CN113998056A - Expansion type anchoring pile fastening device for ocean oil and gas platform - Google Patents
Expansion type anchoring pile fastening device for ocean oil and gas platform Download PDFInfo
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- CN113998056A CN113998056A CN202110196418.4A CN202110196418A CN113998056A CN 113998056 A CN113998056 A CN 113998056A CN 202110196418 A CN202110196418 A CN 202110196418A CN 113998056 A CN113998056 A CN 113998056A
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- pile body
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- 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
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
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- 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
- B63B21/24—Anchors
- B63B21/26—Anchors securing to bed
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- 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
- B63B21/24—Anchors
- B63B21/30—Anchors rigid when in use
- B63B21/34—Anchors rigid when in use with two or more flukes
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- 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
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
- B63B2021/505—Methods for installation or mooring of floating offshore platforms on site
Abstract
The utility model provides an inflation formula ocean oil and gas platform anchor mooring stake bolt device, includes: anchoring pile bolts and pile driving tools; the anchoring pile bolt is provided with a anchoring rope, a steel rod positioning hole, a pile body, a pile claw and a pile head, wherein one end of the anchoring rope is connected with the ocean oil and gas platform, the other end of the anchoring rope is connected with the pile body of the anchoring pile bolt, and the periphery of the pile body close to the upper end side is provided with a ring groove wound with the anchoring rope; the pile body is formed by a circular steel structure, the outer circumferential surface of the pile body is provided with a surface structure, and the surface structure on the outer circumferential surface improves the firmness of the pile body when the pile body is installed on the seabed; the upper part of the piling tool is a heavy hammer, the heavy hammer can use an iron block, and a plurality of grooves are formed in the lower end face of the heavy hammer along the radial direction; and one end of the pile driving tool is flexibly connected with the sling, and the other end of the pile driving tool is rigidly connected with the positioning steel rod, wherein one end of the sling is connected with the winch on the ship, and the other end of the sling is connected with the heavy hammer of the pile driving tool.
Description
Technical Field
The invention belongs to the technical field of ocean energy, relates to a large ocean oil and gas platform anchoring pile fastening device, and particularly relates to an expansion type ocean oil and gas platform anchoring pile fastening device.
Background
The rapid development of the world economy brings about a large consumption of energy, and the petroleum and natural gas are still the current main energy sources. The oil and gas reserves in the world are rapidly decreased nowadays, and the problem of onshore oil resource shortage is highlighted. The ocean is not only the space on which the human lives, but also important natural resources and production data in the production of the human society, and the development of the human society cannot separate the development and utilization of the ocean resources. Therefore, we must march to the ocean and vigorously develop ocean oil and gas resources.
Oceans contain abundant petroleum and natural gas resources, including traditional offshore oil fields, natural gas fields, and emerging natural compound resources. Over the last 20 years, the world's oil production has grown primarily as a result of marine natural gas exploration and development. With the gradual depletion of land conventional oil and gas resources, the marine oil and gas resources, compact oil and gas resources and shale oil and gas resources are taken as next-step alternative energy sources in China, wherein the marine oil and gas resources gradually become main resources for oil and gas exploration and development. In 2010, the marine oil and gas yield in China exceeds 5000 million tons, currently exceeds 1 hundred million tons, and the main development unit is the China general marine oil and gas company and also is a part of China oil and gas group companies and medium petrochemical industry group companies.
China is a big ocean, vast sea areas contain rich oil and gas resources, and the amount of the ocean oil and gas resources in China accounts for 25-30% of the total amount of the oil and gas resources in the world. In the land area of oceanic countries of about 300 square kilometers in China, the offshore continental shelf accounts for about 130 square kilometers, the area of an oil-gas-containing basin in the continental shelf sea area is about 70 square kilometers, 6 large oil-gas basin fields such as a Bohai sea, a North gulf, a Yingqiong, a south yellow sea and an east sea are mainly distributed offshore, the content of oil resources reaches 275 hundred million tons, and the content of natural gas reaches 10.6 hundred million cubic meters. Particularly, abundant oil and gas resources are buried in deep sea areas of south China sea, and according to incomplete statistics, the oil and gas geological resource amount of the whole south China sea accounts for 1/3 of the total oil and gas resource amount of China, wherein the oil resource amount is about 230 plus 300 million tons, and the natural gas resource amount is about 16 million cubic meters, and the oil and gas geological students at home and abroad are considered as an oil treasury.
The utilization of marine oil and gas resources requires an offshore platform for exploration and exploitation. Ocean drilling platforms, ocean production platforms and offshore life platforms are work bases and large ocean structures for oil and gas development, and play important basic roles in the aspect of developing ocean oil and gas resources. Offshore oil platforms are generally classified into pile-based jacket platforms, fixed gravity platforms, compliant platforms, bottom-set drilling platforms, tension leg platforms, and the like. The offshore oil industry in China has gone through the development process for more than 50 years, and particularly after the marine general companies in China are established, the technology breakthrough from cooperative development to autonomous development has the technical capability of autonomously developing offshore oil and gas fields with the water depth within 200111. At present, 45 offshore oil and gas fields are built in China, 93 fixed platforms are built, and the production capacity of 3900 ten thousand tons is formed.
In order to meet the increasing energy demand, the advanced countries in the world all put the emphasis on oil and gas resource development to the deep sea, and the deep sea oil platform has become a hotspot of international ocean engineering research and development, and mainly presents two major development trends: the development is towards water and ultra-deep water. With the acceleration of oil and gas development and the extension to deep water and ultra-deep water, the research and development of the ocean oil and gas platform presents a flourishing scene, and a new generation and an updated generation of working water depth and drilling depth continuously create records. Secondly, the development is towards large-scale. With the rapid development of ocean engineering science and technology, the ocean oil and gas platform has a large-scale development trend so as to increase the safe, reliable and all-weather working capacity and long-time self-sustaining capacity of operation.
The anchoring system is an indispensable component of an offshore oil and gas platform, particularly a floating type platform, and the reliability of the system is extremely important. The anchor is of various types, and the high holding power anchor is commonly used for the ocean oil and gas platform. The anchor is mainly characterized in that the holding power of the anchor can be ensured only when the pulling force is in the horizontal direction, and if the pulling force has component force in the vertical direction, the holding power is reduced, and the anchor can be pulled out. There are studies showing that the grip begins to decrease 6 degrees in shank direction and the grip decreases significantly with 12 degrees in shank rotation. Therefore, the lower end of the chain must be tangent to the sea floor when anchoring, otherwise there is a risk of anchor walking. When the anchor is lifted, the anchor chain is pulled upwards to lift the anchor handle, the anchor loses holding power, and finally the anchor breaks the ground to come out. With the development of the ocean oil and gas platform towards deep water and large-scale direction, firstly, the requirement on the holding power of the anchor is higher and higher, secondly, the required anchor chain is longer and longer, and a new device method is urgently needed to replace.
The invention provides an expansion type anchoring pile bolt device for an ocean oil and gas platform, aiming at the existing outstanding problems, firstly, the device solves the requirement of a large oil and gas exploitation platform on the holding force of anchoring, secondly, the device also solves the problem of overlong anchor chains caused by the fact that anchor chains are tangent to the sea bottom, and can better adapt to the requirement of the ocean oil and gas platform for developing towards deep water and large-scale direction.
Disclosure of Invention
The technical problems to be solved or the technical effects to be achieved by the invention are as follows: with the development of the ocean oil and gas platform towards deep water and large-scale direction, firstly, the requirement on the holding power of the anchor is higher and higher, secondly, the required anchor chain is longer and longer, and a new device method is urgently needed to replace. The invention provides an expansion type anchoring pile fastening device for an ocean oil and gas platform, which aims at solving the problem that a large oil and gas exploitation platform has the requirement on the holding power of anchoring, solves the problem that anchor chains are required to be tangent to the seabed to cause overlong anchor chains, has the characteristics of simple and detailed facilities, convenience in operation, large working water depth, flexibility in movement and the like, and can better adapt to the requirement of the ocean oil and gas platform for developing towards deep water and large-scale directions.
Solution for solving the technical problem: the invention provides an expansion type anchoring pile bolt device for an ocean oil and gas platform, which comprises two parts, namely a pile driving tool and an anchoring pile bolt, wherein the pile driving tool mainly comprises a sling, a heavy hammer, a positioning steel rod and the like, and the anchoring pile bolt mainly comprises a rope, a steel rod positioning hole, a pile body, a pile claw, a pile head and the like. In brief, after the anchor pile is driven into the seabed, when the rope on the anchor pile is pulled outwards, the pile claw is continuously expanded under the action of geological resistance, the larger the outward pulling force is, the larger the expansion force of the pile claw is, the larger the resistance on the pile claw is, and at the moment, the anchor pile can not be pulled out, so that the anchoring effect is achieved.
Specifically, the anchoring pile bolt device of the invention comprises: anchoring pile bolt, pile driving tool, anchoring rope, steel rod positioning hole, pile body, pile claw and pile head. The mooring rope is used for mooring an ocean oil and gas platform, one end of the mooring rope is connected with the ocean oil and gas platform, and the other end of the mooring rope is connected with a pile body of the mooring pile bolt. The periphery of the pile body close to the upper end side is provided with a ring groove wound with a mooring rope.
The pile body is integrally formed by a circular steel structure, and the outer circumferential surface of the pile body is provided with a surface structure. After the pile body is driven into the seabed, the surface structure on the outer circumferential surface is arranged, so that silt can be favorably infiltrated into the surface of the pile body, and the firmness of the pile body installed on the seabed is improved. The length and the thickness of the pile body are determined according to the size of the ocean oil and gas platform and the operating water depth. And a steel plate is arranged at the top end of the pile body and is used for receiving the impact force of the piling tool, so that the pile body is not damaged under the impact of the piling tool.
And a positioning steel pipe matched with the positioning steel rod is further installed in the middle of the pile body, the positioning steel pipe of the pile body comprises a positioning hole, and the positioning hole is formed in the steel pipe. The positioning hole can also be formed directly in the pile body, such as by drilling. The size of the positioning hole is matched with the positioning steel rod.
The outer circumference of the pile body is provided with a pile claw. Wherein, the pile claw is movably connected with the pile body, such as hinged connection and ball connection. And is driven into the seabed along with the pile body. When the rope on the mooring pile is pulled outwards, the pile claw is continuously expanded under the action of geological resistance, the larger the outward pulling force is, the larger the expansion force of the pile claw is, the larger the resistance on the pile claw is, and at the moment, the anchoring pile bolt can not be pulled out, so that the anchoring effect is improved.
And a pile head is arranged at the lower end of the pile body and is made of tool steel. The pile head is conical in shape, wherein the conical tip faces the seabed, so that the whole anchoring pile bolt device is driven into the seabed conveniently.
The anchoring pile bolt device also comprises a pile driving tool for impacting the anchoring pile bolt into the seabed, and the upper part of the pile driving tool is a heavy hammer. The weight can be made of iron blocks, and the weight is determined according to the size of the anchoring pile bolt and the driving depth of the anchoring pile bolt into the seabed in order to ensure the piling effect. A plurality of grooves are arranged on the lower end surface of the heavy hammer along the radial direction; and one end of the piling tool is flexibly connected with the sling, and the other end of the piling tool is rigidly connected with the positioning steel rod.
The lower part of the piling tool is a positioning steel rod. The positioning steel rod can be made of steel pipes or iron rods, and the length of the positioning steel rod is determined according to the length of the anchoring pile bolt. One end of the positioning steel rod is rigidly connected with the heavy hammer, and the other end of the positioning steel rod is inserted into the positioning hole of the anchoring pile bolt so as to ensure that the heavy hammer impacts the top of the anchoring pile bolt.
When the location steel pole was made through the steel pipe, the hole of steel pipe and a plurality of recesses intercommunication on the weight to when avoiding the pile, the influence of water pressure to the impact force of weight. When the positioning steel rod is manufactured through a non-hollow iron rod, a plurality of grooves are formed in the peripheral surface of the positioning steel rod along the axial direction, and radial symmetrical long grooves are selected, wherein the long grooves extend to the upper end and the lower end of the positioning steel rod. The radially symmetrical long grooves are communicated with the grooves on the heavy hammer.
The heavy punch and the pile body are further provided with a pair of connected bayonets, the heavy punch and the pile body are connected through an elastic rope, the length of the elastic rope is set to ensure that the positioning steel rod is inserted into the positioning hole, and the positioning steel rod does not fall off in the working process.
The invention also discloses a system and a working method of the anchoring pile fastening device, which comprises the following steps:
s1, sea state investigation: according to the requirement of ocean oil and gas exploitation, the sea area where an ocean oil and gas platform is to be arranged is investigated, and the conditions of water depth, ocean current, waves, bottom materials and the like are determined.
S2, anchoring design: after the sea condition is mastered, the parameters of the anchoring pile bolt are designed according to the main scale of the ocean oil and gas platform. The direction of the acting force of wind, wave and flow is fully analyzed, the head of the platform is anchored well in the direction facing the wind, wave and flow preferentially, and then the mooring rope is pulled to anchor in a radial manner in all directions, so that the platform is ensured to be in a good stress state and good stability. To improve the holding capacity, pretension is required in use, i.e. one and the same pretension is applied to each anchor pile in the system. The larger the pretension is, the larger the restoring force of the positioning system is, the strong ability of resisting deviation is, and the horizontal displacement of the platform caused by wind and wave is small.
S3, pile driving operation: the length of the sling of the piling tool is determined according to the water depth, one end of the sling is connected to the winch, and the other end of the sling is connected to the heavy hammer. The positioning steel rod under the heavy hammer is inserted into the positioning hole of the pile body, so that the heavy hammer, the positioning steel rod and the anchoring pile bolt are synchronously inserted into the sea bottom by inertia, and then the heavy hammer is continuously pulled, under the action of the elastic rope, the positioning steel rod cannot leave the positioning hole of the pile body, and then the heavy hammer is put down. The anchoring pile is driven into the seabed by the impact force of the heavy hammer, and when the heavy hammer is confirmed to be driven into the seabed, the pile body is driven into the seabed.
Drawings
FIG. 1 is a front view of an inflatable marine oil and gas platform mooring peg arrangement;
FIG. 2 is an exploded view of an inflatable marine oil and gas platform mooring peg arrangement;
FIG. 3 is a cross-sectional view of an expanded marine oil and gas platform mooring peg arrangement;
FIG. 4 is a schematic illustration of a piling tool of an expandable marine oil and gas platform mooring peg arrangement;
FIG. 5 is a schematic view of an expansion type marine oil and gas platform mooring peg fixing platform.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the embodiments of the present invention are described below with the aid of the accompanying drawings; it is to be expressly understood that the following drawings are illustrative of some embodiments of the invention and are not intended as a definition of the limits of the invention.
As shown in fig. 1 to 4, the anchoring pile bolt device of the present invention comprises: the anchoring pile bolt 10, the pile driving tool 20, the anchoring rope 11, the steel rod positioning hole 12, the pile body 13, the pile claw 14 and the pile head 15. Wherein, the mooring rope 11 is used for mooring the offshore oil and gas platform P, one end of the mooring rope 11 is connected with the offshore oil and gas platform P, and the other end of the mooring rope 11 is connected with the pile body 13 of the mooring pile bolt 10. The periphery of the pile body 13 near the upper end side is provided with a ring groove wound with a mooring rope 11.
The pile body 13 is formed of a circular steel structure as a whole, and a surface structure, specifically, a pattern structure 16 or a blade structure 17 (only the same position as the pattern structure 16 is shown in the drawing) is provided on the outer circumferential surface of the pile body 13. After the pile body 13 is driven into the seabed, the surface structure on the outer circumferential surface is arranged, so that silt can be favorably infiltrated into the surface of the pile body 13, and the firmness of the pile body 13 when being installed on the seabed is improved. The length and the thickness of the pile body 13 are determined according to the size of the ocean oil and gas platform P and the operating water depth.
Further, a steel plate 19 is installed at the top end of the pile body 13 for receiving the impact force of the pile driving tool 20, so that the pile body 13 does not damage the pile body under the impact of the pile driving tool 20. The steel plate 19 is provided in a ring shape and is fixedly provided around the circumference of the end surface of the pile body 13.
In order to ensure that the piling tool 20 can accurately strike the top end of the pile body 13, a positioning steel pipe 18 matched with a positioning steel rod 22 is further installed in the middle of the pile body 13, and the steel rod positioning hole 12 is included in the positioning steel pipe 18 of the pile body 13. Wherein the positioning steel pipe 18 may be made of a steel pipe, and the steel rod positioning hole 12 is formed inside the steel pipe 18. The steel rod positioning hole 12 can also be formed directly inside the pile body 13, such as by drilling. The steel rod locating hole 12 is sized to mate with the locating steel rod 22, specifically with a clearance fit, to ensure that the driving tool 20 impacts the top of the anchoring pile bolt assembly 10. The steel rod positioning hole 12 is coincident with the axis of the pile body 13, is arranged in the pile body 13 and is shorter than the pile body 13.
A pile claw 14 is provided on the outer circumferential portion of the pile body 13. The pile claw 14 is movably connected with the pile body 13, and specifically, the pile claw 14 and the pile body 13 can be hinged together through a pin or connected together through a ball-and-socket structure and driven into the seabed along with the pile body 13. When the rope on the mooring pile is pulled outwards, the pile claw is continuously expanded under the action of geological resistance, the larger the outward pulling force is, the larger the expansion force of the pile claw 14 is, the larger the resistance on the pile claw 14 is, and at the moment, the anchoring pile bolt 10 cannot be pulled out, so that the anchoring effect is improved.
A pile head 15 is mounted at the lower end of the pile body 13, and the pile head 15 is made of tool steel. The upper end of the pile head 15 is connected to the pile body 13 and the lower end of the pile head is used to strike the seabed under the impact of the piling tool 20. The pile head 15 is conical in shape with the conical tip facing the seabed to facilitate driving the entire anchoring pile plug assembly 10 into the seabed.
The anchoring pile-bolt device of the present invention further comprises a piling tool 20 for hammering the anchoring pile into the sea bottom, and a weight 21 is provided at the upper portion of the piling tool 20. The weight 21 may be made of iron, and its weight is determined by the size of the anchoring pile bolt 10 and the depth of driving into the sea bottom in order to ensure the piling effect. A plurality of grooves 24 are arranged on the lower end surface of the heavy hammer along the radial direction; the piling tool 20 has one end flexibly connected to the sling 23 and the other end rigidly connected to the positioning steel rod. The sling 23 may be a steel wire or a rope, wherein one end of the sling 23 is connected to a winch on the vessel and the other end is connected to the weight 21 of the piling tool 20.
The lower portion of the piling tool 20 is a locating steel rod 22. The positioning steel rod 22 may be made of steel pipe or iron rod, and its length is determined according to the length of the anchoring pile bolt 10. One end of the positioning steel rod 22 is rigidly connected with the heavy hammer 21, and the other end is inserted into the positioning hole of the anchoring pile bolt 10 to ensure that the heavy hammer impacts on the top of the anchoring pile bolt.
When the positioning steel rod 22 is made of a steel pipe, the inner hole 25 of the steel pipe is communicated with the plurality of grooves 24 on the weight, so that the impact of the water pressure on the weight 21 during piling is avoided. When the positioning steel rod 22 is made of a non-hollow iron rod, a plurality of grooves, optionally radially symmetrical long grooves 26, are formed on the outer circumferential surface of the positioning steel rod 22 along the axial direction, wherein the long grooves 26 extend to the upper and lower ends of the positioning steel rod 22. The radially symmetrical elongated slots 26 communicate with the grooves 24 on the weight 21.
A pair of connecting bayonets 27 are further provided on the weight 21 and the pile body 13, wherein the weight 21 and the pile body 13 are connected by an elastic rope 28, wherein the length of the elastic rope 28 is set to ensure that the positioning steel rod is inserted into the positioning hole, and the positioning steel rod 22 does not fall off during the operation.
Referring to fig. 1-5, the present invention also discloses a system and a working method of the anchoring pile bolt device, comprising the following steps:
s1, sea state investigation: according to the requirement of ocean oil and gas exploitation, the sea area where an ocean oil and gas platform is to be arranged is investigated, and the conditions of water depth, ocean current, waves, bottom materials and the like are determined.
S2, anchoring design: after the sea state is mastered, the anchoring pile bolt 10 is designed according to the major dimension of the ocean oil and gas platform. The directions of the acting forces of wind, wave and flow are fully analyzed, the head of the platform is anchored in the direction facing the wind, wave and flow preferentially, and then the mooring rope 11 is pulled to anchor in a radial manner in all directions, so that the platform is ensured to be in a good stress state and good stability. Generally, the rectangular platform mooring peg 10 is designed to be 8 and the triangular platform mooring peg is designed to be 9, depending on the platform shape. To improve the holding capacity, pretension is required in use, i.e. one and the same pretension is applied to each anchor pile in the system. The larger the pretension is, the larger the restoring force of the positioning system is, the strong ability of resisting deviation is, and the horizontal displacement of the platform caused by wind and wave is small.
S3, pile driving operation: the length of the sling of the piling tool is determined according to the water depth, one end of the sling is connected to the winch, and the other end of the sling is connected to the heavy hammer. The positioning steel rod 22 under the weight 21 is inserted into the steel rod positioning hole 12 of the pile body 13, so that the weight, the positioning steel rod 22 and the anchoring pile bolt 10 are synchronously inserted into the seabed by inertia, and then the positioning steel rod 22 cannot leave the steel rod positioning hole 12 of the pile body 13 under the action of the elastic rope 28 by continuously pulling the weight 21, and then the weight 21 is placed. The anchoring pile 10 is driven into the seabed by the impact force of the weight 21, and when it is confirmed that the weight 21 is driven into the seabed, it is known that the pile body 13 is driven into the seabed.
The principle and the implementation mode of the invention are explained by applying the specific embodiments, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. This summary should not be construed to limit the present invention.
Claims (10)
1. The utility model provides an inflation formula ocean oil and gas platform anchor mooring stake bolt device, includes: a mooring pile bolt (10), a piling tool (20);
the marine oil-gas anchor is characterized in that the anchoring pile bolt (10) is provided with a anchoring rope (11), a steel rod positioning hole (12), a pile body (13), a pile claw (14) and a pile head (15), wherein one end of the anchoring rope (11) is connected with an ocean oil-gas platform (P), the other end of the anchoring rope (11) is connected with the pile body (13) of the anchoring pile bolt (10), and the periphery of the pile body (13) close to the upper end side is provided with a ring groove wound with the anchoring rope (11); the pile body (13) is made of a circular steel structure, a surface structure is arranged on the outer circumferential surface of the pile body (13), and the surface structure on the outer circumferential surface is beneficial to the infiltration of silt into the surface of the pile body (13), so that the firmness of the pile body (13) when being installed on the seabed is improved;
wherein, the upper part of the piling tool (20) is a heavy hammer (21), the heavy hammer (21) can use an iron block, and a plurality of grooves (24) are arranged on the lower end surface of the heavy hammer along the radial direction; and one end of the piling tool (20) is flexibly connected with a sling (23), and the other end of the piling tool is rigidly connected with the positioning steel rod, wherein one end of the sling (23) is connected with a winch on the ship, and the other end of the sling (23) is connected with a heavy hammer (21) of the piling tool (20).
2. The expansion type anchoring pile bolt device for the offshore oil and gas platform as claimed in claim 1, wherein: the top end of the pile body (13) is provided with a steel plate (19) which is used for receiving the impact force of the piling tool (20), so that the pile body (13) does not damage the pile body under the impact of the piling tool (20).
3. The expansion type anchoring pile bolt device for the offshore oil and gas platform as claimed in claim 1, wherein: and a positioning steel pipe (18) matched with the positioning steel rod (22) is further installed in the middle of the pile body (13), and the positioning steel pipe (18) of the pile body (13) comprises a steel rod positioning hole (12).
4. An inflatable marine oil and gas platform mooring peg arrangement as claimed in any one of claims 1-3, wherein: the pile claw (14) is arranged on the outer circumferential part of the pile body (13), and the pile claw (14) is movably connected with the pile body (13).
5. The expansion type anchoring pile bolt device for the offshore oil and gas platform as claimed in claim 4, wherein: the movable connection is hinged through a pin or connected through a ball-and-socket structure.
6. An inflatable marine oil and gas platform mooring peg arrangement as claimed in any one of claims 1-3, wherein: the pile head (15) is made of tool steel, and the shape of the pile head (15) is conical.
7. The expansion type anchoring pile bolt device for the offshore oil and gas platform as claimed in claim 1, wherein: the upper part of the piling tool (20) is provided with a heavy hammer (21); a plurality of grooves (24) are arranged on the lower end surface of the heavy hammer along the radial direction; one end of the piling tool (20) is flexibly connected with a sling (23), and the other end is rigidly connected with a positioning steel rod (22); the heavy hammer (21) and the pile body (13) are further provided with a pair of connected bayonets (27), the heavy hammer (21) and the pile body (13) are connected through an elastic rope (28), and the length of the elastic rope (28) is set to ensure that the positioning steel rod is inserted into the positioning hole.
8. The expansion type anchoring pile bolt device for the offshore oil and gas platform as claimed in claim 7, wherein: the positioning steel rod (22) is made of steel pipes, and inner holes (25) of the steel pipes are communicated with the grooves (24) on the heavy hammer.
9. The expansion type anchoring pile bolt device for the offshore oil and gas platform as claimed in claim 7, wherein: the positioning steel rod (22) is made of a non-hollow iron rod, radially symmetrical long grooves (26) are formed in the peripheral surface of the positioning steel rod (22) along the axial direction, the long grooves (26) extend to the upper end and the lower end of the positioning steel rod (22), and the radially symmetrical long grooves (26) are communicated with the grooves (24) in the heavy hammer (21).
10. A method of operating a mooring peg arrangement having an inflatable marine oil and gas platform mooring peg arrangement according to any one of claims 1-9, wherein:
s1, sea state investigation: according to the requirement of ocean oil and gas exploitation, surveying the sea area where an ocean oil and gas platform is to be arranged, and determining the conditions of water depth, ocean current, waves and bottom materials;
s2, anchoring design: after mastering sea conditions, designing the anchoring pile bolt (10) according to the main dimension of the ocean oil and gas platform; the direction of the acting force of wind, wave and flow is fully analyzed, the head of the platform is anchored well in the direction facing the wind, wave and flow preferentially, and then the anchoring rope (11) is pulled to anchor in a radial shape in all directions, so that the platform is ensured to be in a good stress state and good stability; according to the arrangement of the platform shape, 8 anchoring pile bolts (10) of the rectangular platform are designed, and 9 anchoring pile bolts of the triangular platform are designed; pretension is required in use, i.e. one and the same pretension is applied to each anchor pile in the system;
s3, pile driving operation: the length of a sling of the piling tool is determined according to the water depth, one end of the sling is connected to the winch, and the other end of the sling is connected to the heavy hammer; inserting a positioning steel rod (22) below a heavy hammer (21) into a steel rod positioning hole (12) of a pile body (13), synchronously inserting the heavy hammer, the positioning steel rod (22) and a mooring pile bolt (10) into the sea bottom by inertia, continuously pulling the heavy hammer (21), enabling the positioning steel rod (22) not to leave the steel rod positioning hole (12) of the pile body (13) under the action of an elastic rope (28), and then putting down the heavy hammer (21); the anchoring pile bolt (10) is driven into the seabed by the impact force of the heavy hammer (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110196418.4A CN113998056B (en) | 2021-02-22 | 2021-02-22 | Expansion type ocean oil gas platform anchoring pile tying device |
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| US20220315169A1 (en) * | 2019-08-12 | 2022-10-06 | Sustainable Marine Energy Limited | Fixation device and installation method |
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