CN115773073A - Workover riser top hoisting device - Google Patents
Workover riser top hoisting device Download PDFInfo
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- CN115773073A CN115773073A CN202211618114.3A CN202211618114A CN115773073A CN 115773073 A CN115773073 A CN 115773073A CN 202211618114 A CN202211618114 A CN 202211618114A CN 115773073 A CN115773073 A CN 115773073A
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Abstract
The invention relates to a workover riser top lifting device, which comprises: an upper frame; the lower frame is arranged below the upper frame at intervals and used for connecting the ground test tree and the lower well repairing equipment; the top ends of the two connecting leg assemblies are respectively fixed with the two sides of the upper frame, and the bottom ends of the two connecting leg assemblies are respectively fixed with the two sides of the lower frame; the lifting short joint is arranged at the top of the upper frame and is used for being connected with a top driving system; the lifting winch is arranged at the bottom of the upper frame and is used for being connected with a lower oil pipe suspension system; the workstation, both sides respectively with two connection leg subassembly slidable connection, the workstation is used for preventing the horizontal migration of oil pipe injection head and can be convenient for maintenance personal to overhaul equipment on the workstation. The invention is convenient for adjusting the length of the whole frame, and is convenient for workers to construct and maintain the equipment.
Description
Technical Field
The invention relates to the technical field of deep sea oil exploration, in particular to a workover riser top lifting device.
Background
The deep-sea oil and gas resources in China are quite rich, one of the key factors restricting the economic development of deep-sea oil and gas fields is high in deep-sea drilling and completion and later-stage workover cost, and the continuous requirements of efficient drilling and completion and light low-cost workover technical deep-sea oil and gas field exploration and development are met.
The deepwater light workover rig can improve the maneuverability of workover operation and reduce the deepwater workover cost, has obvious technical advantages, and is a research hotspot in the technical field of international workover. Although China is made in a certain more advanced oil and gas engineering equipment, no special top lifting device for the deepwater well workover riser in the deepwater exploration field exists at present.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a workover riser top lifting device, which facilitates adjusting the length of an integral frame, and facilitates construction and maintenance of equipment by workers.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention relates to a workover riser top lifting device, which comprises: an upper frame; the lower frame is arranged below the upper frame at intervals and used for connecting the ground test tree and the lower well repairing equipment; the top ends of the two connecting leg assemblies are respectively fixed with the two sides of the upper frame, and the bottom ends of the two connecting leg assemblies are respectively fixed with the two sides of the lower frame; the lifting short joint is arranged at the top of the upper frame and is used for being connected with a top driving system; the lifting winch is arranged at the bottom of the upper frame and is used for being connected with a lower oil pipe suspension system; the workstation, both sides respectively with two connection leg subassembly slidable connection, the workstation is used for preventing the horizontal migration of oil pipe injection head and can be convenient for maintenance personal to overhaul equipment on the workstation.
The workover riser top lifting device preferably comprises an upper connecting leg, a middle connecting leg and a lower connecting leg; the top of the upper connecting leg is fixedly connected with the upper frame through a first connecting piece, and the bottom of the upper connecting leg is provided with a first butt plate; the top of the middle connecting leg is provided with a second butt plate, and the first butt plate and the second butt plate are fixed through a second connecting piece; the bottom of the middle connecting leg is provided with a third butt joint plate, the top of the lower connecting leg is provided with a fourth butt joint plate, and the third butt joint plate and the fourth butt joint plate are fixed through a third connecting piece; the bottom of the lower connecting leg is fixedly connected with the lower frame through a fourth connecting piece.
In the workover riser top lifting device, preferably, trapezoidal recesses are formed in the front side and the rear side of the first butt joint plate, trapezoidal protrusions are formed in the corresponding positions of the second butt joint plate, and when the upper connecting leg is in butt joint with the middle connecting leg, the trapezoidal recesses in the first butt joint plate are in butt joint with the trapezoidal protrusions in the second butt joint plate; trapezoidal sunken also is provided with respectively in both sides around the third butt joint board, the corresponding position of fourth butt joint board also is provided with trapezoidal arch the middle part connect the leg with when the butt joint of sub-unit connection leg, trapezoidal sunken on the third butt joint board with trapezoidal protruding butt joint on the fourth butt joint board.
The workover riser top lifting device preferably comprises a first connecting piece, a second connecting piece, a third connecting piece and a fourth connecting piece, wherein the first connecting piece, the second connecting piece, the third connecting piece and the fourth connecting piece are bolts respectively.
The workover riser top lifting device is characterized in that the lifting short section is preferably fixed to the top of the upper frame through a connecting flange.
The workover riser top lifting device is characterized in that the workbench preferably comprises a concave bottom plate, a clamping plate and a guardrail; clamping plates are arranged on two sides of the concave bottom plate respectively, the clamping plates are clamped on a middle connecting leg of the connecting leg assembly, a sliding block is arranged on the end face, far away from the concave bottom plate, of the clamping plate in a protruding mode inwards, a sliding groove is formed in the middle connecting leg along the length direction of the middle connecting leg, and the sliding block slides in the sliding groove, so that the position of the concave bottom plate can be adjusted; after the concave bottom plate is arranged at a determined position, the clamping plate is locked through a fifth connecting piece; the guardrail is arranged at the top of the concave bottom plate.
Due to the adoption of the technical scheme, the invention has the following advantages:
(1) The integral frame has a compact structure, is safe and reliable, and can be provided with different winches according to requirements so as to adapt to the hoisting of different oil pipe injection heads and ground blowout preventers;
(2) The connecting leg parts are connected by self-centering bolts, so that the length of the whole frame can be conveniently adjusted according to the actual application condition, and the connecting leg parts are convenient to disassemble; the self-centering adopts a trapezoidal structure, so that the centering and the dismounting are convenient, the centering precision is improved, and the time is saved;
(3) The invention is light in weight, easy to transport and install, and directly interfaces with the ground test tree to obtain the minimum stacking height;
(4) The invention is provided with the workbench, thereby being convenient for installing and overhauling the equipment.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Like reference numerals refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the connection of the upper and middle connecting legs of the present invention wherein the first and second butt plates are in an unsecured condition;
FIG. 3 is a schematic view of the connection of the upper and middle connecting legs of the present invention wherein the first and second docking plates are in a secured condition;
FIG. 4 is a schematic structural diagram of the lifting sub of the present invention;
fig. 5 is a schematic structural view of the table of the present invention.
In the drawings, the reference numerals denote the following:
1-an upper frame; 2-a lower frame; 3-connecting the leg assembly; 301-upper connecting leg; 302-middle connecting leg; 303-lower connecting leg; 4-lifting the short section; 5, lifting a winch; 6-a workbench; 601-a concave floor; 602-clamping plate; 603-guard bar; 604-a slider; 7-a first connector; 8-a first butt plate; 9-a second docking plate; 10-a second connector; 11-a third docking plate; 12-a fourth docking plate; 13-a third connection; 14-a fourth connection; 15-trapezoidal depressions; 16-trapezoidal protrusions; 17-a connecting flange; 18-fifth connecting member.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The invention provides a workover riser top lifting device which is connected with a top driving system through a top lifting short section; the lifting winch is connected with the lower oil pipe suspension system; the connecting leg component part consists of three parts which are respectively connected on the upper frame and the lower frame by bolts; the workbench is arranged in the middle of the connecting leg assembly; therefore, the length of the whole frame is convenient to adjust, and the whole frame is convenient for workers to construct and maintain.
As shown in fig. 1, the present invention provides a workover riser top lifting device, including: an upper frame 1; the lower frame 2 is arranged below the upper frame 1 at intervals and used for connecting a ground test tree and lower well repair equipment; the top ends of the two connecting leg assemblies 3 are respectively fixed with the two sides of the upper frame 1, and the bottom ends of the two connecting leg assemblies 3 are respectively fixed with the two sides of the lower frame 2; the lifting short section 4 is arranged at the top of the upper frame 1 and is used for being connected with a top driving system; the lifting winch 5 is arranged at the bottom of the upper frame 1 and is used for being connected with a lower oil pipe suspension system; workstation 6, both sides respectively with two connection leg assembly 3 sliding connection, workstation 6 is used for preventing the horizontal migration of oil pipe injection head and can be convenient for maintenance personal overhauls equipment on the workstation.
In the above embodiment, preferably, the connecting leg assembly 3 includes the upper connecting leg 301, the middle connecting leg 302, and the lower connecting leg 303; the top of the upper connecting leg 301 is fixedly connected with the upper frame 1 through a first connecting piece 7, and the bottom of the upper connecting leg is provided with a first butt plate 8; the top of the middle connecting leg 302 is provided with a second butt plate 9, and the first butt plate 8 and the second butt plate 9 are fixed by a second connecting piece 10; the bottom of the middle connecting leg 302 is provided with a third butt plate 11, the top of the lower connecting leg 303 is provided with a fourth butt plate 12, and the third butt plate 11 and the fourth butt plate 12 are fixed through a third connecting piece 13; the bottom of the lower connecting leg 303 is fixedly connected to the lower frame 2 by a fourth connecting member 14. Therefore, the connecting leg assembly is convenient to disassemble, and the size of the whole frame can be changed according to requirements.
It should be noted that the middle connecting leg 302 may be formed by splicing a plurality of connecting leg portions, and the connecting manner is the same as the above-mentioned connecting manner.
In the above embodiment, preferably, as shown in fig. 2 and 3, trapezoidal recesses 15 are provided on the front and rear sides of the first butt plate 8, trapezoidal protrusions 16 are provided at corresponding positions of the second butt plate 9, and when the upper connecting leg 301 is butted with the middle connecting leg 302, the trapezoidal recesses 15 on the first butt plate 8 are butted with the trapezoidal protrusions 16 on the second butt plate 9;
similarly, trapezoidal recesses 15 are respectively formed in the front side and the rear side of the third butt joint plate 11, trapezoidal protrusions 16 are also formed in the corresponding positions of the fourth butt joint plate 12, and when the middle connecting leg 302 is in butt joint with the lower connecting leg 303, the trapezoidal recesses 15 in the third butt joint plate 11 are in butt joint with the trapezoidal protrusions 16 in the fourth butt joint plate 12. Therefore, the centering and the dismounting are convenient, the centering precision is increased, and the time is saved.
In the above embodiment, preferably, the first connecting member 7, the second connecting member 10, the third connecting member 13 and the fourth connecting member 14 are respectively bolts.
In the above embodiment, preferably, as shown in fig. 4, the lifting sub 4 is fixed to the top of the upper frame 1 by a connecting flange 17.
In the above embodiment, preferably, as shown in fig. 5, the work table 6 includes a concave bottom plate 601, a clamp plate 602, and a guard rail 603; clamping plates 602 are respectively arranged on two sides of the concave bottom plate 601, the clamping plates 602 are clamped on the middle connecting leg 302 of the connecting leg assembly 3, a sliding block 604 is protruded inwards from the end surface of the clamping plate 602 far away from the concave bottom plate 601, a sliding groove is arranged on the middle connecting leg 302 along the length direction of the middle connecting leg, and the sliding block 604 slides in the sliding groove, so that the position of the concave bottom plate 601 can be adjusted; after the concave bottom plate 601 is set at a determined position, the clamping plate 602 is locked by the fifth connecting member 18; guard rails 603 are provided on the top of the concave floor 601. From this, the first effect of workstation is for preventing the horizontal migration of oil pipe filling head, and maintenance personal can be convenient for to the maintenance personal overhauls equipment on the workstation to the second kind effect.
The workover riser top lifting device has a proper working window, so that the normal work of oil pipe hanger system parts such as an oil pipe injection head, a blowout prevention box, a surface blowout preventer and the like is not influenced by the movement of a ship body, and at present, according to the size and the weight of the existing oil pipe hanger system, the size, the bearing capacity and the material of a lifting frame can be correspondingly adjusted, and finite element analysis is carried out to determine that the whole frame meets the requirements; the height-adjustable workbench is arranged in the working window, one workbench has the function of preventing the oil pipe injection head from horizontally moving, and the second function can be convenient for people to overhaul equipment on the workbench; all parts of the lifting device connecting leg assembly are connected through bolts, in order to meet the strength requirement, the load born by each bolt is calculated, the type of the bolt is determined according to relevant industrial specifications, the bolt is connected through the bolts, the disassembly is convenient, and the size of the whole frame can be changed according to requirements; the frame is equipped with a winch for installing wire ropes and well workover riser equipment and other connection equipment, the winch is capable of performing hoisting operations at a speed greater than the heave work of the hull. The load capacity of the winch is at least 30% higher than the maximum hoisting weight by a safety margin.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. A workover riser top lift device, comprising:
an upper frame;
the lower frame is arranged below the upper frame at intervals and used for connecting the ground test tree and the lower well repairing equipment;
the top ends of the two connecting leg assemblies are respectively fixed with the two sides of the upper frame, and the bottom ends of the two connecting leg assemblies are respectively fixed with the two sides of the lower frame;
the lifting short joint is arranged at the top of the upper frame and is used for being connected with a top driving system;
the lifting winch is arranged at the bottom of the upper frame and is used for being connected with a lower oil pipe suspension system;
the workstation, both sides respectively with two connection leg subassembly slidable connection, the workstation is used for preventing the horizontal migration of oil pipe injection head and can be convenient for maintenance personal to overhaul equipment on the workstation.
2. The workover riser top lift of claim 1, wherein the connection leg assembly comprises an upper connection leg, a middle connection leg, and a lower connection leg;
the top of the upper connecting leg is fixedly connected with the upper frame through a first connecting piece, and the bottom of the upper connecting leg is provided with a first butt plate;
the top of the middle connecting leg is provided with a second butt plate, and the first butt plate and the second butt plate are fixed through a second connecting piece;
the bottom of the middle connecting leg is provided with a third butt joint plate, the top of the lower connecting leg is provided with a fourth butt joint plate, and the third butt joint plate and the fourth butt joint plate are fixed through a third connecting piece;
the bottom of the lower connecting leg is fixedly connected with the lower frame through a fourth connecting piece.
3. The workover riser top lift device of claim 2, wherein trapezoidal depressions are formed in the front side and the rear side of the first butt plate, trapezoidal protrusions are formed in the corresponding positions of the second butt plate, and when the upper connecting leg is in butt joint with the middle connecting leg, the trapezoidal depressions in the first butt plate are in butt joint with the trapezoidal protrusions in the second butt plate;
trapezoidal sunken is also provided with respectively to both sides around the third butt joint board, the corresponding position of fourth butt joint board also is provided with trapezoidal arch the middle part connect the leg with when the butt joint of sub-unit connection leg, trapezoidal sunken on the third butt joint board with trapezoidal protruding butt joint on the fourth butt joint board.
4. The workover riser top lift device of claim 2, wherein the first, second, third, and fourth connectors are each bolts.
5. The workover riser top lift device of claim 1, wherein the lift sub is secured to the top of the upper frame by a connecting flange.
6. The workover riser top lift of claim 2, wherein the platform comprises a concave bottom plate, a clamp plate, and a guardrail;
clamping plates are arranged on two sides of the concave bottom plate respectively, the clamping plates are clamped on a middle connecting leg of the connecting leg assembly, a sliding block is arranged on the end face, far away from the concave bottom plate, of each clamping plate in an inward protruding mode, a sliding groove is formed in the middle connecting leg along the length direction of the middle connecting leg, and the sliding block slides in the sliding groove, so that the position of the concave bottom plate can be adjusted;
after the concave bottom plate is arranged at a determined position, the clamping plate is locked through a fifth connecting piece;
the guardrail is arranged at the top of the concave bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211618114.3A CN115773073A (en) | 2022-12-15 | 2022-12-15 | Workover riser top hoisting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211618114.3A CN115773073A (en) | 2022-12-15 | 2022-12-15 | Workover riser top hoisting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115773073A true CN115773073A (en) | 2023-03-10 |
Family
ID=85392447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211618114.3A Pending CN115773073A (en) | 2022-12-15 | 2022-12-15 | Workover riser top hoisting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115773073A (en) |
-
2022
- 2022-12-15 CN CN202211618114.3A patent/CN115773073A/en active Pending
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