Abstract

TS2, the largest and most extensive paysand of Lakwa Field, is highly permeable except its shaly silty top portion which is less permeable and fining upward. The lower highly permeable portion and the less permeable top silty portion have distinct log and production characteristics even though they are part of the same reservoir. While the highly permeable lower portion produces with high influx and generally high water cut, the less permeable top silty portion gives low influx and generally negligible water cut. The overlying subsidiary of TS2, designated as TS2S, is also less permeable and has production characteristics similar to TS2 top silty portion.