CN108755645B - Device for reducing pile pulling resistance of jack-up drilling platform and drilling platform - Google Patents
Device for reducing pile pulling resistance of jack-up drilling platform and drilling platform Download PDFInfo
- Publication number
- CN108755645B CN108755645B CN201810743646.7A CN201810743646A CN108755645B CN 108755645 B CN108755645 B CN 108755645B CN 201810743646 A CN201810743646 A CN 201810743646A CN 108755645 B CN108755645 B CN 108755645B
- Authority
- CN
- China
- Prior art keywords
- movable
- pile
- jack
- drilling platform
- cylinder
- 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.)
- Active
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 60
- 230000035515 penetration Effects 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 claims 1
- 239000002689 soil Substances 0.000 abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 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
- 239000003607 modifier Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0056—Platforms with supporting legs
- E02B2017/006—Platforms with supporting legs with lattice style supporting legs
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a device for reducing pile pulling resistance of a jack-up drilling platform and the drilling platform, wherein the device comprises: length-adjustable placeholder, the placeholder includes: a fixed cylinder; the movable cylinders are sequentially spliced in the fixed cylinder from outside to inside, two adjacent movable cylinders can be connected in an axially relatively movable mode, the movable cylinder at the outermost side can be connected with the fixed cylinder in an axially movable mode, and the space occupying device is lengthened or shortened through the axial movement of the movable cylinders. The drilling platform includes: a platform body; the truss type pile leg of the supporting platform body comprises a pile leg truss body and a pile shoe connected below the pile leg truss body; the device for reducing pile pulling resistance of the jack-up drilling platform comprises a space occupying device, a pile leg truss body and a fixing barrel, wherein the space occupying device is arranged on the inner side of the pile leg truss body, and the fixing barrel is fixedly connected above a pile shoe. The invention can reduce the backfill soil volume in the pile leg truss body, reduce the pile pulling resistance of the platform and can not influence the stability of the drilling platform.
Description
Technical Field
The invention relates to the field of offshore oil drilling equipment, in particular to a device for reducing pile pulling resistance of a jack-up drilling platform and the drilling platform.
Background
With deep development of oil and gas resources in shallow water areas at sea, jack-up drilling platforms are increasingly applied to shallow water drilling at sea. Pile pulling operation of the jack-up drilling platform is one of key operation links of the marine drilling platform, and relates to safety of the drilling platform and the operation period of the whole well. The smooth pile pulling operation can greatly reduce the whole well operation time, save the operation cost and avoid consuming a great amount of unnecessary manpower and material resources. Therefore, the reduction of pile pulling resistance of the jack-up drilling platform has extremely important significance for safe and efficient exploration and development of oil gas in shallow sea areas.
The truss type pile leg of the jack-up drilling platform consists of a pile leg truss body and pile shoes, and after pile leg pile insertion is in place, soil and water originally discharged by the pile leg are backfilled into the pile leg truss body and are gradually compacted along with the time. Pile pulling resistance of the jack-up drilling platform is mainly composed of the weight of backfill soil at the upper part, the adsorption force of soil body received by the bottom of a pile shoe, and some small shearing force and friction force. When the pile leg of the self-elevating drilling platform is deeper in mud depth or the working time is longer after the platform is in place, the backfill soil on the upper part is more, so that the pile pulling resistance is larger, the pile pulling is difficult, and even the situation that the pile leg cannot be pulled up possibly occurs.
Disclosure of Invention
The invention aims to provide a device for reducing pile pulling resistance of a jack-up drilling platform and the drilling platform, which can reduce backfill soil volume in a pile leg truss, reduce pile pulling resistance of the platform and can not influence stability of the drilling platform.
To achieve the above object, the present invention provides an apparatus for reducing pile pulling resistance of a jack-up rig, comprising: a length-adjustable placeholder device, the placeholder device comprising: a fixed cylinder; the movable cylinders are sequentially inserted into the fixed cylinder from outside to inside, two adjacent movable cylinders can be connected in an axially relatively movable mode, the outermost movable cylinder can be connected with the fixed cylinder in an axially movable mode, and the space occupying device stretches or shortens through the axial movement of the movable cylinders.
The device for reducing pile pulling resistance of the jack-up drilling platform comprises lower steps arranged on the outer side wall of the lower end of each movable barrel, upper steps arranged on the inner side wall of the upper end of each movable barrel, wherein in two adjacent movable barrels, the lower steps of the movable barrels positioned on the inner side can be abutted under the upper steps of the movable barrels positioned on the outer side, and the movable barrels positioned on the outer side can be hung up by axial upward movement; the upper end inside wall of the fixed cylinder is provided with a limiting step, and the limiting step of the fixed cylinder can limit the lower step of the movable cylinder at the outermost side.
The device for reducing pile pulling resistance of the jack-up drilling platform, as described above, wherein the upper step and the lower step are annular steps, and in two adjacent movable barrels, the outer diameter of the lower step of the movable barrel positioned on the inner side is larger than the inner diameter of the upper step of the movable barrel positioned on the outer side; the limiting step is an annular step, and the inner diameter of the limiting step is smaller than the outer diameter of the lower step of the movable barrel at the outermost side.
An apparatus for reducing jack-up rig pile-up resistance as described above, wherein the apparatus for reducing jack-up rig pile-up resistance further comprises: the lifting rope is connected with the innermost movable cylinder, can lift the innermost movable cylinder to move upwards in the axial direction, and sequentially hangs a plurality of movable cylinders from inside to outside by lifting the innermost movable cylinder to move upwards in the axial direction.
An apparatus for reducing jack-up rig pile-up resistance as described above, wherein the apparatus for reducing jack-up rig pile-up resistance further comprises: one end of the pulley bracket is fixed at the top end of the pile leg truss body, and the other end of the pulley bracket is positioned right above the occupying device; the first pulley is connected to the other end of the pulley bracket; the second pulley is connected to the top end of the pile leg truss body, and the lifting rope sequentially bypasses the first pulley and the second pulley.
An apparatus for reducing jack-up rig jack-up resistance as described above, wherein the apparatus for reducing jack-up rig jack-up resistance further comprises a hanger connected between the lifting rope and the innermost movable barrel, the hanger comprising: the lifting ring comprises a ring and a connecting rod which are vertically arranged, the upper end of the connecting rod is connected with the ring, and the lifting rope penetrates through the ring to be connected with the ring; the hanging plate is horizontally arranged, the center of the hanging plate is connected with the lower end of the connecting rod, a plurality of perforations are formed in the hanging plate, the perforations are arranged at equal intervals in the circumferential direction of the hanging plate, a plurality of lifting lugs are arranged at the top of the innermost movable cylinder at equal intervals in the circumferential direction, one ends of a plurality of ropes respectively penetrate through the perforations and are connected with the hanging plate, and the other ends of the ropes are respectively connected with the lifting lugs.
An apparatus for reducing jack-up rig pile-up resistance as described above, wherein the apparatus for reducing jack-up rig pile-up resistance further comprises a lifting device connected to the lifting rope.
The device for reducing pile pulling resistance of the jack-up drilling platform, wherein the top of the innermost movable barrel is closed, and the top of the other movable barrels is open; the top of the fixed cylinder is open and the bottom is closed.
The invention also provides a drilling platform, comprising: a platform body; the truss type pile leg comprises a pile leg truss body and pile shoes connected below the pile leg truss body; according to the device for reducing pile pulling resistance of the jack-up drilling platform, the space occupying device is arranged on the inner side of the pile leg truss body, and the fixed cylinder is fixedly connected above the pile shoe.
The drilling platform is characterized in that the maximum length of the space occupying device is not smaller than the mud entering depth of the truss type pile leg.
The device for reducing pile pulling resistance of the jack-up drilling platform and the drilling platform have the characteristics and advantages that:
1. the device for reducing pile pulling resistance of the jack-up drilling platform is arranged in the pile leg truss body of the truss type pile leg, and the space occupying device can occupy part of space in the pile leg truss body, so that the backfill soil volume in the pile leg truss body can be reduced, the pile pulling resistance of the drilling platform is reduced, meanwhile, the stability of the drilling platform is not influenced, the height of the space occupying device can be freely adjusted according to the change of the pile inserting depth of the jack-up drilling platform, and the device is flexible and convenient to use and is also beneficial to reducing the pile inserting depth of the pile leg;
2. the device for reducing pile pulling resistance of the jack-up drilling platform and the drilling platform are simple in structure, low in cost and convenient to use.
Drawings
The following drawings are only for purposes of illustration and explanation of the present invention and are not intended to limit the scope of the invention. Wherein:
figure 1 is a schematic view of the installation of the apparatus for reducing jack-up resistance of a jack-up rig of the present invention.
Reference numerals for main elements:
1 space occupying device
11 fixed cylinder 12 moving cylinder 13 lower step
14 upper step 15 limit step
2 lifting rope
3 pulley bracket
31 crossbeam 32 diagonal bracing
4 first pulley
5 second pulley
6 hanging piece
61 lifting ring 611 ring 612 connecting rod
62 hanging plate
7 rope
8-leg truss body 81-leg chord tube 82 horizontal support tube
Detailed Description
For a clearer understanding of technical features, objects, and effects of the present invention, a specific embodiment of the present invention will be described with reference to the accompanying drawings. Wherein the adjective or adverb modifiers "horizontal" and "vertical," "upward" and "downward" are used merely to facilitate relative reference between groups of terms, and do not describe any particular directional limitation on the modified term.
As shown in fig. 1, the present invention provides a device for reducing pile pulling resistance of a jack-up drilling platform, which is used for being installed inside a pile leg truss body 8 of a truss type pile leg and being lowered below a mud surface along with the pile leg, the device comprises a length (i.e. height) adjustable space occupying device 1, the space occupying device 1 comprises a fixed cylinder 11 and a plurality of movable cylinders 12, the plurality of movable cylinders 12 are sequentially inserted from outside to inside in the fixed cylinder 11, or the plurality of movable cylinders 12 are sequentially sleeved from outside to inside in the fixed cylinder 11, the diameters of the plurality of movable cylinders 12 arranged from outside to inside are sequentially reduced, in fig. 1, only the innermost movable cylinder 12 is shown, two adjacent movable cylinders 12 can be axially and relatively movably connected, or the movable cylinder 12 positioned at the inner side can slide into or partially slide out of the movable cylinder 12 positioned at the outer side of the movable cylinder, the outermost movable cylinder 12 can be axially and movably connected with the fixed cylinder 11, or the outermost movable cylinder 12 can slide into or partially slide out of the fixed cylinder 11, and the space occupying device 1 can be axially and axially moved by the movable cylinders 12 to be axially extended or shortened.
When the device is used, the device is arranged in the pile leg truss body 8 of the truss type pile leg, the occupying device 1 can occupy part of space in the pile leg truss body 8, so that the backfill soil volume in the pile leg truss body 8 can be reduced, the pile pulling resistance of a platform is reduced, and especially when the pile leg of the self-elevating drilling platform is too deep in mud or is inserted for long in-place operation time, the pile pulling resistance of the pile leg is not large due to the overlarge backfill soil volume at the upper part, so that the pile pulling is difficult or the pile leg cannot be pulled up, and the device has extremely important practical significance for shortening the operation period, saving the operation cost and ensuring the safety, the high efficiency and the effectiveness of the pile pulling operation;
meanwhile, as the height of the space occupying device can be adjusted, the influence of waves and currents caused by overhigh mud outlet of the space occupying device can be prevented by adjusting the height of the space occupying device to be not higher than the mud surface, so that instability of the pile leg and the platform main body is avoided;
in addition, the height of the occupying device 1 is adjustable, and the height of the occupying device 1 is adjusted according to the mud entering depth of the truss type spud leg, so that the invention can be suitable for occasions with different mud entering depths of the spud leg, and meanwhile, the occupied space in the spud leg truss body 8 can be changed by adjusting the height of the occupying device 1, and the truss type spud leg truss is flexible and convenient to use;
in addition, if backfill exists in the pile leg truss body, the soil layer below the drilling platform bears the weight of the pile leg truss body and the pile shoe and the backfill in the pile leg truss body, the backfill weakens the bearing capacity of the soil layer on the pile leg, and the influence of the backfill is usually considered in order to ensure that the pile leg obtains enough bearing capacity because the soil entering depth of the pile leg is related to the bearing capacity of the soil layer, and the design of the soil entering depth of the pile leg is deeper than when the backfill is not considered; by arranging the device provided by the invention, backfill is reduced, so that the bearing capacity of soil layers to the pile legs is improved, the depth of the pile legs into mud is reduced, and the pile pulling resistance of the pile legs is indirectly further reduced.
Further, the top of the innermost movable barrel 12 is closed, and the top of each of the remaining movable barrels 12 is open; the fixed cylinder 11 is open at the top and closed at the bottom.
As shown in fig. 1, in a specific embodiment, the outer side wall of the lower end of each movable barrel 12 is provided with a lower step 13, the inner side wall of the upper end of each movable barrel 12 is provided with an upper step 14, in two adjacent movable barrels 12, the lower step 13 of the inner movable barrel 12 can be abutted under the upper step 14 of the outer movable barrel 12 and can hang the outer movable barrel 12 by moving upwards in the axial direction, so that the outer movable barrel 12 is driven to move together, in addition, the upper step 14 of the outer movable barrel 12 can also play a limiting role on the inner movable barrel 12, so as to prevent the inner movable barrel 12 from being separated from the outer movable barrel 12;
the limiting step 15 is arranged on the inner side wall of the upper end of the fixed cylinder 11, and the limiting step 15 of the fixed cylinder 11 can limit the lower step 13 of the movable cylinder 12 at the outermost side, so that the movable cylinder 12 at the outermost side is prevented from being separated from the fixed cylinder 11.
Further, the upper step 14 and the lower step 13 are annular steps, and in the two adjacent movable barrels 12, the outer diameter of the lower step 13 of the movable barrel 12 positioned at the inner side is larger than the inner diameter of the upper step 14 of the movable barrel 12 positioned at the outer side, so that the lower step 13 of the movable barrel 12 positioned at the inner side can be abutted under the upper step 14 of the movable barrel 12 positioned at the outer side, and the upper step 14 of the movable barrel 12 positioned at the outer side can play a limiting role on the movable barrel 12 positioned at the inner side;
the limiting step 15 is an annular step, and the inner diameter of the limiting step 15 is smaller than the outer diameter of the lower step 13 of the movable barrel 12 at the outermost side, so that the limiting step 15 of the fixed barrel 11 can limit the movable barrel 12 at the outermost side.
As shown in fig. 1, in a preferred embodiment, the device for reducing pile pulling resistance of the jack-up rig further comprises a lifting rope 2, for example, the lifting rope 2 is a steel rope, the lifting rope 2 is connected with the innermost movable barrel 12 and can lift the innermost movable barrel 12 to move axially upwards, the plurality of movable barrels 12 are sequentially suspended in order from inside to outside by lifting the innermost movable barrel 12 to extend the placeholder device 1 to a maximum length (i.e., maximum height), and the length or the extension of the placeholder device 1 is controlled by controlling the upward movement distance of the innermost movable barrel 12.
In one possible solution, the means for reducing the pile pulling resistance of the jack-up rig further comprise a lifting device (not shown) connected to the lifting string 2 for lifting the movable drum 12. The lifting device may be an existing device capable of lifting the object.
In another possible technical scheme, the device for reducing pile pulling resistance of the jack-up drilling platform further comprises a pulley bracket 3, a first pulley 4 and a second pulley 5, wherein one end of the pulley bracket 3 is fixed at the top end of the pile leg truss body 8, and the other end of the pulley bracket is positioned right above the occupying device 1; the first pulley 4 is connected to the other end of the pulley bracket 3, namely, the first pulley 4 is positioned right above the space occupying device 1; the second pulley 5 is connected on the top of spud leg truss body 8, and first pulley 4 and second pulley 5 are walked around in proper order to lifting rope 2, and for example first pulley 4 and second pulley 5 are the fixed pulley, and pulley support 3 includes crossbeam 31 and the bracing 32 that the slope set up that the level set up, and the one end of crossbeam 31 is connected with the one end of bracing 32, and the other end of crossbeam 31 and the other end of bracing 32 all are connected with spud leg truss body 8. Through setting up first pulley 4 and second pulley 5, can change the direction of lifting, pull rope 2 downwards on the platform main part, convenient operation.
Specifically, one end of the pulling rope 2 is connected to the innermost movable tube 12, and after the pulling rope 2 bypasses the first pulley 4 and the second pulley 5, the other end of the pulling rope 2 can be connected to a device capable of pulling down the pulling rope 2, for example, the device is a winch capable of winding up the pulling rope 2, and naturally, the pulling rope 2 can be pulled down through manual operation, and then the other end of the pulling rope 2 is fixed.
As shown in fig. 1, further, the device for reducing pile pulling resistance of the jack-up drilling platform further comprises a hanging piece 6 connected between the lifting rope 2 and the innermost movable barrel 12, the hanging piece 6 comprises a hanging ring 61 and a hanging disc 62, the hanging ring 61 comprises a circular ring 611 and a connecting rod 612 which are vertically arranged, the upper end of the connecting rod 612 is connected with the circular ring 611, the lifting rope 2 passes through the circular ring 611 to be connected with the circular ring 611, for example, the connection between the lifting rope 2 and the circular ring 611 is non-fixed, and the lifting rope 2 and the circular ring 611 can relatively rotate;
the hanging plate 62 is horizontally arranged, the center of the hanging plate 62 is connected with the lower end of the connecting rod 612, a plurality of through holes are formed in the hanging plate 62, the through holes are arranged at equal intervals along the circumferential direction of the hanging plate 62, a plurality of lifting lugs are arranged at equal intervals along the circumferential direction at the top of the innermost movable cylinder 12, one ends of a plurality of ropes 7 respectively penetrate through the through holes to be connected with the hanging plate 62, the other ends of the plurality of ropes 7 are respectively connected with the plurality of lifting lugs, for example, two ends of the plurality of ropes 7 are connected with the hanging plate 62 and the lifting lugs in a non-fixed mode, and the hanging plate can rotate relatively, for example, the ropes 7 are steel ropes.
The device for reducing pile pulling resistance of the self-elevating drilling platform is suitable for truss type pile legs of the self-elevating drilling platform with different sizes, the height of the space occupying device can be freely adjusted according to the depth of mud entering of the pile legs during use, the volume of backfill soil can be reduced to the greatest extent, and the device is simple in structure, low in cost and convenient to use, and the safety and stability of the self-elevating drilling platform are not affected.
The invention also provides a drilling platform, which is a self-elevating drilling platform, the self-elevating drilling platform comprises a platform main body, truss type spud legs for supporting the platform main body and the device for reducing pile pulling resistance of the self-elevating drilling platform, wherein the truss type spud legs comprise a spud leg truss body 8 and spud boots (not shown) connected below the spud leg truss body 8, and the top ends of the spud leg truss bodies 8 are positioned above the platform main body; the occupying device 1 is arranged on the inner side of the pile leg truss body 8 and is positioned below the platform main body, the fixed cylinder 11 is fixedly connected above the pile shoe, the lower part of the pile leg truss body 8 is positioned below the mud surface and the upper part of the pile leg truss body 8 is positioned above the mud surface and extends to the position above the sea surface when drilling, the platform main body is positioned above the sea surface, and the device for reducing the pile pulling resistance of the jack-up drilling platform is positioned below the mud surface.
The occupying device 1 can occupy part of the space in the pile leg truss body 8, so that the backfill soil volume in the pile leg truss body 8 can be reduced, the pile pulling resistance of the platform is reduced, and meanwhile, the stability of the drilling platform is not influenced; the height of the space occupying device 1 can be adjusted according to the mud entering depth of the truss type pile leg.
Specifically, the pile leg truss body 8 includes vertical pile leg chord tubes 81, horizontal support tubes 82 and inclined support tubes (not shown in the figure), for example, the pile leg truss body 8 is a triangular truss, the pile leg chord tubes 81 are three and are arranged in a triangle shape, the horizontal support tubes 82 are horizontally connected between two adjacent pile leg chord tubes 81, the inclined support tubes are obliquely connected between two adjacent pile leg chord tubes 81 and between two adjacent horizontal support tubes 82, the fixing cylinder 11 of the space occupying device 1 is located inside a truss structure surrounded by the pile leg chord tubes 81, the horizontal support tubes 82 and the inclined support tubes, and the fixing cylinder 11 is welded with the horizontal support tubes 82 and the inclined support tubes adjacent to the fixing cylinder 11.
Further, the maximum length (i.e., the maximum height) of the space occupying device 1 is not smaller than the mud entering depth of the truss type pile leg, so that the space occupied by the space occupying device 1 in the pile leg truss body 8 is increased, the backfill soil volume in the pile leg truss body 8 is reduced to the greatest extent, and the pile pulling resistance of the platform is reduced.
By adopting the device for reducing pile pulling resistance of the jack-up drilling platform and the drilling platform, the height of the space occupying device is correspondingly adjusted according to the pile inserting depth of the jack-up drilling platform, for example, the height of the space occupying device is adjusted to be flush with the mud surface, so that the volume of backfill soil in a pile leg is reduced to the greatest extent. Meanwhile, the height of the occupying device is adjusted to be not higher than the mud surface, so that the occupying device is prevented from being influenced by waves and currents due to overhigh mud outlet, and instability of the pile leg and the platform main body is avoided.
The foregoing is illustrative of the present invention and is not to be construed as limiting the scope of the invention. Any equivalent changes and modifications can be made by those skilled in the art without departing from the spirit and principles of this invention, and are intended to be within the scope of this invention. It should be noted that, the components of the present invention are not limited to the above-mentioned overall application, and each technical feature described in the specification of the present invention may be selected to be used singly or in combination according to actual needs, so that other combinations and specific applications related to the present invention are naturally covered by the present invention.
Claims (5)
1. An apparatus for reducing jack-up rig pile pulling resistance, the apparatus for reducing jack-up rig pile pulling resistance comprising:
a length-adjustable placeholder device, the placeholder device comprising:
a fixed cylinder;
the movable cylinders are sequentially spliced in the fixed cylinder from outside to inside, two adjacent movable cylinders can be connected in an axially relatively movable manner, the outermost movable cylinder can be connected with the fixed cylinder in an axially movable manner, and the space occupying device is lengthened or shortened through the axial movement of the movable cylinders;
wherein, the lower step is arranged on the outer side wall of the lower end of each movable barrel, the upper step is arranged on the inner side wall of the upper end of each movable barrel, in the two adjacent movable barrels, the lower step of the movable barrel positioned at the inner side can be abutted under the upper step of the movable barrel positioned at the outer side, and the movable barrel positioned at the outer side can be hung up by axial upward movement; the limiting step is arranged on the inner side wall of the upper end of the fixed cylinder, and the limiting step of the fixed cylinder can limit the lower step of the movable cylinder at the outermost side;
the upper step and the lower step are annular steps, and in two adjacent movable cylinders, the outer diameter of the lower step of the movable cylinder positioned at the inner side is larger than the inner diameter of the upper step of the movable cylinder positioned at the outer side; the limiting step is an annular step, and the inner diameter of the limiting step is smaller than the outer diameter of the lower step of the movable barrel at the outermost side;
the device for reducing pile pulling resistance of the jack-up drilling platform further comprises:
the lifting rope is connected with the innermost movable cylinder and can lift the innermost movable cylinder to move upwards in the axial direction, and a plurality of movable cylinders are sequentially hung from inside to outside through lifting the innermost movable cylinder to move upwards in the axial direction;
one end of the pulley bracket is fixed at the top end of the pile leg truss body, and the other end of the pulley bracket is positioned right above the occupying device;
the first pulley is connected to the other end of the pulley bracket;
the second pulley is connected to the top end of the pile leg truss body, and the lifting rope sequentially bypasses the first pulley and the second pulley;
a hanger connected between the lifting rope and the innermost movable barrel, the hanger comprising:
the lifting ring comprises a ring and a connecting rod which are vertically arranged, the upper end of the connecting rod is connected with the ring, and the lifting rope penetrates through the ring to be connected with the ring;
the hanging plate is horizontally arranged, the center of the hanging plate is connected with the lower end of the connecting rod, a plurality of perforations are formed in the hanging plate, the perforations are arranged at equal intervals in the circumferential direction of the hanging plate, a plurality of lifting lugs are arranged at the top of the innermost movable cylinder at equal intervals in the circumferential direction, one ends of a plurality of ropes respectively penetrate through the perforations and are connected with the hanging plate, and the other ends of the ropes are respectively connected with the lifting lugs.
2. The apparatus for reducing jack-up rig jack-up resistance of claim 1, further comprising a lifting device connected to the lifting string.
3. The apparatus for reducing jack-up rig jack-up resistance of claim 1,
the top of the innermost movable cylinder is closed, and the top of the other movable cylinders is open;
the top of the fixed cylinder is open and the bottom is closed.
4. A drilling platform, the drilling platform comprising:
a platform body;
the truss type pile leg comprises a pile leg truss body and pile shoes connected below the pile leg truss body;
a device for reducing pile pulling resistance of a jack-up rig according to any one of claims 1 to 3, said spacer being provided inside said leg truss body, said fixed barrel being fixedly connected above said shoe.
5. The drilling platform of claim 4, wherein the maximum length of the placeholder is not less than the mud penetration depth of the truss legs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810743646.7A CN108755645B (en) | 2018-07-09 | 2018-07-09 | Device for reducing pile pulling resistance of jack-up drilling platform and drilling platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810743646.7A CN108755645B (en) | 2018-07-09 | 2018-07-09 | Device for reducing pile pulling resistance of jack-up drilling platform and drilling platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108755645A CN108755645A (en) | 2018-11-06 |
| CN108755645B true CN108755645B (en) | 2024-02-02 |
Family
ID=63972790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810743646.7A Active CN108755645B (en) | 2018-07-09 | 2018-07-09 | Device for reducing pile pulling resistance of jack-up drilling platform and drilling platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108755645B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109868815B (en) * | 2019-03-26 | 2024-02-02 | 中国石油大学(北京) | Shoe type submarine self-disposable self-elevating drilling platform pile shoe and drilling platform |
| CN109868814B (en) * | 2019-03-26 | 2024-02-02 | 中国石油大学(北京) | Degradable self-elevating drilling platform pile shoe and drilling platform |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1160410A (en) * | 1966-09-07 | 1969-08-06 | Mindrill Ltd | Sealing Means for Core Drills. |
| US4072018A (en) * | 1975-04-30 | 1978-02-07 | Alvarez Calderon Alberto | Tunnel support structure and method |
| US4892280A (en) * | 1987-10-05 | 1990-01-09 | Hunting Oilfield Services Limited | Clamping devices for use with elongate members |
| CN202031093U (en) * | 2011-04-02 | 2011-11-09 | 中国石油大学(北京) | Extension pile shoe structure for drilling platform |
| CN102518099A (en) * | 2011-12-09 | 2012-06-27 | 中国石油大学(北京) | Method for determining insertion depth of offshore self-elevating drilling platform piles into mud |
| KR20120132045A (en) * | 2011-05-27 | 2012-12-05 | 대우조선해양 주식회사 | Jackup rig with length adjustable leg |
| KR20150053449A (en) * | 2013-11-08 | 2015-05-18 | 대우조선해양 주식회사 | Jack up rig having a retractable platform of escape chute |
| CN204457025U (en) * | 2015-02-10 | 2015-07-08 | 栗伟 | A kind of parking space occupy-place stake |
| CN106049392A (en) * | 2016-06-01 | 2016-10-26 | 河海大学 | Sleeve truss pile leg and pile shoe foundation |
| CN107476273A (en) * | 2017-09-05 | 2017-12-15 | 青岛理工大学 | Stepping type hydraulic driving lifting device of offshore nuclear power platform |
| CN108071357A (en) * | 2017-12-12 | 2018-05-25 | 中国海洋石油集团有限公司 | A kind of offshore drilling riser pipe lifting device |
| CN208486251U (en) * | 2018-07-09 | 2019-02-12 | 中国石油大学(北京) | It is a kind of for reducing the device and drilling platforms of self-elevating drilling platform pile extraction resistance |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2812338B1 (en) * | 2000-07-25 | 2002-11-08 | Total Fina Elf S A | METHOD AND DEVICE FOR ROTARY DRILLING OF A WELL |
| WO2010096086A1 (en) * | 2008-08-20 | 2010-08-26 | Foro Energy Inc. | Method and system for advancement of a borehole using a high power laser |
| FR2989097B1 (en) * | 2012-04-05 | 2016-10-14 | Dcns | OFF-SHORE WIND FOUNDATION, CORRESPONDING OFF-SHORE WIND TURBINE, AND PROCESS FOR IMPLEMENTING THE SAME |
| US9457875B2 (en) * | 2015-02-09 | 2016-10-04 | Graduate School At Shenzhen, Tsinghua University | Floating type self-lifting drilling platform |
-
2018
- 2018-07-09 CN CN201810743646.7A patent/CN108755645B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1160410A (en) * | 1966-09-07 | 1969-08-06 | Mindrill Ltd | Sealing Means for Core Drills. |
| US4072018A (en) * | 1975-04-30 | 1978-02-07 | Alvarez Calderon Alberto | Tunnel support structure and method |
| US4892280A (en) * | 1987-10-05 | 1990-01-09 | Hunting Oilfield Services Limited | Clamping devices for use with elongate members |
| CN202031093U (en) * | 2011-04-02 | 2011-11-09 | 中国石油大学(北京) | Extension pile shoe structure for drilling platform |
| KR20120132045A (en) * | 2011-05-27 | 2012-12-05 | 대우조선해양 주식회사 | Jackup rig with length adjustable leg |
| CN102518099A (en) * | 2011-12-09 | 2012-06-27 | 中国石油大学(北京) | Method for determining insertion depth of offshore self-elevating drilling platform piles into mud |
| KR20150053449A (en) * | 2013-11-08 | 2015-05-18 | 대우조선해양 주식회사 | Jack up rig having a retractable platform of escape chute |
| CN204457025U (en) * | 2015-02-10 | 2015-07-08 | 栗伟 | A kind of parking space occupy-place stake |
| CN106049392A (en) * | 2016-06-01 | 2016-10-26 | 河海大学 | Sleeve truss pile leg and pile shoe foundation |
| CN107476273A (en) * | 2017-09-05 | 2017-12-15 | 青岛理工大学 | Stepping type hydraulic driving lifting device of offshore nuclear power platform |
| CN108071357A (en) * | 2017-12-12 | 2018-05-25 | 中国海洋石油集团有限公司 | A kind of offshore drilling riser pipe lifting device |
| CN208486251U (en) * | 2018-07-09 | 2019-02-12 | 中国石油大学(北京) | It is a kind of for reducing the device and drilling platforms of self-elevating drilling platform pile extraction resistance |
Non-Patent Citations (2)
| Title |
|---|
| 海洋深水钻井新概念――"ABS"装置;代运锋;詹新宝;荆朝旗;翟高明;郭瑞;陈镇;;科技信息(第17期);全文 * |
| 钻完井一体式油套管头的研制与试验;张川;宋振华;郑泳;刘鸣;肖力彤;杜文波;刘义;;石油机械(第02期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108755645A (en) | 2018-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110004902B (en) | Skirt-type self-disposable puncture-resistant jack-up drilling platform pile shoe and drilling platform | |
| CA2828079C (en) | Skirted foundation for penetrating soft material | |
| NL2005755C2 (en) | Floating marine structure. | |
| KR102033794B1 (en) | Offshore wind turbine foundation, corresponding offshore wind turbine and method for their installation on site | |
| CN108755645B (en) | Device for reducing pile pulling resistance of jack-up drilling platform and drilling platform | |
| KR101281601B1 (en) | Suction pile and construction method of such suction pile by blow of weight | |
| US4372707A (en) | Pile installation and removal mechanisms in off-shore rigs and method of using same | |
| CN208486251U (en) | It is a kind of for reducing the device and drilling platforms of self-elevating drilling platform pile extraction resistance | |
| CN109868815B (en) | Shoe type submarine self-disposable self-elevating drilling platform pile shoe and drilling platform | |
| CN113309080B (en) | Construction method of double-casing cast-in-situ bored pile | |
| CN109868814B (en) | Degradable self-elevating drilling platform pile shoe and drilling platform | |
| CN210341911U (en) | Shoe type seabed self-disposable self-elevating drilling platform pile shoe and drilling platform | |
| JPS6024279B2 (en) | Method and apparatus for extracting oil or gas from the seabed in deep water | |
| CN209854712U (en) | Degradable self-elevating drilling platform pile shoe and drilling platform | |
| CN210140818U (en) | Skirt type self-abandoning puncture-resistant self-elevating drilling platform pile shoe and drilling platform | |
| CN106368199B (en) | A kind of band brill hangs the self-propelled islands and reefs foundation construction platform of equipment | |
| CN210341912U (en) | Seabed is abandoned recoverable from rising formula drilling platform pile shoe and drilling platform | |
| CN113668514B (en) | Concrete pouring construction method for ultra-large-diameter rotary pile for preventing steel reinforcement cage floating cage | |
| NO309990B1 (en) | Offshore oil drilling or production platform | |
| KR101134025B1 (en) | Method for constructing a foundation using a open caisson | |
| CN109881670B (en) | Submarine self-disposable recyclable pile shoe of jack-up drilling platform and drilling platform | |
| CN206970086U (en) | A kind of hanging apparatus | |
| CN113668531A (en) | Anti-slip pile control device used in installation of ocean large-diameter tubular pile | |
| KR102177844B1 (en) | guide anchor for constructing file and construction method | |
| CN217681581U (en) | Underwater oversized-diameter annular groove construction system |
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 |