Teesside Gas Processing Plant

Our Teesside Gas Processing Plant (TGPP) at Seal Sands is at the heart of the Teesside integrated energy network, connecting hydrocarbon-based transition fuels with new energy provision, powering the UK today and into a sustainable future.

Overview
Process
Benefits
Available Capacity
Technical Specifications
Operational Performance

Highly flexible in its operation, it has one of the highest liquid extraction rate capabilities in Europe. The plant uses two trains to process gas from the Central and Southern North Seas.

Capable of meeting up to 10% of the UK’s gas demand, this highly efficient and flexible two-train operation boasts a combined capacity of 675 million cubic feet of gas per day. Run by a proficient operations team with an exceptional safety record, our award-winning facility boasts an availability track record of >99%.

Contact Cameron Slane, Asset Director to discuss your requirements

Process

Gas from the Central North Sea is brought onshore to TGPP via the 400 km-long CATS pipeline. Gas from the Southern North Sea arrives via the 110km Breagh pipeline. The Breagh unmanned offshore facilities are operated remotely from the TGPP control room.

Benefits

Independence

Our primary business is processing third-party gas, providing high-quality, flexible service to all users.

Advanced technology

Our advanced processing can be tuned to suit the economic environment, allowing for liquid extraction rates of 11-14% (measured on an energy basis) as required.

Simplicity and flexibility

We optimise our processing services for the dynamic needs of our customers. We provide gas processing services and a route to market for fractionated natural gas liquids via integrated transportation and sales arrangements, simplifying offtake arrangements for our customers.

Performance record

Multiple industry awards reflect a commitment to achieving best-in-class standards for performance and plant availability, while maintaining excellence in quality, health, safety and environmental management.

Strategic location

The North Tees region boasts a dynamic and active Energy Transition environment, allowing us to connect upstream users to multiple customers building new sustainable energy provision options within one the UK’s industrial heartlands.

Available capacity

TGPP currently has the following capacity available:

	2024	2025	2026	2027	2028
Central North Sea Capacity
Central North Sea Capacity

> 25% 5% - 25% < 5%

Technical specifications

Entry Specifications – Central North Sea

Gas delivered to TGPP from the CATS Pipeline must meet the following criteria:

Water Dewpoint	Max	7,500 KPa gauge @min 15 deg
Water Content	Max	15kg per million Cubic Metres
Hydrocarbon Dewpoint	Max	9,340 KPa gauge @ minus 2 deg C
Total Sulphur	Max	14.4 ppm vol (expressed as H2S)
Hydrogen Sulphide	Max	3.0 ppm (by volume)
Carbonyl Sulphide	Max	1.0 ppm (by volume)
Methyl+ethyl Mercaptan Sulphur	Max	0.5 ppm (by volume)
Total Mercaptan Sulphur	Max	3.1 ppm (by volume)
Carbon Dioxide	Max	2.8% mol
Oxygen	Max	9.0 ppm vol
Nitrogen	Max	4.5% mol
Temperature	Max	51 deg C
Mercury	Max	0.01 ug / m3
Non-hydrocarbon content	Max	5.5 mol%

Natural Gas must be technically free from objectionable odours, materials, dust, sand, or other solid or liquid matter (other than the Associated Liquids specified below), drilling muds, acidising fluids, fracturing fluids, proppants, foaming agents, excessive dissolved solids, waxes, gums and gum forming constituents which might injure or interfere with the proper operation of the lines, meters, regulators or other appliances through which it flows.

No chemicals or other substances may be introduced into the natural gas, which might be carried over into the pipeline without the prior agreement of TGPP operators.

Natural Gas must be capable of being processed to meet the prevailing National Gas Transmission redelivery specification.

Entry specifications - Southern North Sea

Methane Content	Min	80 mol%
Gas Calorific Value	Min	37.5 MJ/m3
	Max	42.3 MJ/m3
Wobbe Index	Min	47.5 MJ/m3
	Max	51.2 MJ/m3
Total Sulphur	Max	14.4 ppm vol (expressed as H2S)
Hydrogen Sulphide	Max	3 ppm (by volume)
Carbonyl Sulphide	Max	1 ppm (by volume)
Methyl+Ethyl Mercaptan Sulphur	Max	0.5 ppm (by volume)
Total Mercaptan Sulphar	Max	3.1 ppm (by volume)
Carbon Dioxide	Max	2.8% mol
Oxygen	Max	9 ppm vol
Nitrogen	Max	4.5% mol
Temperature	Max	15 deg C
Mercury	Max	5ng/m3
Non-Hydrocarbon Content	Max	5.5 mol%
Propane + Content (C3+)	Max	2 mol%
Heptane + Content (C7+)	Max	0.5 mol%
Pressure*	Max	85 bar gauge

In order to meet this specification, Pipeline Fluids delivered by the User to the Processor for processing under this Agreement shall be commercially free from objectionable odours, radioactivity, materials, dust, sand, or other solid or liquid matter (other than the Associated Liquids specified below), drilling muds, acid ising fluids, fracturing fluids, proppants, foaming agents, excessive dissolved solids, waxes, gums and gum forming constituents which might cause injury or interference with the proper operation of the TGPP and/or the TGPP Liquid Pipelines or which could be expected to remain in Natural Gas and interfere with the proper operation of the lines, meters, regulators or other appliances through which it flows.