CN215369741U - Power platform for minor and major workover of oil field - Google Patents

Abstract

The utility model relates to the field of oilfield maintenance operation equipment, in particular to an oilfield small overhaul and major overhaul power platform. The equipment can be used for finishing minor repair work and can also be used for finishing major repair work with high difficulty. The wellhead operation platform comprises a wellhead operation platform with supporting legs, and a hydraulic rotary table is installed in the middle of the wellhead operation platform. The hydraulic rotary table consists of two parts, namely a wellhead operation platform and a hydraulic rotary table. The product can be used for completing minor repair operations, such as simple junk underground fishing, underground tools, sand washing and other simple repair and maintenance operations, and can also be used for completing major repair operations, such as complex fishing operation, unfreezing operation, back-off operation and the like, and the hydraulic rotary table is arranged. When the fault occurs, the product and the corresponding matched tool for removing the fault are installed in time, and the operation can be started immediately. Therefore, from the occurrence of the fault to the start of fault treatment, the continuity is achieved in time, the maintenance period is shortened, and the aims of reducing cost, improving efficiency and improving the benefit of the oil field are achieved.

Description

Power platform for minor and major workover of oil field

Technical Field

The utility model relates to the field of oilfield maintenance operation equipment, in particular to an oilfield small overhaul and major overhaul power platform. The equipment can be used for finishing minor repair work and can also be used for finishing major repair work with high difficulty.

Background

In the prior art, different tools are used for minor repair work and major repair work of an oil field, and minor repair work equipment comprises a crawler tractor hoist, a wheel tractor hoist and the like. The major workover operations generally use large workover vehicles. When the situation occurs on the spot, the minor repair operation equipment is generally used for processing, if the minor repair operation equipment cannot complete the maintenance operation, the minor repair operation equipment needs to be removed, and then the major repair maintenance equipment is called for maintenance.

The minor repair operation equipment generally performs simple underground repair and maintenance work. The small repair operation equipment does not have a derrick, the derrick needs to be erected, a large rope needs to be threaded and the like before operation, the auxiliary workload is large before and after operation, and the oil field benefit is influenced. The workover operations are not completed when they encounter complex downhole failures. The condition of underground falling objects caused by various reasons is complex, and the fishing complex condition is generally finished by handing over to overhaul operation equipment. The major repair operation equipment has high maintenance difficulty and high requirement on the equipment, so the construction cost is higher, and if the equipment fails, the maintenance cost is relatively higher. The overhaul equipment is required to be called at times when the overhaul equipment is used, and part of the time is consumed in driving, so that the overhaul equipment is also wasted, is not economic and affects the economic benefit.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a power platform for minor overhaul and major overhaul of an oil field, which can be used after being moved and can improve the working efficiency.

The technical solution of the utility model is as follows: the power platform for minor overhaul and major overhaul of the oil field is characterized by comprising a wellhead operation platform with supporting legs, and a hydraulic turntable is installed in the middle of the wellhead operation platform.

In the above-mentioned scheme, the first step of the method,

the supporting legs are four telescopic legs acted by a hydraulic cylinder.

One side of the wellhead operation platform is provided with an opening for pushing the hydraulic turntable, and the opening is provided with a cover plate.

The hydraulic rotary disc comprises a hydraulic motor, a gear reducer and a rotating body which are connected in sequence, the rotating body is provided with a brake, and the rotating body is arranged between the upper shell and the lower main body.

The bottom end of each supporting leg is provided with a sizing block plate fixed by a ground anchor.

The utility model has the advantages that: the hydraulic rotary table consists of two parts, namely a wellhead operation platform (a well repairing platform) and a hydraulic rotary table. The product can be used for finishing minor repair operations (such as simple salvage of simple falling objects, underground tools, sand washing and other simple repair and maintenance operations) and also finishing major repair operations (such as complex salvage operations, unfreezing operations, back-off operations and the like, and a hydraulic turntable is arranged). When the fault occurs, the product and the corresponding matched tool for removing the fault are installed in time, and the operation can be started immediately. Therefore, from the occurrence of the fault to the start of fault treatment, the continuity is achieved in time, the maintenance period is shortened, and the purposes of reducing cost, improving efficiency and improving the benefit of the oil field are achieved.

Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic diagram of the present invention.

Fig. 2 is a schematic top view of fig. 1.

Fig. 3 is a schematic view of a hydraulic rotary table.

Fig. 4 is a horizontal sectional view of the hydraulic rotary table, and the structure of the open state of the locking pawl is simplified.

Fig. 5 is a horizontal sectional view of the hydraulic rotary table showing a closed-state structural diagram of the latch claw.

Detailed Description

Referring to fig. 1-5, the part names are as follows: the hydraulic control device comprises a turntable cover 1, a shifting seat 2, a brake piston 3, a spacer 4, a shifting gear 5, a shifting fork 6, a shifting handle 7, a connecting plate 8, a lower main body 9, a driven wheel 10, an oil drain plug 11, a dual-gear 12, a small shaft 13, a brake seat 14, a torsion spring 15, a locking pawl 18, a cover plate 19, a shifting fork shaft 20, a square bushing 21, a rotating body 22, a driving gear 23, a key 24, a bearing cover 25, a pad 26, a spline shaft 27, a blank cover 28, an upper shell 29, a hydraulic motor 30, a supporting leg 31, a wellhead operation platform 32, a cover plate 33, a ground anchor 34, a pad iron plate 35, a hydraulic cylinder 36, a guardrail 37, a wellhead blowout preventer 38, a climbing ladder 39, a four-leg hydraulic control valve 40, a turntable braking control valve 41, a turntable walking control valve 42, a limit point 43 and a gear reducer 44.

Referring to fig. 1, the power platform for minor overhaul and major overhaul of the oil field comprises a wellhead operation platform 32 with supporting legs 31, and a hydraulic turntable 5 is installed in the middle of the wellhead operation platform 32. The support legs 31 are four telescopic legs acted upon by hydraulic cylinders 36. The bottom end of each support leg 31 carries a sizing block plate 35 secured by an earth anchor 34. The platform is installed at the wellhead needing maintenance, hydraulic cylinders 36 are installed in the platform supporting legs 31, and the lifting of the hydraulic cylinders 36 is controlled by a four-leg hydraulic control valve 40 (see figure 2), so that the level of the platform is adjusted. The pad iron plate 35 of the platform is made of strip steel, and plays a role in preventing sinking in muddy ground environment. The ground anchor 34 acts as a fixation for the platform as a whole and prevents the platform from rotating as a whole when the torque of the device is too large. The climbing ladder 39 is a walking path for the operator. The wellhead work platform 32 is at a certain height from the ground so it is protected by a guardrail 37. Wellhead blowout preventer 38 is equipment already installed on the wellhead.

Referring to fig. 2, a notch for pushing the hydraulic rotary table 5 is arranged on one side of the wellhead operation platform 32, and the notch is provided with a cover plate 33.

Referring to fig. 3, the hydraulic rotary table 5 includes a hydraulic motor 30, a gear reducer 44, and a rotor 22 connected in sequence, the rotor 22 is provided with a brake, and the rotor 22 is disposed between the upper casing 29 and the lower body 9. The hydraulic dial 5 has a gear reducer 44 (transmission). The hydraulic motor 30 has spaced gear shifting gears 5 and driving gears 23 on the output shaft, the driving gears 23 have internal teeth for the gear shifting gears 5 to move and insert into engagement, and the gear shifting gears 5 are connected with the shifting forks 6. The output shaft of the hydraulic motor 30 is in transmission connection with the rotating body 22 through the driving gear 23, the dual wheel 12 and the driven wheel 10. When the gear shifting handle 7 is rotated clockwise, the gear shifting handle 7 drives the shifting fork shaft 20 to rotate, the shifting fork 6 and the shifting fork shaft 20 are in transmission in a spiral mode, the shifting fork 6 moves upwards, and the shifting fork 6 pushes the gear shifting gear 5 to be completely meshed with the internal gear of the driving gear 23. When the shift lever 7 is rotated counterclockwise, the shift gear 5 is disengaged from the internal gear of the driving gear 23. Thereby realizing the speed change when the hydraulic rotary disk 5 operates.

Referring to fig. 3, 4 and 5, the hydraulic rotary disc 5 has a manual brake device, and the opening and closing of the brake device consisting of the brake piston 3 and the stop pawl 18 which are arranged on the brake seat 14 are controlled by a rotary disc brake control valve 41 (see fig. 2). The closed position of the pawl 18 on the control valve opening brake catches the teeth on the driven wheel 10 to effect mechanical braking. The latch 18 of the control valve closing brake is in an open state and the driven wheel 10 can rotate freely.

The installation sequence is as follows:

firstly, assembling a platform. Four parallels 35 with anchor block 34 are fixed, and support legs 31 with hydraulic cylinder 36, frame, climbing ladder 39, guardrail 37 and so on are installed. The hydraulic cylinder 36 and the four-leg hydraulic control valve 40 are connected by oil pipes, and the level of the wellhead operation platform 32 is adjusted after the installation is completed.

And secondly, installing a hydraulic turntable 5. The hydraulic rotary table 5 is pushed into the wellhead operation platform 32 from the notch of the wellhead operation platform 32. The lower part of the hydraulic rotary table 5 is connected with a wellhead blowout preventer 38 by bolts. The hydraulic rotary table 5 and the rotary table brake control valve 41, the hydraulic motor 30 and the rotary table travel control valve 42 are connected by oil pipes. Then cover the cover plate 33 at the opening to prevent the person from stepping on the ground.

The working principle is as follows: referring to fig. 2 and 3, after the hydraulic rotary table 5 is installed and fixed, a maintenance tool is put into the well from the inner cylinder of the rotating body 22, and when the final drill rod reaches a preset position, the last drill rod is fixed by the square bushing 21. The hydraulic motor 30 is started to rotate in the forward or reverse direction by operating the dial travel control valve 42. When the hydraulic motor 30 rotates forwards, the maintenance tool rotates forwards underground to perform maintenance operations such as drilling and the like; when the device is reversed, maintenance work such as reversing is performed underground. The rotation of the hydraulic motor 30 drives the gear shifting gear 5 and the driving gear 23 to rotate through the spline shaft 27, the gear shifting gear 5 and the driving gear 23 are in gear engagement with the dual wheel 12, the dual wheel 12 is in gear engagement with the driven wheel 10, the driven wheel 10 transmits power to the rotating body 22 through the key 24 to rotate the rotating body, and at the moment, the brake piston 3, the small shaft 13 and the locking claw 18 on the brake seat 14 controlled by the turntable brake control valve 41 are in an open state. The rotor 22 drives a series of downhole tools such as square drill pipe fixed by the square bushing 21 to start downhole maintenance operation.

When carrying out maintenance operation, because the trouble is complicated in the pit, when carrying out operations such as drilling, the instrument has very big effort, and also can produce very big reaction and act on hydraulic pressure carousel 5, when hydraulic pressure carousel 5 bears the reaction and reaches the limit, will lead to the carousel to rotate. When the hydraulic rotating disc 5 rotates, the opening on the platform can limit the rotating disc. The occurrence of accidents is avoided.

The foregoing description is only exemplary of the utility model and is not intended to limit the spirit of the utility model.

Claims (4)

1. The power platform for minor overhaul and major overhaul of the oil field is characterized by comprising a wellhead operation platform (32) with supporting legs (31), wherein a hydraulic turntable (5) is arranged in the middle of the wellhead operation platform (32); one side of the wellhead operation platform (32) is provided with an opening for the hydraulic turntable (5) to push in, and the opening is provided with a cover plate (33).

2. The power platform for minor and major workover of oil field according to claim 1, characterized in that the supporting legs (31) are four telescopic legs acted by hydraulic cylinders (36).

3. The oilfield small and large workover power platform according to claim 1 or 2, wherein the hydraulic rotary table (5) comprises a hydraulic motor (30), a gear reducer (44) and a rotating body (22) which are connected in sequence, the rotating body (22) is provided with a brake, and the rotating body (22) is arranged between the upper shell (29) and the lower main body (9).

4. The power platform for minor and major workover treatment of oil field according to claim 2, wherein the bottom end of each supporting leg (31) is provided with a pad plate (35) fixed by an earth anchor (34).

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