Download or read book Deep Hole Drilling Feasibility Study written by Fenix & Scisson and published by . This book was released on 1969 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is feasible to drill a hole to a depth of 50,000 feet by utilizing conventional rotary drilling equipment and techniques. Existing equipment is capable of drilling the hole but modifications of some equipment items are warranted for completion of the lower portion of the hole. The whole could be started with presently available equipment as soon as funds are available, a location established, and a contractor selected. While the upper portion of the hole (20,000 - 30,000 ft.) is being drilled, equipment modifications could be made and supplemental equipment developed. This would allow time to make the equipment available when needed for the lower portion of the hole. Two locations are considered as established by the criteria, both in the Coast Ranges Province of California in the vicinity of the San Andreas Fault. One location would be in an area where granitic rock outcrops at the surface while the other would be in an area where the granitic is overlain by 10,000 feet of sediments. The estimated time to drill the hole under ideal conditions at either location is 4-3/4 years at an estimated cost of $20,000,000. [$400/ft].