The document provides an overview of the Sui Gas Field in Pakistan. Some key points: - The field was discovered in 1952 and started production in 1955. Current production is 360 MMCFD, down from a peak of 940 MMCFD in 1999 due to depletion. - The field has 99 producing wells that extract gas from three formations. A gas compressor station consisting of 7 turbo and 3 motor compressor units, and 4 turbo-generator units processes and transports the gas. - A purification plant sweetens and dehydrates the raw gas through 8 banks and 6 dehydration units before transmitting it through 150km of pipelines to distribution networks. - In response to declining production, the company has

1. Pakistan Petroleum Limited
SUI GAS FIELD – OVERVIEW

2. PPL Exploration & Production
Areas
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3. Sui Gas Field - In Perspective
 Discovered in 1952
 Production started in 1955
 Current Production is 360 MMCFD
 Max production of the field was 940 MMCFD in 1999
 Challenge: Declining Production due to depletion
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4. Sui Production
 All Producing wells
comprise of wellhead,
surface fittings, surface
and sub-surface safety
system, metering
system, corrosion
inhibitor injection
system and cathodic
protection.
 Pipelines: 150 KM
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5. WELLS
All Producing wells comprises of wellhead, surface
fittings, surface and sub-surface safety system, metering
system and corrosion inhibitor injection system.
Total Wells Drilled: 110
Producing Wells: 99
Observation Wells: 02
Abandoned Wells: 9

6. Production & Sales
Figures of Raw Gas Production, Sales Gas and Gas used for fuel are as
under:
 Raw Gas (SML+SUL+HRL+PAB): 360 MMCFD (Avg.Nov.20)
 SSGC Sales Gas: 110 MMCFD
 SNGPL Sales Gas: 189 MMCFD
 SNGPL (SUL): 8.2 MMCFD
 Sui PP Boiler Fuel: 9.7 MMCFD
 Gas Turbine Fuel: 0.6 MMCFD
 SFGCS Fuel (SUL): 21 MMCFD
 Sui Town: 4.18 MMCFD
 Domestic & Ind. Use: 1.08 MMCFD
**Figures mentioned are subject to some variation due to operational

7. Sui Field Gas Compressor Station
7
 Draws gas from following
formations:
SML – Sui Main
Limestone
SUL - Sui Upper
Limestone
HRL – Habib Rahi
Limestone
 7 Turbo Compressor
Units
 3 Motor Compressor units
 4 Turbo-generator Units
 3 decades of successful

8. Sui Field Gas Compressor Station
3.2
////
/
////
/
SUL
Supply to
Sui DHP.
SUL Slug Catcher &
Scrubbers
LP Comp. HP Comp.
Knock Out
Drum
Knock Out
Drum
Knock Out
Drum
Cooler Cooler
SML Slug Catcher &
Scrubbers (Southern Header)
SML Slug Catcher &
Scrubbers (Northern Header)
////
/
///
//
SML
Supply to
Sui PP.
Knock Out
Drum
LP Comp.
Cooler
Knock Out
Drum
HP Comp.
Cooler
Knock Out
Drum
Sui Main Limestone (SML)/PAB : 7 x 7.5MW Turbine driven Compressors
Sui Upper Limestone (SUL) : 3 x 2.2MW Electric Motor Driven Compressors
Habib Rahi Limestone (HRL) : 2 x 1.94MW Gas Engine Driven
Compressors
(Currently, HRL directly going into SML Supply after passing from three phase separator and scrubber.

9. Sui Purification Plant
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 Function of Purification
Plant is to sweeten &
dehydrate raw gas of
Sui Gas field.
 Processing Facilities: 8
Banks, 6 Dehydration
units
 Main Utilities: 10 Boilers,
1 Demin & 1 RO unit, 2
Steam Turbines & 4 DGs
for Plant Power Gen., 4
Gas Turbines for Field
Power Gen., 3 IACs
 After Purification and
Dehydration, Sales Gas
is transmitted to SSGC/
SNGPL networks as per

10. 10
SPP - Single Line Process Flow
10
GAS PURIFICATION
BANKS
Count: 08 Nos.
Usage: Removal of
CO2 & H2S
RAW GAS FROM
SFGCS
(Northern & Southern
Header)
Sweet Gas &
Saturated with
water
DEHYDRATION
UNITS
Count: 06 Nos.
Usage: Removal of
Water contents
SALES GAS COOLER
Count: 04 Nos.
Usage: Maintaining
gas temperature
Sweet
&
Dry
Gas
SALES GAS METERING
STATION
• Gas Chromatograph
• Flo Boss
• Moisture Analyzer
SSGCL
SNGPL

11. Response to Declining
Production
 Expansion & Revamping of Compressor station.
 Conducted 3D seismic
 Ensured integrity of infrastructure
 Deployed underbalanced drilling
 Work overs for recompletion and remedial jobs
 Drilled wells in deeper formations (Pab reservoir)
 Drilled wells in HRL formation and installed compression
facility
 Acid Stimulation Campaign – 15 Wells in 2015-2016
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12. 12
Environmental Monitoring Plan
S.
No.
Monitoring Aspects Monitoring locations Parameters Frequency
1
Ambient air Quality
Monitoring
Different location at Sui
Field ( 09 Samples)
CO, NO, NO2, SO2,
PM
Annually
2
Exhaust and Emissions
Monitoring
Stacks , Engines &
Incinerator of SFGCS ,
Sui-Prod, SFU , SPP and
Field Area
CO, H2S, Nox, Sox,
PM
Quarterly
Lead , Mercury ,
cadmium , arsenic,
Copper , antimony
and Zinc
Annually
Vehicular Emissions Smoke & Noise Annually
3 Effluent Sui Nala
Effluent Flow,
Temperature, pH,
COD, BOD5,TSS,
TDS, Oil & Grease,
Chloride and
Phenolic
Compounds
Quarterly

13. 13
Environmental Monitoring Plan
S.
No.
Monitoring Aspects Monitoring locations Parameters Frequency
4. Noise
All Plant Locations at
SFGCS , SPP , DHP &
Vehicles
Noise Level (dBA)
During routine
monitoring
5. Solid Waste Plants and Hospital
• Hazardous waste
is disposed off
through Third
party
As & When
Required
6. H2S Monitoring
10 Different locations of
Sui Field
H2S monitoring on
24 Hours Basis
Quarterly
7. Drinking Water
All Field drinking water
locations
Biological ( E-
Coli)
Quarterly
Chemical ( Color ,
taste , odor , TH ,
TDS , pH , Al,
Antimony , Arsenic,
Annually

14. 14
Plantation Activities at Sui Field

15. 15
World Environmental Day at Sui Field

16. 16
World Earth Day at Sui Field

17. 17
Earth Hour at Sui Field

18. 18
QHSE Week at Sui Field

19. Thank You
You
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