carbonaceous materials, Environmental and safety aspects

Activities: Case studies drawn from global shale gas development projects with emphasis on safety and sustainability in petrochemical industries.

Course Outcomes (COs)

• CO1: Understand natural gas reservoir characteristics, fluid properties, and production system behavior.
• CO2: Apply IPR, TPR, and CPR relationships to perform nodal analysis and predict well performance.
• CO3: Analyze surface separation, gas conditioning, and processing systems for efficient natural gas production.
• CO4: Evaluate transportation systems, and pipeline operating parameters for effective gas distribution.
• CO5: Design integrated natural gas production and transportation systems by incorporating pipeline flow behavior and unconventional gas recovery technologies.

Assessment Pattern (Quick Note)

• Weightage: Continuous Assessment 40% | End Semester Examinations 60%
• Internal methodology: Case studies (10%), problem solving (10%), seminar / assignment (10%), Internal Examinations (70%)

Source: Official Anna University – B.Tech. Petrochemical Technology R-2025 Syllabus
Last Updated: October 2026