SLIM HOLE DRILLING-CONCLUSION WELL CORED TO 9,800 FT IN PARAGUAY
Kenneth B. Gunn Texaco Inc. Latin America/West Africa Division Coral Gables, Fla. The mining industry's slim hole drilling rigs have proven applicable to primary oil exploration. These "lean, mean drilling machines" are smaller than conventional drilling rigs and can be transported with relative ease to remote locations. (Editor's note: The first of these two articles on slim hole drilling described mining industry core drilling equipment and techniques and appeared in OGJ, May 6, p.