W. H. Jeffery Company, 1921, 534 pages.
The different well drilling methods include the cable, or percussion, pole tool, hydraulic rotary, core drill and hydraulic jetting. In some localities the combination cable and hydraulic rotary system is employed.
Geology plays an important part in well drilling and a study of the rock formation and stratification, in the locality where the well is to be drilled, is necessary to determine the type of drilling outfit best adapted to the purpose. For drilling hard sandstones and limestones the cable tool outfit is suitable equipment, while soft formations are more successfully penetrated with the rotary outfit. In localities where soft formations and hard rock alternate, a combination cable and hydraulic rotary outfit may be the best equipment. The author has undertaken in this volume to cover the processes of drilling wells by the two methods now most generally used: the cable tool and the hydraulic rotary, including the building of the derrick, drilling, handling casing, fishing for lost tools and the completion of the well according to the best practice of present day expert drillers.
Specifications here shown of material for building the several types of derricks and for complete outfits of drilling tools have been carefully worked out and are believed to be accurate according to modern practice.
