CN217151859U

CN217151859U - Single-cylinder multi-well marine riser

Info

Publication number: CN217151859U
Application number: CN202123451083.0U
Authority: CN
Inventors: 聂海涛; 王志明; 马会珍
Original assignee: Shandong Qilong Offshore Petroleum Steel Pipe Co ltd
Current assignee: Shandong Qilong Offshore Petroleum Steel Pipe Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-08-09
Anticipated expiration: 2031-12-31

Abstract

The application discloses a single-cylinder multi-well marine riser, which comprises a main pipe, a first joint and a second joint, wherein a plurality of branch pipes penetrate through one end of the main pipe and extend to the other end of the main pipe; the first joint is provided with coupling assembling, and the second connects the cooperation subassembly that is provided with and the mutual adaptation of coupling assembling, and a plurality of main pipes connect interconnect through first joint and second, and first joint and second connect through coupling assembling and the mutual adaptation of cooperation subassembly to make the branch pipe in interconnect's the main pipe correspond each other. Through the arrangement of the single-cylinder multi-well drilling device, a single-cylinder multi-well drilling mode is achieved, the arrangement of the station device is avoided, the cost is saved, and the benefit is improved.

Description

Single-cylinder multi-well marine riser

Technical Field

The application belongs to the technical field of petroleum machinery, and particularly relates to a single-cylinder multi-well marine riser.

Background

The offshore drilling has the characteristics of severe environment and high exploitation cost, the water-proof guide pipe is a drilling fluid circulation and well mouth holding force structure for offshore oil and gas field development, the load borne by the water-proof guide pipe mainly has dead weight, well mouth load, wind, wave, flow and other environmental loads, the offshore drilling mostly adopts a well slot mode to drill, one well can only drill one well in a conventional mode and is limited by the number of the well slots, the number of development wells of each platform is limited, the development cost of a single well is high, in recent years, the offshore drilling is developed towards a marginal oil field and a small oil field, the yield of the marginal oil field and the small oil field is low, the exploitation difficulty is high, the cost is high, in order to further reduce the exploitation cost, the drilling mode of a single-cylinder double well and a single-cylinder triple well is vigorously popularized, the number of the development wells can be increased by two to three times on the basis of the original well slots, and the exploitation cost of offshore oil and gas is greatly saved.

At present, a single-cylinder multi-well operation mode adopts a standing drilling tool drilling technology, a standing drilling tool needs to be put into a standing device in advance when drilling of one well is completed and well cementation is carried out, the standing device is put out to drill a second well or a third well, the well track deflection occurs when the second well or the third well is drilled in the drilling of the standing device, the well cementation and the recovery of the standing device are difficult, the operation time is long, and the like.

It will thus be seen that the prior art is susceptible to further improvement and enhancement.

SUMMERY OF THE UTILITY MODEL

The utility model provides a single section of thick bamboo multi-well marine riser to solve at least one among the above-mentioned technical problem.

In order to achieve the purpose, the utility model provides a single-cylinder multi-well marine riser, which comprises a main pipe, a first joint and a second joint, wherein a plurality of branch pipes pass through one end of the main pipe and extend to the other end of the main pipe; the first joint is provided with coupling assembling, and the second connects the cooperation subassembly that is provided with and the mutual adaptation of coupling assembling, and a plurality of main pipes connect interconnect through first joint and second, and first joint and second connect through coupling assembling and the mutual adaptation of cooperation subassembly to make the branch pipe in interconnect's the main pipe correspond each other.

By means of mutual adaptation of the connecting assembly and the matching assembly, the branch pipes in the main pipes which are connected with each other can be enabled to correspond to each other when the first joint and the second joint are connected, and the low branch pipes in the main pipes which are connected with each other are prevented from corresponding unevenly; the branch pipes are arranged in the main pipe and are fixed in the branch pipes through the first joint and the second joint, so that a single-cylinder multi-well drilling mode can be realized without a station device, and the main pipe provided with the branch pipes can drill an angled well hole by utilizing a limited well slot of an offshore platform; mutual interference among a plurality of wells is avoided in the drilling process, and the drilling device can be limited by the arrangement of the branch pipes, so that the well track is ensured to drill according to the designed track; in addition, the drilling time is saved, the setting of a station position device is avoided, the cost is saved for oil exploitation, and the benefit is improved.

In a preferred implementation manner, the connection assembly includes a rotation stopping hole disposed on an inner side wall of the first joint, and the matching assembly includes a rotation stopping pin disposed on an outer side wall of the second joint, so that the first joint is engaged with the second joint. When the first joint of one main pipe is connected with the second joint of the other main pipe, the rotation stopping pin of the second joint is inserted into the rotation stopping hole of the first joint, so that on one hand, the main pipes can be ensured not to rotate mutually, and on the other hand, the branch pipes in the two main pipes which are connected mutually can be ensured to correspond mutually.

In a preferred implementation, the inner side wall of the first joint further comprises a guide groove, and the rotation stopping pin can move to the rotation stopping hole along the guide groove. This application can make the spline insert the spline hole along the guide way through the setting of guide way, inserts the effect that the spline hole had played the direction to the spline.

In a preferred implementation, the first joint and the second joint are provided with support plates provided with insertion holes mutually adapted to the branch pipes. The support plate is arranged, so that the support function on the branch pipe can be realized; on the other hand, can set up the arrangement of branch pipe through the position setting of backup pad jack to the position relation of backup pad and rotation stopping round pin and rotation stopping hole is mutually supported, thereby guarantees that the branch pipe in interconnect's the main pipe corresponds each other.

In a preferred implementation manner, the matching assembly further comprises an elastic piece, and the outer side wall of the second joint is provided with an annular groove matched with the elastic piece; when the first joint is clamped with the second joint, the elastic piece is abutted against the inner side wall of the first joint. This application passes through the setting of elastic component, and when the second of the first joint of a person in charge and another branch pipe connects each other the adaptation, can make the elastic component support by between the lateral wall that the inside wall that connects in the first joint and the second connect to improve the locking force between first joint and the second and connect, guarantee the connection between first joint and the second joint.

In a preferred implementation manner, the connecting assembly further comprises a plurality of locking holes and locking bolts, wherein the locking holes are arranged around the outer side wall of the first joint; when the first joint is clamped on the second joint, the locking bolt passes through the locking hole and abuts against the outer side wall of the second joint. This application is through the setting of locking hole and locking bolt, when the first joint block when the second connects, can make locking bolt pass the locking hole and lean on the lateral wall that connects in the second to guarantee the connection between first joint and the second joint.

In a preferred implementation, the legs are provided with sealing gaskets at both ends. This application sets up seal ring through the both ends at the branch pipe, when branch pipe and branch pipe are connected, can improve the sealed degree between the branch pipe.

In a preferred implementation, the sealing gasket is made of a rubber material.

In a preferred implementation, the branch tube is fixed to the socket by welding. This application makes the branch pipe pass through welded fastening in the jack, can further play fixed effect to the branch pipe, avoids the position of branch pipe to change.

In a preferred implementation, the resilient member is provided as a metal collar provided with a notch. This application sets up the elastic component into the metal lantern ring, and the metal lantern ring sets up the breach, and when the first joint of being responsible for and another second joint of being responsible for of a person in charge joint each other, the metal lantern ring can be by compression deformation, when first joint and second joint connect in place, the breach of metal lantern ring reconversion under elastic effect.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation of the invention. In the drawings:

FIG. 1 is a schematic view of a single-barrel multi-well riser according to an embodiment of the present disclosure;

FIG. 2 is a structural view of the first joint of FIG. 1;

FIG. 3 is a side view of the second joint of FIG. 1;

fig. 4 is a structural view of the second joint shown in fig. 1.

Description of reference numerals:

1. a main pipe;

2. a first joint; 201. a rotation stopping hole; 202. a guide groove; 203. a locking hole;

3. a second joint; 301. a rotation stopping pin; 302. an annular groove;

4. a support plate; 401. a jack;

5. a branch pipe; 501. a gasket is provided.

Detailed Description

In order to more clearly explain the overall concept of the present invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.

It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members.

In the present invention, unless otherwise expressly stated or limited, the terms "connected" and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection, or as an integral part; either directly or indirectly through intervening media, either internally or in any other relationship. However, the direct connection means that the two bodies are not connected to each other by the intermediate structure but connected to each other by the connecting structure to form a whole. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The description in this application as relating to "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

As shown in fig. 1-4, the utility model provides a single-cylinder multi-well riser, which comprises a main pipe 1, a first joint 2 and a second joint 3, wherein a plurality of branch pipes 5 pass through one end of the main pipe 1 and extend to the other end of the main pipe 1, and the first joint 2 and the second joint 3 are respectively arranged at two ends of the main pipe 1 and are used for fixing the branch pipes 5; first joint 2 is provided with coupling assembling, and the second connects 3 to be provided with the cooperation subassembly with the mutual adaptation of coupling assembling, and a plurality of person in charge 1 connect 3 interconnect through first joint 2 and second, and first joint 2 and second connect 3 through coupling assembling and the mutual adaptation of cooperation subassembly to make interconnect's the branch pipe 5 in being responsible for 1 correspond each other.

From the above description, it can be seen that the utility model discloses following technological effect is realized:

by the mutual adaptation of the connecting component and the matching component, the branch pipes 5 in the main pipes 1 which are connected with each other can be ensured to be mutually corresponding when the first joint 2 and the second joint 3 are connected, and the low branch pipes 5 in the main pipes 1 which are connected with each other are prevented from being mutually uneven; according to the method, the branch pipes 5 are arranged in the main pipe 1, the branch pipes 5 are fixed in the branch pipes 5 through the first joints 2 and the second joints 3, the single-cylinder multi-well drilling mode can be realized without a standing device, and the main pipe 1 provided with the branch pipes 5 can drill an angled well hole by utilizing a limited well slot of an offshore platform; mutual interference among a plurality of wells is avoided in the drilling process, and the drilling device can be limited by the arrangement of the branch pipes 5, so that the well track is drilled according to the designed memorability; in addition, the drilling time is saved, the setting of a station position device is avoided, the cost is saved for oil exploitation, and the benefit is improved.

In one embodiment, as shown in fig. 2, the connecting assembly includes a rotation stopping hole 201 disposed on an inner sidewall of the first connector 2, and the mating assembly includes a rotation stopping pin 301 disposed on an outer sidewall of the second connector 3, so as to engage the first connector 2 with the second connector 3. When the first joint 2 of one main pipe 1 and the second joint 3 of the other main pipe 1 are connected, by inserting the rotation stop pin 301 of the second joint 3 into the rotation stop hole 201 of the first joint 2, on the one hand, it can be ensured that the main pipes 1 do not rotate relative to each other, and on the other hand, it can be ensured that the branch pipes 5 in the two main pipes 1 connected to each other correspond to each other. In a specific implementation, the inner side wall of the first connector 2 further includes a guide groove 202, and the rotation stopping pin 301 can move along the guide groove 202 to the rotation stopping hole 201. This application can make the effect that the rotation stopping round pin 301 inserted rotation stopping hole 201 along guide slot 202 through the setting of guide slot 202, has played the direction to rotation stopping round pin 301 inserts rotation stopping hole 201.

In one embodiment, as shown in fig. 1, 2 and 4, the first and

second connectors

2 and 3 are provided with a support plate 4, and the support plate 4 is provided with a receptacle 401 adapted to the branch pipe 5. According to the support device, the support plate 4 is arranged, so that the support effect on the branch pipe 5 can be achieved; on the other hand, the arrangement of the branch pipes 5 can be set by the position arrangement of the insertion holes 401 of the support plate 4, and the positional relationship of the support plate 4 and the rotation stop pins 301 and the rotation stop holes 201 are matched with each other, thereby ensuring that the branch pipes 5 in the main pipes 1 connected to each other correspond to each other. In specific implementation, the rotation stopping holes 201 and the rotation stopping pins 301 are respectively arranged on the outer side walls of the first connector 2 and the second connector 3, and the positions of the insertion holes 401 on the support plate 4 are positioned according to the positions of the rotation stopping pins 301 so as to ensure that the insertion positions of the branch pipes 5 correspond to each other.

In one embodiment, the mating assembly further comprises an elastic member (not shown), the outer side wall of the second connector 3 is provided with an annular groove 302 adapted to the elastic member; when the first joint 2 is engaged with the second joint 3, the elastic member abuts against the inner side wall of the first joint 2. This application is through the setting of elastic component, and when the first joint 2 of a person in charge 1 and the second of another branch pipe 5 connect 3 mutual adaptations, can make the elastic component support and lean on between the inside wall of first joint 2 and the lateral wall of second joint 3 to improve the locking force between first joint 2 and the second joint 3, guarantee the connection between first joint 2 and the second joint 3. When the device is specifically implemented, the elastic piece is set to be a metal lantern ring, and the metal lantern ring is provided with a notch. This application can set up to the metal lantern ring through with the elastic component, and the metal lantern ring sets up the breach, and when the first joint 2 of being responsible for 1 and another second of being responsible for 1 of being responsible for of one connect 3 mutual joint, the metal lantern ring can be by compressive deformation, connects when targetting in place when first joint 2 and second connect 3, and the breach of the metal lantern ring is resilient under elastic effect. Of course, it will be understood by those skilled in the art that the elastic member may be provided with an elastic rubber or the like disposed in a ring shape.

In one embodiment, the connection assembly further includes a plurality of locking holes 203 and locking bolts, the locking holes 203 are disposed around the outer sidewall of the first connector 2, the locking holes 203 are shown in fig. 2, and the locking bolts are not shown; when the first joint 2 is engaged with the second joint 3, the locking bolt passes through the locking hole 203 and abuts against the outer side wall of the second joint 3. This application is through the setting of locking hole 203 and locking bolt, when first joint 2 block in the second connects 3, can make locking bolt pass locking hole 203 and support and lean on the lateral wall that connects 3 in the second to guarantee the connection between first joint 2 and the second joint 3.

In one embodiment, as shown in fig. 1, the manifold 5 is provided with sealing gaskets 501 at both ends. This application is through setting up seal ring 501 at the both ends of branch pipe 5, when branch pipe 5 and branch pipe 5 connect, can improve the sealed degree between the branch pipe 5. Of course, those skilled in the art will appreciate that the sealing washer 501 may be made of rubber, or alternatively, the sealing washer 501 may be made of rock wool.

In one embodiment, as shown in FIG. 1, the manifold 5 is secured to the socket 401 by welding. This application makes branch pipe 5 pass through welded fastening in jack 401, can further play fixed effect to branch pipe 5, avoids branch pipe 5's position to change. Of course, it will be understood by those skilled in the art that the first joint 2 and the second joint 3 are also fixed to the main pipe 1 by welding.

The utility model can be realized by adopting or using the prior art for reference in places which are not mentioned in the utility model.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A single-barrel multi-well riser, comprising:

the branch pipes penetrate through one end of the main pipe and extend to the other end of the main pipe, and the first joint and the second joint are respectively arranged at two ends of the main pipe and used for fixing the branch pipes;

the first joint is provided with coupling assembling, the second connect be provided with the cooperation subassembly of the mutual adaptation of coupling assembling, it is a plurality of the person in charge passes through the first joint with the second connects interconnect, the first joint with the second connects to pass through coupling assembling with the mutual adaptation of cooperation subassembly, so that interconnect's in the person in charge the branch pipe corresponds each other.

2. The monocular multi-well riser of claim 1, wherein the coupling assembly comprises a rotation stop hole disposed on the inner sidewall of the first joint, and the mating assembly comprises a rotation stop pin disposed on the outer sidewall of the second joint, so that the first joint is engaged with the second joint.

3. The monocular multi-well riser of claim 2, wherein the inner sidewall of the first joint further comprises a guide slot, the anti-rotation pin being movable along the guide slot to the anti-rotation hole.

4. A single-barrel multi-well riser according to claim 1, wherein the first and second joints are provided with support plates provided with insertion holes adapted to the branch pipes.

5. The single-barrel multi-well riser according to claim 1, wherein the mating assembly further comprises an elastic member, and an outer sidewall of the second joint is provided with an annular groove adapted to the elastic member;

when the first joint is clamped with the second joint, the elastic piece is abutted against the inner side wall of the first joint.

6. The monocular multi-well riser of claim 1, wherein the connection assembly further comprises a plurality of locking holes and locking bolts, the locking holes being provided around the first joint outer sidewall;

when the first joint is clamped on the second joint, the locking bolt penetrates through the locking hole and abuts against the outer side wall of the second joint.

7. The single-barrel multi-well riser of claim 1, wherein the legs are provided at both ends with sealing gaskets.

8. The mono multi-well riser of claim 7, wherein the sealing gasket is made of a rubber material.

9. The monocular multi-well riser of claim 4, wherein the branch pipe is fixed to the jack by welding.

10. The monocular multi-well riser of claim 5, wherein the resilient member is provided as a metal collar, the metal collar being provided with a notch.