Abstract: An arrangement to support a drawworks and drilling mast in elevated position during drilling operations and which also functions to transport the drawworks and drilling mast includes a base support and an elevated support with jacks pivotally conncted to the base support and the elevatable support and extending herebetween. Wheels are mounted on the elevatable support for transporting the base support elevatable support, the drilling mast and drawworks carried on the elevatable support. Brace members are pivotally connected between the base support and elevatable support to retain the elevatable support in elevated position during drilling operations.

Abstract: A sectionalized drilling mast, power arrangement and support means therefor includes base means to support the drilling mast means when reclined and when erect.

Abstract: Telescopable drilling mast means is transportable on and pivotally connected to a first trailer means. Setback tower means is pivotally connected to the drilling mast means and to the first trailer means.Second trailer means are provided with elevatable drawworks support means with drawworks, power source and rotary table thereon which elevatable drawworks support means is transportable on and pivotally mounted on the second trailer means.Means secure the first and second trailer means in end to end relation to position the drawworks support means and drilling mast means in longitudinal alignment, and load bearing means support the first and second trailer means in position on the earth's surface.