Drilling tool lifting platform device for oil field

Abstract

The utility model relates to the technical field of oil field drilling tool equipment, and discloses an oil field drilling tool lifting platform device which comprises a supporting frame, a first winch is installed on the top of the supporting frame, a first steel wire rope is arranged on the first winch, and a supporting rod portion of the supporting frame is connected with a lifting platform in a sliding mode. A first steel wire rope is arranged on the supporting frame, a drilling tool is connected to the lower end of the lifting platform, a first pulley is connected to the upper end of the lifting platform, and a safety lock catch mechanism used for emergency braking after the first steel wire rope is broken is connected between the lifting platform and the supporting frame. When the first steel wire rope breaks, the safety lock catch mechanism loses traction force, at the moment, the spring drives the lock catch block to pop out in time, the lock catch block and the rack can be driven to be buckled and locked, the safety performance is improved, an independent traction mechanism is arranged, the lifting platform can be pulled downwards, and the drilling pressure is increased.

Description

Technical Field

[0001] This utility model relates to the field of oilfield drilling equipment technology, specifically to a drilling tool lifting and lowering platform device for oilfields. Background Technology

[0002] Oilfield drilling tool lifting platforms are one of the key pieces of equipment in oil drilling operations. Their main function is to safely and smoothly lift or lower heavy tubing such as drill strings and casing during drilling, tripping, and changing drill tools. Drill tool lifting and lowering operations are carried out throughout the entire drilling cycle and are frequent and repetitive, so the reliability and safety of the equipment are of paramount importance.

[0003] In existing oilfield drilling tool lifting platforms, during long-term, high-load, and frequent lifting and lowering operations, the steel wire rope, as the core load-bearing component, will gradually age due to factors such as fatigue, wear, and corrosion. Once the steel wire rope breaks, the lifting platform and the drilling tools it carries will fall rapidly under the action of gravity. This "free fall" type of crash will cause catastrophic consequences. Drill tool damage: drill pipes, drill collars, etc. may be bent, have damaged threads, or break. Equipment damage: the lifting platform body and derrick structure may be deformed or damaged by severe impact, which may lead to major safety and production accidents such as wellhead facility damage and personnel casualties.

[0004] In existing technologies, there is no timely locking mechanism when the wire rope breaks, making it impossible to lock the lifting platform when it falls. Furthermore, during the drilling process, if the drill bit encounters hard strata, the resistance to drilling downwards increases, and the drilling pressure is insufficient to overcome the resistance and continue drilling. Based on the above defects, we need to propose a drilling tool lifting platform device for oil fields. Utility Model Content

[0005] The purpose of this invention is to provide a drilling tool lifting and lowering platform device for oil fields to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an oilfield drilling tool lifting platform device, including a support frame, a first winch installed on the top of the support frame, a first wire rope on the first winch, a lifting platform slidably connected to the support rod of the support frame, a drilling tool connected to the lower end of the lifting platform, a first pulley connected to the upper end of the lifting platform, a safety locking mechanism for emergency braking in case of breakage of the first wire rope connected between the lifting platform and the support frame, the first wire rope being connected to the first pulley and the safety locking mechanism respectively, and a traction mechanism for pressurized descent of the lifting platform connected to the support frame, the traction end of the traction mechanism being connected to the lifting platform.

[0007] Preferably, the safety locking mechanism includes a support base fixed on the lifting platform and a rack fixed on the support frame. A sleeve hole is provided on one side of the lifting platform, and the lifting platform is sleeved on the rack through the sleeve hole. The rack has tooth grooves along the straight direction on its side.

[0008] Preferably, the inner side of the support base is provided with a sliding groove, and a spring and a locking block are slidably connected inside the sliding groove. One side of the locking block is provided with a toothed protrusion for engaging with the toothed groove.

[0009] Preferably, a pull pin is fixed on the other side of the locking block, one end of the pull pin passes through the spring and slides through the support seat, and one end of the pull pin is integrally forged into a pull ring, and the first steel wire rope is connected to the pull ring.

[0010] Preferably, the slide groove adopts a convex groove structure, the inside of the support base forms a raised step, and the locking block is supported on the raised step.

[0011] Preferably, the traction mechanism includes a second winch installed on the top of the support frame, a second wire rope being provided on the second winch, a second pulley being connected to the upper end of the support frame, a third pulley being connected to the lower end of the support frame, a hanging ring being fixed on one side of the lifting platform, the second wire rope being engaged in the slide rails of the second and third pulleys, and the second wire rope being fixed to the hanging ring.

[0012] Preferably, the lifting platform has mounting holes at its four corners, and bushings are embedded and fixed inside the mounting holes. The lifting platform is connected to the support rod of the support frame through the bushings.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention employs a first steel wire rope connected to a first pulley and a safety locking mechanism. When the first steel wire rope breaks, the safety locking mechanism loses its traction. At this time, a spring causes the locking block to pop out in time, which can engage and lock the locking block with the rack. The lifting platform can be positioned and will not continue to fall downwards. The drilling tools will not be damaged due to the breakage of the first steel wire rope, thus improving safety performance. Furthermore, an independent traction mechanism is set up to pull the lifting platform downwards. During drilling, additional pressure can be applied downwards to increase the drilling pressure, which is sufficient to overcome the resistance when encountering hard layers. Attached Figure Description

[0015] Figure 1 This is a first schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a second schematic diagram of the overall structure of this utility model;

[0017] Figure 3 This is a third schematic diagram of the overall structure of this utility model;

[0018] Figure 4 This is a schematic cross-sectional view of the overall structure of this utility model;

[0019] Figure 5 For the present utility model Figure 4 Enlarged diagram of point A in the middle.

[0020] In the diagram: 1. Support frame; 2. First winch; 200. First wire rope; 3. Lifting platform; 4. First pulley; 5. Support base; 6. Locking block; 7. Spring; 8. Pull pin; 9. Pull ring; 10. Rack; 11. Gear groove; 50. Raised step; 12. Second winch; 1200. Second wire rope; 13. Second pulley; 14. Third pulley; 15. Hanging ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-5 This utility model provides a technical solution: an oilfield drilling tool lifting platform device, including a support frame 1, a first winch 2 installed on the top of the support frame 1, a first wire rope 200 provided on the first winch 2, a lifting platform 3 slidably connected to the support rod of the support frame 1, a drilling tool connected to the lower end of the lifting platform 3, a first pulley 4 connected to the upper end of the lifting platform 3, a safety locking mechanism for emergency braking after the first wire rope 200 breaks connected between the lifting platform 3 and the support frame 1, the first wire rope 200 being connected to the first pulley 4 and the safety locking mechanism respectively, and a traction mechanism for pressurizing and lowering the lifting platform 3 connected to the support frame 1, the traction end of the traction mechanism being connected to the lifting platform 3;

[0023] In use, the first winch 2 extends the first wire rope 200 downward, which can drive the lifting platform 3 to descend and drive the drilling tool to descend for drilling. The first winch 2 winds up the first wire rope 200, which can drive the lifting platform 3 to rise. During the rising process, the safety locking mechanism is pulled by the first wire rope 200 and is not connected to the rack 10.

[0024] If the first wire rope 200 breaks;

[0025] Specifically, the safety locking mechanism includes a support base 5 fixed on the lifting platform 3 and a rack 10 fixed on the support frame 1. A sleeve hole is provided on one side of the lifting platform 3, and the lifting platform 3 is sleeved on the rack 10 through the sleeve hole. A tooth groove 11 is provided on the side of the rack 10 along the straight direction. A sliding groove is provided on the inner side of the support base 5. A spring 7 and a locking block 6 are slidably connected inside the sliding groove. A tooth protrusion for engaging with the tooth groove 11 is provided on one side of the locking block 6.

[0026] Furthermore, a pull pin 8 is fixed on the other side of the locking block 6. One end of the pull pin 8 passes through the spring 7 and slides through the support seat 5. One end of the pull pin 8 is integrally forged into a pull ring 9. The first steel wire rope 200 is connected to the pull ring 9.

[0027] When the first wire rope 200 breaks, the pull ring 9 and the pull pin 8 lose traction, the spring 7 will spring up and reset, which can drive the locking block 6 to pop out. The toothed protrusion of the locking block 6 can engage with the tooth groove 11 of the rack 10 to achieve automatic locking and positioning when falling, avoiding the danger of the lifting platform 3 and the drilling tool falling, and preventing further damage.

[0028] The pull ring 9 is pulled by the first wire rope 200, and the spring 7 bears the weight of the entire lifting platform 3 and the drill bit. As long as the first wire rope 200 does not break, the spring 7 will always be in a compressed state and will not pop out.

[0029] Furthermore, the chute adopts a convex groove structure, and a raised step 50 is formed inside the support base 5. The locking block 6 is supported on the raised step 50. When the locking block 6 is pulled, it fits against the raised step 50 for support, and the support is stable.

[0030] When the drill bit is drilling downwards and pressurized, specifically, the traction mechanism includes a second winch 12 installed on the top of the support frame 1, a second wire rope 1200 installed on the second winch 12, a second pulley 13 connected to the upper end of the support frame 1, a third pulley 14 connected to the lower end of the support frame 1, a hanging ring 15 fixed on one side of the lifting platform 3, and the second wire rope 1200 is engaged in the slide of the second pulley 13 and the third pulley 14, and the second wire rope 1200 is fixed to the hanging ring 15;

[0031] In use, the second wire rope 1200 is wound up by the second winch 12, which can guide the second wire rope 1200 to slide in the slide of the second pulley 13 and the third pulley 14 for winding. The hanging ring 15 can be pulled down, and the lifting platform 3 can be pulled down, increasing the downward traction force. The drill bit can be pressurized to drill down, which is enough to overcome the resistance to drill down when encountering hard layers.

[0032] Furthermore, mounting holes are provided at the four corners of the lifting platform 3, and bushings are embedded and fixed inside the mounting holes. The lifting platform 3 is connected to the support rod of the support frame 1 through the bushings. The lifting platform 3 can slide up and down on the surface of the support rod, which can be guided and positioned. The bushing structure is provided to make the lifting platform 3 more wear-resistant when sliding up and down.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rig lift apparatus for use in oil fields, comprising a support frame (1), characterised in that: The top of the support frame (1) is provided with a first hoist (2), the first hoist (2) is provided with a first steel wire rope (200), the support rod of the support frame (1) is slidably connected with a lifting platform (3), the lower end of the lifting platform (3) is connected with a drilling tool, the upper end of the lifting platform (3) is connected with a first pulley (4), the lifting platform (3) and the support frame (1) are connected with a safety lock mechanism for emergency braking after the first steel wire rope (200) is broken, the first steel wire rope (200) is connected with the first pulley (4) and the safety lock mechanism respectively, the support frame (1) is connected with a traction mechanism for pressurized descent of the lifting platform (3), and the traction end of the traction mechanism is connected with the lifting platform (3).

2. The oilfield drill rig landing platform apparatus of claim 1, wherein: The safety lock mechanism comprises a support seat (5) fixed on the lifting platform (3) and a rack (10) fixed on the support frame (1), one side of the lifting platform (3) is provided with a sleeving hole, the lifting platform (3) is sleeved on the rack (10) through the sleeving hole, and the rack (10) is provided with a gear slot (11) in a straight line direction along one side.

3. The oilfield drill rig landing platform apparatus of claim 2, wherein: The inner side of the support seat (5) is provided with a sliding groove, the sliding groove is slidably connected with a spring (7) and a lock block (6), and one side of the lock block (6) is provided with a toothed protrusion for matched connection with the gear slot (11).

4. The oilfield drill rig landing platform apparatus of claim 3, wherein: The other side of the lock block (6) is fixedly provided with a pull pin (8), one end of the pull pin (8) penetrates through the spring (7) and slidably penetrates through the support seat (5), one end of the pull pin (8) is integrally forged into a pull ring (9), and the first steel wire rope (200) is connected with the pull ring (9).

5. The oilfield drill rig landing platform apparatus of claim 3, wherein: The sliding groove adopts a convex groove structure, the inner side of the support seat (5) is formed with a convex step (50), and the lock block (6) is supported on the convex step (50).

6. The oilfield drill rig landing platform apparatus of claim 1, wherein: The traction mechanism comprises a second hoist (12) mounted on the top of the support frame (1), the second hoist (12) is provided with a second steel wire rope (1200), the upper end of the support frame (1) is connected with a second pulley (13), the lower end of the support frame (1) is connected with a third pulley (14), one side of the lifting platform (3) is fixedly provided with a hanging ring (15), the second steel wire rope (1200) is clamped in the slide way of the second pulley (13) and the third pulley (14), and the second steel wire rope (1200) is fixedly connected with the hanging ring (15).

7. The oilfield drill rig landing platform apparatus of claim 1, wherein: Mounting holes are formed at four corners of the lifting platform (3), bushings are embedded and fixed in the mounting holes, and the lifting platform (3) is sleeved on the support rod of the support frame (1) through the bushings.

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