Hail is another potential sour gas project in Abu Dhabi, currently
under review. It is expected to produce 400-600 million scf/d of sales gas. The H2S content of this offshore field is 15%, which is lower than the onshore fields, but the offshore location, albeit in shallow water, may increase production costs. The Shuwaihat field, involving Wintershall, is also creating strong interest and reserves are estimated between 28 to 85 bcm.
The North Field is the largest gas field in the world at 1500 tcf and straddles Iran and Qatar. South Pars is on the Iranian side and in spite of delays caused by international sanctions, Iran has been steadily progressing through the 29 project phases, all of which involve gas and condensate recovery.
On the Qatari side of the North Field, gas is brought ashore to the massive complex at Ras Laffan. Gas production will rise to 2.2 million t/a by 2018 as more gas is processed. The new Barzan gas project is designed to provide gas for domestic use with Train 1 commissioned and Train 2 due to start up this year. Total sales gas output at capacity will be 1.4bcf/d.
In neighbouring KSA, Karan is the first non-associated sour gas development. The gas is produced offshore and pumped for processing onshore at the existing Kursaniyah gas plant.
Additionally the Wasit gas plant has been built to process gas from the offshore Arabiyah and Hasbah sour non-associated gas fields. Total gas processing capacity is 2.6 billion scf/d to produce 1.75 billion scf/d of sales gas. H2S content averages 4-8%, and the sulphur recovery section includes four SRUs with a total capacity of 2,400 t/d (800,000 t/a). Start-up began in 2015 with full production expected this year. Fadhili is another sour gas processing plant, designed to process additional gas from the Kursaniyah and Hasbah fields and the $6.5 billion gas plant will have a capacity of 2.5 billion bcm.
Oman has two major sour gas processing projects. One is at Yibal Khuff Sudair and is a deep oil and associated sour gas deposit beneath an existing field, with an H2S content of 3%. An 85,000 t/a sulphur recovery plant is due for completion, and commissioning of the gas project is expected in 2019. The other project is the Rabab Harweel Integrated Project.
KOC still has plans to develop very challenging contaminated gas reserves from Jurassic formation in Northern Kuwait.
Internationally other sour gas exploration activities are ongoing in Central Asia, particularly in Uzbekistan with the impending construction of the Kandym Gas Processing Plant. The long awaited Kashagan project in Kazakhstan is expected to restart production in 2017 as the gas leaks from the sour gas pipelines are
finally eradicated. Also sour gas activities in China are ongoing in the Yuanba and Chuandongbei Gas Fields and the Gorgon and Janz-I0 Gas Fields off the coast in Western Australia with their reserves of 40 tcf are expected to produce 15.6 tons/year of LNG.
The technologies involved in sour field management and production are always progressing and the latest developments across the whole management spectrum including observations on capturing CO2 from sour gas processing facilities for use in EOR will be included in the SOGAT Conference Programme. Also within
this programme, the well known coverage of technical developments with papers from Operators will be encouraged as ever together with a specialist Panel Session on Emergency Response Planning with a particular focus on RPE to enhance personnel safety. Also, the SOGAT 2016 Programme will include a Poster Session.
As usual practical Workshops on topical issues in these areas will be presented in the first two days of SOGAT 2016 and the International Advisory Committee are planning workshops on: Sulphur Recovery; Sour Oil & Gas Process Optimisation; Dehydration of Natural Gas; Managing BTX in Lean Acid Gas; and Implications along the Sulphur Supply Chain in Future Market Conditions and Potential Solutions.
The SOGAT Exhibition will see the world's leading vendors and suppliers returning again and so SOGAT 2016 will continue its well known trend and reputation, as the international event that provides a one stop review of all the latest developments in Global Sour Hydrocarbon and Sulphur Management.