CA2306061C - Ramp trailer for oil field tubulars - Google Patents
Ramp trailer for oil field tubulars Download PDFInfo
- Publication number
- CA2306061C CA2306061C CA 2306061 CA2306061A CA2306061C CA 2306061 C CA2306061 C CA 2306061C CA 2306061 CA2306061 CA 2306061 CA 2306061 A CA2306061 A CA 2306061A CA 2306061 C CA2306061 C CA 2306061C
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- CA
- Canada
- Prior art keywords
- bed
- carriage
- frame
- hydraulic cylinder
- trailer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005553 drilling Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 101150006257 rig-4 gene Proteins 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/14—Racks, ramps, troughs or bins, for holding the lengths of rod singly or connected; Handling between storage place and borehole
- E21B19/15—Racking of rods in horizontal position; Handling between horizontal and vertical position
- E21B19/155—Handling between horizontal and vertical position
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Transportation (AREA)
- Earth Drilling (AREA)
Abstract
The trailer is operative to carry tubulars (drill collars or drill pipe) to a service rig and raise them to the level of the rig floor so that the rig elevators can latch onto them and stand them up in the derrick. The trailer has a roller-equipped carriage operative to move along tracks supported by and extending lengthwise of the trailer frame. An elongate flat bed is pivotally mounted at its front end to the trailer frame. The bed's rear end can be raised by a scissor hoist connected between the carriage and the rear end of the bed. The bed has grooves extending lengthwise thereof in which the tubulars sit. Thus the trailer can be backed up to within a few feet from the well. The rear end of the bed can be raised and the carriage and bed can be advanced rearwardly to bring the rear ends of the tubulars within reach of the rig elevators.
Description
2 The present invention relates to apparatus for positioning drilling
3 tubulars (drill collars or drill pipe) at the edge of the floor of a service rig within
4 reach of the rig elevators, so that the elevators can be used to raise the tubulars into a vertical position in the derrick.
8 Historically, service rigs have not been normally used in a drilling 9 mode. They are not designed or equipped for that purpose. However in recent years, with the development of top drives, there has been increasing 11 use of service rigs to deepen wells, drill out cement plugs and drill out bridge 12 plugs. This has meant that the service rig has had to run drill collars and drill 13 pipe to carry out these new drilling operations.
14 In this connection, difficulties have been encountered in picking up and laying down the drilling tubulars.
16 For example, in the specific case of drill collars (which are heavy, thick-17 walled joints of steel pipe), they are typically trucked from a storage yard to 18 the well site and are deposited on timbers laid on the ground. The service rig 19 usually does not have a catwalk and inclined ramp. Therefore, to stand the drill collar up in the service rig derrick, it is necessary for the crew to attach a 21 winch line from the crown of the derrick to the front end of the collar and 22 attempt to manually control the rear end of the collar as the line pulls the front 23 end of the collar up and toward the rig floor, while seeking to avoid having the 24 front end snag the edge of the hinged floor. This operation from time to time {E3040038.DOC;1 }1 1 leads to damaging the floor or collar threads when the collar snags the floor or 2 alternatively hurting members of the crew as they try to muscle the heavy 3 collar into the proper position. Similar problems occur when the service rig 4 lays down drill collars.
With this background in mind, it is the objective of the present invention 6 to provide apparatus which can be used to bring drilling tubulars to the well 7 site, position the front ends of the tubulars at the edge of the service rig's 8 elevated floor, within reach of the elevators, and provide an inclined ramp 9 along which the rear end of the tubular being stood up can be dragged up to floor level.
13 In accordance with the present invention, a wheeled vehicle, preferably 14 a trailer, is provided having the following components:
~ a horizontal frame supporting a pair of parallel, laterally spaced-16 apart tracks extending lengthwise of the trailer;
17 ~ a horizontal carriage having front and rear wheels supported by the 18 tracks, said carriage being operative to roll along the tracks;
19 ~ means, such as a double-acting hydraulic cylinder, connected between the frame and the carriage, for advancing and retracting 21 the carriage along the tracks;
22 ~ an elongate flat bed carried by the carriage, the bed being pivotally 23 connected to the front end of the carriage at the bed's front end, 24 with the bed's rear end left free to be raised; and {E3040038. DOC;1 }2 1 ~ means, such as a hydraulic cylinder-powered scissor hoist, 2 connected between the carriage and bed, for raising the rear end of 3 the bed;
4 ~ the bed preferably having means, such as a top wall forming a series of parallel grooves extending lengthwise of the bed, for 6 supporting, restraining (from lateral movement) and guiding tubulars 7 positioned thereon;
8 ~ whereby the tubulars may be conveyed on the trailer-mounted bed 9 to the well site, the trailer may be positioned with its rear end positioned close to but spaced laterally from the wellhead (so as not 11 to impede access to the blow-out preventer), the rear end of the 12 bed may be raised and the carriage and bed may be advanced 13 rearwardly to bring the rear ends of the tubulars to a position 14 adjacent the edge of the rig floor, where they may be latched onto by the rig elevators.
16 Preferably, a cradle for holding a top drive is supported by the frame at 17 its rear end. The cradle preferably can turn about a vertical axis. A top drive 18 is seated on the cradle. A winch assembly is supported by the frame, 19 forwardly of the cradle. The cradle and top drive can therefore be accurately aligned with the rig and the cable of the winch assembly can be used to 21 restrain and control the top drive as the rig's winch cable lifts and carries it up 22 into the rig derrick. Similarly the cable of the winch assembly can be used to 23 pull the top drive from the rig and to the cradle.
{E3040038. DOC;1 }3 1 In addition, the trailer frame preferably supports a hydraulic motor 2 assembly for supplying pressurized fluid through hoses to the cylinders and 3 the top drive, to operate them.
4 The invention is characterized by the following advantages:
~ the time required to stand a set of six collars up in the derrick can 6 be reduced by as much as 50% as compared to the prior art 7 manual/winch line system previously described;
8 ~ the rig crew do not need to as extensively manually adjust and 9 control the collars as they are being picked up or laid down, with consequent reduction in likelihood of injury;
11 ~ the bed can bring the drill collars (with attached pick-up subs) to the 12 edge of the service rig floor, where the rig elevators can be latched 13 onto them so that the rig hoisting equipment can be used to stand 14 the collars up; and ~ the trailer carries a top drive and a hydraulic motor assembly, 16 whereby drilling tubulars and rotary drive means (the top drive) may 17 be brought in one package to supply the service rig with drilling 18 capability.
{E3040038. DOC;1 }4 2 Figure 1 is a perspective view of the trailer with the bed in the upraised 3 position;
4 Figure 2 is a side view of the trailer, with parts removed, showing the bed in the rearmost position and upraised over the rig floor, with a drill collar 6 being lifted;
7 Figure 3 is a side elevation of the trailer;
8 Figure 4 is a plan view of the trailer;
9 Figure 5 is a perspective view of the trailer frame;
Figure 6 is a perspective view of the carriage;
11 Figure 7 is a perspective view of the bed;
12 Figure 8 is a perspective view of the scissor hoist;
13 Figure 9 is a side view of the scissor hoist;
14 Figure 10 is a side view of the trailer frame, carriage, carriage cylinder, bed and scissor hoist shown in the flat position;
16 Figure 11 is a side view similar to Figure 10, showing the bed raised;
17 Figure 12 is a side view similar to Figure 11, with the bed advanced to 18 the rearmost position;
19 Figure 13 is an end view of the bed, carriage and trailer frame;
Figure 14 is an end view of the trailer frame;
21 Figure 15 is an end view of the bed; and 22 Figure 16 is an end view of the carriage.
{E3040038.DOC;1 y5 2 As shown in Figure 1, a trailer 1 is provided to support and convey a 3 bed 2. The trailer 1 has a U-shaped frame 3 forming a central rectangular 4 opening 4 extending lengthwise of the frame 3 from its rear end. The frame 3 comprises a pair of parallel I-beams 5 extending along the side edges of the 6 opening 4. Each I-beam 5 has an inwardly projecting square tubing member 7 6 welded to its web to provide a track 7. In summary, there is provided a 8 trailer 1 having a frame 3 supporting a pair of parallel tracks 7 extending 9 lengthwise of the frame.
A rectangular carriage 10 is provided to fit in the opening 4 and run on 11 the tracks 7. The carriage 10 has side rails 11 connected by cross rails 12.
12 Roller holders 13 are secured to the cross rails 12.. Rollers 14 extend from 13 the holders 13 for running on the tracks 7. The carriage 10 may therefore roll 14 back and forth on the tracks 7.
A double acting hydraulic cylinder 20 is pivotally connected to the 16 frame 3 and the carriage 10 by pins 21 and support members 22 at 17 connection points 23, 24. The cylinder 20 provides means operative to 18 advance and retract the carriage 10 along the tracks 7.
19 A rectangular bed 2 is pivotally connected adjacent its front end 31 to the front end of the carriage 10 by pivot pins 32 and support members 33.
21 The rear end 34 of the bed 30 is free to be raised. The bed 30 comprises a 22 sub-frame carrying a top wall 36. The top wall 36 is grooved lengthwise to 23 form grooves 37 and corrugations 38 operative to support, restrain and guide 24 drill collars 39 positioned therein.
(E3040038.DOC;1 }6 1 A conventional scissor hoist 40 is pivotally connected by sleeves 41, 42 2 and cross-rods 43, 44 with the carriage 10 and rear end of the bed sub-frame 3 35. The hoist 40 comprises frames 45, 46 hinged together by pin 47.
4 Hydraulic cylinders 48 are pivotally connected to the frames 45, 46 by pins 49, 50 and function to unfold the hoist the raise the rear end of the bed 30.
6 Broadly stated, the scissor hoist 40 provides means, connected between the 7 carriage 10 and bed 2, for raising the rear end 34 of the bed.
8 A hydraulic motor assembly 60 is provided on the trailer 1 for actuating 9 cylinders 20, 48 as required through suitable hoses (not shown) as well as the top drive 73 through hose 75.
11 From the foregoing it will be understood that the bed 2 of a trailer 1 can 12 be loaded at a storage site with drill collars 39 and trucked to a well site. The 13 rear end of the trailer 1 can be backed to within several feet of the well 70 and 14 close to the edge 61 of the floor 62 of a service rig 63. The scissor hoist can then be actuated to raise the rear end 34 of the bed 2 above the level of 16 the rig floor. The cylinder 20 can then be actuated to advance the carriage 17 and inclined bed 2 rearwardly until the drill collars 39 are positioned within 18 reach of the rig elevators 64. Pick-up subs 65 are threaded into the raised 19 ends of the drill collars. The elevators 64 are then latched onto one of the pick-up subs 65 and the rig hoisting assembly 66 is used to drag the attached 21 collar 39 to an upright position above the floor 62. The groove corrugations 22 38 function to guide the lower end of the drill collar 39 as it is pulled along the 23 bed 2.
{E3040038. DOC;1 }7 1 In a preferred feature, a cradle 71 is mounted on a rotatable turntable 2 72 supported by the trailer frame 3, for supporting a top drive 73. The cradle 3 71 can be turned to align the top drive 73 with a lifting winch cable from the 4 rig, thereby making it easier to lift the top drive out of the cradle. A
winch 74 is provided on the trailer 1 in front of the turntable 72. The cable of the winch 6 74 can be used to restrain and control the top drive 73 as the rig winch cable 7 pulls it and raises it to the rig. Alternatively the cable of the winch 74 can be 8 used to pull the top drive 73 toward the cradle 71 when the rig hoisting cable 9 is carrying the top drive to return it to the trailer.
{E3040038.DOC;1}8
8 Historically, service rigs have not been normally used in a drilling 9 mode. They are not designed or equipped for that purpose. However in recent years, with the development of top drives, there has been increasing 11 use of service rigs to deepen wells, drill out cement plugs and drill out bridge 12 plugs. This has meant that the service rig has had to run drill collars and drill 13 pipe to carry out these new drilling operations.
14 In this connection, difficulties have been encountered in picking up and laying down the drilling tubulars.
16 For example, in the specific case of drill collars (which are heavy, thick-17 walled joints of steel pipe), they are typically trucked from a storage yard to 18 the well site and are deposited on timbers laid on the ground. The service rig 19 usually does not have a catwalk and inclined ramp. Therefore, to stand the drill collar up in the service rig derrick, it is necessary for the crew to attach a 21 winch line from the crown of the derrick to the front end of the collar and 22 attempt to manually control the rear end of the collar as the line pulls the front 23 end of the collar up and toward the rig floor, while seeking to avoid having the 24 front end snag the edge of the hinged floor. This operation from time to time {E3040038.DOC;1 }1 1 leads to damaging the floor or collar threads when the collar snags the floor or 2 alternatively hurting members of the crew as they try to muscle the heavy 3 collar into the proper position. Similar problems occur when the service rig 4 lays down drill collars.
With this background in mind, it is the objective of the present invention 6 to provide apparatus which can be used to bring drilling tubulars to the well 7 site, position the front ends of the tubulars at the edge of the service rig's 8 elevated floor, within reach of the elevators, and provide an inclined ramp 9 along which the rear end of the tubular being stood up can be dragged up to floor level.
13 In accordance with the present invention, a wheeled vehicle, preferably 14 a trailer, is provided having the following components:
~ a horizontal frame supporting a pair of parallel, laterally spaced-16 apart tracks extending lengthwise of the trailer;
17 ~ a horizontal carriage having front and rear wheels supported by the 18 tracks, said carriage being operative to roll along the tracks;
19 ~ means, such as a double-acting hydraulic cylinder, connected between the frame and the carriage, for advancing and retracting 21 the carriage along the tracks;
22 ~ an elongate flat bed carried by the carriage, the bed being pivotally 23 connected to the front end of the carriage at the bed's front end, 24 with the bed's rear end left free to be raised; and {E3040038. DOC;1 }2 1 ~ means, such as a hydraulic cylinder-powered scissor hoist, 2 connected between the carriage and bed, for raising the rear end of 3 the bed;
4 ~ the bed preferably having means, such as a top wall forming a series of parallel grooves extending lengthwise of the bed, for 6 supporting, restraining (from lateral movement) and guiding tubulars 7 positioned thereon;
8 ~ whereby the tubulars may be conveyed on the trailer-mounted bed 9 to the well site, the trailer may be positioned with its rear end positioned close to but spaced laterally from the wellhead (so as not 11 to impede access to the blow-out preventer), the rear end of the 12 bed may be raised and the carriage and bed may be advanced 13 rearwardly to bring the rear ends of the tubulars to a position 14 adjacent the edge of the rig floor, where they may be latched onto by the rig elevators.
16 Preferably, a cradle for holding a top drive is supported by the frame at 17 its rear end. The cradle preferably can turn about a vertical axis. A top drive 18 is seated on the cradle. A winch assembly is supported by the frame, 19 forwardly of the cradle. The cradle and top drive can therefore be accurately aligned with the rig and the cable of the winch assembly can be used to 21 restrain and control the top drive as the rig's winch cable lifts and carries it up 22 into the rig derrick. Similarly the cable of the winch assembly can be used to 23 pull the top drive from the rig and to the cradle.
{E3040038. DOC;1 }3 1 In addition, the trailer frame preferably supports a hydraulic motor 2 assembly for supplying pressurized fluid through hoses to the cylinders and 3 the top drive, to operate them.
4 The invention is characterized by the following advantages:
~ the time required to stand a set of six collars up in the derrick can 6 be reduced by as much as 50% as compared to the prior art 7 manual/winch line system previously described;
8 ~ the rig crew do not need to as extensively manually adjust and 9 control the collars as they are being picked up or laid down, with consequent reduction in likelihood of injury;
11 ~ the bed can bring the drill collars (with attached pick-up subs) to the 12 edge of the service rig floor, where the rig elevators can be latched 13 onto them so that the rig hoisting equipment can be used to stand 14 the collars up; and ~ the trailer carries a top drive and a hydraulic motor assembly, 16 whereby drilling tubulars and rotary drive means (the top drive) may 17 be brought in one package to supply the service rig with drilling 18 capability.
{E3040038. DOC;1 }4 2 Figure 1 is a perspective view of the trailer with the bed in the upraised 3 position;
4 Figure 2 is a side view of the trailer, with parts removed, showing the bed in the rearmost position and upraised over the rig floor, with a drill collar 6 being lifted;
7 Figure 3 is a side elevation of the trailer;
8 Figure 4 is a plan view of the trailer;
9 Figure 5 is a perspective view of the trailer frame;
Figure 6 is a perspective view of the carriage;
11 Figure 7 is a perspective view of the bed;
12 Figure 8 is a perspective view of the scissor hoist;
13 Figure 9 is a side view of the scissor hoist;
14 Figure 10 is a side view of the trailer frame, carriage, carriage cylinder, bed and scissor hoist shown in the flat position;
16 Figure 11 is a side view similar to Figure 10, showing the bed raised;
17 Figure 12 is a side view similar to Figure 11, with the bed advanced to 18 the rearmost position;
19 Figure 13 is an end view of the bed, carriage and trailer frame;
Figure 14 is an end view of the trailer frame;
21 Figure 15 is an end view of the bed; and 22 Figure 16 is an end view of the carriage.
{E3040038.DOC;1 y5 2 As shown in Figure 1, a trailer 1 is provided to support and convey a 3 bed 2. The trailer 1 has a U-shaped frame 3 forming a central rectangular 4 opening 4 extending lengthwise of the frame 3 from its rear end. The frame 3 comprises a pair of parallel I-beams 5 extending along the side edges of the 6 opening 4. Each I-beam 5 has an inwardly projecting square tubing member 7 6 welded to its web to provide a track 7. In summary, there is provided a 8 trailer 1 having a frame 3 supporting a pair of parallel tracks 7 extending 9 lengthwise of the frame.
A rectangular carriage 10 is provided to fit in the opening 4 and run on 11 the tracks 7. The carriage 10 has side rails 11 connected by cross rails 12.
12 Roller holders 13 are secured to the cross rails 12.. Rollers 14 extend from 13 the holders 13 for running on the tracks 7. The carriage 10 may therefore roll 14 back and forth on the tracks 7.
A double acting hydraulic cylinder 20 is pivotally connected to the 16 frame 3 and the carriage 10 by pins 21 and support members 22 at 17 connection points 23, 24. The cylinder 20 provides means operative to 18 advance and retract the carriage 10 along the tracks 7.
19 A rectangular bed 2 is pivotally connected adjacent its front end 31 to the front end of the carriage 10 by pivot pins 32 and support members 33.
21 The rear end 34 of the bed 30 is free to be raised. The bed 30 comprises a 22 sub-frame carrying a top wall 36. The top wall 36 is grooved lengthwise to 23 form grooves 37 and corrugations 38 operative to support, restrain and guide 24 drill collars 39 positioned therein.
(E3040038.DOC;1 }6 1 A conventional scissor hoist 40 is pivotally connected by sleeves 41, 42 2 and cross-rods 43, 44 with the carriage 10 and rear end of the bed sub-frame 3 35. The hoist 40 comprises frames 45, 46 hinged together by pin 47.
4 Hydraulic cylinders 48 are pivotally connected to the frames 45, 46 by pins 49, 50 and function to unfold the hoist the raise the rear end of the bed 30.
6 Broadly stated, the scissor hoist 40 provides means, connected between the 7 carriage 10 and bed 2, for raising the rear end 34 of the bed.
8 A hydraulic motor assembly 60 is provided on the trailer 1 for actuating 9 cylinders 20, 48 as required through suitable hoses (not shown) as well as the top drive 73 through hose 75.
11 From the foregoing it will be understood that the bed 2 of a trailer 1 can 12 be loaded at a storage site with drill collars 39 and trucked to a well site. The 13 rear end of the trailer 1 can be backed to within several feet of the well 70 and 14 close to the edge 61 of the floor 62 of a service rig 63. The scissor hoist can then be actuated to raise the rear end 34 of the bed 2 above the level of 16 the rig floor. The cylinder 20 can then be actuated to advance the carriage 17 and inclined bed 2 rearwardly until the drill collars 39 are positioned within 18 reach of the rig elevators 64. Pick-up subs 65 are threaded into the raised 19 ends of the drill collars. The elevators 64 are then latched onto one of the pick-up subs 65 and the rig hoisting assembly 66 is used to drag the attached 21 collar 39 to an upright position above the floor 62. The groove corrugations 22 38 function to guide the lower end of the drill collar 39 as it is pulled along the 23 bed 2.
{E3040038. DOC;1 }7 1 In a preferred feature, a cradle 71 is mounted on a rotatable turntable 2 72 supported by the trailer frame 3, for supporting a top drive 73. The cradle 3 71 can be turned to align the top drive 73 with a lifting winch cable from the 4 rig, thereby making it easier to lift the top drive out of the cradle. A
winch 74 is provided on the trailer 1 in front of the turntable 72. The cable of the winch 6 74 can be used to restrain and control the top drive 73 as the rig winch cable 7 pulls it and raises it to the rig. Alternatively the cable of the winch 74 can be 8 used to pull the top drive 73 toward the cradle 71 when the rig hoisting cable 9 is carrying the top drive to return it to the trailer.
{E3040038.DOC;1}8
Claims (4)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. Apparatus for positioning oilfield drill collars at the floor of a service rig having elevators and located over a wellhead at a well site, comprising:
a wheeled vehicle having a horizontal frame supporting a pair of parallel, laterally spaced-apart tracks extending lengthwise of the frame, the vehicle having front and rear ends;
a horizontal carriage having front and rear rollers supported by the tracks, said carriage being operative to roll along the tracks;
means, connected between the frame and the carriage, for advancing and retracting the carriage along the tracks;
a flat bed carried by the carriage;
means for pivotally connecting and securing the front end of the bed with the front end of the carriage, whereby the front end of the bed is hinged to the carriage and the rear end of the bed is free to be raised;
means, connected between the carriage and the bed, for raising the rear end of the bed;
the bed having means, on its upper surface, for supporting, retaining and guiding a plurality of drill collars.
a wheeled vehicle having a horizontal frame supporting a pair of parallel, laterally spaced-apart tracks extending lengthwise of the frame, the vehicle having front and rear ends;
a horizontal carriage having front and rear rollers supported by the tracks, said carriage being operative to roll along the tracks;
means, connected between the frame and the carriage, for advancing and retracting the carriage along the tracks;
a flat bed carried by the carriage;
means for pivotally connecting and securing the front end of the bed with the front end of the carriage, whereby the front end of the bed is hinged to the carriage and the rear end of the bed is free to be raised;
means, connected between the carriage and the bed, for raising the rear end of the bed;
the bed having means, on its upper surface, for supporting, retaining and guiding a plurality of drill collars.
2. The apparatus as set forth in claim 1 wherein:
the upper surface of the bed forms parallel grooves and corrugations extending longitudinally of the bed for retaining and guiding drill collars seated therein.
the upper surface of the bed forms parallel grooves and corrugations extending longitudinally of the bed for retaining and guiding drill collars seated therein.
3. The apparatus as set forth in claim 2 wherein:
the means for advancing and retracting the carriage comprises a first hydraulic cylinder;
the means for raising the rear end of the bed comprises a hydraulic cylinder scissors hoist; and the apparatus further comprises:
a cradle carried by the frame and rotatably mounted for rotation about a vertical axis;
a top drive carried by the cradle; and a hydraulic motor assembly, carried by the frame, for actuating the first hydraulic cylinder, the hydraulic cylinder scissor hoist and the top drive.
the means for advancing and retracting the carriage comprises a first hydraulic cylinder;
the means for raising the rear end of the bed comprises a hydraulic cylinder scissors hoist; and the apparatus further comprises:
a cradle carried by the frame and rotatably mounted for rotation about a vertical axis;
a top drive carried by the cradle; and a hydraulic motor assembly, carried by the frame, for actuating the first hydraulic cylinder, the hydraulic cylinder scissor hoist and the top drive.
4. Apparatus for supplying a service rig with drilling components, comprising:
a wheeled trailer having a horizontal frame supporting track means extending lengthwise of the frame, the vehicle having front and rear ends;
a carriage having front and rear rollers supported by the track means, operative to roll along the track means;
hydraulic cylinder means, connected between the frame and the carriage, for advancing and retracting the carriage along the track means;
a flat bed carried by the carriage;
means for pivotally connecting and securing the front end of the bed with the front end of the carriage, so that the front end of the bed is hinged to the carriage and the rear end of the bed is free to be raised;
a hydraulic cylinder scissor hoist, pivotally connected between the carriage and the bed, for raising the rear end of the bed;
the bed having means forming lengthwise grooves and corrugations on its upper surface for supporting, retaining and guiding a plurality of drill collars;
a rotatable cradle carried by the frame;
a top drive carried by the cradle; and a hydraulic motor assembly, carried by the frame, for actuating the hydraulic cylinder means, the hydraulic cylinder scissor hoist and the top drive.
a wheeled trailer having a horizontal frame supporting track means extending lengthwise of the frame, the vehicle having front and rear ends;
a carriage having front and rear rollers supported by the track means, operative to roll along the track means;
hydraulic cylinder means, connected between the frame and the carriage, for advancing and retracting the carriage along the track means;
a flat bed carried by the carriage;
means for pivotally connecting and securing the front end of the bed with the front end of the carriage, so that the front end of the bed is hinged to the carriage and the rear end of the bed is free to be raised;
a hydraulic cylinder scissor hoist, pivotally connected between the carriage and the bed, for raising the rear end of the bed;
the bed having means forming lengthwise grooves and corrugations on its upper surface for supporting, retaining and guiding a plurality of drill collars;
a rotatable cradle carried by the frame;
a top drive carried by the cradle; and a hydraulic motor assembly, carried by the frame, for actuating the hydraulic cylinder means, the hydraulic cylinder scissor hoist and the top drive.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2306061 CA2306061C (en) | 2000-04-18 | 2000-04-18 | Ramp trailer for oil field tubulars |
| US10/279,453 US6877942B2 (en) | 2000-04-18 | 2002-10-23 | Ramp trailer for oil field tubulars |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2306061 CA2306061C (en) | 2000-04-18 | 2000-04-18 | Ramp trailer for oil field tubulars |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2306061A1 CA2306061A1 (en) | 2001-10-18 |
| CA2306061C true CA2306061C (en) | 2005-06-28 |
Family
ID=4165948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2306061 Expired - Lifetime CA2306061C (en) | 2000-04-18 | 2000-04-18 | Ramp trailer for oil field tubulars |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2306061C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9506303B2 (en) * | 2014-03-17 | 2016-11-29 | Vektor Lift, Llc | Method and apparatus for pipe pickup and laydown |
| CN104863529A (en) * | 2015-04-09 | 2015-08-26 | 山东科瑞机械制造有限公司 | Rapid-traverse type power catwalk |
| EP3850184A4 (en) * | 2018-09-11 | 2022-07-27 | Drillform Technical Services Ltd. | Pipe handler apparatus |
-
2000
- 2000-04-18 CA CA 2306061 patent/CA2306061C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2306061A1 (en) | 2001-10-18 |
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| Date | Code | Title | Description |
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| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20200418 |