Novel double-pipe suspension device

Abstract

The utility model discloses a novel double-pipe suspension device which comprises a suspension device body, two suspension device mandrels are vertically arranged in the suspension device body, and a plurality of locking holes and cambered surface sealing rings are arranged on the peripheral surface of the suspension device body. According to the novel double-pipe suspension device, two hanger mandrels are installed in a limited space, the equipment cost is saved, the utilization rate of the suspension device is improved, and the oil and gas exploitation yield is improved.

Description

Technical Field

[0001] The utility model relates to a novel double - pipe suspension device, belonging to the technical field of oil and gas exploitation devices. Background Art

[0002] The coiled tubing oil and gas exploitation technology is to select a coiled tubing with a smaller inner diameter and lower it into the wellhead oil casing, and use a coiled tubing hanger to suspend the coiled tubing in the wellhead for oil and gas exploitation. The traditional suspension device is a single - well and single - pipe mode. In a wellhead, one suspension device is used, and there is only one hanger mandrel in the suspension device, which cannot give full play to the space efficiency in a limited space and improve the utilization rate of the suspension device. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a novel double - pipe suspension device, which enables two hanger mandrels to be installed in a limited space, saves equipment costs, improves the utilization rate of the suspension device, and increases the oil and gas exploitation output.

[0004] To solve the above - mentioned technical problems, a technical solution adopted by the utility model is: to provide a novel double - pipe suspension device, which includes a hanger body. Two hanger mandrels are vertically arranged in the hanger body, and multiple locking holes and arc - shaped sealing rings are arranged on the outer peripheral surface of the hanger body.

[0005] Preferably, the hanger mandrel is a tube body.

[0006] Preferably, limiting blocks are respectively arranged on the outer peripheral surfaces of the two hanger mandrels, a limiting groove extending up and down is arranged on the hanger body, and the limiting blocks are located in the limiting groove.

[0007] Preferably, the arc - shaped sealing ring is bent into an arc shape and attached to the outer peripheral surface of the hanger body.

[0008] The beneficial effect of the utility model is: the novel double - pipe suspension device of the utility model has two hanger mandrels arranged in the suspension device. Compared with the traditional one hanger mandrel, the utilization rate of the suspension device in a limited space is higher, which can save equipment costs and increase the oil and gas exploitation output. Brief Description of the Drawings

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings, where:

[0010] Figure 1It is a schematic structural diagram of the novel double-tube suspension device of the present utility model. Detailed implementation manners

[0011] The technical solutions in the embodiments of the present utility model will be clearly and completely described below. Apparently, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0012] Embodiments of the present utility model:

[0013] The present utility model provides a novel double-tube suspension device. Please refer to Figure 1 , which includes a hanger body 1. Two hanger mandrels 2 are vertically arranged inside the hanger body 1. A plurality of locking holes 5 and arc-shaped sealing rings 3 are arranged on the outer peripheral surface of the hanger body 1. Locking screws are screwed into the locking holes 5, and the inner ends of the locking screws abut against the hanger mandrels 2 to fix the hanger mandrels 2 and the hanger body 1 together. The arc-shaped sealing ring 3 increases the sealing performance of the connection between the hanger body 1 and the wellhead device.

[0014] Preferably, the hanger mandrel 2 is a hollow tube body, that is, a hollow shaft.

[0015] Preferably, limiting blocks 4 are respectively arranged on the outer peripheral surfaces of the two hanger mandrels 2. A limiting groove 6 extending up and down is arranged on the hanger body 1, and the limiting blocks 4 are located in the limiting groove 6. The limiting blocks 4 limit the horizontal rotation of the hanger mandrels 2 to prevent the hanger mandrels 2 from rotating horizontally and keep the hanger mandrels 2 stable.

[0016] Preferably, the arc-shaped sealing ring 3 is bent into an arc shape and attached to the outer peripheral surface of the hanger body 1 to ensure the sealing performance of the connection between the hanger body 1 and the wellhead device.

[0017] The novel double-tube suspension device of the present utility model sets two hanger mandrels in the hanger body. Compared with the traditional single hanger mandrel, the utilization rate of the suspension device in a limited space is higher, which can save equipment costs and increase the oil and gas production.

[0018] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification of the present utility model, or directly or indirectly applied to other related technical fields, shall be included in the patent protection scope of the present utility model by the same token.

Claims

1. A novel double-tube suspension device, comprising a hanger body, characterized in that, There are two hanger mandrels vertically arranged inside the hanger body, and there are multiple locking holes and arc-shaped sealing rings on the outer peripheral surface of the hanger body.

2. The novel double-tube suspension device according to claim 1, characterized in that, The hanger mandrel is a tube body.

3. The novel double-tube suspension device according to claim 2, wherein Limit blocks are respectively arranged on the outer peripheral surfaces of the two hanger mandrels, a limit groove extending vertically is arranged on the hanger body, and the limit blocks are located in the limit groove.

4. The novel double-pipe suspension device according to claim 3, wherein, The arc-shaped sealing ring is bent into an arc shape and attached to the outer peripheral surface of the hanger body.

Images