CN116289943A - Pile driving cap structure of marine drilling platform riser and pile driving method thereof - Google Patents
Pile driving cap structure of marine drilling platform riser and pile driving method thereof Download PDFInfo
- Publication number
- CN116289943A CN116289943A CN202310521875.5A CN202310521875A CN116289943A CN 116289943 A CN116289943 A CN 116289943A CN 202310521875 A CN202310521875 A CN 202310521875A CN 116289943 A CN116289943 A CN 116289943A
- Authority
- CN
- China
- Prior art keywords
- positioning column
- pile driving
- arc
- cylinder
- wall
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000005553 drilling Methods 0.000 title claims abstract description 24
- 230000008569 process Effects 0.000 claims description 8
- 230000009471 action Effects 0.000 description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 5
- 235000017491 Bambusa tulda Nutrition 0.000 description 5
- 241001330002 Bambuseae Species 0.000 description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 5
- 239000011425 bamboo Substances 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 241000251468 Actinopterygii Species 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/10—Follow-blocks of pile-drivers or like devices
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/04—Guide devices; Guide frames
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0007—Equipment or details not covered by groups E21B15/00 - E21B40/00 for underwater installations
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/727—Offshore wind turbines
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a pile driving cap structure of an offshore drilling platform riser and a pile driving method thereof, and relates to the field of shallow offshore oil platforms; the arc plates are in one-to-one correspondence with the sliding grooves and are in sliding fit, elastic pieces are connected between the arc plates and the groove walls of the corresponding sliding grooves, and all the arc plates can be spliced into a complete ring; the inner cylinder is provided with a plurality of arc plates, and the inner wall of each arc plate is provided with a plurality of supporting devices. The invention provides a pile driving cap structure of a riser of an offshore drilling platform and a pile driving method thereof, which are used for solving the problems of poor adaptability and high disassembly difficulty of the pile driving cap to the riser in the prior art, and achieving the purposes of improving the universality of the pile driving cap of the riser and facilitating the disassembly in a deformation state.
Description
Technical Field
The invention relates to the field of shallow sea oil platforms, in particular to a pile driving cap structure of an offshore drilling platform riser and a pile driving method thereof.
Background
For oil and gas development in shallow sea areas, a self-elevating drilling platform is often adopted for development operation, and before the self-elevating drilling platform is in place, a wellhead riser is required to be arranged in advance by adopting an engineering ship, and the arrangement mode is that a pile driving ship is adopted to pile the riser into mud to a set depth. In order to protect the riser during piling, a pile cap is typically placed on top of it. However, when the existing pile driving cap is used, the existing pile driving cap cannot be adapted to the riser with different wall thickness, so that the universality is weaker in different oil reservoir blocks or in different sea areas; in addition, the pile driving cap is easy to be beaten in the use process to generate irreversible deformation, so that the disassembly difficulty after the pile driving is finished is high, the pile driving cap is disassembled in a mechanical cutting mode even frequently on site, and the risk of damaging the top end of the waterproof conduit is avoided.
Disclosure of Invention
The invention provides a pile driving cap structure of an offshore drilling platform riser and a pile driving method thereof, which are used for solving the problems of poor adaptability and high disassembly difficulty of the pile driving cap to the riser in the prior art, and achieving the purposes of improving the universality of the pile driving cap of the riser and facilitating the disassembly in a deformation state.
The invention is realized by the following technical scheme:
the pile driving cap structure of the marine drilling platform riser comprises an outer barrel and an inner barrel, wherein the inner barrel comprises a plurality of arc-shaped plates, a plurality of evenly distributed sliding grooves are formed in the top surface of the inner part of the outer barrel, and the length direction of each sliding groove is along the radial direction; the arc plates are in one-to-one correspondence and sliding fit with the sliding grooves, and elastic pieces are connected between the arc plates and the corresponding groove walls of the sliding grooves; the elastic piece is used for providing radial inward tension force for the corresponding arc plates, and all the arc plates can be spliced into a complete ring shape; the inner cylinder is characterized by further comprising a supporting device positioned in the inner cylinder, wherein the supporting device is used for being in contact with the inner wall of each arc-shaped plate.
Aiming at the problems of poor suitability and high disassembly difficulty of a pile driving cap to a riser in the prior art, the invention provides a pile driving cap structure of the riser of an offshore drilling platform. The spout in this application sets up at the inside top surface of urceolus, spout length direction along the radial direction of urceolus, consequently makes each arc also can slide along radial. The arc plates are connected with the chute walls through the elastic pieces, and under the elastic action of the elastic pieces, the arc plates always have inward folding trend, and can be spliced into an integral annular inner barrel. The supporting device is arranged in the space surrounded by each arc-shaped plate, and the supporting device is always in contact with each arc-shaped plate under the elastic action of the elastic piece, so that each arc-shaped plate is supported from the inside, and the supporting capacity of the pile driving cap in the pile driving process is improved; in addition, the outer diameter of the supporting device is only required to be adjusted according to actual operation requirements, the outward opening degree of each arc plate can be regulated and controlled, and then the pile driving cap can be adapted to the riser with different wall thicknesses, so that the universality of piling operation of the riser in different oil reservoir blocks or different sea areas is obviously improved. Moreover, once serious deformation occurs to the pile driving cap in the prior art, the problem that the pile driving cap is difficult to detach from the riser is solved, and when the pile driving device is used, after pile driving operation is finished, the supporting device can firstly release the internal support of each arc plate, so that each arc plate is inwards contracted and closed, further the contact between the outer wall of the arc plate and the inner wall of the riser is released, the pile driving cap and the riser are not provided with a limit structure along the radial direction, and in the state, even if the pile driving cap is subjected to serious deformation, the pile driving cap can be taken out from the riser relatively easily, the pile driving cap does not need to be processed in a cutting mode and the like, so that the difficulty in detaching the pile driving cap is remarkably reduced, and the risk of damaging the riser is reduced.
Further, the supporting device comprises a positioning column connected with the outer cylinder and a supporting cylinder sleeved outside the positioning column, and the supporting cylinder is contacted with the inner wall of each arc-shaped plate; the outer cylinder, the positioning column and the supporting cylinder are coaxial.
The support device in this application needs to change the support section of thick bamboo of different external diameter sizes according to the actual conditions, consequently sets up the support section of thick bamboo cover and establishes outside the reference column, links to each other by reference column and urceolus, again with required support section of thick bamboo connect outside the reference column can for among the support device, realize the contact with each arc inner wall through the support section of thick bamboo.
Further, a first threaded through hole is formed in the top of the outer cylinder, first external threads matched with the first threaded through hole are formed in the outer wall of the positioning column, and the positioning column is connected with the outer cylinder through threads.
The support cylinder is provided with a second threaded through hole, the second threaded through hole is matched with the first external thread on the outer wall of the positioning column, and the support cylinder is connected with the positioning column through threads.
The top of the outer cylinder is provided with a first threaded through hole, and the positioning column is screwed into the first threaded through hole to realize threaded fit between the positioning column and the outer cylinder. Meanwhile, the first external threads of the outer wall of the positioning column can be used for being detachably connected with the supporting cylinders, so that the supporting cylinders with different sizes can be replaced conveniently. When the scheme is used, the positioning column is screwed into the second threaded through hole on the supporting cylinder, so that the connection between the positioning column and the supporting cylinder is realized, and then the top end of the positioning column is screwed into the first threaded through hole on the outer cylinder, so that the stable assembly of the positioning column, the outer cylinder and the supporting cylinder is realized.
When the outer cylinder or the inner cylinder of the pile driving cap are deformed and inconvenient to detach, the positioning column can be rotated downwards, so that the positioning column and the supporting cylinder can synchronously descend until the supporting cylinder is separated from the inner area of each arc-shaped plate, and each arc-shaped plate can shrink inwards at the moment, so that the pile driving cap and the waterproof guide pipe are tightly attached to each other, and the pile driving cap can be detached conveniently.
Further, two wings of the outer wall of the arc-shaped plate are respectively provided with a flexible pad. According to the scheme, the contact area between the arc-shaped plate and the inner wall of the piled riser is increased through the flexible pad, so that uniform and stable stress is facilitated.
The piling method based on the piling cap structure comprises the following steps:
adjusting gaps between the outer walls of the arc plates and the inner walls of the outer cylinders to enable the gaps to be equal to the wall thickness of the riser to be piled;
buckling a pile driving cap at the top end of the riser pipe, and starting pile driving operation until the mud entering depth of the riser pipe reaches the design requirement;
and (5) removing the pile driving cap.
Wherein preferably, the inner diameter of the outer cylinder is equal to or slightly larger than the outer diameter of the riser pipe.
Further, the method for adjusting the gap between the outer wall of each arc-shaped plate and the inner wall of the outer cylinder comprises the following steps:
selecting a supporting cylinder, so that the sum of the radius of the supporting cylinder and the wall thickness of the arc-shaped plate is equal to the inner radius of the riser;
screwing the positioning column into a second threaded through hole on the supporting cylinder to enable the supporting cylinder to be in threaded fit with the positioning column;
the positioning column and the supporting cylinder are arranged between the arc plates from bottom to top, the top end of the positioning column enters a first threaded through hole formed in the top of the outer cylinder, the positioning column is screwed upwards, the positioning column is matched with the top of the outer cylinder in a threaded manner, and the top surface of the positioning column is flush with the top surface of the outer cylinder.
Through the step of this scheme, can accomplish the connection cooperation between support section of thick bamboo, reference column and the urceolus. The top surface of the positioning column is flush with the top surface of the outer cylinder, so that the heavy hammer can stably and uniformly exert pressure downwards in the piling process, and engineering accidents of mud entering of the water-stop guide pipe due to the fact that hammering acting force is completely acted on the positioning column are avoided.
Further, in the process of installing the positioning column and the supporting cylinder between the arc plates, limiting the arc plates to ensure that the arc plates slide outwards in the radial direction in the corresponding sliding grooves and all the arc plates are not contacted with the supporting cylinder;
after the positioning column is matched with the top of the outer cylinder in a threaded manner, the restriction on each arc-shaped plate is released.
Wherein, each arc plate is limited, namely, each arc plate is pulled outwards in the radial direction, so that each arc plate is outwards expanded, and the supporting cylinder conveniently enters the area in the middle of each arc plate and can smoothly rotate.
Further, the method for detaching the pile driving cap comprises the following steps:
the dismounting tool is connected with the positioning column from the top;
the disassembly tool is screwed down to enable the positioning column to be separated from the threaded fit with the outer cylinder;
sending a disassembling tool downwards until the supporting cylinder is separated from the inner area of each arc-shaped plate;
and (5) lifting, and taking out the outer cylinder and the dismounting tool.
After the pile driving operation is completed, the pile driving cap at the top of the riser is detached by the detaching tool, wherein the detaching tool is used for being temporarily connected with the positioning column, and the specific connection mode is not limited. The dismounting tool is connected with the positioning column from the top of the outer cylinder and rotates downwards after connection, the positioning column is driven to rotate downwards synchronously until the first external thread on the positioning column is separated from the fit with the first threaded through hole, then the dismounting tool is directly lowered, the positioning column and the supporting cylinder are driven to move downwards synchronously until the supporting cylinder is separated from the inner area of each arc-shaped plate, namely, the supporting of each arc-shaped plate by the supporting cylinder is released, at the moment, each arc-shaped plate can be folded inwards under the action of the corresponding elastic piece, the clamping of each arc-shaped plate to the top end of the riser is released, and finally, the outer cylinder and the dismounting tool can be directly extracted, so that engineering risks brought by cutting operation and the like are avoided.
Further, the used dismounting tool comprises a telescopic rod and a limiting piece positioned at the upper end of the telescopic rod, wherein an external thread section is arranged on the outer wall of the lower end of the telescopic rod; the connecting hole is formed in the top of the positioning column, an inner thread section matched with the outer thread section is arranged on the inner wall of the connecting hole, and a positioning block is arranged at the bottom end of the thread of the inner thread section.
Considering that the positioning column and the supporting cylinder are required to be driven to descend to completely enter the waterproof conduit when the drilling ship is dismounted, the general connection is invalid or unstable, artificial underground fish is quite easy to cause, great interference is brought to later drilling operation, and even the fishing operation is required to be carried out after the drilling ship is in place, so that the construction period is seriously wasted. Therefore, this scheme has provided a specialized extracting tool who is used for this application pile driving cap structure, and this instrument passes through telescopic link adjustment length, carries out threaded connection through the external screw thread section of lower extreme outer wall and reference column for extracting tool, reference column and supporting sleeve realize threaded connection in proper order, rely on the screw thread to realize stable connection and cooperation, show to reduce the instrument and drop to the inside risk of riser pipe, improved the engineering security in the pile driving operation.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. according to the pile driving cap structure of the marine drilling platform riser and the pile driving method thereof, the outward opening degree of each arc-shaped plate can be regulated and controlled only by adjusting the outer diameter of the supporting device according to actual operation requirements, so that the pile driving cap can be adapted to the riser with different wall thicknesses, and the universality of the pile driving operation of the riser in different oil reservoir areas or different sea areas is obviously improved.
2. According to the pile driving cap structure of the marine drilling platform riser and the pile driving method thereof, after pile driving operation is finished, the supporting device can firstly release the internal support of each arc-shaped plate, so that each arc-shaped plate is contracted inwards to be close, and further the contact between the outer wall of each arc-shaped plate and the inner wall of the riser is released, so that a limit structure in the radial direction is not arranged between the pile driving cap and the riser any more, and in the state, even if the pile driving cap is severely deformed, the pile driving cap can be taken out of the riser relatively easily, and the pile driving cap does not need to be processed in a cutting mode and the like, so that the difficulty in disassembling the pile driving cap is remarkably reduced, and the risk of damaging the riser is reduced.
3. According to the pile driving cap structure of the marine drilling platform riser and the pile driving method thereof, a special dismounting tool is designed, the length is adjusted through the telescopic rod, and the outer thread section of the outer wall of the lower end is in threaded connection with the positioning column, so that the dismounting tool, the positioning column and the supporting sleeve are in threaded connection in sequence, stable connection and cooperation are realized by means of threads, the risk that the tool falls into the riser to form a fish is remarkably reduced, and engineering safety in pile driving operation is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention. In the drawings:
FIG. 1 is a cross-sectional view of an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of an arc plate according to an embodiment of the present invention;
FIG. 3 is a schematic view of the structure of the outer cylinder according to the embodiment of the present invention;
FIG. 4 is a schematic view of a supporting cylinder according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a positioning column in a semi-sectional structure according to an embodiment of the present invention;
FIG. 6 is a schematic view of a disassembly tool according to an embodiment of the invention;
fig. 7 is a cross-sectional view of an embodiment of the invention with the pile cap removed.
In the drawings, the reference numerals and corresponding part names:
the device comprises a 1-outer cylinder, a 2-arc plate, a 3-sliding groove, a 4-elastic piece, a 5-positioning column, a 6-supporting cylinder, a 7-first threaded through hole, a 8-second threaded through hole, a 9-flexible pad, a 10-telescopic rod, a 11-limiting piece, a 12-external thread section, a 13-connecting hole, a 14-internal thread section, a 15-positioning block and a 16-riser.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention.
Example 1
The pile driving cap structure of the marine drilling platform riser pipe as shown in fig. 1, 2 and 3 comprises an outer barrel 1 and an inner barrel, and is characterized in that the inner barrel comprises a plurality of arc-shaped plates 2, a plurality of evenly distributed sliding grooves 3 are formed in the top surface of the inner part of the outer barrel 1, and the length direction of the sliding grooves 3 is along the radial direction; the arc plates 2 are in one-to-one correspondence and sliding fit with the sliding grooves 3, and elastic pieces 4 are connected between each arc plate 2 and the corresponding groove wall of the sliding groove 3; the elastic piece 4 is used for providing a radial inward pulling force for the corresponding arc-shaped plates 2, and all the arc-shaped plates 2 can be spliced into a complete ring shape; and the inner barrel also comprises a supporting device positioned inside the inner barrel, wherein the supporting device is used for being in contact with the inner wall of each arc-shaped plate 2.
The supporting device comprises a positioning column 5 connected with the outer cylinder 1 and a supporting cylinder 6 sleeved outside the positioning column 5, wherein the supporting cylinder 6 is in contact with the inner wall of each arc-shaped plate 2; the outer cylinder 1, the positioning column 5 and the supporting cylinder 6 are coaxial. Wherein the positioning column 5 is shown in fig. 5, and the supporting cylinder 6 is shown in fig. 4.
Preferably, as shown in fig. 2, both wings of the outer wall of the arc-shaped plate 2 are provided with flexible pads 9. The flexible pad 9 may be made of a common flexible material such as rubber or sponge.
Preferably, the arc plate 2 and the corresponding chute 3 are in sliding fit through a sliding block or a sliding rail and the like.
Preferably, one end of the elastic member 4 is connected to the groove wall on the inner diameter side of the chute 3, and the other end is connected to the top side of the arc plate 2. The elastic member 4 preferably employs a spring that is always in tension to ensure that inward tension is always provided to the arcuate plate 2.
Example 2
On the basis of the embodiment 1, as shown in fig. 1 to 5, a first threaded through hole 7 is formed in the top of the outer barrel 1, a first external thread matched with the first threaded through hole 7 is formed on the outer wall of the positioning column 5, and the positioning column 5 is connected with the outer barrel 1 through threads. The support cylinder 6 is provided with a second threaded through hole 8, the second threaded through hole 8 is matched with the first external thread on the outer wall of the positioning column 5, and the support cylinder 6 is connected with the positioning column 5 through threads.
Wherein, first screw thread through-hole 7 and second screw thread through-hole 8 mutually suits to satisfy in the reference column 5 can screw in first screw thread through-hole 7 and second screw thread through-hole 8 simultaneously.
Example 3
The pile driving cap structure of the marine drilling platform riser pipe also comprises a disassembling tool matched with the embodiment 2, wherein the disassembling tool is shown in fig. 6 and comprises a telescopic rod 10 and a limiting piece 11 positioned at the upper end of the telescopic rod 10, and an external thread section 12 is arranged on the outer wall of the lower end of the telescopic rod 10; the top of the positioning column 5 is provided with a connecting hole 13, the inner wall of the connecting hole 13 is provided with an internal thread section 14 matched with the external thread section 12, and the threaded bottom end of the internal thread section 14 is provided with a positioning block 15. Wherein the limiting member 11 cannot pass through the first threaded through hole 7.
Preferably, the limiting member 11 is a handle.
Preferably, the positioning block 15 is fixed at the bottom end of the thread of the internal thread section 14, when the external thread section 12 rotates to the positioning block 15, the disassembling tool cannot rotate relative to the positioning column 5, and the disassembling tool can rotate along the screwing direction, namely, the positioning column 5 can be driven to rotate synchronously.
Of course, the screwing directions of the dismounting tool and the positioning column should be kept consistent in the embodiment.
Example 4
A method of piling an offshore rig riser, comprising:
adjusting gaps between the outer wall of each arc-shaped plate 2 and the inner wall of the outer cylinder 1 to enable the gaps to be equal to the wall thickness of the riser pipe to be piled;
buckling a pile driving cap at the top end of the riser pipe, and starting pile driving operation until the mud entering depth of the riser pipe reaches the design requirement;
and (5) removing the pile driving cap.
The method for adjusting the gap between the outer wall of each arc-shaped plate 2 and the inner wall of the outer cylinder 1 comprises the following steps:
selecting a supporting cylinder 6, and enabling the sum of the radius of the supporting cylinder 6 and the wall thickness of the arc-shaped plate 2 to be equal to the inner radius of the riser;
screwing the positioning column 5 into a second threaded through hole 8 on the supporting cylinder 6 to enable the supporting cylinder 6 to be in threaded fit with the positioning column 5;
the positioning column 5 and the supporting cylinder 6 are arranged between the arc plates 2 from bottom to top, the top end of the positioning column 5 enters a first threaded through hole 7 formed in the top of the outer cylinder 1, the positioning column 5 is screwed upwards, the positioning column 5 is in threaded fit with the top of the outer cylinder 1, and the top surface of the positioning column 5 is flush with the top surface of the outer cylinder 1.
In the method, in the process of loading the positioning column 5 and the supporting cylinder 6 between the arc plates 2, each arc plate 2 is limited, so that each arc plate 2 slides outwards in the corresponding chute 3 in the radial direction, and all the arc plates 2 are not contacted with the supporting cylinder 6; after the positioning column 5 is in threaded fit with the top of the outer cylinder 1, the restriction on each arc-shaped plate 2 is released.
In a more preferred embodiment, the method of removing the pile cap is:
the top of the positioning column 5 is connected with the dismounting tool;
the disassembly tool is screwed down, so that the positioning column 5 is separated from the threaded fit with the outer cylinder 1;
feeding down the dismounting tool until the supporting cylinder 6 is separated from the inner area of each arc-shaped plate 2, as shown in fig. 7;
the outer cylinder 1, the inner cylinder and the dismounting tool are taken out from the top end of the riser 16.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. In addition, the term "coupled" as used herein may be directly coupled or indirectly coupled via other components, unless otherwise indicated.
Claims (10)
1. The pile driving cap structure of the marine drilling platform riser comprises an outer barrel (1) and an inner barrel, and is characterized in that the inner barrel comprises a plurality of petal arc plates (2), a plurality of evenly distributed sliding grooves (3) are formed in the top surface of the inner part of the outer barrel (1), and the length direction of each sliding groove (3) is along the radial direction; the arc plates (2) are in one-to-one correspondence with the sliding grooves (3) and in sliding fit, elastic pieces (4) are connected between the arc plates (2) and the groove walls of the corresponding sliding grooves (3), the elastic pieces (4) are used for providing radial inward pulling force for the corresponding arc plates (2), and all the arc plates (2) can be spliced into a complete ring shape; the inner cylinder is characterized by further comprising a supporting device positioned in the inner cylinder, wherein the supporting device is used for being in contact with the inner wall of each arc-shaped plate (2).
2. The pile driving cap structure of the marine drilling platform riser according to claim 1, wherein the supporting device comprises a positioning column (5) connected with the outer barrel (1) and a supporting barrel (6) sleeved outside the positioning column (5), and the supporting barrel (6) is in contact with the inner wall of each arc-shaped plate (2); the outer cylinder (1), the positioning column (5) and the supporting cylinder (6) are coaxial.
3. The pile driving cap structure of the marine drilling platform riser pipe according to claim 2, wherein a first threaded through hole (7) is formed in the top of the outer barrel (1), first external threads matched with the first threaded through hole (7) are formed on the outer wall of the positioning column (5), and the positioning column (5) is connected with the outer barrel (1) through threads.
4. A pile driving cap structure of an offshore drilling platform riser according to claim 3, characterized in that the supporting cylinder (6) is provided with a second threaded through hole (8), the second threaded through hole (8) is matched with the first external thread on the outer wall of the positioning column (5), and the supporting cylinder (6) is connected with the positioning column (5) through threads.
5. The pile driving cap structure of the marine drilling platform riser according to claim 1, wherein flexible pads (9) are arranged on two wings of the outer wall of the arc-shaped plate (2).
6. A piling method of a pile driving cap structure based on the marine drilling platform riser according to any one of claims 1 to 5, comprising:
adjusting gaps between the outer wall of each arc-shaped plate (2) and the inner wall of the outer cylinder (1) to enable the gaps to be equal to the wall thickness of a riser pipe to be piled;
buckling a pile driving cap at the top end of the riser pipe, and starting pile driving operation until the mud entering depth of the riser pipe reaches the design requirement;
and (5) removing the pile driving cap.
7. Piling method according to claim 6, characterized in that the method of adjusting the gap between the outer wall of each arcuate plate (2) and the inner wall of the outer cylinder (1) comprises:
selecting a supporting cylinder (6), and enabling the sum of the radius of the supporting cylinder (6) and the wall thickness of the arc-shaped plate (2) to be equal to the inner radius of the riser;
screwing the positioning column (5) into a second threaded through hole (8) on the supporting cylinder (6), so that the supporting cylinder (6) is in threaded fit with the positioning column (5);
the positioning column (5) and the supporting cylinder (6) are arranged between the arc plates (2) from bottom to top, the top end of the positioning column (5) enters a first threaded through hole (7) formed in the top of the outer cylinder (1), the positioning column (5) is screwed upwards, the positioning column (5) is in threaded fit with the top of the outer cylinder (1), and the top surface of the positioning column (5) is flush with the top surface of the outer cylinder (1).
8. A method of piling as defined in claim 7, wherein,
in the process of loading the positioning column (5) and the supporting cylinder (6) between the arc plates (2), limiting each arc plate (2) to ensure that each arc plate (2) slides outwards in the radial direction in the corresponding sliding groove (3) and all the arc plates (2) are not contacted with the supporting cylinder (6);
after the positioning column (5) is in threaded fit with the top of the outer cylinder (1), the restriction on each arc-shaped plate (2) is released.
9. A method of driving a pile according to claim 7, characterised in that the method of removing the pile cap comprises:
the top of the positioning column (5) is connected with the positioning column by using a disassembling tool;
the positioning column (5) is separated from the threaded fit with the outer cylinder (1) by the downward screwing dismounting tool;
sending a disassembling tool downwards until the supporting cylinder (6) is separated from the inner area of each arc-shaped plate (2);
and (5) lifting, and taking out the outer cylinder (1) and the dismounting tool.
10. A piling method according to claim 9, wherein the disassembly tool used comprises a telescopic rod (10), a limiting piece (11) positioned at the upper end of the telescopic rod (10), and an external thread section (12) is arranged on the outer wall of the lower end of the telescopic rod (10); the connecting hole (13) is formed in the top of the positioning column (5), an inner thread section (14) matched with the outer thread section (12) is arranged on the inner wall of the connecting hole (13), and a positioning block (15) is arranged at the threaded bottom end of the inner thread section (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310521875.5A CN116289943B (en) | 2023-05-10 | 2023-05-10 | Pile driving cap structure of marine drilling platform riser and pile driving method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310521875.5A CN116289943B (en) | 2023-05-10 | 2023-05-10 | Pile driving cap structure of marine drilling platform riser and pile driving method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116289943A true CN116289943A (en) | 2023-06-23 |
| CN116289943B CN116289943B (en) | 2023-07-25 |
Family
ID=86781758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310521875.5A Active CN116289943B (en) | 2023-05-10 | 2023-05-10 | Pile driving cap structure of marine drilling platform riser and pile driving method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116289943B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116791555A (en) * | 2023-08-29 | 2023-09-22 | 西南石油大学 | Drilling platform pile shoe structure |
Citations (37)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB749652A (en) * | 1953-09-17 | 1956-05-30 | Arthur William Musk | An appliance for use in inserting stakes |
| GB1421862A (en) * | 1973-03-05 | 1976-01-21 | Hollandsche Betongroep Nv | Pile cap unit |
| NL7704561A (en) * | 1977-04-26 | 1978-10-30 | Koninkl Nederhorst Bouw B V | Pile driving cap with elastic buffer - has thin buffer between tapering tubes on common lengthwise axis |
| KR19980021389U (en) * | 1996-10-16 | 1998-07-15 | 박종도 | Shock absorbing cap for concrete pile driving |
| CN101929334A (en) * | 2009-06-25 | 2010-12-29 | 中国石油大学(北京) | Device and method for monitoring penetration of marine petroleum pipe and pile hammering-in method |
| CN102212994A (en) * | 2010-04-01 | 2011-10-12 | 中国海洋石油总公司 | Water separation guide pipe pile driving operation device for offshore drilling |
| CN202298621U (en) * | 2011-09-28 | 2012-07-04 | 上海柘中建设股份有限公司 | Tubular pile driving device |
| CN202865847U (en) * | 2012-09-13 | 2013-04-10 | 天津永生鑫和管桩有限公司 | Hit-replacing tool for tubular pile |
| CN103225302A (en) * | 2013-05-07 | 2013-07-31 | 中国石油大学(北京) | Six-wing piling cap for marine riser |
| CN103321227A (en) * | 2013-05-24 | 2013-09-25 | 中国海洋石油总公司 | Maritime waterproof conduit piling cap device |
| KR20130122215A (en) * | 2012-04-30 | 2013-11-07 | 주식회사 나루이엠에스 | Marine life procting method using pile cap and isolation dam |
| CN203307807U (en) * | 2013-05-07 | 2013-11-27 | 中国石油大学(北京) | Six-wing-structure pile follower for marine riser |
| CN203361152U (en) * | 2013-05-24 | 2013-12-25 | 中国海洋石油总公司 | Maritime waterproof guide pipe pile capping device |
| KR101375789B1 (en) * | 2013-03-29 | 2014-03-19 | 김화진 | Noise reduction device and driving pile structure using the noise reduction device |
| CN103669355A (en) * | 2012-09-13 | 2014-03-26 | 天津永生鑫和管桩有限公司 | Pad tool for pipe pile |
| CN204185858U (en) * | 2014-09-25 | 2015-03-04 | 中国二十冶集团有限公司 | A kind of tube pile construction driving helmet |
| KR20150105613A (en) * | 2014-03-07 | 2015-09-17 | (주)영구조엔지니어링 | The smart front end cap for adjusting phc file length and the method using thereof |
| CN204690750U (en) * | 2015-05-19 | 2015-10-07 | 中石化胜利建设工程有限公司 | A kind of tubular diesel hammer pile cover and Pile feeder |
| KR20150003787U (en) * | 2014-04-08 | 2015-10-16 | 이수일 | Safety cap for pile |
| KR20170000859U (en) * | 2015-08-28 | 2017-03-08 | 스왈록아시아 주식회사 | Cap for a pile |
| CN206752453U (en) * | 2017-03-16 | 2017-12-15 | 滨州学院 | A kind of hollow quincuncial pile pile cover of prefabricated reinforced concrete |
| CN207143947U (en) * | 2017-08-05 | 2018-03-27 | 江苏巨威机械有限公司 | Movable driving cap |
| CN207348052U (en) * | 2017-10-09 | 2018-05-11 | 吕依然 | A kind of adjustable building stake for being applied to building |
| KR20190036708A (en) * | 2017-09-28 | 2019-04-05 | 주식회사 포스코건설 | Temporary bent connecting steel pipe pile cap pressing against the pile |
| CN109826197A (en) * | 2019-03-13 | 2019-05-31 | 江苏科技大学 | The reducing pile cover structure of off-shore structure foundation pile |
| CN210002405U (en) * | 2019-03-13 | 2020-01-31 | 江苏科技大学 | Diameter-variable pile cap structure of foundation pile for offshore construction |
| CN110952556A (en) * | 2019-12-18 | 2020-04-03 | 广东力源液压机械有限公司 | Pile cap of pile hammer and diameter adaptive adjustment method thereof |
| CN211498850U (en) * | 2019-11-29 | 2020-09-15 | 安徽檀工建筑工程有限公司 | Anti-vibration device for offshore bridge pile foundation construction |
| CN112049111A (en) * | 2020-09-10 | 2020-12-08 | 山东鼎鲁建筑有限公司 | Piling device for building construction |
| CN212270929U (en) * | 2020-03-25 | 2021-01-01 | 无锡信仁通用机械有限公司 | Adjustable hydraulic hammer pile cap structure |
| CN212835352U (en) * | 2020-07-25 | 2021-03-30 | 广东万信建设工程科技有限公司 | Connecting structure of tubular pile and pile cap |
| CN213709526U (en) * | 2020-09-26 | 2021-07-16 | 张津浩 | Intelligence construction foundation pile fastener |
| CN113309096A (en) * | 2021-05-06 | 2021-08-27 | 中海油田服务股份有限公司 | Directional piling method and sleeve |
| CN214194539U (en) * | 2020-10-21 | 2021-09-14 | 广东精铟海洋工程股份有限公司 | Multifunctional hydraulic pile hammer holding device |
| CN214330562U (en) * | 2020-12-30 | 2021-10-01 | 江苏永维海工装备有限公司 | Supplementary well drilling riser pipe mud discharging device for ocean engineering |
| CN215211022U (en) * | 2021-05-30 | 2021-12-17 | 徐州基桩工程公司 | Movable pile driving replacing cap |
| CN215629954U (en) * | 2021-06-09 | 2022-01-25 | 中国铁建港航局集团有限公司 | Pile cap lining device and pile cap |
-
2023
- 2023-05-10 CN CN202310521875.5A patent/CN116289943B/en active Active
Patent Citations (37)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB749652A (en) * | 1953-09-17 | 1956-05-30 | Arthur William Musk | An appliance for use in inserting stakes |
| GB1421862A (en) * | 1973-03-05 | 1976-01-21 | Hollandsche Betongroep Nv | Pile cap unit |
| NL7704561A (en) * | 1977-04-26 | 1978-10-30 | Koninkl Nederhorst Bouw B V | Pile driving cap with elastic buffer - has thin buffer between tapering tubes on common lengthwise axis |
| KR19980021389U (en) * | 1996-10-16 | 1998-07-15 | 박종도 | Shock absorbing cap for concrete pile driving |
| CN101929334A (en) * | 2009-06-25 | 2010-12-29 | 中国石油大学(北京) | Device and method for monitoring penetration of marine petroleum pipe and pile hammering-in method |
| CN102212994A (en) * | 2010-04-01 | 2011-10-12 | 中国海洋石油总公司 | Water separation guide pipe pile driving operation device for offshore drilling |
| CN202298621U (en) * | 2011-09-28 | 2012-07-04 | 上海柘中建设股份有限公司 | Tubular pile driving device |
| KR20130122215A (en) * | 2012-04-30 | 2013-11-07 | 주식회사 나루이엠에스 | Marine life procting method using pile cap and isolation dam |
| CN202865847U (en) * | 2012-09-13 | 2013-04-10 | 天津永生鑫和管桩有限公司 | Hit-replacing tool for tubular pile |
| CN103669355A (en) * | 2012-09-13 | 2014-03-26 | 天津永生鑫和管桩有限公司 | Pad tool for pipe pile |
| KR101375789B1 (en) * | 2013-03-29 | 2014-03-19 | 김화진 | Noise reduction device and driving pile structure using the noise reduction device |
| CN103225302A (en) * | 2013-05-07 | 2013-07-31 | 中国石油大学(北京) | Six-wing piling cap for marine riser |
| CN203307807U (en) * | 2013-05-07 | 2013-11-27 | 中国石油大学(北京) | Six-wing-structure pile follower for marine riser |
| CN203361152U (en) * | 2013-05-24 | 2013-12-25 | 中国海洋石油总公司 | Maritime waterproof guide pipe pile capping device |
| CN103321227A (en) * | 2013-05-24 | 2013-09-25 | 中国海洋石油总公司 | Maritime waterproof conduit piling cap device |
| KR20150105613A (en) * | 2014-03-07 | 2015-09-17 | (주)영구조엔지니어링 | The smart front end cap for adjusting phc file length and the method using thereof |
| KR20150003787U (en) * | 2014-04-08 | 2015-10-16 | 이수일 | Safety cap for pile |
| CN204185858U (en) * | 2014-09-25 | 2015-03-04 | 中国二十冶集团有限公司 | A kind of tube pile construction driving helmet |
| CN204690750U (en) * | 2015-05-19 | 2015-10-07 | 中石化胜利建设工程有限公司 | A kind of tubular diesel hammer pile cover and Pile feeder |
| KR20170000859U (en) * | 2015-08-28 | 2017-03-08 | 스왈록아시아 주식회사 | Cap for a pile |
| CN206752453U (en) * | 2017-03-16 | 2017-12-15 | 滨州学院 | A kind of hollow quincuncial pile pile cover of prefabricated reinforced concrete |
| CN207143947U (en) * | 2017-08-05 | 2018-03-27 | 江苏巨威机械有限公司 | Movable driving cap |
| KR20190036708A (en) * | 2017-09-28 | 2019-04-05 | 주식회사 포스코건설 | Temporary bent connecting steel pipe pile cap pressing against the pile |
| CN207348052U (en) * | 2017-10-09 | 2018-05-11 | 吕依然 | A kind of adjustable building stake for being applied to building |
| CN109826197A (en) * | 2019-03-13 | 2019-05-31 | 江苏科技大学 | The reducing pile cover structure of off-shore structure foundation pile |
| CN210002405U (en) * | 2019-03-13 | 2020-01-31 | 江苏科技大学 | Diameter-variable pile cap structure of foundation pile for offshore construction |
| CN211498850U (en) * | 2019-11-29 | 2020-09-15 | 安徽檀工建筑工程有限公司 | Anti-vibration device for offshore bridge pile foundation construction |
| CN110952556A (en) * | 2019-12-18 | 2020-04-03 | 广东力源液压机械有限公司 | Pile cap of pile hammer and diameter adaptive adjustment method thereof |
| CN212270929U (en) * | 2020-03-25 | 2021-01-01 | 无锡信仁通用机械有限公司 | Adjustable hydraulic hammer pile cap structure |
| CN212835352U (en) * | 2020-07-25 | 2021-03-30 | 广东万信建设工程科技有限公司 | Connecting structure of tubular pile and pile cap |
| CN112049111A (en) * | 2020-09-10 | 2020-12-08 | 山东鼎鲁建筑有限公司 | Piling device for building construction |
| CN213709526U (en) * | 2020-09-26 | 2021-07-16 | 张津浩 | Intelligence construction foundation pile fastener |
| CN214194539U (en) * | 2020-10-21 | 2021-09-14 | 广东精铟海洋工程股份有限公司 | Multifunctional hydraulic pile hammer holding device |
| CN214330562U (en) * | 2020-12-30 | 2021-10-01 | 江苏永维海工装备有限公司 | Supplementary well drilling riser pipe mud discharging device for ocean engineering |
| CN113309096A (en) * | 2021-05-06 | 2021-08-27 | 中海油田服务股份有限公司 | Directional piling method and sleeve |
| CN215211022U (en) * | 2021-05-30 | 2021-12-17 | 徐州基桩工程公司 | Movable pile driving replacing cap |
| CN215629954U (en) * | 2021-06-09 | 2022-01-25 | 中国铁建港航局集团有限公司 | Pile cap lining device and pile cap |
Non-Patent Citations (1)
| Title |
|---|
| 程仲;牟小军;马英文;刘正礼;程昆;李晓刚;: "隔水导管打桩新技术研究与应用", 中国海上油气, no. 04 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116791555A (en) * | 2023-08-29 | 2023-09-22 | 西南石油大学 | Drilling platform pile shoe structure |
| CN116791555B (en) * | 2023-08-29 | 2023-11-17 | 西南石油大学 | Drilling platform pile shoe structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116289943B (en) | 2023-07-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108386146B (en) | Casing head and annulus sealing device running tool for deep water drilling and use method thereof | |
| CN116289943B (en) | Pile driving cap structure of marine drilling platform riser and pile driving method thereof | |
| US10113375B2 (en) | Thread compensation apparatus | |
| US8496409B2 (en) | Marine riser tensioner | |
| CA2677247C (en) | Casing running and drilling system | |
| US7997333B2 (en) | Segmented bottom guide for string elevator assembly | |
| US4024718A (en) | Subsea cable apparatus and method of handling same | |
| US7395855B2 (en) | Radially moving slips | |
| EP3674512B1 (en) | Unscrewing device for pressure-maintaining cover of submarine natural gas hydrate pressure-maintaining core barrel | |
| RU2560460C2 (en) | Device and methods of control over tubular elements | |
| EP3292266B1 (en) | Blowout-preventer-stack one-trip test tool and method | |
| US8657536B2 (en) | Tensioning a riser | |
| WO2016089478A1 (en) | System, apparatus, and method for dual-activity drilling | |
| NO762925L (en) | GRIPE DEVICE. | |
| NO342647B1 (en) | Method and system for connecting inner and outer wellhead housing | |
| US7832480B1 (en) | Apparatus and method for extracting a tubular string from a bore hole | |
| NO312422B1 (en) | Method of installing a shoulder ring in a wellhead housing, as well as setting tools for carrying out the method | |
| CN113494259A (en) | Coiled tubing suspension device, coiled tubing wellhead mandrel type suspension structure and method | |
| WO2010065993A1 (en) | Removal/fitting of subsea sealing plug(s) | |
| AU2012227158A1 (en) | Centralizer | |
| NO20121433A1 (en) | CONTROL CABLE PROTECTION | |
| AU2011202591B2 (en) | Flush mounted spider | |
| US9309729B2 (en) | Device and method for clamping a top drive saver sub | |
| CN219864939U (en) | Well cementation mechanism convenient to detach | |
| CN105888593B (en) | A kind of steel wire rope feeder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |