US 9,284,168 B2Granted

Guyless service rig with side-mounted, pivotally deployable rear outriggers

AssigneeMW Industries, Inc.

InventorsRobert Eugene Mau, Thomas Edwin Mau, Gregory Alan Wiedmer

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Abstract

A service or workover rig (50) that does not require guy lines is disclosed. Components of the rig (50) include a carrier (52) and a mast (120) that is movable between transport and deployed positions. Two rear outriggers (160) are pivotally mounted to a bumper (64) of the carrier (52). In their transport position, the rear outriggers (160) are positioned along respective sides (58) of the carrier (52), for instance in cutouts (60) in the bed or decking (56) of the carrier (52). In their deployed position, the rear outriggers (160) extend rearwardly of the carrier (52) and also away from their respective carrier side (58). Each rear outrigger (160) may be in the form of a hollow beam.

Claims18

Dependent claims

A mobile service rig, comprising:

a carrier comprising a plurality of tires, first and second carrier sides, a forward end, and a rear end, wherein a length dimension of said carrier extends along a central longitudinal axis that in turn extends between said forward end and said rear end of said carrier, wherein said forward end and said rear end are spaced from each other in a direction of travel of said carrier accommodated by said plurality of tires, and wherein each of said first and second carrier sides also extends between said forward end and said rear end;
a drawworks mounted on said carrier and comprising a main drum;
a mast movably mounted to said carrier and movable between a mast transport position and a mast deployed position, wherein said mast is prone relative to said carrier when in said mast transport position, wherein said mast is upstanding relative to said carrier when in said mast deployed position, wherein said mast comprises first and second mast sections that telescope relative to each other, and wherein a length dimension of said mast in said mast transport position coincides with said length dimension of said carrier;
at least one anchoring line comprising first and second anchoring lines, wherein opposite ends of each anchoring line used by said mobile service rig is anchored solely to said mobile service rig;
first and second rear outriggers that are pivotally connected with said carrier by first and second pivotal connections, respectively, wherein one end of said first anchoring line is anchored to said first rear outrigger, and wherein one end of said second anchoring line is anchored to said second rear outrigger;
an outrigger transport position for each of said first and second rear outriggers;
and
an outrigger deployed position for each of said first and second rear outriggers, wherein each of said first and second rear outriggers are pivotable relative to said carrier between said outrigger transport position and said outrigger deployed position;
wherein when said first and second rear outriggers are in said outrigger transport position:
a) said first rear outrigger extends alongside said first carrier side from said first pivotal connection with said carrier in a direction of said forward end of said carrier and terminates at a first free end of said first rear outrigger such that said first free end of said first rear outrigger is positioned forward of said first pivotal connection with said carrier and such that said first free end of said first rear outrigger and said first pivotal connection are disposed at different longitudinal locations relative to said central longitudinal axis;
and b) said second rear outrigger extends alongside said second carrier side from said second pivotal connection with said carrier in a direction of said forward end of said carrier and terminates at a second free end of said second rear outrigger such that said second free end of said second rear outrigger is positioned forward of said second pivotal connection with said carrier and such that said second free end of said second rear outrigger and said second pivotal connection are disposed at different longitudinal locations relative to said central longitudinal axis;
wherein when said first and second rear outriggers are in said outrigger deployed position:
a) said first and second rear outriggers extend from said first and second pivotal connections, respectively, in a direction that is away from said first and second carrier sides, respectively, that is away from said forward end of said carrier, and that is rearwardly of said rear end of said carrier;
b) said first free end of said first rear outrigger is rearward of each of said forward end of said carrier, said first pivotal connection with said carrier, and said rear end of said carrier;
c) said second free end of said second rear outrigger is rearward of each of said forward end of said carrier, said second pivotal connection with said carrier, and said rear end of said carrier;
d) an included angle between said first rear outrigger and a first reference axis, that is parallel to said central longitudinal axis and that extends through said first pivotal connection with said carrier, is less than 90° and is measured from a portion of said first reference axis that is rearward of said first pivotal connection;
and e) an included angle between said second rear outrigger and a second reference axis, that is parallel to said central longitudinal axis and that extends through said second pivotal connection with said carrier, is less than 90° and is measured from a portion of said second reference axis that is rearward of said second pivotal connection;
wherein said first free end of said first rear outrigger pivots through an angle of more than 90° in changing from said outrigger transport position to said outrigger deployed position;
and
wherein said second free end of said second rear outrigger pivots through an angle of more than 90° in changing from said outrigger transport position to said outrigger deployed position.

17 more elements

Dependencies are inferred from the claim text.

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Abstract

A mobile service rig, comprising:

a carrier comprising a plurality of tires, first and second carrier sides, a forward end, and a rear end, wherein a length dimension of said carrier extends along a central longitudinal axis that in turn extends between said forward end and said rear end of said carrier, wherein said forward end and said rear end are spaced from each other in a direction of travel of said carrier accommodated by said plurality of tires, and wherein each of said first and second carrier sides also extends between said forward end and said rear end;
a drawworks mounted on said carrier and comprising a main drum;
a mast movably mounted to said carrier and movable between a mast transport position and a mast deployed position, wherein said mast is prone relative to said carrier when in said mast transport position, wherein said mast is upstanding relative to said carrier when in said mast deployed position, wherein said mast comprises first and second mast sections that telescope relative to each other, and wherein a length dimension of said mast in said mast transport position coincides with said length dimension of said carrier;
at least one anchoring line comprising first and second anchoring lines, wherein opposite ends of each anchoring line used by said mobile service rig is anchored solely to said mobile service rig;
first and second rear outriggers that are pivotally connected with said carrier by first and second pivotal connections, respectively, wherein one end of said first anchoring line is anchored to said first rear outrigger, and wherein one end of said second anchoring line is anchored to said second rear outrigger;
an outrigger transport position for each of said first and second rear outriggers;
and
an outrigger deployed position for each of said first and second rear outriggers, wherein each of said first and second rear outriggers are pivotable relative to said carrier between said outrigger transport position and said outrigger deployed position;
wherein when said first and second rear outriggers are in said outrigger transport position:
a) said first rear outrigger extends alongside said first carrier side from said first pivotal connection with said carrier in a direction of said forward end of said carrier and terminates at a first free end of said first rear outrigger such that said first free end of said first rear outrigger is positioned forward of said first pivotal connection with said carrier and such that said first free end of said first rear outrigger and said first pivotal connection are disposed at different longitudinal locations relative to said central longitudinal axis;
and b) said second rear outrigger extends alongside said second carrier side from said second pivotal connection with said carrier in a direction of said forward end of said carrier and terminates at a second free end of said second rear outrigger such that said second free end of said second rear outrigger is positioned forward of said second pivotal connection with said carrier and such that said second free end of said second rear outrigger and said second pivotal connection are disposed at different longitudinal locations relative to said central longitudinal axis;
wherein when said first and second rear outriggers are in said outrigger deployed position:
a) said first and second rear outriggers extend from said first and second pivotal connections, respectively, in a direction that is away from said first and second carrier sides, respectively, that is away from said forward end of said carrier, and that is rearwardly of said rear end of said carrier;
b) said first free end of said first rear outrigger is rearward of each of said forward end of said carrier, said first pivotal connection with said carrier, and said rear end of said carrier;
c) said second free end of said second rear outrigger is rearward of each of said forward end of said carrier, said second pivotal connection with said carrier, and said rear end of said carrier;
d) an included angle between said first rear outrigger and a first reference axis, that is parallel to said central longitudinal axis and that extends through said first pivotal connection with said carrier, is less than 90° and is measured from a portion of said first reference axis that is rearward of said first pivotal connection;
and e) an included angle between said second rear outrigger and a second reference axis, that is parallel to said central longitudinal axis and that extends through said second pivotal connection with said carrier, is less than 90° and is measured from a portion of said second reference axis that is rearward of said second pivotal connection;
wherein said first free end of said first rear outrigger pivots through an angle of more than 90° in changing from said outrigger transport position to said outrigger deployed position;
and
wherein said second free end of said second rear outrigger pivots through an angle of more than 90° in changing from said outrigger transport position to said outrigger deployed position.

17 more elements