CN113998056B - Expansion type ocean oil gas platform anchoring pile tying device - Google Patents
Expansion type ocean oil gas platform anchoring pile tying device Download PDFInfo
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- CN113998056B CN113998056B CN202110196418.4A CN202110196418A CN113998056B CN 113998056 B CN113998056 B CN 113998056B CN 202110196418 A CN202110196418 A CN 202110196418A CN 113998056 B CN113998056 B CN 113998056B
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Classifications
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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
An expansion type offshore oil and gas platform anchoring pile bolt device, comprising: anchoring the pile bolt and piling 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 marine oil-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, which is close to the upper end side, is provided with a ring groove around which the anchoring rope is wound; the pile body is composed of a round steel structure, a surface structure is arranged on the outer circumferential surface of the pile body, 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, an iron block can be used as the heavy hammer, and a plurality of grooves are formed in 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 one end of the sling is rigidly connected with the positioning steel rod, wherein one end of the sling is connected with the ship winch, and the other end of the sling is connected with the heavy hammer of the piling 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 tying device, and particularly relates to an expansion ocean oil and gas platform anchoring pile tying device.
Background
The world economy is rapidly developing to consume a great deal of energy, and petroleum and natural gas are still the main energy sources at present. The oil and gas reserves in the current world are rapidly decreased, and the shortage problem of land petroleum resources is increasingly outstanding. The ocean is not only a space for human to live, but also important natural resources and production data in the production of human society, and development of the human society is not separated from development and utilization of ocean resources. Therefore, we have to enter the ocean to develop ocean oil and gas resources.
The ocean is rich in oil and gas resources, including traditional offshore oil fields, natural gas fields and emerging natural compound resources. For over 20 years, world oil production has grown primarily as a result of marine natural gas exploration and development. With the exhaustion of conventional oil gas resources on landing, the ocean oil gas resources, compact oil gas resources and shale petroleum gas resources are taken as next-step take over energy sources in China, wherein the ocean oil gas gradually becomes the main resource for oil gas exploration and development. In 2010, the yield of the marine oil gas in China exceeds 5000 ten thousand tons, and currently exceeds 1 hundred million tons, and the main development units are the marine oil gas main company in China, and also are partly the petroleum and natural gas group company in China and the petrochemical group company in China.
China is a large ocean country, the vast sea area reserves abundant oil and gas resources, and the ocean oil and gas resources of China account for about 25-30% of the total world oil and gas resources. In the ocean national land area of about 300 ten thousand square kilometers in China jurisdiction, an offshore land frame occupies about 130 ten thousand square kilometers, the oil-gas basin area of a land frame sea area is about 70 ten thousand square kilometers, and 6 large-scale oil-gas basin fields such as Bohai sea, north bay, yingqiong, south yellow sea, east sea and the like are mainly distributed in the offshore area, wherein the petroleum resources are 275 hundred million tons, and the natural gas is 10.6 hundred million cubic meters. In particular, abundant oil and gas resources are buried in deep water sea areas in south China, and according to incomplete statistics, the oil and gas geological resources in the whole south China account for 1/3 of the total oil and gas resources in China, wherein the oil resources are about 230-300 hundred million tons, and the natural gas resources are about 16 ten thousand cubic meters, and are recognized as petroleum treasury by geologists at home and abroad.
The utilization of marine hydrocarbon resources requires ocean platforms for exploration and exploitation. The ocean drilling platform, the ocean production platform and the offshore living platform are working bases for oil and gas development and large ocean structures, and play an important fundamental role in the aspect of developing ocean oil and gas resources. Offshore oil platforms can be generally divided into pile foundation jacket platforms, fixed gravity platforms, compliant platforms, bottoming 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 China ocean head office is established, the technology breakthrough from cooperative development to autonomous development is achieved, and the technology capability of autonomous development of offshore oil and gas fields with water depths below 200111 is achieved. At present, 45 offshore oil and gas fields in China are built, 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 world advanced countries focus on oil and gas resource development to the deep sea, and the deep sea oil platform has become a hotspot in international ocean engineering development, and mainly presents two major development trends: firstly, the water is developed to ultra-deep water. Along 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 euphoric scene, and the new generation and the updated generation of working water depths and drilling depths continuously create records. And secondly, the development of the large-scale production is advanced. With the rapid development of ocean engineering technology, ocean oil and gas platforms show large development trend so as to increase the safe and reliable operation, all-weather working capacity and long-time self-holding capacity.
The anchoring system is an integral part of marine oil and gas platforms, especially floating platforms, and the reliability of the system is extremely important. The variety of anchors is very large, and large-grabbing anchors are commonly used for ocean oil and gas platforms. The main characteristic of this anchor is that its holding power can be ensured only when the pulling force is in horizontal direction, if the pulling force has a component force in vertical direction, the holding power is reduced and the anchor holding power can be pulled out. It has been shown that the grip force of the shank turned up to 6 degrees begins to decrease and the grip force of the shank turned 12 degrees decreases significantly. Therefore, the lower end of the anchor chain must be tangent to the sea floor when anchoring, otherwise there is a risk of anchor running. When the anchor is to be lifted, the anchor chain is pulled upwards to lift the anchor handle, the anchor loses the holding power, and finally the ground is broken. With the development of the ocean oil and gas platform to deep water and large-scale, firstly, the requirement on the holding power of an anchor is higher and higher, and secondly, the required anchor chain is longer and longer, so that a new device and method are urgently needed to replace.
According to the invention, aiming at the outstanding problems, the invention provides an expansion type ocean oil and gas platform anchoring pile bolt device, firstly, the device solves the requirement of a large oil and gas exploitation platform on anchoring force, secondly, the device also solves the problem of overlong anchor chain caused by the fact that the anchor chain is tangent to the seabed, and can better adapt to the requirement of the ocean oil and gas platform on deep water and large-scale development.
Disclosure of Invention
The invention aims to solve the technical problems or achieve the technical effects that: with the development of the ocean oil and gas platform to deep water and large-scale, firstly, the requirement on the holding power of an anchor is higher and higher, and secondly, the required anchor chain is longer and longer, so that a new device and method are urgently needed to replace. The invention provides an expansion type ocean oil and gas platform anchoring pile tying device aiming at the outstanding problems, which not only solves the requirement of a large-scale oil and gas exploitation platform on anchoring force, but also solves the problem of overlong anchor chain caused by the fact that the anchor chain is tangent to the seabed.
The scheme for solving the technical problems is as follows: the invention provides an expansion type ocean oil and gas platform anchoring pile tying device which comprises a pile driving tool and an anchoring pile tying bolt, wherein the pile driving tool mainly comprises a sling, a heavy hammer, a positioning steel rod and the like, and the anchoring pile tying bolt mainly comprises a rope, a steel rod positioning hole, a pile body, a pile claw, a pile head and the like. In short, after the anchor pile is driven into the seabed, when the rope tied on the anchor pile is pulled outwards, the pile claw is continuously expanded due to geological resistance, the larger the outward pulling force is, the larger the pile claw expansion force is, the resistance on the pile claw is also larger, and at the moment, the anchor pile is not pulled out any more, so that the effect of anchoring is achieved.
Specifically, the anchoring pile bolt device of the invention comprises: the pile head comprises a pile anchoring bolt, a pile driving tool, a rope fixing and anchoring device, a steel rod positioning hole, a pile body, a pile claw and a pile head. The anchoring rope is used for anchoring the marine oil and gas platform, one end of the anchoring rope is connected with the marine oil and gas platform, and the other end of the anchoring rope is connected with the pile body of the anchoring pile bolt. The periphery of the pile body, which is close to the upper end side, is provided with a ring groove around which a fastening rope is wound.
The pile body is integrally formed by a round steel structure, and a surface structure is arranged on the outer circumferential surface of the pile body. After the pile body is driven into the seabed, the surface structure on the outer circumferential surface is beneficial to silt to permeate into the surface of the pile body, so that the firmness of the pile body when the pile body is installed on the seabed is improved. The length and the thickness of the pile body are determined according to the size and the operation water depth of the ocean oil and gas platform. And a steel plate is arranged at the top end of the pile body and is used for receiving the impact force of the pile driving tool, so that the pile body is not damaged under the impact of the pile driving tool.
And a positioning steel pipe matched with the positioning steel rod is further arranged 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 holes can also be formed directly in the pile body, for example by drilling. The size of the positioning hole is matched with the positioning steel rod.
The pile claw is arranged on the outer circumference of the pile body. Wherein, the stake claw is connected with the stake body movably, such as articulated, ball connection. And driven into the sea floor along with the pile body. When the rope on the anchor pile is pulled outwards, the pile claw is continuously expanded by geological resistance, the larger the outward pulling force is, the larger the pile claw expansion force is, the larger the resistance on the pile claw is, and at the moment, the anchor pile bolt can not be pulled out any more, so that the anchoring effect is improved.
And installing a pile head at the lower end of the pile body, wherein the pile head is made of tool steel. The pile head is conical in shape with the conical pointed end facing the seabed, facilitating driving of the entire mooring peg arrangement into the seabed.
The anchoring pile bolt device also comprises a piling tool for impacting the anchoring pile bolt into the seabed, wherein the upper part of the piling tool is a heavy hammer. The weight of the heavy hammer can be determined according to the size of the anchoring pile bolt and the depth of the heavy hammer driven into the sea bottom in order to ensure the piling effect. A plurality of grooves are formed in the lower end face 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 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 connected with the heavy hammer in a rigid way, 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 positioning steel rod is manufactured through the steel pipe, the inner hole of the steel pipe is communicated with the grooves on the heavy hammer, so that the influence of water pressure on the impact force of the heavy hammer during piling is avoided. When the positioning steel rod is manufactured by a non-hollow iron rod, a plurality of grooves, optionally radial symmetrical long grooves, are formed in the outer peripheral surface of the positioning steel rod along the axial direction, wherein the long grooves extend to the upper end and the lower end of the positioning steel rod. The radial symmetrical long grooves are communicated with a plurality of grooves on the heavy hammer.
The heavy hammer and the pile body are further provided with a pair of connecting bayonets, wherein the heavy hammer 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 tying device, comprising the following steps:
s1, sea condition investigation: according to the ocean oil and gas exploitation needs, the sea area of the ocean oil and gas platform to be set is investigated, and the conditions of water depth, ocean currents, waves, substrates and the like are clarified.
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 directions of wind, wave and current forces are fully analyzed, the head of the platform is anchored well against the direction of wind, wave and current, and then the anchoring ropes are pulled to all directions to be anchored radially, so that the stress state of the platform is ensured to be good and the stability is ensured to be good. In order to increase the positioning 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, the larger the restoring force of the positioning system, the strong the capability of resisting deflection, and the small the horizontal displacement caused by wind and wave of the platform.
S3, piling 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 strander, 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 seabed by utilizing inertia, and then the heavy hammer is continuously pulled, and the positioning steel rod cannot leave the positioning hole of the pile body and is put down under the action of the elastic rope. The anchor pile bolt is driven into the seabed through the impact force of the heavy hammer, and the pile body is driven into the seabed after the heavy hammer is confirmed to be driven into the seabed.
Drawings
FIG. 1 is a front view of an inflatable offshore oil and gas platform mooring pile tethering device;
FIG. 2 is an exploded view of an expansion type offshore oil and gas platform anchoring pile tying device;
FIG. 3 is a cross-sectional view of an inflatable offshore oil and gas platform anchoring pile tethering device;
FIG. 4 is a schematic diagram of a pile driving tool of an expansion type offshore oil and gas platform anchoring pile tying device;
FIG. 5 is a schematic view of an expanded marine oil and gas platform anchoring pile fastening device fixing platform.
Detailed Description
In order to more clearly illustrate the embodiments of the invention or technical solutions in the prior art, embodiments of the invention are described below with the aid of the accompanying drawings; it is apparent that the following drawings are merely some embodiments of the present invention and are not limiting of the present invention.
As shown in fig. 1 to 4, the mooring peg arrangement of the present invention comprises: the pile comprises a anchoring pile bolt 10, a pile driving tool 20, a anchoring rope 11, a steel rod positioning hole 12, a pile body 13, a pile claw 14 and a pile head 15. The anchoring rope 11 is used for anchoring the marine oil and gas platform P, one end of the anchoring rope 11 is connected with the marine oil and gas platform P, and the other end of the anchoring rope 11 is connected with the pile body 13 of the anchoring pile bolt 10. The pile body 13 is provided with a ring groove around which the mooring rope 11 is wound on the outer periphery near the upper end side.
The pile body 13 is entirely formed of a circular steel structure, and a surface structure is provided on the outer circumferential surface of the pile body 13, specifically, for example, a pattern structure 16 or a blade structure 17 (only the same position as the pattern structure 16 is shown in the drawing). After the pile body 13 is driven into the seabed, the surface structure on the outer circumferential surface is beneficial to the penetration of sediment into the surface of the pile body 13, so that the firmness of the pile body 13 when installed on the seabed is improved. The length and the thickness of the pile body 13 are determined according to the size and the operation water depth of the marine oil and gas platform P.
Further, a steel plate 19 for receiving the impact force of the pile driving tool 20 is installed at the top end of the pile body 13 so that the pile body 13 is not damaged by the impact of the pile driving tool 20. The steel plate 19 is provided in a ring shape and fixedly provided around the circumference of the end surface of the pile body 13.
In order to ensure that the piling tool 20 can strike the top end of the pile body 13 accurately, a positioning steel pipe 18 matched with a positioning steel rod 22 is also arranged in the middle of the pile body 13, and a steel rod positioning hole 12 is formed in the positioning steel pipe 18 of the pile body 13. 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 holes 12 may also be formed directly inside the pile body 13, for example by drilling. The steel rod locating holes 12 are sized to mate, and in particular clearance fit, with the locating steel rods 22 to ensure that the piling tool 20 impacts on top of the mooring peg arrangement 10. The steel rod positioning hole 12 coincides with the axis of the pile body 13, is provided 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, specifically, the pile claw 14 and the pile body 13 can be hinged together through a pin, or are connected together through a ball socket structure, and are driven into the seabed along with the pile body 13. When the rope on the anchor pile is pulled outwards, the pile claw is continuously expanded by 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 anchor pile bolt 10 can not be pulled out any more, so that the anchoring effect is improved.
A pile head 15 is arranged 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 adapted to strike the sea floor under the impact of the pile driving tool 20. The pile head 15 is conical in shape with the conical tip facing the sea floor, facilitating driving of the entire mooring peg arrangement 10 into the sea floor.
The anchoring pile bolt device of the invention further comprises a piling tool 20 for impacting the anchoring pile bolt into the sea floor, wherein the upper part of the piling tool 20 is a heavy hammer 21. The weight 21 may be made of iron, and its weight is determined by the size of the anchor stud 10 and the depth of the pile driven into the sea bottom in order to secure the pile driving effect. A plurality of grooves 24 are formed on the lower end surface of the weight along the radial direction; and, one end of the pile driving tool 20 is flexibly connected to the slings 23, and the other end is rigidly connected to the positioning steel rod. The sling 23 may be a wire or rope, wherein one end of the sling 23 is connected to the marine winch and one end is connected to the weight 21 of the piling tool 20.
The lower part of the pile driving 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 manufactured by a steel pipe, an inner hole 25 of the steel pipe is communicated with a plurality of grooves 24 on the heavy hammer, so that the influence of water pressure on the impact force of the heavy hammer 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 provided on the outer circumferential surface of the positioning steel rod 22 along the axial direction, wherein the long grooves 26 extend all the way to the upper and lower ends of the positioning steel rod 22. The radially symmetrical elongated slots 26 communicate with the plurality of grooves 24 on the weight 21.
A pair of connecting bayonets 27 are also provided on the weight 21 and the pile 13, wherein the weight 21 and the pile 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 operation.
The invention also discloses a system and a working method of the anchoring pile bolt device, which comprise the following steps of:
s1, sea condition investigation: according to the ocean oil and gas exploitation needs, the sea area of the ocean oil and gas platform to be set is investigated, and the conditions of water depth, ocean currents, waves, substrates and the like are clarified.
S2, anchoring design: after grasping the sea condition, the anchoring pile bolt 10 according to the invention is designed according to the main scale of the ocean oil and gas platform. The directions of wind, wave and current forces are fully analyzed, the head of the platform is anchored well against the direction of wind wave current preferentially, and then the anchoring ropes 11 are pulled to all directions to be anchored radially, so that the stress state of the platform is ensured to be good and the stability is ensured to be good. Typically, the rectangular platform mooring peg 10 is intended to be 8 and the triangular platform mooring peg 9 is intended to be arranged according to the shape of the platform. In order to increase the positioning 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, the larger the restoring force of the positioning system, the strong the capability of resisting deflection, and the small the horizontal displacement caused by wind and wave of the platform.
S3, piling 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 strander, and the other end of the sling is connected to the heavy hammer. The positioning steel rod 22 under the heavy hammer 21 is inserted into the steel rod positioning hole 12 of the pile body 13, so that the heavy hammer, the positioning steel rod 22 and the anchoring pile bolt 10 are synchronously inserted into the sea bottom by inertia, and then the heavy hammer 21 is continuously pulled, and the positioning steel rod 22 cannot leave the steel rod positioning hole 12 of the pile body 13 and the heavy hammer 21 is put down again under the action of the elastic rope 28. The anchor stud 10 is driven into the seabed by the impact force of the weight 21, and when the weight 21 is confirmed to be driven into the seabed, it is known that the pile body 13 is driven into the seabed.
The principles and embodiments of the present invention have been described with reference to specific examples, which are intended to be illustrative only of the methods and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. The description is not to be taken as limiting the invention.
Claims (6)
1. An expansion type offshore oil and gas platform anchoring pile bolt device, comprising: a mooring peg (10), a piling tool (20);
the anchoring pile bolt (10) is characterized by comprising a anchoring rope (11), a steel rod positioning hole (12) and a pile body (13), wherein one end of the anchoring rope (11) is connected with an ocean oil and 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 an annular groove around which the anchoring rope (11) is wound is formed in the periphery of the pile body (13) close to the upper end side; the pile body (13) is formed by a round 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 silt to permeate into the surface of the pile body (13), so that the firmness of the pile body (13) when installed on the seabed is improved;
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 formed in the lower end surface of the heavy hammer along the radial direction; the lower part of the piling tool (20) is provided with a positioning steel rod (22), 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 (22), wherein one end of the sling (23) is connected with a ship winch, and the other end of the sling is connected with a heavy hammer (21) of the piling tool (20);
a positioning steel pipe (18) matched with the positioning steel rod (22) is further arranged in the middle of the pile body (13), and a steel rod positioning hole (12) is formed in the positioning steel pipe (18) of the pile body (13);
a pair of bayonets (27) are further arranged on the heavy hammer (21) and the pile body (13), wherein the heavy hammer (21) and the pile body (13) are connected through an elastic rope (28), the length of the elastic rope (28) is set to ensure that a positioning steel rod is inserted into the steel rod positioning hole (12), and the bayonets (27) are used for connecting the elastic rope (28);
the positioning steel rod (22) is made of steel pipes or non-hollow iron rods,
when the positioning steel rod (22) is manufactured by a steel pipe, an inner hole (25) of the steel pipe is communicated with a plurality of grooves (24) on the heavy hammer;
when the positioning steel rod (22) is manufactured through a non-hollow iron rod, radial symmetrical long grooves (26) are formed in the outer 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 radial symmetrical long grooves (26) are communicated with a plurality of grooves (24) on the heavy hammer (21).
2. An expansion type offshore oil and gas platform anchoring pile bolt device as defined 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 pile driving tool (20) so that the pile body (13) is not damaged under the impact of the pile driving tool (20).
3. An expansion type offshore oil and gas platform anchoring pile bolt device according to any one of claims 1-2, wherein: the anchoring pile bolt device for the expansion type ocean oil and gas platform further comprises pile claws (14), wherein the pile claws (14) are arranged on the outer circumferential part of the pile body (13), and the pile claws (14) are movably connected with the pile body (13).
4. An expansion type offshore oil and gas platform anchoring pile bolt device as defined in claim 3, wherein: the movable connection is hinged through a pin, or is connected through a ball-and-socket structure.
5. An expansion type offshore oil and gas platform anchoring pile bolt device according to any one of claims 1-2, wherein: the pile head (15) is made of tool steel, and the pile head (15) is conical in shape.
6. A method of operating a mooring peg arrangement having an inflatable offshore oil and gas platform mooring peg arrangement according to any one of claims 1-5, characterized in that:
s1, sea condition investigation: according to the sea oil gas exploitation requirements, the sea area of the to-be-set ocean oil gas platform is investigated, and the water depth, ocean currents, waves and substrate conditions are defined;
s2, anchoring design: after the sea condition is mastered, the anchoring pile bolt (10) is designed according to the main scale of the ocean oil and gas platform; the directions of wind, wave and current forces are fully analyzed, the head of the platform is anchored well against the direction of wind, wave and current, and then the anchoring ropes (11) are pulled to all directions to be anchored radially, so that the stress state and stability of the platform are ensured to be good; according to the shape arrangement of the platform, 8 rectangular platform anchoring piles (10) are adopted, and 9 triangular platform anchoring piles are adopted; pretension is required in use, i.e. one and the same pretension is applied to each anchor pile in the system;
s3, piling operation: the length of the sling of the piling tool is determined according to the water depth, one end of the sling of the piling tool is connected to the winch, and the other end of the sling of the piling tool is connected to the heavy hammer; the positioning steel rod (22) under the heavy hammer (21) is inserted into the steel rod positioning hole (12) of the pile body (13), so that the heavy hammer, the positioning steel rod (22) and the anchoring pile bolt (10) are synchronously inserted into the sea bottom by inertia, and then the heavy hammer (21) is continuously pulled, 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), and the heavy hammer (21) is put down again; the anchoring pile bolt (10) is driven into the sea bottom by the impact force of the heavy hammer (21).
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| 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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| CN202110196418.4A CN113998056B (en) | 2021-02-22 | 2021-02-22 | Expansion type ocean oil gas platform anchoring pile tying device |
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| CN113998056A CN113998056A (en) | 2022-02-01 |
| CN113998056B true CN113998056B (en) | 2023-10-03 |
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| CN202110196418.4A Active CN113998056B (en) | 2021-02-22 | 2021-02-22 | Expansion type ocean oil gas platform anchoring pile tying device |
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| JP2022547792A (en) * | 2019-08-12 | 2022-11-16 | サステイナブル マリン エナジー リミテッド | Fixing tool and installation method |
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