OCR Text |
Show SPECIAL STEM FOR ARROWHEAD Considerable . trouble is encountered encoun-tered in the local field by drillers when on reaching the Kaibab lime they find the formation full of crevices and cracks which have a tendency to cause a crooked hole. The same condition was fotmd by the Arrowhead Petroleum Corporation Cor-poration on the Punch Bowl and has caused a brief shutdown while new equipment to meet the emergency emer-gency was ordered. This included a new spiral stem which has been installed and which holds the bit on a, straight downward course even through a broken formation. The Arrowhead is now at a depth of approximately 900 feet, j |