LONDON (Dow Jones)--Oil and gas explorer Pantheon Resources PLC (PANR.LN) Friday said drilling of the Kara Farms well in Tyler County, Texas, has been delayed because operator Vision Resources LLC couldn't get a suitable rig. The company, which has projects in the U.S. and U.K., said it estimates a rig will become available between September and November. -By Jason Douglas, Dow Jones Newswires; 44-20-7842-9272; [email protected] (END) Dow Jones Newswires July 30, 2010 03:26 ET (07:26 GMT)