shares in arrow exploration corp rose sharply wednesday in early trading after it reported positive test results for the rio cravo este2 oil well in colombia the oilandgas company which has a 50 interest in the project reported average test production of 1199 barrels a day for the carbonera c7 and c7 stringer zones 115 bd for gacheta c c1 and c2 and 362 bd for the deepest gacheta d zone arrow said it will now bring rce2 on slowly and increase production while moving the rig to the location of the next well rcs1 where drilling is expected to start before the end of may shares at 0745 gmt were up 26 at 170 pence