Barhale, as part of Anglian Water’s @one Alliance, has helped rehabilitate more than 10.4 kilometres of

Barhale, as part of Anglian Water’s @one Alliance, has helped rehabilitate more than 10.4 kilometres of sewer pipe across East Anglia. The £4.5m project involved 22-weeks of live work to upgrade the sewer and the scheme has been delivered through the @one Alliance, the collaboration of consultants and contractors working together to deliver more than half of Anglian Water’s capital investment programme. One of the main challenges facing Barhale was the replacement of 360m of a damaged brick sewer, serving Whitlingham Water Recycling Centre. The 11m deep 1676mm diameter brick sewer had been attacked by Hydrogen Sulphide, causing bricks to become dislodged. A GRP pipe jack solution was chosen, eliminating any future risk of Hydrogen Sulphide attack and extending the sewer’s lifespan for another 150 years. Before work could begin, CCTV technology was used to provide a full 360º sonar and laser scan profile of the sewer. The survey found the sewer was up to 45% full of debris, with over 135m3 requiring removal. A steel shield was installed ahead of the GRP pipes providing a safe area for the workforce to remove the debris whilst simultaneously pipe jacking without being put at...

OGF Article Designing Efficient Facilities in Challenging Locations

As exploration and production (E&P) projects move into more unique territories, operating companies must evaluate their projects’ infrastructures and devise strategies to sufficiently prepare for a growing energy demand. These strategies may take the form of significant upgrades to existing facilities or the construction of new facilities altogether. At the 2015 SPE Annual Technical Conference and Exhibition, representatives from small private and state-owned operating companies discussed the challenges they faced with facilities design and construction, both onshore and offshore. This feature examines some of the strategies that were taken to handle those challenges. Last year, Pacific E&P finished work on a pilot for the first in-situ combustion project in Colombia, at the Quifa oil field located in the eastern part of the Llanos basin. Pacific E&P had five main objectives with the pilot. First, it wanted to evaluate the applicability of in-situ combustion in the heavy oil field. Second, it wanted to assess the impact of the reservoir heterogeneities on the process performance. Third, it sought experience and accuracy on the simulation and analytical models develo...