STOCKHOLM, Sweden – Disappointing test flow results have caused PA Resources (PAR) to suspend its latest production well on the Didon North field offshore Tunisia.
The total depth of the horizontal part of the well was reached at the end of August. However, despite reports of good oil saturation in the reservoir, recent tests recovered only small amounts of hydrocarbons.
Analysis suggests the well encountered minor faults not visible on the seismic, preventing oil from flowing. Several attempts have been made to flow the well using different techniques, but PAR believes that further measures are not justified at this stage.
The drilling rig will be released and a comprehensive analysis conducted to evaluate all options for future exploitation of the oil in the reservoir, which was discovered following exploration drilling in 2008.
In a statement, PAR said: “We are very surprised by this unexpected outcome given our experience from similar reservoirs at the Didon field. We will need time to assess what has gone wrong in testing and possibly the completion of the well. At the same time, we will look into other possibilities to increase our production.”
The main Didon field produces primarily from two of its wells, although PAR has taken action to reactivate others, which led to periodic production from a third well in July and September. A program of measurements and other actions is in progress designed to partly compensate for the field's natural decline.
Also offshore Tunisia, PAR has continued discussions concerning unitization and development of the Zarat field. The operator of the adjacent 7 November license has lifted the force majeure restriction which came into effect in June.
Joint studies are under way between the licensees to create a dynamic reservoir model enabling next phase studies of development alternatives.
Also under way on the Zarat license are efforts to update the seismic 3D model of the Elyssa field, using analyzed 3D seismic data. In parallel, processing is nearing completion of the 3D seismic data acquired in 2004 over the Zarat license.