CN219220304U - Workover mast with foldable wellhead operating platform - Google Patents

Abstract

The utility model relates to a workover rig with a folding wellhead operation platform, which comprises a workover rig truss structure formed by four supporting legs, pulley blocks, steel wire ropes and a big hook, wherein the supporting legs of the workover rig truss structure, which are close to the wellhead side, are fixedly connected with the wellhead operation platform, the wellhead operation platform comprises a near-end supporting leg, a far-end supporting leg and an operation platform, the near-end supporting leg is fixedly connected with the wellhead side supporting leg of the workover rig truss structure through connecting blocks, four pairs of lug plates are arranged on two sides of the operation platform, the near-end supporting leg and the far-end supporting leg are hinged with the lug plates to form the folding operation platform structure attached to the workover rig, and an opening type process space for avoiding the wellhead production tree is arranged in the middle of the operation platform corresponding to the wellhead position. The beneficial effects are that: the operation platform is not required to be lifted and transported independently, the original derrick car is utilized for transportation, and the transport capacity and crane equipment are saved; the folding operation platform is safe in installation and folding processes, and time and labor are saved; the traditional process of lifting and installing the independent operation platform is omitted.

Description

Workover mast with foldable wellhead operating platform

technical field

The utility model belongs to the field of oil production construction operations in oil fields, in particular to a well workover frame equipped with a foldable well head operating platform.

Background technique

Drilling rig is a major equipment used in oilfield workover operations, mainly composed of workover frame and power mechanism. The power mechanism is generally placed on a hydraulic lift truck. The workover frame is a truss structure with a height of more than 20 meters. The bottom of the workover frame is hinged to the chassis support on the ground to adjust the position of the workover frame and the wellhead. There is a working fence on the top of the workover frame, and a pulley block on the top. The pulley block runs through the wire rope. One end of the wire rope is connected to the hook, and the other end of the wire rope is wound on the winch connected to the power machine. By controlling the forward and reverse rotation of the winch, the wire rope pulls the hook to reciprocate up and down. Complete the lifting and lowering of the tubing and sucker rods in the oil well. The workover frame is installed on the side of the wellhead during work, and is fixed around it with the top guy rope. Generally, it is inclined to the wellhead at an angle of about 85° with the ground, so that the big hook of the workover frame is aligned with the center of the wellhead. The purpose is to reduce the lifting of the oil pipe or Lateral force during oil rod. During workover operations, an operating platform needs to be built around the wellhead to provide workers with a construction space. The operating platform is composed of steel structures, which are very heavy and difficult to hoist and lift. During the workover operation when moving away from the site, the well drilling machine is transported to the next wellsite by hydraulic lifting truck, the workover frame is placed on the wellhead, and the operating platform is hoisted near the wellhead by a lifting crane, and then the on-site operator It is installed directly above the wellhead after being hoisted by the hook of the workover frame winch. Since the hook of the workover derrick is directly above the wellhead, there is a Christmas tree at the wellhead, and the operation platform is placed on the side of the wellhead, and it is lifted obliquely when lifting. Several workers are required to pull the operation platform with swaying ropes to prevent it from colliding with the workover derrick or The Christmas tree at the wellhead is time-consuming and labor-intensive to operate, and there are also potential safety hazards. In oil production and workover operations, it is urgent to develop a foldable operating platform attached to the workover stand. Not only can it reduce transportation costs, but it also simplifies the installation and storage procedures of the operating platform, making on-site operations time-saving, labor-saving and safer.

Utility model content

The utility model aims to overcome the deficiencies in the prior art, and provides a workover frame equipped with a foldable wellhead operation platform, which is installed on the workover frame and becomes an integral accessory of the workover frame, which simplifies the installation and storage procedures of the operation platform , so that the on-site operation saves time and effort and is safer.

In order to achieve the above object, the utility model is realized through the following technical solutions, a workover frame equipped with a foldable wellhead operation platform, including a workover frame truss structure composed of four legs, a pulley block, a steel wire rope, and a hook, and a workover frame truss structure The wellhead operation platform is fixedly connected to the legs near the wellhead side. The wellhead operation platform includes a proximal leg, a distal leg and an operation platform. The proximal leg is connected to the wellhead side of the workover truss structure through the connecting block The outriggers are fixed, and there are four pairs of ear plates on both sides of the operation platform. The proximal and distal outriggers are hinged to the ear plates to form a foldable operation platform structure attached to the workover frame. The middle of the operation platform corresponds to the wellhead The location is equipped with an open process space avoiding the wellhead Christmas tree.

Further, several pin holes are evenly distributed along the longitudinal direction of the proximal support leg, which are used to adjust the height of the operation platform, and the connection block is provided with an angle with the fixed connection side of the workover frame support leg, so as to ensure that the fixed proximal support The leg axis is perpendicular to the ground.

Furthermore, several pin holes are evenly distributed along the longitudinal direction of the distal support leg for adjusting the height of the operating platform, and the bottom of the distal support leg is fixedly connected with a support base plate.

Further, the shape of the operation platform is a steel frame structure, the operation platform is paved with steel mesh, the side frames of the operation platform are respectively hinged with the auxiliary operation platform through hinges, and the auxiliary operation platform is covered with steel mesh.

Further, a fence socket is provided around the side frame of the auxiliary operation platform, and the auxiliary operation platform is plugged into the fence of the operation platform through the fence socket.

Further, the open process space on the operation platform is paved with two semicircular steel grids, the formed circular structure is aligned with the wellhead, and the steel grid is paved on the opening of the operation platform folding door.

Further, a steel structure ladder is overlapped on the operating platform.

Beneficial effects: Compared with the prior art, the foldable operation platform attached to the workover derrick is easy and convenient to transport, without the need for separate lifting, transportation, and operation of the platform, and the original derrick truck is used for transportation, saving transportation capacity and crane equipment; the folded operation platform is installed and put away The process is safe, time-saving and labor-saving; after the workover derrick is installed at the wellhead, use the workover derrick winch to level the operation platform, install the fence and ladder and adjust the height to start working, eliminating the need for a separate operation platform lifting and installation process, saving manpower , safe operation. The fence adopts the plug-in method, and the ladder adopts the lap-joint method, which is easy to install and disassemble. Remove the fence and ladder when stowing, and use the derrick winch to fold the operation platform to fit the derrick, easy to operate; the height adjustment range is large, easy to operate; the pin shaft is installed on the difference between the proximal leg and the distal leg The height of the operating platform can be adjusted in the hole, and the range can reach 2 meters, which can adapt to most oil wells in the oil field; the structure is simple and the cost is low. The foldable structure of one main operation platform and two auxiliary operation platforms can not only meet the transportation width requirements, but also increase the area of the operation platform, which is convenient for wellhead operations. The height adjustment can be completed with the big hook of the workover mast itself, without other hydraulic pressure or lead screw mechanism, the structure is simple and the cost is low.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the top view of Fig. 1;

Figure 3 is a schematic structural view of the open process space in the middle of the operating platform;

Fig. 4 is a side view of the folded state;

Fig. 5 is a schematic diagram of the working state of the existing well drilling machine.

In the figure: 1. Workover truss structure, 1-1, outrigger, 1-2, pulley block, 1-3, wire rope, 1-4, hook, 2, wellhead operation platform, 2-1, proximal outrigger , 2-2, remote outrigger, 2-3, operating platform, 2-4, auxiliary operating platform, 3, connection block, 4, lug plate, 5, Christmas tree, 6, open process space, 7, pin Hole, 8, support base plate, 9, steel mesh, 10, hinge, 11, fence socket, 12, fence, 13, semicircular steel grid, 14, folding small door, 15, climbing ladder.

Detailed ways

Below in conjunction with the preferred embodiments, the specific implementation methods provided according to the utility model are described in detail as follows: see the accompanying drawings for details, this embodiment provides a workover stand equipped with a foldable wellhead operating platform, including four legs 1 -1. Workover gantry truss structure 1 composed of pulley blocks 1-2, wire ropes 1-3, and hooks 1-4. The wellhead operation platform 2 is fixedly connected to the legs of the workover truss truss structure near the wellhead side, and the wellhead operation platform It includes a proximal support leg 2-1, a distal support leg 2-2 and an operation platform 2-3, the proximal support leg is affixed to the wellhead side support leg of the workover truss structure through the connection block 3, and the operation platform There are four pairs of lugs 4 on both sides, and the proximal leg and the distal leg are hinged to the lugs to form a foldable operating platform structure attached to the workover frame. In the middle of the operating platform, there is an avoidance wellhead Christmas tree 5 at the position corresponding to the wellhead. The open craft space6.

The preferred solution of this embodiment is that the near-end support leg has several pin holes 7 evenly distributed along its longitudinal direction, which are used to adjust the relative height of the operation platform and the workover platform. There is an angle to ensure that the axis of the fixed proximal leg is perpendicular to the ground. In this embodiment, the angle between the fixed side of the outrigger leg of the workover frame and the horizontal line is 85°.

The preferred solution of this embodiment is that the distal leg has several pin holes evenly distributed along its longitudinal direction, which are used to adjust the height of the operation platform, so as to meet the environmental conditions of the uneven ground in the construction environment of the workover platform. A support base plate 8 is fixedly connected to the bottom of the distal leg.

The preferred solution of this embodiment is that the shape of the operating platform is a steel frame structure, and the expanded steel mesh 9 is paved on the operating platform, and the frames on both sides of the operating platform are respectively hinged with the auxiliary operating platform 2-4 through hinges 10, and the auxiliary operating platform Paving steel mesh.

The preferred solution of this embodiment is that a fence socket 11 is provided around the side frame of the auxiliary operation platform, and the auxiliary operation platform is plugged into the fence 12 of the operation platform through the fence socket.

The preferred solution of this embodiment is that the open process space on the operation platform is paved with two semicircular steel grids 13, and the formed full circle structure is aligned with the wellhead and is located at the opening of the operation platform. Adopt the folding wicket 14 of paving or hinge connection steel grid on the top. Present embodiment folding wicket adopts pavement.

The preferred solution of this embodiment is that the ladder 15 of the steel structure is overlapped on the operation platform.

working principle

1. Installation process

1. Install the workover frame on the side of the wellhead according to the operating specifications, and determine the height of the operating platform according to the actual situation at the wellhead;

2. Hoist the operation platform with the hook of the winch, adjust the height of the operation platform to a suitable height, and insert the pin shaft of the proximal outrigger;

3. Use a large hook to hang the far end of the operating platform and lower it slowly. The legs at the far end will naturally sag and be perpendicular to the ground. Adjust the relative height between the legs at the far end and the operating platform, and insert the hinge pin into the pin hole to keep the operating platform on the ground. Parallel, since the two near-end outriggers are fixed on the derrick and hinged with the operation platform, in the working state, the operation platform is kept parallel to the ground, and the other side of the operation platform is hinged with the two far-end outriggers, through the two far-end outriggers The outriggers rest on the ground.

4. Fences are inserted around the operating platform to prevent operators from falling; the ladder is the channel for the staff to operate the platform up and down;

5. Close the steel grid folding door at the opening of the operation platform, install the semi-circular steel grid to surround the Christmas tree, and the installation of the operation platform is completed.

Explanation: Attached Figure 1 uses screenshots to draw the truss structure of the workover rig, because the hook of the drawworks along its centerline must coincide with the centerline of the wellhead, and the workover derrick is at an angle of 85° relative to the ground.

2. Working process

The height of the operation platform is appropriate, and the workover operation can be carried out after the accessories are installed.

3. Putting away the process

1. Remove the fence, semicircular steel grid and ladder;

2. Use the workover derrick winch to lift the far end of the operation platform, and the operation platform rotates around the pin shaft of the near-end outrigger until it fits the workover derrick;

3. Fold the two auxiliary operating platforms and fit them on the side of the workover mast, and the outriggers at the far end will hang down naturally. After completing the retracting process, the entire operation platform and the workover mast are folded together, and then can be transported by the derrick truck.

4. The setting of the open process space is to prevent the operation platform from interfering with the wellhead related equipment during the folding process of the operation platform. The folding door of the hinged steel grid of the operating platform can be folded until it fits the operating platform. At this time, the operating platform presents a U-shaped opening structure to ensure the smooth folding of the operating platform.

The above-mentioned detailed description of a workover frame with a folding wellhead operating platform with reference to the embodiments is illustrative rather than limiting, and several embodiments can be listed according to the limited scope, so without departing from the utility model Changes and modifications under the overall concept should fall within the protection scope of the present utility model.

Claims (7)

1. The utility model provides a take folding well head operation platform's workover rig, includes four landing legs, assembly pulley, wire rope, big hook constitution's workover rig truss structure, characterized by: the well head operation platform is fixedly connected to the support leg of the well head side, the well head operation platform comprises a proximal support leg, a distal support leg and an operation platform, the proximal support leg is fixedly connected with the well head side support leg of the well head truss structure through a connecting block, four pairs of lugs are arranged on two sides of the operation platform, the proximal support leg and the distal support leg are hinged with the lugs to form a folding operation platform structure attached to the well head truss, and an opening type process space for avoiding a wellhead christmas tree is arranged in the middle of the operation platform corresponding to the well head position.

2. The workover rig of claim 1 with a collapsible wellhead operating platform, wherein: the near-end landing leg is longitudinally and uniformly provided with a plurality of pin holes for adjusting the height of the operating platform, and the fixedly connected side of the connecting block and the landing leg of the workover rig is provided with an angle to ensure that the axis of the fixedly connected near-end landing leg is vertical to the ground.

3. The workover rig of claim 1 with a collapsible wellhead operating platform, wherein: the remote supporting leg is longitudinally and uniformly provided with a plurality of pin holes for adjusting the height of the operating platform, and the bottom of the remote supporting leg is fixedly connected with a supporting bottom plate.

4. The workover rig of claim 1 with a collapsible wellhead operating platform, wherein: the operation platform is in a steel structure frame structure, the steel plate net is paved on the operation platform, the side frames on two sides of the operation platform are respectively hinged with the auxiliary operation platform through hinges, and the steel plate net is paved on the auxiliary operation platform.

5. The workover rig of claim 4 with a collapsible wellhead operating platform, wherein: and fence sockets are arranged on the periphery of the side frame of the auxiliary operation platform, and the auxiliary operation platform is inserted into the operation platform fence through the fence sockets.

6. The workover rig of claim 1 with a collapsible wellhead operating platform, wherein: the open-type process space pavement on the operation platform is provided with two semicircular steel grids, the formed full-circle structure is aligned with the wellhead position, and the folding small door of the steel grids is paved on the opening of the operation platform.

7. The workover rig of claim 1 with a collapsible wellhead operating platform, wherein: and the operating platform is lapped with the steel structure cat ladder.

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