A pontoon guide rail

Abstract

The application discloses a pontoon type guide rail for a track drilling machine and relates to the technical field of oil field drilling and repairing operation equipment. The guide rail is suitable for operation in a frozen land area and can be cyclically installed and used, so that the track drilling machine can move to infinity along the guide rail. The guide rail is a steel frame structure and has a pontoon type full-closed shape. A steel rail beam is arranged in the middle of the guide rail and is used for the track drilling machine wheel set to walk. Each of the two sides of the guide rail is provided with a bearing beam, which is used for the track drilling machine mechanical support leg to transfer load when the track drilling machine is operated. When the drilling machine is moved from one well head to the next well head, the drilling machine parts do not need to be disassembled, the moving time and cost are saved, and the guide rail is used. Only gravel needs to be laid under the drilling machine, and a concrete foundation does not need to be built, so that the drilling period is shortened and the drilling cost is reduced. The internal cavity of the guide rail is used as a steam passage and is used for heating separation when the bottom surface of the guide rail and the ground are frozen in winter. The pontoon type guide rail is a full-closed pontoon structure, and when the ground is soft in spring and the foundation is wrapped by mud, the pontoon buoyancy can offset the weight of the guide rail. The guide rail has a shuttle type shape and is suitable for being pulled on a muddy ground.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of oilfield drilling and repairing equipment, in particular to a pontoon type guide rail for track drilling machine. BACKGROUND

[0002] The oilfield drilling and repairing machine needs a foundation to bear its own weight and the load during operation. The foundation is usually a steel and wood foundation that can be moved or a cast-in-place cement foundation. The track drilling machine is applied in the frozen land area. In winter, the ground is hard, and in spring, the ground is soft. The steel and wood foundation has a small single block area, and the main body is a wooden structure. The local bearing capacity is small, and it is not suitable for use after the ground is thawed in spring. The cast-in-place cement foundation has high manufacturing cost and is discarded after being used once, so it is also not suitable. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a pontoon type guide rail for track drilling machine, which is suitable for operation in the frozen land area, can be installed and used circularly, and enables the track drilling machine to move to infinity along the guide rail.

[0004] The technical scheme of the present application is as follows:

[0005] The pontoon type guide rail is characterized in that the guide rail is a steel frame structure as a whole, has a pontoon type fully enclosed shape, has a steel rail beam in the middle for the track drilling machine wheel set to walk, and has a bearing beam on each side for the track drilling machine mechanical support leg to transfer the load during operation.

[0006] 1. The guide rail is a steel frame structure as a whole, and multiple groups of rib plates are uniformly distributed inside the guide rail to disperse the local load and enable the entire guide rail to be uniformly stressed.

[0007] 2. The pontoon type fully enclosed structure has a larger buoyancy formed by the internal cavity in the mud water than the self weight of the guide rail.

[0008] 3. The pontoon type fully enclosed structure has the internal cavity as a steam passage.

[0009] 4. The pontoon type fully enclosed shape has a small-middle-large shuttle shape with the upper inclined surfaces on both ends.

[0010] 5. The middle steel rail beam has a steel rail on the upper surface and an H steel beam on the lower surface, and the circular holes are uniformly distributed on the web of the H steel beam to serve as the bearing holes for the track drilling machine walker.

[0011] 6. The mechanical support leg bearing beams on both sides are T steel beams, and multiple groups of rib plates are uniformly distributed on the T steel beams to enable the track drilling machine mechanical support leg to be uniformly stressed at any position.

[0012] 7. The pontoon type guide rail is a symmetrical structure, and any guide rail can be replaced in the guide rail chain formed by the combination of multiple guide rails.

[0013] 8. The connecting taper pin between the pontoon guide rail is a taper pin + bolt structure, the taper pin cylindrical part bears the radial force applied by the adjacent guide rails, the conical part plays a guiding role, and the bolt part presses the adjacent guide rails.

[0014] The beneficial effects of the present application are:

[0015] 1. The pontoon guide rail can be recycled and reused. A plurality of guide rails are combined to form two parallel guide rail chains, which bear the entire track rig. After the track rig wheel set passes, the idle guide rail can be moved to the front of the track rig walking area, and the cycle can be moved to an infinite distance. Compared with the trackless rig, the rig does not need to be disassembled when moving from one wellhead to the next wellhead, saving relocation time and cost.

[0016] 2. The pontoon guide rail is a steel integral structure with large bearing area, which can disperse the local concentrated load of the rig to the whole body and transfer the pressure to the ground evenly, reducing the local pressure on the ground. The rig only needs to be paved with gravel, without the need to build a concrete foundation, shortening the drilling cycle and reducing the drilling cost.

[0017] 3. The pontoon guide rail is connected into a rigid structure by connecting taper pins, which can share the pressure of the rig.

[0018] 4. The pontoon guide rail is a fully enclosed pontoon structure, and the internal cavity is used as a steam passage for heating and separating the guide rail bottom surface from the ground when it freezes in winter.

[0019] 5. The pontoon guide rail is a fully enclosed pontoon structure, which can offset its own weight by the buoyancy of the pontoon when the ground is soft in spring and the foundation is wrapped in mud.

[0020] 6. The pontoon guide rail has a small middle large shuttle shape with two ends, each with an upward inclined surface, which is suitable for dragging on muddy ground. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a front view of the guide rail.

[0022] Figure 2 It is a plan view of the guide rail.

[0023] Figure 3 It is a left view of a pair of guide rails.

[0024] Figure 4 It is a sectional view of the guide rail.

[0025] Figure 5 It is a partial view of the end surface connecting taper pin of the guide rail.

[0026] Figure 1. track drill walking device, 2. track drill wheel group, 3. track drill mechanical support leg, 4. steel rail beam, 5. mechanical support leg bearing beam one, 6 mechanical support leg bearing beam two, 7. drag lever, 8. connecting rod, 9. steam passage one, 10. crane rail, 11. H steel beam, 12. walking device bearing hole, 13. steam passage two, 14. connecting taper pin, 15. grommet, 16. nut. DETAILED DESCRIPTION

[0027] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0028] In this embodiment, the guide rail is a steel frame structure as a whole, a pontoon type full-enclosed structure, with a steel rail beam 4 in the middle for the track drill wheel group 2 to walk on, and a mechanical support leg bearing beam one 5 and a mechanical support leg bearing beam two 6 on each side for the track drill mechanical support leg 3 to transfer load during operation.

[0029] In this embodiment, the pontoon type full-enclosed structure should be calculated for total volume, so that the buoyancy formed by the internal cavity in the mud is greater than the weight of the guide rail itself.

[0030] In this embodiment, the pontoon type full-enclosed structure, as shown in Figure 4 , the internal cavities of the mechanical support leg bearing beam one 5 and the mechanical support leg bearing beam two 6 respectively serve as steam passages for heating separation when the bottom surface of the guide rail and the ground freeze in winter.

[0031] In this embodiment, as shown in Figure 1 , Figure 2 , the pontoon type full-enclosed structure has a closed end at each end, each with an upwardly inclined slope, and the whole has a shuttle shape, which is suitable for dragging on muddy ground at the well site to save short-distance relocation time.

[0032] In this embodiment, as shown in Figure 4 , the steel rail beam 4 in the middle has a crane rail 10 on the top and an H steel beam 11 on the bottom, and the H steel beam web plate is uniformly distributed with circular holes serving as walking device bearing holes 12 of the track drill walking device connecting seat, which, after inserting the pin shaft, can make the walking device hydraulic cylinder push the track drill wheel group 2 to roll along the crane rail 10.

[0033] In this embodiment, as shown in Figure 4 , the mechanical support leg bearing beam one 5 and the mechanical support leg bearing beam two 6 on the two sides are T steel beams, with multiple groups of rib plates uniformly distributed under the upper flange plate, so that the track drill mechanical support leg lower support has multiple vertical plate supports at any position, making the bearing beam uniformly stressed and improving the structural stability.

[0034] In this embodiment, the pontoon type guide rail has a symmetrical structure at the two ends, and any guide rail can be replaced with each other, so that it can be freely combined, and multiple guide rails can form a guide rail chain.Figure 3 As shown, the two rows of guide rails are kept apart by connecting rods 8 to carry the whole track drill. When the track drill wheel group passes, the idle guide rails can be moved to the front of the track drill walking, and the cycle can make the track drill walk to infinity.

[0035] In this embodiment, as shown in the figure, Figure 5 The connecting taper pin 14 between the pontoon guide rails is a taper pin + bolt structure. The taper pin cylindrical part bears the radial force applied between the adjacent guide rails. The conical part serves as an installation guide. The washer 15 is sleeved on the outside of the cone, so that the nut 16 can transmit the locking force to the guide rail end plate, and the adjacent guide rails are pressed tightly, so that each guide rail can share the drill pressure.

Claims

1. A pontoon type guide rail, which is composed of a middle rail beam (4), two side mechanical leg bearing beams (5) and (6) and a connecting taper pin (14), all parts of said guide rail are designed as a complete module, characterized in that, The whole guide rail is a steel frame structure, and has a floating pontoon type full-enclosed shape; the buoyancy formed by the internal cavity of the guide rail in the mud is greater than the weight of the guide rail itself; the internal cavity is used as a steam passage; the whole guide rail has a shuttle type symmetrical structure; in a guide rail chain formed by multiple guide rails, any guide rail can be replaced with each other; and the guide rails are connected through connecting taper pins (14).

2. A pontoon guide track according to claim 1, characterised in that The intermediate rail beam (4) has crane rails (10) on the upper surface and H steel beams (11) on the lower surface, and circular holes are uniformly distributed on the web of the H steel beam and used as track drill walker bearing holes (12).

3. A pontoon guide track according to claim 1, characterized in that The connecting taper pin (14) between the guide rails is a taper pin + bolt structure, the taper pin includes a cylindrical part and a conical part, the cylindrical part of the taper pin bears the radial force applied by the adjacent guide rails to each other, the conical part plays a mounting and guiding role, and a grommet is sleeved on the outside of the conical part, so that the locking force can be transmitted to the end plate of the guide rail by the nut.

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