CN115162330A - Detachable mat device of self-elevating platform/workboat and use method - Google Patents
Detachable mat device of self-elevating platform/workboat and use method Download PDFInfo
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- CN115162330A CN115162330A CN202210703951.XA CN202210703951A CN115162330A CN 115162330 A CN115162330 A CN 115162330A CN 202210703951 A CN202210703951 A CN 202210703951A CN 115162330 A CN115162330 A CN 115162330A
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- self
- elevating platform
- pile
- dock
- mat
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/72—Pile shoes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/0004—Nodal points
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0056—Platforms with supporting legs
- E02B2017/0073—Details of sea bottom engaging footing
- E02B2017/0082—Spudcans, skirts or extended feet
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Revetment (AREA)
Abstract
The invention discloses a detachable mat device of a self-elevating platform/workboat and a use method thereof, wherein the detachable mat device comprises the following components: grooves are formed in the upper surface of the mat body, a rubber buffer block is arranged in each groove, and after pile shoes of the self-elevating platform/working ship are installed in the corresponding grooves, the mat body is fixedly connected with the self-elevating platform/working ship through connecting pieces; arranging the mat body in the dock in advance, and pumping ballast water to ensure that the butt joint process cannot float; towing the self-elevating platform/working ship into a dock, and placing the pile shoe seat into the groove of the sinking pad body; successfully connecting a medium-pressure water-carrying pipeline of the sinking pad body with a pile flushing pipeline of the pile shoe, reducing the height of the water surface in the dock and exposing the upper surface of the sinking pad body; and laying a rubber pad on the upper surface of the pile shoe, welding the connecting piece to the upper surface of the sinking pad body, and dragging the connected self-elevating platform/working ship and the sinking pad body away from the dock. The invention solves the limitation problem of the use of the pile shoe and enlarges the operation application range of the self-elevating platform/working ship.
Description
Technical Field
The invention belongs to the field of platform operation devices, and particularly relates to a detachable mat sinking device for a self-elevating platform/working ship and a using method.
Background
Due to the variability of the sub-sea geological conditions, the jack-up platform/vessel may no longer be suitable for the well site at some special operations due to the presence of the original pile shoe for the following reasons: 1. the bearing capacity of the foundation at the bottom of the pile shoe is weak, and the length of the pile leg cannot meet the requirement of larger mud entering. 2. There is a possibility of puncture of the foundation at the bottom of the pile shoe. It is therefore necessary to enlarge the existing shoe to meet the operational requirements of that location.
The traditional way is to reform the pile shoe and enlarge the size of the steel structure. The traditional pile shoe enlarging method has the following defects:
1) If the pile shoe is enlarged, the pile pulling force is increased, and the platform is difficult to dislocate;
2) If the pile shoe is directly transformed into a sinking pad form, the stress mode of the pile leg is changed, so that the pile leg near the pile shoe needs to be replaced at the same time;
3) The pile shoe is enlarged or transformed into a sinking pad form, so that the construction period is long and the service efficiency of the platform is influenced;
disclosure of Invention
The invention aims to overcome the defects in the prior art, provides a detachable mat device for a self-elevating platform/workboat and a using method thereof, which are convenient to recover after being transformed, solve the problem of limitation of use of pile shoes and enlarge the operation application range of the self-elevating platform/workboat.
The purpose of the invention can be realized by the following technical scheme.
The detachable mat sinking device for the self-elevating platform/workboat comprises a mat sinking body, wherein grooves for installing pile shoes are formed in the upper surface of the mat sinking body inwards, a rubber buffer block is arranged in each groove, and after the pile shoes of the self-elevating platform/workboat are installed in the corresponding grooves, the mat sinking body is fixedly connected with the self-elevating platform/workboat through a connecting piece.
The mat body is composed of a plurality of cabins, and is determined to be rectangular or approximately triangular according to the number of pile legs in the self-elevating platform/working ship.
The position, size, shape and number of the grooves are matched with those of the pile shoes, and lower quick connectors are arranged in the grooves and connected with ballast water pipelines in the mat body.
The rubber buffer block is made of solid rubber or rubber with a cavity, and the rubber buffer block is provided with a through hole for installing a lower quick coupling.
The pile shoe upper surface of jack-up platform/work ship is evenly arranged to the connecting piece, every all be provided with the rubber pad between connecting piece and the pile shoe, after the pile shoe seat of jack-up platform/work ship to the recess that corresponds, connecting piece and mattress body welded connection realize mattress body and jack-up platform/work ship's connection.
The purpose of the invention can be realized by the following technical scheme.
The invention relates to a using method of a detachable mat device of a self-elevating platform/workboat, which comprises the following processes:
the method comprises the following steps: prefabricating a mat body;
step two: surveying a foundation condition of a desired operation site of the jack-up platform/vessel;
step three: judging whether the existing pile end form of the self-elevating platform/working ship is suitable for the foundation condition of the expected operation place, if the existing pile end form of the self-elevating platform/working ship is suitable for executing the step eight, if the pile end is that a pile shoe is not suitable for the expected well position operation, executing the step four, and if the pile end is provided with a sinking pad body which is not suitable for the expected well position operation, executing the step nine;
step four: arranging the mat body in a dock in advance, wherein a rubber buffer block and a lower quick coupling are arranged in a groove of the mat body in advance, pumping ballast water to ensure that the mat body cannot float in the docking process, and opening a dock gate after filling water in the dock;
step five: towing the self-elevating platform/working ship into a dock, installing an upper quick connector at the position of a pile washing pipeline at the bottom of a pile shoe, and placing the pile shoe into a groove in a sinking pad body;
step six: confirming that the medium-pressure water-carrying pipeline of the sinking pad body is successfully connected with the pile flushing pipeline of the pile shoe through the connection of the upper quick connector and the lower quick connector, reducing the height of the water surface in the dock, exposing the upper surface of the sinking pad body and facilitating welding construction;
step seven: laying a rubber pad on the upper surface of the pile shoe, welding the connecting piece to the upper surface of the mat body, opening a dock gate of the dock after the dock is filled with water, and dragging the connected self-elevating platform/working ship and the mat body away from the dock;
step eight: performing operation according to the operation mode of the conventional self-elevating platform/working ship, and executing a second step to the next expected operation place of the self-elevating platform/working ship according to an operation plan;
step nine: dragging the connected self-elevating platform/working ship and the sinking pad body into a dock together, and sealing a dock gate;
step ten: cutting and removing the welded connection piece in a floating state, and removing the rubber pad on the upper part of the pile shoe;
step eleven: and pumping ballast water into the mat body, enabling the ballast water to be separated from the self-elevating platform/working ship under the action of gravity, automatically disconnecting the ballast water pipeline, removing an upper quick connector on the pile shoe underwater, opening a dock gate, dragging the self-elevating platform/working ship separated from the mat body away from the dock, and executing the step eight.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
the detachable sinking pad device of the self-elevating platform/working ship is provided with the rubber buffer block at the position of the groove contacted with the pile shoe, so that the uniform transmission of load is realized, the bending moment at the end part of the pile shoe is reduced, the reconstruction of a pile leg is avoided, and the reconstruction cost is reduced.
The invention adopts the steel connecting piece to realize the connection of the self-elevating platform/working ship and the detachable sinking pad device, and the rubber cushion is arranged between the connecting piece and the pile shoe to buffer, thus ensuring that the original pile shoe structure is not damaged, further realizing the release of the sinking pad and the platform/working ship by a method of cutting the connecting piece when the sinking pad is not needed, and having fast transformation speed and low cost.
According to the detachable mat device for the self-elevating platform/working ship and the using method, the pile shoe is inserted into the detachable mat device, so that the damage to the original pile shoe structure is avoided, and the reconstruction time and the reconstruction cost are effectively reduced in two stages of adding and removing the device.
The invention is designed according to the soil characteristic of the predicted pile inserting position of the self-elevating platform/working ship, can effectively control the predicted mud entering of the self-elevating platform/working ship at the soft seabed, and further expands the adaptive operation range of the original platform/working ship.
Drawings
FIG. 1 is a schematic view of the overall structure of the detachable mat device of the self-elevating platform/vessel of the present invention;
FIG. 2 is an enlarged view of a portion of the removable mat device of the jack-up platform/vessel of the present invention;
fig. 3 is a flow chart of a method of using the removable mat device of the jack-up platform/vessel of the present invention.
Reference numerals: 1-jack-up platform/vessel; 2-sinking pad body; 3-a groove; 4-a rubber buffer block; 5-a connecting piece; 6-rubber pad, 7-pile shoe and 8-pile leg.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
As shown in fig. 1 and 2, the detachable mat device of the jack-up platform/workboat of the present invention is a steel structure, and includes a mat body 2, the mat body 2 is composed of several compartments similar to the conventional mat structure, and the mat body 2 may be a rectangle (4-leg jack-up platform/workboat), an approximate triangle (3-leg jack-up platform/workboat), a rectangle with a hollowed out center (4-leg jack-up platform/workboat), or an approximate triangle with a hollowed out center (3-leg jack-up platform/workboat) depending on the number of the pile legs 8 in the jack-up platform/workboat 1. The upper surface of the mat body 2 is inwards provided with grooves 3 for installing the pile shoes 7, and the positions, sizes, shapes and numbers of the grooves 3 are matched with the pile shoes 7, so that the mat body can be disc-shaped or rectangular in order to adapt to the shapes of the pile shoes 7. Every all be provided with rubber buffer block 4 in the recess 3, rubber buffer block 4 can adopt solid rubber or take cavity rubber to make, and rubber buffer block 4 can be less than whole recess 3, also can distribute in recess 3 for a plurality of pieces. The rubber buffer block 4 is provided with a through hole for mounting a lower quick coupling. And a lower quick joint is arranged in the groove 3 and is connected with a ballast water pipeline in the mat sinking body 2, an upper quick joint is arranged in a pile shoe 7 of the self-elevating platform/working ship 1 and is connected with a pile flushing pipeline in the pile leg 8, and the ballast water pipeline and the pile flushing pipeline are connected through the connection of the upper quick joint and the lower quick joint. After the pile shoe 7 of the self-elevating platform/working ship 1 is installed to the corresponding groove 3, the connection between the mat body 2 and the self-elevating platform/working ship 1 is realized by fixing the connecting piece 5.
The upper surfaces of pile shoes 7 of the self-elevating platforms/workboards 1 are uniformly arranged on the connecting pieces 5, rubber pads 6 are arranged between the connecting pieces 5 and the pile shoes 7, after the pile shoes 7 of the self-elevating platforms/workboards 1 are seated in the corresponding grooves 3, the connecting pieces 5 are connected with the mat body 2 in a welding mode, the pile shoes 7 are fixed in the corresponding grooves 3, and then the mat body 2 is connected with the self-elevating platforms/workboards 1.
As shown in fig. 3, the method for using the detachable mat unit of the jack-up platform/workboat of the present invention comprises the following processes:
the method comprises the following steps: the detachable mat body 2 can be prefabricated in a shipyard;
step two: investigating the foundation of a desired operation site of the jack-up platform/vessel 1;
step three: judging whether the existing pile end form of the self-elevating platform/workboat 1 is suitable for the foundation condition of the expected operation place or not, if the existing pile end form is suitable for executing the step eight, if the pile end is that the pile shoe 7 is not suitable for the expected well position operation, executing the step four, and if the pile end is provided with the sinking pad body 2 which is not suitable for the expected well position operation, executing the step nine;
step four: arranging the mat body 2 in a dock in advance, wherein a rubber buffer block 4 and a lower quick coupling are arranged in a groove 3 of the mat body in advance, pumping ballast water to ensure that the mat body cannot float in the docking process, and opening a dock gate after filling water in the dock;
step five: towing the self-elevating platform/workboat 1 into a dock, installing an upper quick connector (underwater installation) at the position of a pile flushing pipeline at the bottom of a pile shoe 7, and placing the pile shoe 7 into a groove 3 in a mat body 2;
step six: confirming that the pressure water-carrying pipeline in the mat sinking body 2 is successfully connected with the pile flushing pipeline of the pile shoe 7 through the connection of the upper quick connector and the lower quick connector, reducing the height of the water surface in the dock, exposing the upper surface of the mat sinking body 2 and facilitating welding construction;
step seven: laying a rubber pad 6 on the upper surface of the pile shoe 7, welding the connecting piece 5 to the upper surface of the mat body 2, opening a dock gate of the dock after the dock is filled with water, and dragging the connected self-elevating platform/working ship 1 and the mat body 2 away from the dock;
step eight: performing operation according to the operation mode of the conventional self-elevating platform/working ship 1, and executing a step two on the next expected operation site of the self-elevating platform/working ship 1 according to an operation plan;
step nine: dragging the connected self-elevating platform/working ship 1 and the sinking pad body 2 into a dock together, and sealing a dock gate;
step ten: cutting and removing the welded connecting piece 5 in a floating state, and removing the rubber pad 6 on the upper part of the pile shoe 7;
step eleven: and pumping ballast water into the mat body 2, separating the ballast water from the self-elevating platform/working ship 1 under the action of gravity, automatically disconnecting a ballast water pipeline, removing an upper quick connector on the pile shoe 7 underwater, opening a dock gate, dragging the self-elevating platform/working ship 1 separated from the mat body 2 out of the dock, and executing the step eight.
By using the detachable mat sinking device for the self-elevating platform/workboat and the using method thereof, the self-elevating platform/workboat 1 can be suitable for silt geology with poor foundation bearing capacity, ballast water in the mat sinking body 2 is emptied by the ballast system to provide partial buoyancy when the self-elevating platform/workboat 1 is out of position, the ship body on the self-elevating platform can also provide partial buoyancy by entering water, and the ship body is separated from the seabed under the action of the two parts of buoyancy. The rubber buffer blocks 4 and the rubber pads 6 can reduce the connection rigidity between the pile shoe and the mat body, avoid the transformation of the pile leg 8 and the pile shoe 7 of the self-elevating platform/workboat 1, and facilitate the separation of the mat body 2 and the pile shoe 7.
While the present invention has been described in terms of its functions and operations, which are illustrated in the accompanying drawings, it is to be understood that such embodiments are merely illustrative and not restrictive of the broad invention, and that this invention can be embodied in many forms without departing from the spirit and scope of the appended claims.
Claims (6)
1. The utility model provides a from lift-type platform/workboat can dismantle heavy pad device, its characterized in that, including sinking pad body (2), sinking pad body (2) upper surface is inwards equipped with recess (3) that are used for installing pile shoe (7), every all be provided with rubber buffer block (4) in recess (3), install to recess (3) that correspond back from lift-type platform/workboat (1) pile shoe (7), realize sinking pad body (2) and being connected from lift-type platform/workboat (1) through connecting piece (5) are fixed.
2. The detachable mat device of the jack-up platform/vessel according to claim 1, wherein the mat body (2) is composed of several compartments, and the mat body (2) is rectangular or approximately triangular according to the number of the legs (8) in the jack-up platform/vessel (1).
3. The detachable mat device of self-elevating platform/vessel according to claim 1, characterized in that the position, size, shape and number of said grooves (3) are matched with those of the pile shoe (7), and a lower quick connector is arranged in said groove (3) and connected with the ballast water line in the mat body (2).
4. The detachable mat device of a jack-up platform/workboat according to claim 1, characterized in that the rubber buffer block (4) is made of solid rubber or rubber with a cavity, and the rubber buffer block (4) is provided with a through hole for installing a lower quick coupling.
5. The detachable mat device of self-elevating platform/workboat according to claim 1, characterized in that the connecting members (5) are evenly arranged on the upper surface of the pile shoe (7) of the self-elevating platform/workboat (1), a rubber pad (6) is arranged between each connecting member (5) and the pile shoe (7), and after the pile shoe (7) of the self-elevating platform/workboat (1) is seated in the corresponding groove (3), the connecting members (5) are welded with the mat body (2), so as to connect the mat body (2) and the self-elevating platform/workboat (1).
6. A method of using the detachable mat device of the jack-up platform/vessel according to any one of claims 1 to 5, comprising the following processes:
the method comprises the following steps: prefabricating a mat body (2);
step two: investigating the foundation of a desired working site of the jack-up platform/vessel (1);
step three: judging whether the existing pile end form of the self-elevating platform/working ship (1) is suitable for the foundation condition of an expected operation place or not, if the existing pile end form is suitable for the execution step eight, if the pile end is that a pile shoe (7) is not suitable for expected well position operation, executing the step four, and if the pile end is provided with a sinking pad body (2) which is not suitable for the expected well position operation, executing the step nine;
step four: arranging the mat body (2) in the dock in advance, arranging a rubber buffer block (4) and a lower quick joint in a groove (3) of the mat body in advance, pumping ballast water to ensure that the mat body cannot float in the docking process, and opening a dock gate after filling water in the dock;
step five: towing the self-elevating platform/working ship (1) into a dock, installing an upper quick connector at a pile flushing pipeline position at the bottom of a pile shoe (7), and placing the pile shoe (7) into a groove (3) in the mat body (2);
step six: confirming that the medium-pressure water-carrying pipeline of the mat body (2) is successfully connected with the pile flushing pipeline of the pile shoe (7) through the connection of the upper quick connector and the lower quick connector, reducing the height of the water surface in the dock, and exposing the upper surface of the mat body (2) to facilitate welding construction;
step seven: laying a rubber pad (6) on the upper surface of the pile shoe (7), welding the connecting piece (5) to the upper surface of the mat sinking body (2), opening a dock gate of the dock after the dock is filled with water, and dragging the connected self-elevating platform/working ship (1) and the mat sinking body (2) away from the dock;
step eight: performing operation according to the operation mode of the conventional self-elevating platform/working ship (1), and executing a step two on the next expected operation site of the self-elevating platform/working ship (1) according to an operation plan;
step nine: dragging the connected self-elevating platform/working ship (1) and sinking pad body (2) into a dock together, and closing a dock gate;
step ten: cutting and removing the welded connection piece (5) in a floating state, removing the rubber pad (6) on the upper part of the pile shoe (7);
step eleven: pumping ballast water into the mat body (2), separating the ballast water from the self-elevating platform/working ship (1) under the action of gravity, automatically disconnecting a ballast water pipeline, removing an upper quick connector on the pile shoe (7) underwater, opening a dock gate, dragging the self-elevating platform/working ship (1) separated from the mat body (2) away from a dock, and executing a step eight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210703951.XA CN115162330B (en) | 2022-06-21 | 2022-06-21 | Detachable mat device of self-elevating platform/working ship and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210703951.XA CN115162330B (en) | 2022-06-21 | 2022-06-21 | Detachable mat device of self-elevating platform/working ship and use method |
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| Publication Number | Publication Date |
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| CN115162330A true CN115162330A (en) | 2022-10-11 |
| CN115162330B CN115162330B (en) | 2023-04-21 |
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| CN202210703951.XA Active CN115162330B (en) | 2022-06-21 | 2022-06-21 | Detachable mat device of self-elevating platform/working ship and use method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203403409U (en) * | 2013-06-18 | 2014-01-22 | 天津新港船舶重工有限责任公司 | Self-elevating platform pile shoe structure |
| US20150354164A1 (en) * | 2014-06-09 | 2015-12-10 | Offshore Technology Development Pte Ltd | Modified Spudcan With Optimal Peripheral Skirt For Enhanced Performance Of Jackup Operations |
| CN109778822A (en) * | 2019-03-13 | 2019-05-21 | 交通运输部天津水运工程科学研究所 | A kind of disposable shoe expansion instrument of jack-up unit and application method |
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2022
- 2022-06-21 CN CN202210703951.XA patent/CN115162330B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203403409U (en) * | 2013-06-18 | 2014-01-22 | 天津新港船舶重工有限责任公司 | Self-elevating platform pile shoe structure |
| US20150354164A1 (en) * | 2014-06-09 | 2015-12-10 | Offshore Technology Development Pte Ltd | Modified Spudcan With Optimal Peripheral Skirt For Enhanced Performance Of Jackup Operations |
| CN109778822A (en) * | 2019-03-13 | 2019-05-21 | 交通运输部天津水运工程科学研究所 | A kind of disposable shoe expansion instrument of jack-up unit and application method |
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| Title |
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| 谭越等: "可移动生产储油平台的应用与发展", 《中国造船》 * |
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| CN115162330B (en) | 2023-04-21 |
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