CN110004902B - Skirt-type self-disposable puncture-resistant jack-up drilling platform pile shoe and drilling platform - Google Patents
Skirt-type self-disposable puncture-resistant jack-up drilling platform pile shoe and drilling platform Download PDFInfo
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- CN110004902B CN110004902B CN201910231604.XA CN201910231604A CN110004902B CN 110004902 B CN110004902 B CN 110004902B CN 201910231604 A CN201910231604 A CN 201910231604A CN 110004902 B CN110004902 B CN 110004902B
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- 238000005553 drilling Methods 0.000 title claims abstract description 40
- 239000002689 soil Substances 0.000 claims abstract description 28
- 230000002093 peripheral effect Effects 0.000 claims description 21
- 238000004364 calculation method Methods 0.000 claims description 11
- 230000005484 gravity Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
- 238000001179 sorption measurement Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 102000002322 Egg Proteins Human genes 0.000 description 1
- 108010000912 Egg Proteins Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000003278 egg shell Anatomy 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/72—Pile shoes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
- E02D9/02—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof by withdrawing
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- 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
Abstract
The invention discloses a skirt-type self-supporting anti-puncture self-elevating drilling platform pile shoe and a drilling platform, wherein the skirt-type self-supporting anti-puncture self-elevating drilling platform pile shoe comprises a pile shoe body (1) and a skirt-type pile shoe block body (2), the central line of the pile shoe body (1) and the central line of the skirt-type pile shoe block body (2) are in an upright state, the skirt-type pile shoe block body (2) is sleeved outside the pile shoe body (1), and the pile shoe body (1) can move upwards and be separated from the skirt-type pile shoe block body (2). This skirt can be from abandoning anti puncture jack-up drilling platform pile shoe can make the soil body bearing capacity that receives at same well site department platform bigger and the spud leg goes into mud degree of depth shallower, when the spud leg goes into the deep mud degree of depth and leads to the pile pulling operation difficulty, can take off skirt pile shoe block through the effect of haulage rope in order to reach the purpose that reduces the spud leg dead weight for the resistance that pile pulling operation received is littleer, and pile pulling operation is more smooth.
Description
Technical Field
The invention relates to the field of ocean oil and gas field development equipment, in particular to a skirt-type self-disposable puncture-resistant jack-up drilling platform pile shoe or a drilling platform.
Background
Along with the indication of increasing the oil and gas resource exploration and development force of the country, each large petroleum enterprise gradually increases the exploration and development of the land and offshore oil and gas block of the country so as to ensure the national energy safety. The oil and gas exploration and development of the marine shallow water area cannot leave the operation support of the marine self-elevating drilling platform, and the pile inserting and pile pulling operation of the self-elevating drilling platform are two extremely critical links in the offshore operation process. The safety of the platform is closely related to the bearing capacity of the soil body at the lower part during pile inserting operation, the bearing capacity of the soil body to the upper platform is directly related to the property of the soil body and the size of the pile shoe of the platform, and the larger size of the pile shoe can ensure larger stressed area, so that the soil body can provide stronger bearing capacity to ensure the operation safety of the platform, and meanwhile, the depth of the pile legs for inserting the soil is smaller; the operation difficulty of the platform is closely related to lower soil parameters, pile leg dead weight and pile leg mud depth during pile pulling operation, and relatively smaller pile pulling resistance can be ensured by smaller pile leg dead weight and smaller pile leg mud depth, so that the platform is easier to pull piles. However, in the actual working process, pile inserting safety and pile pulling smoothness of the platform are two targets which are difficult to achieve simultaneously. For soil reasons, in most cases, the pile leg needs to be deep into mud to ensure strong bearing capacity, and the pile pulling resistance caused by the deep mud entering depth is high, so that pile pulling is difficult.
Chinese patent CN206986884U, publication date 2018, 2 and 9, discloses a detachable pile shoe suitable for truss type pile leg, which increases the maximum cross-sectional area of the original pile shoe through the ring blocks connected by bolts to increase the bearing capacity of the pile shoe, and increases the rapid mud-entering effect of the pile shoe by increasing the pile tip height, but the bolts between the ring blocks and the body of the detachable pile shoe bear shear strength, and the overall stability is relatively poor.
Disclosure of Invention
In order to solve the problem of poor stability of the existing detachable pile shoe, the invention provides the skirt type self-disposable anti-puncture self-elevating drilling platform pile shoe and the drilling platform. Meanwhile, after the skirt-type pile shoe block is matched with the original pile shoe, the pile tip height of the pile shoe is reduced, so that the pile shoe has stronger puncture resistance when in operation in a critical hard interlayer stratum, and has weaker requirements on soil conditions of an operation sea area.
The technical scheme adopted for solving the technical problems is as follows: the skirt-type self-disposable puncture-resistant jack-up drilling platform pile shoe comprises a pile shoe body and a skirt-type pile shoe block body, wherein the central line of the pile shoe body and the central line of the skirt-type pile shoe block body are in an upright state, the skirt-type pile shoe block body is sleeved outside the pile shoe body, and the pile shoe body can move upwards and be separated from the skirt-type pile shoe block body;
the pile shoe body is of a block-shaped structure, the longitudinal section of the pile shoe body is octagonal, and the pile shoe body comprises a top surface, an upper inclined surface, an outer peripheral surface, a lower inclined surface and a bottom surface which are sequentially connected from top to bottom;
the skirt-type pile shoe block is of an annular structure, and the longitudinal section of the skirt-type pile shoe block comprises an inner ring section and an outer ring section which are sequentially connected from inside to outside along the diameter direction of the skirt-type pile shoe block;
the inner side surface of the outer ring section is in matched connection with the outer peripheral surface of the pile shoe body, the upper surface of the inner ring section is in matched connection with the lower inclined surface of the pile shoe body, and the lower surface of the skirt-type pile shoe block is higher than the bottom surface of the pile shoe body.
The top surface, the bottom surface and the lower surface are mutually parallel, the central line of the pile shoe body is vertical to the top surface, the diameter of the upper end of the outer peripheral surface is the same as the diameter of the lower end of the outer peripheral surface, the longitudinal section of the inner ring section is a right triangle, and the longitudinal section of the outer ring section is a right trapezoid.
The pile shoe body is detachably connected with the skirt-type pile shoe block body through a plurality of pins, the pins are uniformly arranged at intervals along the circumference of the skirt-type pile shoe block body, pin inserting holes are formed in the outer circumferential surface of the pile shoe body, and pin installation through holes are formed in the upper portion of the outer ring section.
When the depth of the predicted pile leg into mud is smaller and the pile pulling operation does not need to release the skirt-shaped pile shoe block;
the number of pins is calculated as:
when the depth of the predicted pile leg into mud is deeper and the skirt-shaped pile shoe block is required to be released during pile pulling operation;
the number of pins is calculated as:
l is the number of pins in one, rounded to a reserved integer;
w is the gravity of a skirt type pile shoe block body, and the unit is N;
f is the soil adsorption force born by the skirt-type pile shoe block body, and the unit is N;
F s the shear force of soil body is N, which is the unit of shear force of soil body received by the skirt type pile shoe block;
F r the unit of the friction force of the soil body, which is born by the skirt-type pile shoe block body, is N;
n is the shear strength of the pin and is expressed in N/m 2 ；
D is the diameter of the pin, and the unit is m;
n is a safety coefficient, has no unit and has a value of more than or equal to 1.5.
The calculation formula of the distance from the lower end of the outer peripheral surface to the lower surface of the skirt-type pile shoe block is as follows:
h 3 the unit is m which is the distance from the lower end of the peripheral surface to the lower surface of the skirt-type pile shoe block;
F w the unit is N for the maximum pre-pressing load of the platform or the maximum gravity born by the pile shoe in the subsequent operation process;
s is the shear strength of a skirt type pile shoe block body, and the unit is N/m 2 ；
m safety coefficient, no unit, and the value is more than or equal to 1.5.
The skirt-type self-supporting anti-puncture self-elevating drilling platform pile shoe further comprises a plurality of traction ropes, the number of the traction ropes is the same as that of the pins, and the lower ends of the traction ropes are connected and fixed with the outer ends of the pins in a one-to-one correspondence mode.
The skirt type self-disposable puncture-resistant jack-up drilling platform pile shoe further comprises a straight pipe and a plurality of inclined pipes, the number of the inclined pipes is the same as that of the pins, the upper ends of the inclined pipes are correspondingly connected with the lower ends of the straight pipe, the lower ends of the inclined pipes are in one-to-one correspondence with the outer ends of the pins, and the traction ropes are sleeved in the straight pipe and the inclined pipes.
The lower extreme of inclined tube is located the top of pin outer end, and the lower extreme of inclined tube is equipped with tip fixed pulley outward, and the haulage rope is connected with tip fixed pulley, along the diameter direction of shoe body, and the distance of tip fixed pulley to the pin outer end is greater than the length of pin.
Skirt formula can be from penetrating resistant jack-up drilling platform pile shoe still includes upright truss, and the straight tube cover is located in the truss, is equipped with a plurality of intraductal fixed pulleys of managing in the inclined tube, and the upper end of truss is equipped with top fixed pulley, and the haulage rope is connected with intraductal fixed pulley and top fixed pulley, and the inclined tube passes through bracing piece and pile shoe body coupling to be fixed, and the straight tube passes through bracing piece and truss connection to be fixed.
The bottom of the drilling platform is provided with the skirt-type self-disposable puncture-resistant jack-up drilling platform pile shoe.
The beneficial effects of the invention are as follows: this skirt can be from abandoning anti puncture jack-up drilling platform pile shoe can make the soil body bearing capacity that receives at same well site department platform bigger and the spud leg goes into mud degree of depth shallower, when the spud leg goes into the deep mud degree of depth and leads to the pile pulling operation difficulty, can take off skirt pile shoe block through the effect of haulage rope in order to reach the purpose that reduces the spud leg dead weight for the resistance that pile pulling operation received is littleer, and pile pulling operation is more smooth.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
Figure 1 is a schematic view of a skirt-type disposable puncture-resistant jack-up rig shoe according to the present invention.
Fig. 2 is a cross-sectional view taken along A-A in fig. 1.
Fig. 3 is a schematic longitudinal section of the pile shoe body.
Fig. 4 is a schematic longitudinal section of a skirt pile shoe block.
Fig. 5 is a schematic diagram of the fit of the shoe body with the skirt shoe block.
Fig. 6 is a schematic view of the lower end of the chute.
1. A pile shoe body; 2. skirt type pile shoe blocks; 3. a pin; 4. a self-discarding module; 5. truss;
11. a top surface; 12. an upper inclined plane; 13. an outer peripheral surface; 14. a lower inclined plane; 15. a bottom surface;
21. an inner ring section; 22. an outer ring section; 23. an inner side surface; 24. an upper surface; 25. a lower surface; 26. an outer side surface;
41. a chute; 42. a pulley is fixed inside the tube; 43. a traction rope; 44. a support rod; 45. a straight pipe; 46. a top fixed pulley; 47. an end fixed pulley.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
The skirt-type self-disposable puncture-resistant jack-up drilling platform pile shoe comprises a pile shoe body 1 and a skirt-type pile shoe block 2, wherein the center line of the pile shoe body 1 and the center line of the skirt-type pile shoe block 2 are in an upright state, the skirt-type pile shoe block 2 is sleeved outside the pile shoe body 1, and the pile shoe body 1 can move upwards and is separated from the skirt-type pile shoe block 2; the pile shoe body 1 is of a block structure, the longitudinal section of the pile shoe body 1 is octagonal, and the pile shoe body 1 comprises a top surface 11, an upper inclined surface 12, an outer peripheral surface 13, a lower inclined surface 14 and a bottom surface 15 which are sequentially connected from top to bottom; the skirt type pile shoe block 2 is of an annular structure, and the longitudinal section of the skirt type pile shoe block 2 comprises an inner ring section 21 and an outer ring section 22 which are sequentially connected from inside to outside along the diameter direction of the skirt type pile shoe block 2; the inner side surface 23 of the outer ring section 22 is in matching connection with the outer peripheral surface 13 of the pile shoe body 1 (i.e. the surface to surface is completely fitted), the upper surface 24 of the inner ring section 21 is in matching connection with the lower inclined surface 14 of the pile shoe body 1 (i.e. the surface to surface is completely fitted), and the lower surface 25 of the skirt type pile shoe body 2 is higher than the bottom surface 15 of the pile shoe body 1, as shown in fig. 1 to 5.
In this embodiment, the center line of the pile shoe body 1 coincides with the center line of the skirt-type pile shoe block 2, the pile shoe body 1 has a longitudinal section of octagon, the pile shoe body 1 has a circular or square top view, the pile shoe body 1 is a metal block, and the pile shoe body 1 has the largest diameter at the outer peripheral surface 13. The skirt-type pile shoe block 2 is a circular or square ring-shaped top view, and the skirt-type pile shoe block 2 is a ring-shaped block. The skirt type pile shoe block 2 may be of a hollow structure or a solid structure, and when the skirt type pile shoe block 2 is of a hollow structure, the skirt type pile shoe block 2 may be made of steel; when the skirt pile shoe block 2 is of a solid structure, the skirt pile shoe block 2 may be optionally cast of concrete.
In this embodiment, the top surface 11, the bottom surface 15 and the lower surface 25 are parallel to each other, the bottom surface 15 is parallel to the horizontal plane, the center line of the pile shoe body 1 is perpendicular to the top surface 11, the diameter of the upper end of the outer peripheral surface 13 is the same as the diameter of the lower end of the outer peripheral surface 13, the diameter of the outer peripheral surface 13 is d1 as the diameter of the inner side surface 23 of the outer ring section 22, the diameter of the outer side surface 26 of the outer ring section 22 is d2, and d2 is larger than d1. The longitudinal section of the inner ring section 21 is a right triangle, the longitudinal section of the outer ring section 22 is a right trapezoid, the lower surface of the inner ring section 21 and the lower surface of the outer ring section 22 are positioned in the same horizontal plane, and the upper inclined plane 12 and the upper surface of the outer ring section 22 are positioned in the same conical plane.
In this embodiment, the pile shoe body 1 is detachably connected with the skirt-type pile shoe block 2 through a plurality of pins 3, the pins 3 are uniformly arranged at intervals along the circumferential direction of the skirt-type pile shoe block 2, pin inserting holes are formed in the outer circumferential surface 13 of the pile shoe body 1, and pin mounting through holes are formed in the upper portion of the outer ring section 22. The pin 3 passes through the pin installation through hole, the inner end of the pin 3 is positioned in the pin inserting hole of the pile shoe body 1, and the outer end of the pin 3 is positioned outside the skirt-type pile shoe block 2. The pin 3 is in transition fit with a pin inserting hole on the pile shoe body 1, and the pin 3 is in clearance fit with a pin mounting through hole on the outer ring section 22.
In the present embodiment, the number of pins 3 is calculated using the following calculation formula:
when the depth of the predicted pile leg into mud is smaller (which can be understood as the current depth of the platform into mud, and pile pulling and withdrawing are completed in the later period of operation), the platform can perform pile pulling operation smoothly, namely the phenomenon that the pile pulling of the platform is difficult does not occur, and the skirt-shaped pile shoe block 2 is not required to be released in the pile pulling operation;
the number of pins 3 is calculated as:
when the depth of the predicted pile leg into mud is deep (which can be understood as that the current platform has large depth of the mud, so that the platform can not smoothly pull out the pile and withdraw the pile due to limited pile pulling capacity of the platform, the pile pulling capacity of the platform is related to the water capacity and the bottom soil property of the platform, platform parameters, pile shoe pile punching capacity, self weight of the platform and the like), and the skirt type pile shoe block 2 needs to be released during pile pulling operation;
the number of pins 3 is calculated as:
l is the number of pins 3 in one, rounded to a reserved integer;
w is the gravity of the skirt type pile shoe block body 2, and the unit is N;
f is the soil adsorption force born by the skirt type pile shoe block 2, and the unit is N;
F s the shear force of soil body, which is applied to the skirt-type pile shoe block 2, is represented by N;
F r the unit of the friction force of the soil body borne by the skirt-type pile shoe block body 2 is N;
n is the shear strength of the pin 3, and the unit is N/m 2 ；
D is the diameter of the pin 3, and the unit is m;
n is a safety coefficient, has no unit and has a value of more than or equal to 1.5.
Therein, F, F s And F r The concrete calculation method of (2) can refer to the API specification and the existing calculation method, such as the calculation of pile pulling resistance in section Menglan, zhang Aixia, wang Jianjun and Song Linsong, which are the numerical calculation method for pile pulling resistance prediction of the self-elevating drilling platform, in monograph of pile pulling resistance calculation in self-elevating drilling platform, namely Jiang Wei, wang Shunwen, yang Jin and Liu Shujie.
The pins 3 which are uniformly arranged at intervals are inserted into pin holes reserved on the pile shoe body 1 and the skirt type pile shoe block 2, and the pile shoe body 1 and the skirt type pile shoe block 2 are longitudinally limited: in the process of the platform pile leg falling, the pins are mainly used for bearing the gravity of the skirt-type pile shoe block 2; when the platform is withdrawn and pile pulled without releasing the skirt-type pile shoe block 2, the pins 3 mainly bear the gravity of the skirt-type pile shoe block 2, the soil adsorption force born by the skirt-type pile shoe block, the soil shearing force born by the skirt-type pile shoe block, the soil friction force born by the skirt-type pile shoe block and other forces; the skirt-type pile shoe block 2 is circumscribed on the outer side of the pile shoe body 1, so that the pile shoe body 1 is limited in the horizontal direction.
In the present embodiment, the calculation formula of the distance from the lower end of the outer peripheral surface 13 to the lower surface 25 of the skirt shoe block 2 is:
h3 is the distance from the lower end of the outer circumferential surface 13 to the lower surface 25 of the skirt shoe block 2, in m;
F w the unit is N for the maximum pre-pressing load of the platform or the maximum gravity born by the pile shoe in the subsequent operation process;
s is the shear strength of the skirt type pile shoe block 2, and the unit is N/m 2 ；
m safety coefficient, no unit, and the value is more than or equal to 1.5.
The maximum pre-pressing load of the platform or the maximum gravity born by the pile shoe in the subsequent operation process is fixed (the post-transformation influence of the platform is not included), and the maximum pre-pressing load of the platform or the maximum gravity born by the pile shoe in the subsequent operation process can be inquired according to a ship operating manual of each platform. The shear strength of the skirt shoe block 2 is determined by its material itself, referring to the strength of its material.
In fig. 4, h2 is the distance between the lower end of the outer peripheral surface 13 and the bottom surface 15, h1=h2-h 3. After the skirt-type pile shoe block 2 is matched with the pile shoe body 1, the diameter of the pile shoe is increased from d1 to d2, so that the contact area between the pile shoe and the lower seabed soil body is larger, and the bearing capacity of the pile shoe is stronger; meanwhile, after the skirt-type pile shoe block 2 is additionally arranged, the pile tip height of the pile shoe is reduced from h2 to h1, so that the pile shoe of the platform is guaranteed to have a certain pile tip height, the pile shoe can be conveniently put in, the situation that the pile shoe quickly damages eggshell stratum due to the overlarge pile tip height is avoided, and the penetration risk of the pile shoe in a critical thickness hard interlayer is reduced.
In this embodiment, the skirt-type self-disposable anti-puncture jack-up drilling platform pile shoe further includes a plurality of traction ropes 43, the number of the traction ropes 43 is the same as that of the pins 3, and the lower ends of the traction ropes 43 are connected and fixed with the outer ends of the pins 3 in a one-to-one correspondence manner. By the pulling action of the pulling rope 43, a plurality of pins 3 for fixing the shoe body 1 and the skirt shoe block 2 can be pulled out.
Specifically, the lower end of the inclined tube 41 is located above the outer end of the pin 3 (the lower end of the inclined tube 41 can be slightly higher than the outer end of the pin 3), the end fixed pulley 47 is arranged outside the lower end of the inclined tube 41, the traction rope 43 is connected with the end fixed pulley 47, and the distance from the end fixed pulley 47 to the outer end of the pin 3 is greater than the length of the pin 3 along the diameter direction of the pile shoe body 1. When the traction rope 43 is pulled in this way, the plurality of pins 3 in the pile shoe body 1 and the skirt-type pile shoe block 2 can be pulled out, and the separation between the pile shoe body 1 and the skirt-type pile shoe block 2 can be further realized, as shown in fig. 6. In addition, the distance from the end fixed pulley 47 to the center line of the skirt-type pile shoe block 2 is preferably smaller than the radius of the outer side surface 26 of the skirt-type pile shoe block 2, so as to reduce the resistance of the skirt-type self-supporting puncture-resistant self-elevating drilling platform pile shoe to sea water and sea floor soil, which is applied by the inclined pipe 41, the end fixed pulley 47 and the traction rope 43 during the running-in process.
In this embodiment, the skirt-type self-disposable anti-puncture jack-up drilling platform pile shoe further includes a straight pipe 45 and a plurality of inclined pipes 41, the number of the inclined pipes 41 is the same as that of the pins 3, the inclined pipes 41 incline along the upper inclined plane 12 of the pile shoe body 1, the upper ends of the inclined pipes 41 are correspondingly connected with the lower ends of the straight pipe 45, the straight pipe 45 is in an upright state, the lower ends of the inclined pipes 41 are in one-to-one correspondence with the outer ends of the pins 3, and the traction ropes 43 are sleeved in the straight pipe 45 and the inclined pipes 41, namely, each traction rope 43 has a section positioned in the inclined pipe 41 and also has a section positioned in the straight pipe 45.
In this embodiment, the skirt-type self-disposable anti-puncture jack-up drilling platform pile shoe further comprises a vertical truss 5, a straight pipe 45 is sleeved in the truss 5, a plurality of pipe inner positioning pulleys 42 are arranged at intervals between two ends of the inside of the inclined pipe 41, a top fixed pulley 46 is arranged at the upper end of the truss 5, a traction rope 43 is connected with the pipe inner positioning pulleys 42 and the top fixed pulley 46, the inclined pipe 41 is fixedly connected with the pile shoe body 1 through a supporting rod 44, and the straight pipe 45 is fixedly connected with the truss 5 through the supporting rod 44.
In the present invention, the inclined tube 41, the in-tube pulley 42, the pulling rope 43, the supporting rod 44, the straight tube 45 and the top fixed pulley 46 may be referred to as the disposable module 4, i.e., the disposable module 4 contains the inclined tube 41, the in-tube pulley 42, the pulling rope 43, the supporting rod 44, the straight tube 45 and the top fixed pulley 46. Truss 5 is located pile shoe body 1's upper end and rather than up end fixed connection, and through a plurality of bracing pieces 44 welded fastening to the straight tube 45 play the spacing effect between straight tube 45 and the truss 5.
In this embodiment, the fixed pulleys 42 are uniformly and symmetrically arranged at intervals on the inner wall of the inclined tube 41 and the uppermost port of the straight tube 45, the fixed pulley 46 on the top is fixed on the top end of the truss 5, and the straight tube 45 is positioned in the center of the truss 5; one section of the hauling rope 43 is positioned in the inclined tube 41 and matched with the in-tube fixed pulley 42 to change the direction of force, the bottom of the hauling rope is fixedly connected with the tail end of each pin 3, the number of the hauling rope is identical to that of the pins 3, the top ends of the hauling rope are converged together to be connected with the other section of hauling rope, and the section of hauling rope is positioned in the straight tube 45 and matched with the top end outlet of the straight tube 45 and the top fixed pulley 46 at the upper end of the truss.
By pulling the traction rope 43 on the platform, a plurality of pins 3 positioned in pin holes of the pile shoe body 1 and the skirt-type pile shoe block 2 are pulled out, so that the skirt-type pile shoe block 2 and the pile shoe body 1 are released, when a pile leg is lifted up, the pile shoe body 1 is separated from the skirt-type pile shoe block 2, and the skirt-type pile shoe block 2 is temporarily left in a pile shoe footprint on the seabed, so that pile pulling resistance of the platform is reduced, and pile pulling operation is easier.
The quantity of the inclined tubes 41 is consistent with the quantity of the pins 3, the inclined tubes 41 are uniformly arranged at intervals along the side face of the pile shoe body and fixed through a plurality of supporting rods 44, the tail ends of the inclined tubes 41 are inclined ports (the upper side of the tail end ports is longer than the lower side) and are used for protecting traction ropes 43 connected with the pins and preventing the traction ropes 43 from rubbing against the lower sides of the ports of the inclined tubes, and a plurality of inner tube positioning pulleys 42 are arranged on the inner walls of the two ports of each inclined tube and the inner wall of the middle part of each inclined tube 41 so as to change the stress direction of the traction ropes 43 and prevent the traction ropes from rubbing against the end faces of the inclined tubes 41.
The following describes a drilling platform, the bottom of which is provided with the skirt-type self-disposable anti-puncture jack-up drilling platform pile shoe.
The working process of the skirt type self-disposable self-elevating drilling platform pile shoe is introduced below, and comprises the following steps:
step 1, setting the pile shoe body 1 in the skirt type pile shoe block 2, and aligning the pile shoe body 1 with pin holes of the skirt type pile shoe block 2;
step 2, inserting a plurality of pins 3 into pin holes of the pile shoe body 1 and the skirt-type pile shoe block 2;
step 3, fixedly connecting the lower ends of the plurality of sections of traction ropes 43 positioned in the inclined tube 41 with the outer ends of the pins 3 one by one respectively;
step 4, lowering pile legs for ballasting operation, and comprehensively analyzing whether the skirt-type pile shoe block 2 needs to be released during the evacuation operation of the platform according to pile pulling capacity of the platform, mud entering depth of the pile legs, seabed soil parameters and the like;
step 5, if the analysis shows that the pile pulling resistance is high, the pulling rope 43 is pulled on the platform to pull out the pins 3 in the pin holes of the pile shoe body 1 and the skirt-type pile shoe body 2, so that the skirt-type pile shoe body 2 and the pile shoe body 1 are released, when the pile leg is lifted, the pile shoe body 1 and the skirt-type pile shoe body 2 are separated, and the skirt-type pile shoe body 2 is temporarily left in the pile shoe foot print on the seabed, so that the pile pulling resistance is reduced, and the pile pulling operation is easier.
By using the skirt-type self-disposable self-elevating drilling platform pile shoe and the drilling platform, the bearing capacity of the soil body born by the platform at the same well position is larger, the pile leg mud entering depth is shallower, and when the pile leg mud entering depth is deeper, the skirt-type pile shoe block can be released through the action of the traction rope to achieve the purpose of reducing the pile leg dead weight, so that the resistance born by the pile pulling operation is smaller, and the pile pulling operation is smoother.
The foregoing description of the embodiments of the invention is not intended to limit the scope of the invention, so that the substitution of equivalent elements or equivalent variations and modifications within the scope of the invention shall fall within the scope of the patent. In addition, the technical characteristics and technical characteristics, the technical characteristics and technical scheme and the technical scheme can be freely combined for use.
Claims (2)
1. The skirt-type self-disposable puncture-resistant self-elevating drilling platform pile shoe is characterized by comprising a pile shoe body (1) and a skirt-type pile shoe block (2), wherein the central line of the pile shoe body (1) and the central line of the skirt-type pile shoe block (2) are in an upright state, the skirt-type pile shoe block (2) is sleeved outside the pile shoe body (1), and the pile shoe body (1) can move upwards and be separated from the skirt-type pile shoe block (2);
the pile shoe body (1) is of a block structure, the longitudinal section of the pile shoe body (1) is octagonal, and the pile shoe body (1) comprises a top surface (11), an upper inclined surface (12), an outer peripheral surface (13), a lower inclined surface (14) and a bottom surface (15) which are sequentially connected from top to bottom;
the skirt-type pile shoe block body (2) is of an annular structure, and the longitudinal section of the skirt-type pile shoe block body (2) comprises an inner ring section (21) and an outer ring section (22) which are sequentially connected from inside to outside along the diameter direction of the skirt-type pile shoe block body (2);
the inner side surface (23) of the outer ring section (22) is in matched connection with the outer peripheral surface (13) of the pile shoe body (1), the upper surface (24) of the inner ring section (21) is in matched connection with the lower inclined surface (14) of the pile shoe body (1), and the lower surface (25) of the skirt-type pile shoe block (2) is higher than the bottom surface (15) of the pile shoe body (1);
the top surface (11), the bottom surface (15) and the lower surface (25) are mutually parallel, the central line of the pile shoe body (1) is perpendicular to the top surface (11), the diameter of the upper end of the outer peripheral surface (13) is the same as the diameter of the lower end of the outer peripheral surface (13), the longitudinal section of the inner ring section (21) is a right triangle, and the longitudinal section of the outer ring section (22) is a right trapezoid;
the pile shoe body (1) is detachably connected with the skirt-type pile shoe block (2) through a plurality of pins (3), the pins (3) are uniformly arranged at intervals along the circumferential direction of the skirt-type pile shoe block (2), pin inserting holes are formed in the outer circumferential surface (13) of the pile shoe body (1), and pin mounting through holes are formed in the upper part of the outer ring section (22);
when the depth of the predicted pile leg into mud is smaller and the pile pulling operation does not need to release the skirt-shaped pile shoe block (2);
the number calculation formula of the pins (3) is as follows:
when the depth of the predicted pile leg into mud is deeper and the skirt-shaped pile shoe block (2) needs to be released during pile pulling operation;
the number calculation formula of the pins (3) is as follows:
l is the number of pins (3), in units of one, rounded to a reserved integer;
w is the gravity of the skirt type pile shoe block body (2), and the unit is N;
f is the soil adsorption force born by the skirt-type pile shoe block (2), and the unit is N;
F s the shear force of soil body is applied to the skirt-type pile shoe block (2), and the unit is N;
F r the unit of the friction force of the soil body borne by the skirt-type pile shoe block body (2) is N;
n is the shear strength of the pin (3) and is given in N/m 2 ；
D is the diameter of the pin (3) and the unit is m;
n is a safety coefficient, no unit exists, and the value is more than or equal to 1.5;
the calculation formula of the distance from the lower end of the outer peripheral surface (13) to the lower surface (25) of the skirt-type pile shoe block (2) is as follows:
h 3 the unit is m which is the distance from the lower end of the outer peripheral surface (13) to the lower surface (25) of the skirt-type pile shoe block (2);
F w the unit is N for the maximum pre-pressing load of the platform or the maximum gravity born by the pile shoe in the subsequent operation process;
s is the shear strength of a skirt type pile shoe block body (2), and the unit is N/m 2 ；
m is a safety coefficient, no unit exists, and the value is more than or equal to 1.5;
the skirt-type self-disposable anti-puncture self-elevating drilling platform pile shoe further comprises a plurality of traction ropes (43), the number of the traction ropes (43) is the same as that of the pins (3), and the lower ends of the traction ropes (43) are connected and fixed with the outer ends of the pins (3) in a one-to-one correspondence manner;
the skirt-type self-elevating drilling platform pile shoe capable of achieving self-abandoning and puncture resistance further comprises straight pipes (45) and a plurality of inclined pipes (41), the number of the inclined pipes (41) is the same as that of the pins (3), the upper ends of the inclined pipes (41) are correspondingly connected with the lower ends of the straight pipes (45), the lower ends of the inclined pipes (41) are in one-to-one correspondence with the outer ends of the pins (3), and traction ropes (43) are sleeved in the straight pipes (45) and the inclined pipes (41);
the lower end of the inclined tube (41) is positioned above the outer end of the pin (3), an end fixed pulley (47) is arranged outside the lower end of the inclined tube (41), the traction rope (43) is connected with the end fixed pulley (47), and the distance from the end fixed pulley (47) to the outer end of the pin (3) is larger than the length of the pin (3) along the diameter direction of the pile shoe body (1);
skirt formula is can be from penetrating and jack-up drilling platform pile shoe is still including upright truss (5), in truss (5) is located to straight tube (45) cover, be equipped with a plurality of intraductal fixed pulleys (42) in inclined tube (41), the upper end of truss (5) is equipped with top fixed pulley (46), haulage rope (43) are connected with intraductal fixed pulleys (42) and top fixed pulley (46), inclined tube (41) are connected fixedly through bracing piece (44) and pile shoe body (1), straight tube (45) are connected fixedly through bracing piece (44) and truss (5).
2. A drilling platform, characterized in that the bottom of the drilling platform is provided with the skirt-type self-disposable anti-puncture jack-up drilling platform pile shoe in claim 1.
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| CN201910231604.XA CN110004902B (en) | 2019-03-26 | 2019-03-26 | Skirt-type self-disposable puncture-resistant jack-up drilling platform pile shoe and drilling platform |
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| CN110004902B true CN110004902B (en) | 2024-02-02 |
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| CN111733807A (en) * | 2020-07-01 | 2020-10-02 | 深圳钜联锚杆技术有限公司 | A awl section of thick bamboo and concrete pile for concrete pile |
| CN111733806A (en) * | 2020-07-01 | 2020-10-02 | 深圳钜联锚杆技术有限公司 | A cone and concrete pile for concrete pile |
| CN112267460B (en) * | 2020-09-03 | 2021-12-17 | 中海油能源发展股份有限公司 | Active puncturing pile shoe structure of self-elevating drilling platform and operation method thereof |
| CN112942336A (en) * | 2021-04-20 | 2021-06-11 | 中海石油(中国)有限公司 | Modular apron board pile shoe of self-elevating drilling platform and drilling platform |
| CN113463628B (en) * | 2021-05-26 | 2022-06-07 | 中海石油(中国)有限公司 | Construction method for stably puncturing pile shoe of self-elevating platform |
| CN116791555B (en) * | 2023-08-29 | 2023-11-17 | 西南石油大学 | Drilling platform pile shoe structure |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9208257D0 (en) * | 1991-11-28 | 1992-05-27 | Pilecon Engineering Berhad | Installing pre-founded columns |
| US5425429A (en) * | 1994-06-16 | 1995-06-20 | Thompson; Michael C. | Method and apparatus for forming lateral boreholes |
| JP2004285698A (en) * | 2003-03-24 | 2004-10-14 | M Ee T Kouzou Sekkei:Kk | Deformed precast pile |
| CN102226344A (en) * | 2011-04-02 | 2011-10-26 | 中国石油大学(北京) | Pile shoe structure for retractable drilling platforms |
| 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 |
| CN203049602U (en) * | 2012-11-23 | 2013-07-10 | 浙江大学 | Offshore platform pile leg capable of realizing convenient pile unplugging and installing platform provided with pile leg |
| KR101363487B1 (en) * | 2013-04-22 | 2014-02-14 | 무성토건 주식회사 | High performance composite nail |
| JP2015037925A (en) * | 2013-07-18 | 2015-02-26 | 半蔵 門脇 | Self-elevating working barge |
| WO2015135471A1 (en) * | 2014-03-14 | 2015-09-17 | 香港强光海洋工程有限公司 | Hollow cylindrical pier for fixing offshore platform structure to bed and method of installing and constructing same |
| CN104947671A (en) * | 2014-03-25 | 2015-09-30 | 上海外高桥造船有限公司 | Wharf pile pulling analytical method for self-elevating drilling platform |
| WO2016127477A1 (en) * | 2015-02-09 | 2016-08-18 | 清华大学深圳研究生院 | Floating type self-elevating drilling platform |
| CN106284332A (en) * | 2015-05-30 | 2017-01-04 | 江苏扬泰中天管桩有限公司 | Tenon joint type concrete uplift pile |
| WO2018072582A1 (en) * | 2016-10-20 | 2018-04-26 | 南通振华重型装备制造有限公司 | Pile leg utilized in ju2000e self-elevating drilling platform, and method of installing pile shoe |
| CN109209301A (en) * | 2018-11-12 | 2019-01-15 | 中国海洋石油集团有限公司 | A kind of extended horizontal well floating screen assembly |
| 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 |
| CN210140818U (en) * | 2019-03-26 | 2020-03-13 | 中国石油大学(北京) | Skirt type self-abandoning puncture-resistant self-elevating drilling platform pile shoe and drilling platform |
-
2019
- 2019-03-26 CN CN201910231604.XA patent/CN110004902B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9208257D0 (en) * | 1991-11-28 | 1992-05-27 | Pilecon Engineering Berhad | Installing pre-founded columns |
| US5425429A (en) * | 1994-06-16 | 1995-06-20 | Thompson; Michael C. | Method and apparatus for forming lateral boreholes |
| JP2004285698A (en) * | 2003-03-24 | 2004-10-14 | M Ee T Kouzou Sekkei:Kk | Deformed precast pile |
| CN102226344A (en) * | 2011-04-02 | 2011-10-26 | 中国石油大学(北京) | Pile shoe structure for retractable drilling platforms |
| 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 |
| CN203049602U (en) * | 2012-11-23 | 2013-07-10 | 浙江大学 | Offshore platform pile leg capable of realizing convenient pile unplugging and installing platform provided with pile leg |
| KR101363487B1 (en) * | 2013-04-22 | 2014-02-14 | 무성토건 주식회사 | High performance composite nail |
| JP2015037925A (en) * | 2013-07-18 | 2015-02-26 | 半蔵 門脇 | Self-elevating working barge |
| WO2015135471A1 (en) * | 2014-03-14 | 2015-09-17 | 香港强光海洋工程有限公司 | Hollow cylindrical pier for fixing offshore platform structure to bed and method of installing and constructing same |
| CN104947671A (en) * | 2014-03-25 | 2015-09-30 | 上海外高桥造船有限公司 | Wharf pile pulling analytical method for self-elevating drilling platform |
| WO2016127477A1 (en) * | 2015-02-09 | 2016-08-18 | 清华大学深圳研究生院 | Floating type self-elevating drilling platform |
| CN106284332A (en) * | 2015-05-30 | 2017-01-04 | 江苏扬泰中天管桩有限公司 | Tenon joint type concrete uplift pile |
| WO2018072582A1 (en) * | 2016-10-20 | 2018-04-26 | 南通振华重型装备制造有限公司 | Pile leg utilized in ju2000e self-elevating drilling platform, and method of installing pile shoe |
| 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 |
| CN109209301A (en) * | 2018-11-12 | 2019-01-15 | 中国海洋石油集团有限公司 | A kind of extended horizontal well floating screen assembly |
| CN210140818U (en) * | 2019-03-26 | 2020-03-13 | 中国石油大学(北京) | Skirt type self-abandoning puncture-resistant self-elevating drilling platform pile shoe and drilling platform |
Non-Patent Citations (1)
| Title |
|---|
| 双层土中自升式钻井平台桩靴极限拔桩阻力计算新方法;王懿;臧孟;宋林松;段梦兰;罗晓兰;;中国海上油气(第05期);全文 * |
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