Sept 8 (Reuters) - Stampede Drilling Inc SDI.V :
* STAMPEDE DRILLING INC. ANNOUNCES AMENDMENTS TO CONVERTIBLE DEBENTURES
* STAMPEDE DRILLING INC - TERM OF DEBENTURES WILL BE EXTENDED BY THREE YEARS, SUCH THAT DEBENTURES WILL MATURE IN OCT. 2023
* STAMPEDE DRILLING INC - CONVERSION PRICE OF DEBENTURES WILL BE LOWERED TO $0.21 PER COMMON SHARE OF STAMPEDE