CN112644655A - Method for abandoning jacket dragging ashore - Google Patents
Method for abandoning jacket dragging ashore Download PDFInfo
- Publication number
- CN112644655A CN112644655A CN202011350449.2A CN202011350449A CN112644655A CN 112644655 A CN112644655 A CN 112644655A CN 202011350449 A CN202011350449 A CN 202011350449A CN 112644655 A CN112644655 A CN 112644655A
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- China
- Prior art keywords
- jacket
- abandoned
- dragging
- sliding
- air bag
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/66—Tugs
- B63B35/68—Tugs for towing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/56—Towing or pushing equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Revetment (AREA)
Abstract
The invention discloses a method for dragging a abandoned jacket to the shore, which is characterized in that a winch and a sliding-assistant air bag are arranged on a wharf of a slope surface, the abandoned jacket floating on the sea surface is dragged to the wharf of the slope surface by means of the action of reducing friction force of the winch pulling force and the sliding-assistant air bag.
Description
Technical Field
The invention relates to the field of ocean engineering platform dismantling, in particular to a method for abandoning a jacket to drag ashore.
Background
In previous platform dismantling projects, dismantling the jacket is very dependent on large floating crane resources. Particularly for the abandoned jacket which is horizontally wet-towed to a wharf by the aid of the air bags, if a large floating crane is adopted to hoist the abandoned jacket to the shore, on one hand, the problem that the project period of demolition is seriously influenced by the resource shelf allocation of the large floating crane is faced, on the other hand, the cost expenditure of the resource of the large floating crane is high, and the profit margin of the demolition project is greatly reduced.
Therefore, the main technical problem of the current dismantling project is how to drag the abandoned jacket to the shore by adopting a dragging mode on the premise of not using large floating crane resources by aiming at the abandoned jacket which adopts the air bag assisted floating horizontal wet dragging to the wharf.
Disclosure of Invention
The invention provides a method for dragging a abandoned jacket ashore, which can drag the abandoned jacket ashore by using a winch and an air bag lamp device under the condition of not using a floating crane.
In order to solve the technical problem, the invention provides a method for abandoning a jacket to drag ashore, which is realized by the following steps: s1: fixing a winch on a wharf of the slope surface, and placing a sliding assisting air bag on the wharf of the slope surface to finish the preparation work of abandoning the jacket to drag to the shore front bank; s2: dragging the abandoned jacket with the floating-assisting air bag to the front edge of the wharf on the slope surface by using a tugboat; s3: connecting a steel wire rope on a winch with a dragging point of the abandoned jacket, and tightening the steel wire rope by using the winch or a dragging wheel; s4: the position and the direction of the abandoned jacket are adjusted by using a tugboat, so that the position and the direction of the abandoned jacket are consistent with the slide way of the sliding-assisting air bag paved on the wharf of the slope surface; s5: the connection between the tug and the abandoned conduit frame is released, and the tug is driven to be away from the safe distance; s6: the abandoned jacket is slowly dragged to the shore from the water surface along the taxiway by using a winch; s7: when the abandoned jacket is pulled to a preset position, the abandoned jacket is supported and fixed; s8: the sliding-assisting air bag and the floating-assisting air bag are recycled after being exhausted; s9: and (4) releasing the connection between the steel wire rope and the dragging point of the abandoned jacket, and removing the winch to finish the dragging ashore operation of the abandoned jacket.
Further, in step S1, before installing the sliding bladder on the towing surface, the marine growth, the anode, the riser clamp and other obstacles on the towing surface are cleaned to prevent the obstacles from piercing the sliding bladder.
Further, in step S3, the tow point of the jacket is discarded and the installation should be completed before the jacket is removed at sea.
Furthermore, in step S6, during the process of dragging the abandoned jacket to the shore, the constructor should pay attention to monitor the deformation of each of the sliding assisting airbags and inflate or deflate them in time to ensure that the sliding assisting airbags can be smoothly laid under the abandoned jacket, thus really playing the role of sliding assisting.
Further, in step S7, the support and fixation of the abandoned jacket are performed, and the abandoned jacket is temporarily stabilized on the taxiway by using the auxiliary mechanism during the dragging process of the abandoned jacket; when the abandoned jacket is pulled to a preset position, the antiskid airbag is exhausted to reduce the height of the gravity center of the abandoned jacket, so that the abandoned jacket is ensured to be in complete contact with the supporting structure, and then the installation of the antiskid fixing structure on the abandoned jacket is completed.
Further, after the step S9, there is provided a step S10, step S10: the final dismantling operation of the abandoned conduit bracket is completely finished on the slope wharf, and the overall movement of the abandoned conduit bracket is not carried out. The invention has the technical effects that: according to the invention, the winch and the sliding assisting air bag are arranged on the slope surface wharf, the abandoned jacket floating on the sea surface is pulled to the slope surface wharf by virtue of the effect of reducing friction force of the winch pulling force and the sliding assisting air bag, compared with the traditional method adopting large-scale floating crane hoisting, a large amount of floating crane resources are saved, the cost expenditure is reduced, the influence of difficult allocation of few grades of the large-scale floating crane resources is avoided, and the project construction period can be effectively shortened.
Drawings
Figure 1 is a schematic representation of a preferred embodiment of the present invention prior to the towing of a disposable jacket.
Figure 2 is a schematic illustration of a preferred embodiment of the present invention during a pull-down process of a disposable jacket.
Fig. 3 is a schematic illustration of a preferred embodiment of the present invention after completion of the pull-down of the disposable jacket.
Fig. 4 is a flow chart of the steps performed in a preferred embodiment of the present invention to complete the process of abandoning the jacket pull.
Reference numerals: a winch-1; a steel wire rope-2; dragging and pulling noodles-3; abandoning the jacket-4; a floating assisting air bag-5; sea surface-6; seabed mud level-7; a sliding assisting air bag-8.
Detailed Description
The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.
In the embodiment, as shown in fig. 1 to 4, the invention discloses a method for dragging a abandoned jacket 4 ashore, which is only applied to wharfs with slope surfaces, and the dragging ashore operation of the abandoned jacket 4 cannot be completed in a conventional vertical wharf.
S1: the winch 1 is fixed on a wharf of the slope, and the sliding assisting air bag 8 is placed on the wharf of the slope, so that the preparation work of abandoning the jacket 4 to drag the jacket to the front shore is completed.
Specifically, as shown in fig. 1, the wharf with slope surface is provided with a slope surface as the name implies, a sliding road is arranged on the slope surface, the slope surface on the sliding road is a dragging surface 3, the sliding assisting air bags 8 are placed on the dragging surface 3, the sliding assisting air bags 8 are inflated until the top ends of the sliding assisting air bags 8 are kept on the same plane, and the air pressure in the sliding assisting air bags 8 can support and abandon the catheter frame 4. The spacing between the sliding aid pockets 8 must not be too great to ensure that they do not come into contact with the traction surface 3 during sliding. Before the sliding-aid air bag 8 is placed, marine organisms, anodes, riser clips and other obstacles on the dragging surface 3 are cleaned, and the obstacles are prevented from puncturing the sliding-aid air bag 8.
S2: the abandoned jacket 4 with the floating-assistant air bag 8 is towed to the front edge of the wharf on the slope surface by using a tugboat.
And installing a floating assisting air bag 8 on the disassembled abandoned jacket 4, and inflating the floating assisting air bag 8 until the floating assisting air bag floats to the sea level. When the floating assisting balloon 8 is installed, the floating assisting balloon 8 is not installed on one of the sides of the discarded jacket 4, which is a plane surface in contact with the sliding assisting balloon 8.
S3: the steel wire rope 2 on the winch 1 is connected with a dragging point of the abandoned jacket 4, and the winch 1 or a dragging wheel is used for tightening the steel wire rope 2.
The tow point for the jacket 4 is discarded and the installation is completed before the jacket is removed at sea. The winch 1 is used to tension the wire rope 2 between the winch 1 and the abandoned jacket 4, or the tug boat pulls the abandoned jacket 4 in reverse to tension the wire rope 2 between the winch 1 and the abandoned jacket 4.
S4: the position and the direction of the abandoned jacket 4 are adjusted by using a tugboat, so that the position and the direction are consistent with the slide way of the slide-assisting air bag 8 paved on the wharf of the slope surface.
The position and the direction of the abandoned jacket 4 are adjusted by using a tugboat, so that the side surface without the floating air bag 8 is opposite to the sliding road.
S5: the tug is disconnected from the discarded jacket 4 and is driven out of the safe distance.
S6: the winch 1 is used to slowly haul the abandoned jacket 4 ashore from the water surface along the taxiway.
In the process of dragging the abandoned jacket 4 to the shore, constructors need to pay attention to monitoring the deformation condition of each sliding assisting air bag 8 and timely inflate or exhaust the sliding assisting air bags, so that the sliding assisting air bags 8 can be smoothly paved below the abandoned jacket 4, and the sliding assisting effect is really achieved.
S7: the discarded jacket 4 is supported and secured after it has been pulled to a predetermined position.
The abandoned jacket 4 is supported and fixed, and the abandoned jacket 4 is temporarily stabilized on a sliding road by adopting an auxiliary mechanism in the dragging process of the abandoned jacket 4; when the abandoned jacket 4 is pulled to a preset position, the antiskid airbag 8 is exhausted to reduce the height of the gravity center of the abandoned jacket 4, so that the abandoned jacket 4 is ensured to be in complete contact with the supporting structure, and then the installation of the antiskid fixing structure on the abandoned jacket 4 is completed. The auxiliary mechanism can keep the stability and the safety of the abandoned jacket 4 in the sliding process and can play a role in temporary auxiliary fixing.
S8: the sliding-assistant air bag 8 and the floating-assistant air bag 8 are recovered after being exhausted.
S9: and (4) releasing the connection between the steel wire rope 2 and the dragging point of the abandoned jacket 4, and removing the winch 1, thereby completing the dragging and landing operation of the abandoned jacket 4.
S10: the final disassembly of the rejected pipe jacket 4 is completed on the ramp dock, after which the entire removal of the rejected pipe is no longer performed.
The specific implementation process of the invention is as follows: (1) cleaning marine life, anodes, riser clips and other obstacles on the dragging surface 3, placing sliding-assistant air bags 8 with proper intervals on the dragging surface 3, and inflating the sliding-assistant air bags 8; (2) the diver installs the floating-assisting air bag 8 and a dragging point on the disassembled abandoned jacket 4, and continuously inflates the floating-assisting air bag 8 until the jacket floats out of the water; (3) connecting a steel wire rope 2 on a winch 1 with a dragging point of a abandoned jacket 4, tensioning the steel wire rope 2 between the winch 1 and the abandoned jacket 4 by using the winch 1, or dragging the abandoned jacket 4 by a dragging wheel in a reverse direction to tension the steel wire rope 2 between the winch 1 and the abandoned jacket 4; (4) the position and the direction of the abandoned jacket 4 are adjusted by using a tugboat, so that the side surface without the floating airbag 8 is opposite to the sliding road; (5) the connection between the tug and the abandoned jacket 4 is released, and the tug is driven away from the safe distance; (6) the abandoned jacket 4 is slowly dragged to the shore along the sliding path from the water surface by using the winch 1, and in the process of dragging the abandoned jacket 4 to the shore, constructors need to pay attention to monitoring the deformation condition of each sliding assisting air bag 8 and timely inflate or exhaust the sliding assisting air bags, so that the sliding assisting air bags 8 can be smoothly paved below the abandoned jacket 4, and the sliding assisting function is really played; (7) in the dragging process of the abandoned jacket 4, an auxiliary mechanism is adopted to temporarily stabilize the abandoned jacket 4 on a sliding road; when the abandoned jacket 4 is pulled to a preset position, the antiskid airbag 8 is exhausted to reduce the height of the gravity center of the abandoned jacket 4, so that the abandoned jacket 4 is ensured to be in complete contact with the supporting structure, and then the installation of the antiskid fixing structure on the abandoned jacket 4 is completed; (8) the sliding assisting air bag 8 and the floating assisting air bag 8 are exhausted and then recovered, the connection between the steel wire rope 2 and the dragging point of the abandoned jacket 4 is released, and the winch 1 is removed; (10) the final disassembly of the rejected pipe jacket 4 is completed on the ramp dock, after which the entire removal of the rejected pipe is no longer performed.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (6)
1. A method for abandoning a jacket haulage ashore, comprising the steps of:
s1: fixing a winch on a wharf of the slope surface, and placing a sliding assisting air bag on the wharf of the slope surface to finish the preparation work of abandoning the jacket to drag to the shore front bank;
s2: dragging the abandoned jacket with the floating-assisting air bag to the front edge of the wharf on the slope surface by using a tugboat;
s3: connecting a steel wire rope on a winch with a dragging point of the abandoned jacket, and tightening the steel wire rope by using the winch or a dragging wheel;
s4: the position and the direction of the abandoned jacket are adjusted by using a tugboat, so that the position and the direction of the abandoned jacket are consistent with the slide way of the sliding-assisting air bag paved on the wharf of the slope surface;
s5: the connection between the tug and the abandoned conduit frame is released, and the tug is driven to be away from the safe distance;
s6: the abandoned jacket is slowly dragged to the shore from the water surface along the taxiway by using a winch;
s7: when the abandoned jacket is pulled to a preset position, the abandoned jacket is supported and fixed;
s8: the sliding-assisting air bag and the floating-assisting air bag are recycled after being exhausted;
s9: and (4) releasing the connection between the steel wire rope and the dragging point of the abandoned jacket, and removing the winch to finish the dragging ashore operation of the abandoned jacket.
2. A method for abandoning a jacket pull ashore as in claim 1, wherein: in step S1, before installing the sliding-aid air bag on the towing surface, the marine life, the anode, the riser clip and other obstacles on the towing surface are cleaned to prevent the obstacles from piercing the sliding-aid air bag.
3. A method for abandoning a jacket pull ashore as in claim 1, wherein: in step S3, the tow point of the jacket is discarded and the installation should be completed before the jacket is removed offshore.
4. A method for abandoning a jacket pull ashore as in claim 1, wherein: in step S6, during the process of dragging the abandoned jacket to the shore, the constructor should pay attention to the deformation of each of the sliding assisting airbags, and inflate or deflate them in time, so as to ensure that the sliding assisting airbags can be smoothly laid under the abandoned jacket, and thus the sliding assisting function is really achieved.
5. A method for abandoning a jacket pull ashore as in claim 1, wherein: in step S7, the abandoned jacket is supported and fixed, and the abandoned jacket is temporarily stabilized on the taxiway by using an auxiliary mechanism during the dragging process of the abandoned jacket; when the abandoned jacket is pulled to a preset position, the antiskid airbag is exhausted to reduce the height of the gravity center of the abandoned jacket, so that the abandoned jacket is ensured to be in complete contact with the supporting structure, and then the installation of the antiskid fixing structure on the abandoned jacket is completed.
6. A method for abandoning a jacket pull ashore as in claim 1, wherein: after step S9, there is provided step S10, step S10: the final dismantling operation of the abandoned conduit bracket is completely finished on the slope wharf, and the overall movement of the abandoned conduit bracket is not carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011350449.2A CN112644655A (en) | 2020-11-26 | 2020-11-26 | Method for abandoning jacket dragging ashore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011350449.2A CN112644655A (en) | 2020-11-26 | 2020-11-26 | Method for abandoning jacket dragging ashore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112644655A true CN112644655A (en) | 2021-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011350449.2A Pending CN112644655A (en) | 2020-11-26 | 2020-11-26 | Method for abandoning jacket dragging ashore |
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| CN (1) | CN112644655A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1763314A (en) * | 2005-05-26 | 2006-04-26 | 广东省航盛工程有限公司 | Method for moving large-scale heavy member to launch and float on water, and member mounting method |
| CN201193095Y (en) * | 2008-04-22 | 2009-02-11 | 中交一航局第二工程有限公司 | Launching arrangement of pontoon at vertical wall by means of floating gasbag |
| US20120192779A1 (en) * | 2010-03-30 | 2012-08-02 | Teppig Jr William | Autonomous maritime container system |
| CN103498420A (en) * | 2013-10-18 | 2014-01-08 | 中交一公局厦门工程有限公司 | Large-scale steel box beam ashore construction method |
| CN105200970A (en) * | 2015-08-31 | 2015-12-30 | 中国海洋石油总公司 | Method for dismantling discarded jacket through air bags |
-
2020
- 2020-11-26 CN CN202011350449.2A patent/CN112644655A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1763314A (en) * | 2005-05-26 | 2006-04-26 | 广东省航盛工程有限公司 | Method for moving large-scale heavy member to launch and float on water, and member mounting method |
| CN201193095Y (en) * | 2008-04-22 | 2009-02-11 | 中交一航局第二工程有限公司 | Launching arrangement of pontoon at vertical wall by means of floating gasbag |
| US20120192779A1 (en) * | 2010-03-30 | 2012-08-02 | Teppig Jr William | Autonomous maritime container system |
| CN103498420A (en) * | 2013-10-18 | 2014-01-08 | 中交一公局厦门工程有限公司 | Large-scale steel box beam ashore construction method |
| CN105200970A (en) * | 2015-08-31 | 2015-12-30 | 中国海洋石油总公司 | Method for dismantling discarded jacket through air bags |
Non-Patent Citations (1)
| Title |
|---|
| 赵刚栋: "Ｖ形底船利用气囊上排实例", 《中国修船》 * |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| TA01 | Transfer of patent application right |
Effective date of registration: 20230531 Address after: Room 202-f105, 2 / F, Ligang building podium, No. 82, West 2nd Road, Tianjin Binhai New Area pilot free trade zone (Airport Economic Zone) Applicant after: OFFSHORE OIL ENGINEERING Co.,Ltd. Applicant after: COOEC SUBSEA TECHNOLOGY Co.,Ltd. Address before: Room 202-f105, 2 / F, Ligang building podium, No. 82, West 2nd Road, Tianjin Binhai New Area pilot free trade zone (Airport Economic Zone) Applicant before: OFFSHORE OIL ENGINEERING Co.,Ltd. |
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| TA01 | Transfer of patent application right | ||
| CB02 | Change of applicant information |
Address after: Room 202-f105, 2 / F, Ligang building podium, No. 82, West 2nd Road, Tianjin Binhai New Area pilot free trade zone (Airport Economic Zone) Applicant after: OFFSHORE OIL ENGINEERING Co.,Ltd. Applicant after: CNOOC Shenzhen Ocean Engineering Technology Service Co.,Ltd. Address before: Room 202-f105, 2 / F, Ligang building podium, No. 82, West 2nd Road, Tianjin Binhai New Area pilot free trade zone (Airport Economic Zone) Applicant before: OFFSHORE OIL ENGINEERING Co.,Ltd. Applicant before: COOEC SUBSEA TECHNOLOGY Co.,Ltd. |
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| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210413 |
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| RJ01 | Rejection of invention patent application after publication |