Low lift, elevatable high floor drilling mast and substructure arrangement therefor
First Claim
1. A low lift, high floor drilling mast and substructure arrangement therefor comprising:
- a. base means for resting on the earth'"'"'s surface;
b. drilling mast support means pivotally connected to said base means;
c. setback tower means pivotally connected to said drilling mast support means and to said base means;
d. elevatable drawworks support means pivotally mounted on said base means;
e. drilling mast means secured to said mast support means; and
f. lifting frame means connected to said drilling mast support means whereby said drilling mast means, support means therefor and setback tower means may be simultaneously elevated from a reclined position to an upright position on said base means.
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Accused Products
Abstract
Low level base means extend longitudinally on the earth'"'"'s surface. Drilling mast support means are positioned adjacent and pivotally connected to the base means and setback tower means are pivotally connected to the mast support means and to the base means. Drilling mast means are secured to the mast support means. Lifting frame means are connected to the drilling mast support means whereby said drilling mast support means, mast connected thereto and setback tower means may be simultaneously elevated from a reclined position to an upright position on the base means. Cable means may be secured at one end to the lifting frame means and extended around sheave means on the base means over sheave means on the lifting frame means and under sheave means on the mast support means and then connected at its other end with any suitable power source to exert a pull on the cable and elevate the mast support, mast and setback tower to an upright position on the base means where the mast may be secured in upright position. Elevatable drawworks support means is pivotally connected to the low level base means adjacent the other side of the drilling mast support means. The drawworks support means is provided with rotary table support means projecting from the drawworks support means. When the elevatable drawworks support means is raised to position it adjacent the upright drilling mast support means in a manner well known, the rotary table support means is properly positioned adjacent the drilling mast setback tower means so that the rotary table support means may be secured to the elevated setback tower to form a rigid substructure for the upright drilling mast.
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Citations
13 Claims
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1. A low lift, high floor drilling mast and substructure arrangement therefor comprising:
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a. base means for resting on the earth'"'"'s surface; b. drilling mast support means pivotally connected to said base means; c. setback tower means pivotally connected to said drilling mast support means and to said base means; d. elevatable drawworks support means pivotally mounted on said base means; e. drilling mast means secured to said mast support means; and f. lifting frame means connected to said drilling mast support means whereby said drilling mast means, support means therefor and setback tower means may be simultaneously elevated from a reclined position to an upright position on said base means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A low lift, high floor drilling mast and substructure arrangement therefor comprising:
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a. base means for resting on the earth'"'"'s surface; b. drilling mast support means pivotally connected to said base means; c. drilling mast means secured to said mast support means; d. setback tower means pivotally connected to said drilling mast support means and to said base means; e. said setback tower means extending longitudinally of and between said mast support and mast means secured thereto and supporting said mast support and mast means on said base means when said mast, mast support means and setback tower means are in reclining position thereon. - View Dependent Claims (13)
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Specification