Union Jack Oil looks forward to testing as West Newton B-1Z well advances Results from the well to date are described as "highly encouraging" and the next phase of work begins in May. Union Jack Oil PLC (LON:UJO) told investors the West Newton B-1Z appraisal well has successfully completed cased hole logging and vertical seismic profiling operations. The next phase of work will see a service rig used to perforate and stimulate the Kirkham Abbey formation ahead of flow testing. This work expected to get underway in May with operations slated to take around 4 weeks. Following the completion of the WNB-1Z well, the company intends to restart testing at the WNA-2 well.