SNS Rejuvenation SIG

The Southern North Sea is at a critical juncture. For over 40 years, the basin has developed and delivered strong gas production through a diverse network of offshore platforms, pipelines and onshore terminals. The basin has been well exploited and the opportunity to identify and develop large “landmark” discoveries is increasingly limited.
Nonetheless, significant potential remains within the basin. However, these remaining opportunities are predominantly characterised as marginal pools and tight gas. They are increasingly expensive and complex to access. Both technical and commercial risks are high and opportunities can be quickly disregarded as uneconomic.
The challenge for the Southern North Sea is now to harness this remaining potential by searching for innovative business and technical solutions. This challenge is a set against a back drop of depressed commodity prices, ageing infrastructure and increasing unit transportation costs, as production from existing developments continues to decline.
Please click HERE to view the Terms of Reference.

SNS Tight Gas Hackathon Report

OGA SNS Tight Gas Strategy Document


Tight Gas – how are we progressing?

The East of England Energy Group (EEEGR) SNS Rejuvenation Special Interest Group, in association with the Oil and Gas Authority, held a Tight Gas Hackathon on 31st May 2017 at Dunston Hall, Norwich. The aim of this session was to flush out ideas from industry experts as to how the Tight Gas reserves in the SNS could be accessed, in terms of the reservoirs, stimulation, production, technology and logistics. The output of this session was the SNS Tight Gas Hackathon Report which can be downloaded below.

Following the hackathon event, the Tight Gas workgroup, which includes key stakeholders and operators from the SNS, have developed visions for five topics which encapsulate the issues and ideas generated on the day.

The workgroup will pursue JIP’s for the following three topics.

  • TQ Frac Factor:  Predict the production performance of fracced wells from the well’s reservoir characteristics.  Build on reservoir data and fracced well performance. Create correlations specific for the North Sea basin reservoirs.
  • Reservoir Properties Research:  Increase our ability to accurately characterise their reservoir properties (porosity, permeability, gas saturation, etc.) so that we can predict their flow potential. Understand the stress field (orientation and magnitude of the stresses) and geomechanical properties, which are needed as input data for new 3D fraccing models that will be used to optimize drilling and completion strategies. 
  • Fraccing Models: Develop an industry wide, effective, fraccing model that can accurately predict the post-frac well performance in Rotleigend and Carboniferous reservoirs.  The model can be used in the design phase and real-time updated during the fraccing operations phase.

The group is currently awaiting a ‘call for ideas’ from the Oil and Gas Technology Centre (OGTC) where we hope that accessing Tight Gas will feature as a topic, such as the 2 topics below:

  • Frac Existing Wells:  Develop cost effective equipment, technology or methodologies to re-enter and preferentially re-stimulate selected zones in previously (multi-) fracced wells, or in wells that have never been fracced, to improve production performance.
  • Alternative Techniques to Stimulate the Reservoir: Develop cost effective, robust and reliable alternatives to aid industry in unlocking the significant volumes of gas remaining in SNS tight gas reservoirs.