Tiltable top drive guide rail

Abstract

The invention discloses a tiltable top drive guide rail, and relates to the technical field of drilling equipment, the tiltable top drive guide rail comprises an upper section guide rail, a middle section guide rail and a lower section guide rail which are arranged in sequence, an upper fixing device is fixed on the upper section guide rail, and the upper fixing device is fixedly connected with a derrick cross beam; the lower end of the upper section guide rail is rotationally connected with the upper end of the middle section guide rail through a guide rail pin shaft, the lower end of the middle section guide rail is connected with a lower fixing device through an inclined oil cylinder, and the lower fixing device is fixedly connected to the lower section guide rail and fixedly connected with a derrick cross beam. A reverse twisting device is further connected between the lower end of the middle section guide rail and the lower fixing device and is used for bearing the upper buckling torque of a top drive; the inclined oil cylinder can drive the middle-section guide rail to be in a vertical state or an inclined state, and when the middle-section guide rail is in the inclined state, the inclination angle of the middle-section guide rail is kept consistent with that of a drill rod in a mouse hole. The drilling operation time can be shortened, the drilling efficiency is improved, and the labor intensity of workers is relieved.

Description

Technical Field

[0001] The invention relates to the technical field of drilling equipment, in particular to a tiltable top drive guide rail. Background Art

[0002] When the top drive is connected to the rathole drill pipe, a mushroom head (a drill pipe lifting tool) needs to be installed on the rathole drill pipe first, the top drive lifting ring is tilted forward with the elevator, and the mushroom head is clamped with the elevator to lift the drill pipe from the rathole to the wellhead. After the drill pipe is connected to the drill string in the well, the mushroom head needs to be removed after the whole is lowered to a suitable height, and the top drive reducer can be connected to the drill pipe before drilling. This process requires the installation and removal of the mushroom head, which increases the time of drilling operations and is labor-intensive for workers. Summary of the invention

[0003] The purpose of the present invention is to provide a tiltable top drive guide rail to solve the problems existing in the above-mentioned prior art, which can shorten the drilling operation time, improve the drilling efficiency and reduce the labor intensity of workers.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides a tiltable top drive guide rail, comprising an upper guide rail, a middle guide rail and a lower guide rail which are arranged in sequence, an upper fixing device being fixed on the upper guide rail, the upper fixing device being fixedly connected to a derrick cross beam, the lower end of the upper guide rail being rotatably connected to the upper end of the middle guide rail via a guide pin, the lower end of the middle guide rail being connected to a lower fixing device via a tilting oil cylinder, the lower fixing device being fixedly connected to the lower guide rail and to the derrick cross beam, an anti-torsion device being further connected between the lower end of the middle guide rail and the lower fixing device for bearing the buckling torque of the top drive; the tilting oil cylinder can drive the middle guide rail to be in a vertical state or a tilted state, and when the middle guide rail is in a tilted state, its tilt angle is consistent with that of a drill rod in a mouse hole.

[0006] In one embodiment, the anti-torsion device includes a first anti-torsion frame and a second anti-torsion frame, one end of the first anti-torsion frame is rotatably connected to the middle guide rail via a pin, and the other end is rotatably connected to one end of the second anti-torsion frame via a pin, and the other end of the second anti-torsion frame is rotatably connected to the lower fixing device via a pin.

[0007] In one embodiment, a positioning block is fixedly provided on the inner side of each of the two ends of the upper guide rail in the axial direction parallel to the guide rail pin shaft, and the positioning blocks at both ends can position the middle guide rail in the axial direction parallel to the guide rail pin shaft, so that the upper guide rail and the middle guide rail are relatively fixed in the axial direction parallel to the guide rail pin shaft.

[0008] In one embodiment, a guide positioning block is fixedly provided on the inner side of each of the two ends of the lower guide rail in the axial direction parallel to the guide rail pin shaft, which is used to guide and position the middle guide rail when the middle guide rail returns to dock with the lower guide rail, so that after the middle guide rail returns to dock with the lower guide rail, the middle guide rail and the lower guide rail are relatively fixed in the axial direction parallel to the guide rail pin shaft.

[0009] In one embodiment, the upper fixing device includes an upper connecting beam and an upper fixing seat, one end of the upper connecting beam is fixedly connected to the upper guide rail by bolts, and the other end is provided with a plurality of bolt holes for being fixedly connected to the upper fixing seat by bolts.

[0010] In one embodiment, the lower fixing device includes a lower connecting beam and a lower fixing seat, one end of the lower connecting beam is fixedly connected to the lower guide rail by bolts, and the other end is provided with a plurality of bolt holes for being fixedly connected to the lower fixing seat by bolts.

[0011] In one embodiment, the lower fixed seat and the middle guide rail are both fixedly provided with cylinder connecting ear seats, and the two ends of the tilting cylinder are rotatably connected to the cylinder connecting ear seats on both sides respectively.

[0012] In one embodiment, the lower connecting beam and the middle guide rail are both fixedly provided with anti-twist device ear seats, and the two ends of the anti-twist device are rotatably connected to the anti-twist device ear seats on both sides respectively.

[0013] In one embodiment, the upper end of the upper guide rail is suspended on the derrick overhead travelling carriage.

[0014] In one embodiment, a chain ear seat is fixedly provided at the upper end of the upper guide rail, the chain ear seat is connected to one end of a chain, and the other end of the chain is connected to a crown block ear seat on the derrick crown block.

[0015] Compared with the prior art, the present invention has achieved the following technical effects:

[0016] The tiltable top drive guide rail provided by the present invention is that when the drilling rig is in normal drilling operation, the tilting oil cylinder is in a retracted state, the guide rail is in a vertical state, and the top drive can move vertically up and down; when it is necessary to connect the rathole drill rod, the tilting oil cylinder is extended, the middle section guide rail is tilted, and the top drive will also tilt along with the tilted middle section guide rail, and the tilting angle is just consistent with the drill rod in the rathole, so that the active drill rod on the top drive can be smoothly connected with the rathole drill rod without damaging the drill rod buckle shape; when the active drill rod is connected with the rathole drill rod, the top drive is lifted up, and the top drive lifts the rathole drill rod out of the rathole along the tilted middle section guide rail, and the tilting oil cylinder is retracted, and the middle section guide rail is pulled to a vertical state, at this time, the rathole drill rod is vertical to the wellhead, and the top drive is lowered to connect the rathole drill rod with the active drill rod, and the drilling operation can be carried out after the connection is completed. In this process, the well site staff does not need to disassemble the mushroom head, which reduces the operation time, improves the drilling efficiency, and reduces the labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 is a schematic diagram of a tiltable top drive guide rail in an embodiment of the present invention when the middle section of the guide rail is in a vertical state;

[0019] Figure 2 It is a schematic diagram of the partial structure of the tiltable top drive guide rail in the embodiment of the present invention when the middle section of the guide rail is in a tilted state;

[0020] Figure 3 It is a schematic structural diagram of the joint between the upper guide rail and the middle guide rail in an embodiment of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of the upper end of the lower guide rail in an embodiment of the present invention for docking with the middle guide rail.

[0022] In the figure: 1-upper guide rail, 2-middle guide rail, 3-lower guide rail, 4-upper fixing device, 5-derrick crossbeam, 6-guide rail pin, 7-tilting cylinder, 8-lower fixing device, 9-anti-torsion device, 10-first anti-torsion frame, 11-second anti-torsion frame, 12-upper connecting beam, 13-upper fixing seat, 14-lower connecting beam, 15-lower fixing seat, 16-cylinder connecting ear seat, 17-cylinder pin, 18-anti-torsion device ear seat, 19-anti-torsion device pin, 20-crane ear seat, 21-chain ear seat, 22-chain, 23-positioning block, 24-guide positioning block, 25-slope section, 26-plane section. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The purpose of the present invention is to provide a tiltable top drive guide rail to solve the problems existing in the prior art, shorten the drilling operation time, improve the drilling efficiency, and reduce the labor intensity of workers.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] like Figure 1-Figure 4 As shown, the present embodiment provides a tiltable top drive guide rail, comprising an upper guide rail 1, a middle guide rail 2 and a lower guide rail 3 which are arranged in sequence, an upper fixing device 4 being fixed on the upper guide rail 1, the upper fixing device 4 being fixedly connected to a derrick cross beam 5, the lower end of the upper guide rail 1 being rotatably connected to the upper end of the middle guide rail 2 via a guide pin 6, the lower end of the middle guide rail 2 being connected to a lower fixing device 8 via a tilting cylinder 7, the lower fixing device 8 being fixedly connected to the lower guide rail 3 and to the derrick cross beam 5, an anti-torsion device 9 being further connected between the lower end of the middle guide rail 2 and the lower fixing device 8 for bearing the buckling torque of the top drive; the tilting cylinder 7 can drive the middle guide rail 2 to be in a vertical state or a tilted state, and when the middle guide rail 2 is in a tilted state, its tilt angle is consistent with that of the drill pipe in the mouse hole.

[0027] During normal drilling operation of the drilling rig, the tilting cylinder 7 is in a retracted state, the guide rail is in a vertical state, and the top drive can move vertically up and down; when it is necessary to connect the rathole drill rod, the tilting cylinder 7 is extended, the middle section guide rail 2 is tilted, and the top drive will also tilt along with the tilted middle section guide rail 2, and the tilting angle is just consistent with the drill rod in the rathole, so that the active drill rod on the top drive can be smoothly connected with the rathole drill rod without damaging the drill rod buckle shape; when the active drill rod is connected with the rathole drill rod, the top drive is lifted up, and the top drive lifts the rathole drill rod out of the rathole along the tilted middle section guide rail, and the tilting cylinder is retracted, and the middle section guide rail is pulled to a vertical state. At this time, the rathole drill rod is vertical to the wellhead, and the top drive is lowered to connect the rathole drill rod with the active drill rod. After the connection is completed, the drilling operation can be carried out. In this process, the well site staff does not need to disassemble the mushroom head, which reduces the operation time, improves the drilling efficiency, and reduces the labor intensity. When the top drive is connected to the rat hole drill pipe, the anti-torque device 9 can withstand the make-up torque of the top drive.

[0028] In this embodiment, the anti-torsion device 9 includes a first anti-torsion frame 10 and a second anti-torsion frame 11. One end of the first anti-torsion frame 10 is rotatably connected to the middle guide rail 2 through a pin shaft, and the other end is rotatably connected to one end of the second anti-torsion frame 11 through a pin shaft. The other end of the second anti-torsion frame 11 is rotatably connected to the lower fixing device 8 through a pin shaft.

[0029] like Figure 3 As shown, in this embodiment, a positioning block 23 is fixedly provided on the inner side of both ends of the upper guide rail 1 in the axial direction parallel to the guide rail pin shaft 6. The positioning blocks 23 at both ends can position the middle guide rail 2 in the axial direction parallel to the guide rail pin shaft 6, so that the upper guide rail 1 and the middle guide rail 2 are parallel to the axial direction of the guide rail pin shaft 6 ( Figure 3 The upper guide rail 1 and the middle guide rail 2 are relatively fixed in the axial direction parallel to the guide pin 6, that is, the upper guide rail 1 and the middle guide rail 2 cannot move relative to each other in the axial direction parallel to the guide pin 6, to ensure that after the middle guide rail 2 returns to its original position, there is no unevenness between the left and right guide rail surfaces, to ensure the flatness between the upper guide rail 1 and the middle guide rail 2, and to ensure smooth movement of the top drive.

[0030] like Figure 4 As shown, in this embodiment, a guide positioning block 24 is fixedly provided on the inner side of each end of the lower guide rail 3 in the axial direction parallel to the guide rail pin 6, which is used to guide and position the middle guide rail 2 in the axial direction parallel to the guide rail pin 6, so that after the middle guide rail 2 returns to dock with the lower guide rail 3, the middle guide rail 2 and the lower guide rail 3 are relatively fixed in the axial direction parallel to the guide rail pin 6. Among them, the guide positioning block 24 is a wedge-shaped structure. When the middle guide rail 2 is retracted from an inclined state to a vertical state and docked with the lower guide rail 3, the slope sections 25 of the wedge-shaped structure at both ends can guide the middle guide rail 2, so that the middle guide rail 2 can be retracted more smoothly. After the middle guide rail 2 returns to its original position, the flat sections 26 of the wedge-shaped structure at both ends can position the middle guide rail 2, so that the middle guide rail 2 and the lower guide rail 3 cannot move relative to each other in the axial direction parallel to the guide pin shaft 6, ensuring that after the middle guide rail 2 returns to its original position, there is no unevenness on the left and right guide rail surfaces, thereby ensuring the flatness of the entire guide rail and ensuring smooth movement of the top drive.

[0031] In this embodiment, the upper fixing device 4 includes an upper connecting beam 12 and an upper fixing seat 13. One end of the upper connecting beam 12 is fixedly connected to the upper guide rail 1 by bolts, and the other end is provided with a plurality of bolt holes for being fixedly connected to the upper fixing seat 13 by bolts. The upper fixing seat 13 is fixedly connected to the derrick beam 5. The lower fixing device 8 includes a lower connecting beam 14 and a lower fixing seat 15. One end of the lower connecting beam 14 is fixedly connected to the lower guide rail 3 by bolts, and the other end is provided with a plurality of bolt holes for being fixedly connected to the lower fixing seat 15 by bolts. The lower fixing seat 15 is fixedly connected to the derrick beam 5.

[0032] In this embodiment, the lower fixed seat 15 and the middle guide rail 2 are both fixedly provided with cylinder connecting ear seats 16 , and the two ends of the tilting cylinder 7 are rotatably connected to the cylinder connecting ear seats 16 on both sides through the cylinder pin shaft 17 .

[0033] In this embodiment, the lower connecting beam 14 and the middle guide rail 2 are both fixedly provided with anti-twist device ears 18, and the two ends of the anti-twist device 9 are rotatably connected to the anti-twist device ears 18 on both sides through the anti-twist device pins 19.

[0034] In this embodiment, the upper end of the upper guide rail 1 is suspended on the derrick trolley. A ring chain ear seat 21 is fixedly provided on the upper end of the upper guide rail 1, and the ring chain ear seat 21 is connected to one end of a ring chain 22, and the other end of the ring chain 22 is connected to the trolley ear seat 20 on the derrick trolley. The upper guide rail 1 is suspended on the derrick trolley through the ring chain 22.

[0035] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A tiltable top drive guide rail, characterized in that: It comprises an upper guide rail, a middle guide rail and a lower guide rail which are arranged in sequence, an upper fixing device being fixed on the upper guide rail, the upper fixing device being fixedly connected to the derrick cross beam, the lower end of the upper guide rail being rotatably connected to the upper end of the middle guide rail via a guide rail pin, the lower end of the middle guide rail being connected to a lower fixing device via a tilting oil cylinder, the lower fixing device being fixedly connected to the lower guide rail and to the derrick cross beam, an anti-torsion device being further connected between the lower end of the middle guide rail and the lower fixing device for bearing the buckling torque of the top drive; the tilting oil cylinder can drive the middle guide rail to be in a vertical state or a tilted state, and when the middle guide rail is in a tilted state, its tilt angle is consistent with that of the drill rod in the mouse hole.

2. The tiltable top drive guide rail according to claim 1, characterized in that: The anti-torsion device includes a first anti-torsion frame and a second anti-torsion frame, one end of the first anti-torsion frame is rotatably connected to the middle guide rail through a pin shaft, and the other end is rotatably connected to one end of the second anti-torsion frame through a pin shaft, and the other end of the second anti-torsion frame is rotatably connected to the lower fixing device through a pin shaft.

3. The tiltable top drive guide rail according to claim 1, characterized in that: The upper guide rail is fixed with a positioning block on the inner side of both ends parallel to the axial direction of the guide rail pin shaft. The positioning blocks at both ends can position the middle guide rail in the axial direction parallel to the guide rail pin shaft, so that the upper guide rail and the middle guide rail are relatively fixed in the axial direction parallel to the guide rail pin shaft.

4. The tiltable top drive guide rail according to claim 1, characterized in that: The lower guide rail is provided with a guide positioning block fixedly disposed on the inner side of both ends parallel to the axial direction of the guide rail pin shaft, for guiding and positioning the middle guide rail when the middle guide rail returns to dock with the lower guide rail, so that after the middle guide rail returns to dock with the lower guide rail, the middle guide rail and the lower guide rail are relatively fixed in the axial direction parallel to the guide rail pin shaft.

5. The tiltable top drive guide rail according to claim 1, characterized in that: The upper fixing device comprises an upper connecting beam and an upper fixing seat. One end of the upper connecting beam is fixedly connected to the upper guide rail by bolts, and the other end is provided with a plurality of bolt holes for being fixedly connected to the upper fixing seat by bolts.

6. The tiltable top drive guide rail according to claim 1, characterized in that: The lower fixing device comprises a lower connecting beam and a lower fixing seat. One end of the lower connecting beam is fixedly connected to the lower guide rail by bolts, and the other end is provided with a plurality of bolt holes for being fixedly connected to the lower fixing seat by bolts.

7. The tiltable top drive guide rail according to claim 6, characterized in that: The lower fixed seat and the middle guide rail are both fixedly provided with oil cylinder connecting ear seats, and the two ends of the tilting oil cylinder are respectively rotatably connected to the oil cylinder connecting ear seats on both sides.

8. The tiltable top drive guide rail according to claim 6, characterized in that: The lower connecting beam and the middle guide rail are both fixedly provided with anti-twist device ear seats, and the two ends of the anti-twist device are rotatably connected to the anti-twist device ear seats on both sides.

9. The tiltable top drive guide rail according to claim 1, characterized in that: The upper end of the upper guide rail is suspended on the derrick overhead travelling carriage.

10. The tiltable top drive guide rail according to claim 9, characterized in that: A ring chain ear seat is fixedly provided at the upper end of the upper guide rail, the ring chain ear seat is connected to one end of the ring chain, and the other end of the ring chain is connected to the crown block ear seat on the derrick crown block.

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