Connecting coriolis meters to rod pump controllers in a major Oman oilfield puts accurate on-line well test data on the production technologist's desk. Conventional test separator facilities have been rendered obsolete. Numerous benefits of this recent change are beginning to be realized.


The Rima oilfield (fig. 1) was discovered in 1979 in South Oman, and was brought on stream at 8000 m3/d (50,000 b/d) with 22 beam-pumped wells in 1982. Infill drilling and production from horizontal wells and electric submersible pumps (ESPS) has since raised oil production to 14,500m3/d (90,000 b/d) from 70 wells. The watercut has increased steadily at around 7% per annum, to a current level of 70 % (ref. 1).

Each well is produced through a dedicated 6" carbon steel flowline to a central gathering station (RGS) with a test manifold and separator facilities (see fig. 2). The flowlines are gathered in parallel surface-laid "avenues", which broaden as RGS is approached.

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