DNO tests Tawke Jurassic oil, Cretaceous lateral

DNO International ASA, Oslo, has a Jurassic oil discovery in Tawke field in the Kurdistan Region of Iraq, where the field’s first horizontal well, Tawke-20, averaged 8,000 b/d of oil from each of the first four of 10 fractured corridors in Cretaceous.

Tawke-17, deepest in the field, tested at 1,500 b/d of 26-28° gravity oil from the Upper Jurassic Sargelu formation more than 200 m below the field’s main Cretaceous reservoir. The discovery likely bumps recoverable reserves on the Tawke license to the 1 billion bbl mark, the company said (OGJ, Feb. 6, 2012, p. 48).

DNO International continued to test both wells, said Bijan Mossavar-Rahmani, executive chairman, and plans to drill the field’s second horizontal well shortly.

“If this second well, Tawke-23, demonstrates the significant deliverability uptick we are now seeing in Tawke-20, we will go back to the drawing board and consider further enhancements to our current target of 200,000 b/d of production capacity by 2015,” Mossavar-Rahmani said.

Last month the company said it had met its previous goal of delivering 100,000 b/d from Tawke field following 72 hr of well and facility tests.

Tawke-17 also encountered several Triassic zones that proved either tight or water-bearing. Two more identified reservoir intervals in the Upper Jurassic remain to be perforated and tested.

In early 2012, DNO International said the vertical Tawke-16 well flowed at a combined 25,000 b/d of oil from multiple Cretaceous zones tested separately, making it the field’s best well to that point (OGJ Online, Mar. 21, 2012).

DNO International holds a 55% interest in and operates the Tawke license. Genel Energy PLC has 25%, and the Kurdistan Regional Government has 20%.

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