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Impact of Rock Compaction on NSO Gas Field Performance
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, IPTC 2007: International Petroleum Technology Conference, Dec 2007, cp-147-00041
Abstract
The North Sumatra Offshore (NSO) field is a large gas<br>field that supplies gas to the P. T. Arun Liquified Natural<br>Gas (LNG) plant in Aceh, Indonesia. The field came onstream<br>in 1999 and produces about 450 MMscf/d<br>currently. The field has produced about 34% of the<br>Original Gas In Place (OGIP) as of 1/1/2007, and the<br>ultimate recovery is expected to be around 75%. The<br>producing carbonates have an average porosity of 23%<br>with zones of higher porosity at the top of the reservoir.<br>Geomechanical testing of Malacca limestone cores<br>indicated that the rock has high compressibility and<br>suffers elastic and significant plastic deformation when<br>mechanical stresses are increased.