Piper Alpha was an originally designed as an oil producing rig in the North Sea approximately 120 miles North East of Aberdeen, Scotland. It was a fixed leg platform in water depth of 475 Feet of water. The installation sat close to 275 Feet above water to the top of the derrick.

2) It started production in December 1976 for OPCAL joint venture. OPCAL being Occidental Petroleum Caledonia, Texaco Britain, Thomson PLC, and Texas Petroleum LTD. Occidental was the majority stakeholder at 36.5%

3) Occidental being majority stakeholder took control of technical and operational duties with running and operating the rig. When oil production started in 1976 it started with a flow of 250,000 BBL/day and eventually increasing this amount to 300,000 BBL/day.

4) 300,000 BBL/day would account for approximately 10% of the UK’s oil production at the time, so needless to say it was one of the most important rigs in the area. Any gas that was flowing would be flared or consumed by gas turbine generators

5) Around 1980 there was a decision to convert the rig to also process gas along with the oil. This was a major conversion, and if it would have been scoped in from the beginning, most likely construction of the rig would have been more accommodating for gas.