Central Gas gathering Station of oil in short

1. PRESENTATION
ON
INDUSTRIAL VISIT
TO
OIL INDIA LIMITED CGGS AND OFF-TAKE POINT
MADHUBAN
DEPARTMENT OF PETROLUEM TECHNOLOGY
DIBRUGARH UNIVERSITY
Presented To:
Department Of Petroleum Technology
Presented By:
Students of 1st
Semester
Oil Well Drilling Technology
Batch (2024-2025)

2. ACKNOWLEDGEMENT:
We Extend Our Heartfelt Gratitude To Dr. Pradip Borgohain, Professor And Head Of The Department Of Petroleum Technology; Dr.
(Mrs.) Subrata Borgohain Gogoi, Professor And Dean Of The Faculty Of Earth, Sciences, And Energy; Dr. Ranjan Phukan, Assistant
Professor; Dr. Dhrubajyoti Neog, Assistant Professor; Dr. Borkha Mech, Assistant Professor; And Dr. Himanta Borgohain, Assistant
Professor, All From The Department Of Petroleum Technology, Dibrugarh University, For Organizing A One-day Industrial Visit To The
CGGS Facility Of Oil India Limited, Duliajan.
As Part Of Our Course Curriculum. We Also Wish To Express Our Sincere Appreciation To Mr. Pankaj Kumar Das, Installation Manager;
Mr. ------------, ---; And The Entire Team Of CGGS At Oil India Limited For Their Guidance And For Providing An Insightful Demonstration
Of The Various Technical Aspects And Equipment At The Well Site. Their Dedication And Hospitality Played A Pivotal Role In Making
This Industrial Visit A Remarkable Success. The Opportunity To Gain Hands-on Exposure To The Operations At CGGS Was An Invaluable
And Enlightening Experience For All Of Us.
Regards:
Batch (2024-2025), 1st
Semester
Oil Well Drilling Technology

3. CONTENT:
 INTRODUCTION
 OVERALL LAYOUT DIAGRAM OF CGGS
 GAS FLOW DIAGRAM
 GAS MEASUREMENTS SYSTEM
 SAFETY MEASURES
 CONCLUSION

4. INTRODUCTION:
 CGGS Is Constructed In Madhuban Near Well NHK#50, At A Distance Of
6km From Duliajan, Dibrugarh District.
 Constructed To Supply 6mmscmd Of Natural Gas Containing Atleast 7% C2
+ Components To BCPL From A Single Point.
 There Are 9 Incoming Lines From Different Fields.
 Gas Handling Capacity 12.50 MMSCMD.
 Natural Gas Liquid Handling Capacity 1250 KLPD.

5. OVERALL LAYOUT DIAGRAM OF CGGS:

6. GAS CYCLE

7. LP Indirect Bath Heater
• Used for variety of purpose
• Usually for heating Natural Gas
• Works as a dual fuel burner for Natural Gas and LPG
• Enter in a heated bath before entering LP Seperator

8. Heater Treater
• It is 3 phase separator vessel
• Helps to utilise heat and mechanical separation
• Facilates the separation of oil water emulsion
before transporting the dry oil thorugh pipeline
• Heater Treater consists of 3 Section
 Degasing
 Heating
 Differential Oil Control

9. GAS FLOW DIAGRAM:

10. A Finger-type Slug Catchers is specialized slug catching system that uses a series of long, horizontal pipes
(referred to as “fingers”) to handle and separate slugs in a pipeline.

11. Enclosed Ground Flare System

12. GAS MEASUREMENTS SYSTEM:
Gas Measurement System Ultrasonic Flowmeters And Gas Chromatographs Are Essential Tools In Gas
Measurement Systems
 An Ultrasonic Flowmeter Is Increasingly Used In Custody Transfer Applications.
 Gas Chromatograph Is Used For Flow & Energy Measurement And Quality Monitoring Of Gas

13. SAFETY MEASURES:
1. Firewater System in the Oil and Gas Industry:
 Firewater Pumps
 Jockey Pump
 Firewater Network
 Hydrants and Monitors
 Sprinklers
2. Fire Detection and Suppression System:
 Smoke Detectors
 Heat Detectors
 Gas Detectors
 Gas Based System
 Foam Based System
 Powder Based System

14. 3. The AFFF (Aqueous Film Foaming Foam):
 Foam Concentrate
 Foam Proportioner
 Foam Pourers
 Foam Generator
 Storage Tank
 Water Supply System
 Control Panel
 Detection And Activation
4. Emergency Shutdown (ESD) System:
 Process Isolation
 Equipment Shutdown
 Emergency Venting
 Fire And Gas Detection Integration

15. COMMON SAFETY POINTS:

16. CONCLUSION:
 CGGS Was Initially Envisioned To Supply 6 MMSCFD Of Rich Gas To BCPL .
 BCPL Consumes 1.35 MMSCFD And Returns 4.65 Mmscfd .
 Oil Also Supplies Gas To Bvfcl , Neepco , Apgcl , Nrl , Apl , Ioc-aod , Tea Grids , Small Industries And Png .
 The Facility Features Slug Catchers , Kod , Filter Seperator, Headers , Oil Water Separator , Effluent Treatment
Plant , Condensate Tank , Flare System , Ultrasonic Flowmeters And Gas Chromatographs .
 Safety Is The Topmost Priority In Any Industrial Plant . Safety Features Like Smoke Detectors, Esd, Fire Water
Pumps, Fire Detection And Suppression System, Etc Are Used .

17. THANK YOU