CN109868815A - A kind of shoe can seabed self discarding self-elevating drilling platform shoe and drilling platforms - Google Patents
A kind of shoe can seabed self discarding self-elevating drilling platform shoe and drilling platforms Download PDFInfo
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- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
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- 239000004576 sand Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
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Abstract
It can seabed self discarding self-elevating drilling platform shoe and drilling platforms the invention discloses a kind of shoe, the shoe can seabed self discarding self-elevating drilling platform shoe include shoe ontology (1) and stake shoes (2), shoe ontology (1) and stake shoes (2) are setting up and down, and shoe ontology (1) can be moved up and be separated with stake shoes (2).The shoe can seabed self discarding self-elevating drilling platform shoe can make that soil bearing capacity suffered by platform is bigger at the identical well location and spud leg driving depth is more shallow, when spud leg driving depth leads to pile pulling operation difficulty more deeply, stake shoes can be freed by the effect of traction rope to achieve the purpose that reduce spud leg self weight, so that the resistance that pile pulling operation is subject to is smaller, pile pulling operation is more smooth.
Description
Technical field
The present invention relates to marine oil gas field development equipment fields, and particularly a kind of shoe can seabed self discarding jack up brill
Well platform pile shoe or a kind of drilling platforms.
Background technique
As country proposes the instruction of increasing Oil And Gas Exploration And Development dynamics, major oil play, which gradually increases, to be directed to
China land, offshore oil and gas block exploration and development to ensure national energy security.And the oil-gas exploration of ocean shallow water area
The operation support for be unableing to do without ocean self-elevating drilling platform is developed, the pitching pile of self-elevating drilling platform and pile pulling operation are them in sea
Two in upper operation process extremely the key links.The safety of platform and the bearing capacity of the lower part soil body have when pitching pile operation
Close connection, and the soil body have to the bearing capacity of upper brace and the size of soil mass property and platform pile shoe it is direct
System, biggish shoe size can guarantee biggish forced area, so that the soil body, which can provide stronger bearing capacity, guarantees platform
Operation safety, while the driving depth of spud leg is relatively smaller；The operation complexity of platform and the lower part soil body when pile pulling operation
Parameter, spud leg self weight, spud leg driving depth have close connection, and lesser spud leg self weight can with lesser spud leg driving depth
Guarantee relatively smaller pile extraction resistance, so that platform is easier to carry out pile pulling operation.However, in actual operation process, platform
Pitching pile safety and pile pulling be smoothly two targets for being difficult to realize simultaneously.Due to soil property, spud leg needs in most cases
Entering the deeper depth of mud just can guarantee stronger bearing capacity, and biggish pile extraction resistance caused by deeper driving depth is led
Cause pile pulling difficult.
Chinese patent CN 206986884U publication date on 2 9th, 2018, is disclosed " a kind of to be suitable for truss-like stake
The detachable shoe of leg ", the ring block being bolted increases the maximum cross-section area of original shoe to increase shoe
Bearing capacity, and by increase pile top height enhance shoe quickly enter mud effect, but the ring block of the detachable shoe and this
Bolt between body bears shearing strength, and overall stability is relatively poor.
Summary of the invention
In order to solve the problems, such as that existing detachable shoe stability is poor, the present invention provides a kind of shoe can seabed give up as hopeless
The shoe of formula self-elevating drilling platform and drilling platforms, the shoe can seabed self discarding self-elevating drilling platform shoe can make
Soil bearing capacity suffered by platform is bigger at identical well location and spud leg driving depth is more shallow, when spud leg driving depth is deeper or other originals
Because that when leading to pile pulling operation difficulty, can be freed to stake shoes by the effect of traction rope to reach the mesh for reducing spud leg self weight
, so that the resistance that pile pulling operation is subject to is smaller, pile pulling operation is more smooth.
The technical solution adopted by the present invention to solve the technical problems is: a kind of shoe can seabed self discarding jack-up rigs
Platform pile shoe, including shoe ontology and stake shoes, the center line of shoe ontology and the center line of stake shoes are upright state, shoe sheet
Body and stake shoes are setting up and down, and shoe ontology can be moved up and be separated with stake shoes；Shoe ontology is block structure, shoe ontology
Vertical section be octagon, shoe ontology contains sequentially connected top surface, ramp, outer peripheral surface, lower inclined plane and bottom from the top down
Face；The lower surface of stake shoes is top taper type structure directed downwardly, grafting groove is equipped in the upper end of stake shoes, along the diameter side of stake shoes
To the inside and outside inner core section and outer ring segment being arranged is contained in the vertical section of stake shoes, and the medial surface of outer ring segment upper end is the grafting groove
Inner peripheral surface；The lower part of shoe ontology is matched to be plugged in the grafting groove.
Top surface is parallel with bottom surface, and the lower surfaces of stake shoes is the lower inclined plane of shoe ontology and the amplification of bottom surface, shoe ontology
Center line is vertical with top surface, and the upper end diameter of outer peripheral surface and the lower end diameter of outer peripheral surface are identical, and the vertical section of inner core section is eight sides
Shape, the vertical section of outer ring segment are trapezoidal.
Shoe ontology is detachably connected with stake shoes by multiple pins, and multiple pins are arranged along the circumferential uniform intervals of stake shoes
Column, the outer peripheral surface of shoe ontology is interior to be equipped with pin spliced eye, is equipped with pin installation through-hole in the upper end of outer ring segment.
When the depth that prediction spud leg enters mud is smaller, and when pile pulling operation does not need to free shoes；
The number calculation formula of pin are as follows:
When the depth that prediction spud leg enters mud is deeper, and needs to free shoes when pile pulling operation；
The number calculation formula of pin are as follows:
L be pin quantity, unit be it is a, round up and retain integer；
W is the gravity of stake shoes, unit N；
F is soil body adsorption capacity suffered by stake shoes, unit N；
FsFor soil body shearing force suffered by stake shoes, unit N；
FrFor soil body frictional force suffered by stake shoes, unit N；
N is the shearing strength of pin, unit N/m2；
D is the diameter of pin, unit m；
N is safety coefficient, no unit, and value is more than or equal to 1.5.
The calculation formula of the axial length of the lateral surface of inner core section are as follows:
h3For the axial length of the lateral surface of inner core section, unit m；
FwFor the maximum gravity that shoe during drilling platforms maximum precompressed carrying capacity or subsequent job is born, unit N；
S is the shearing strength of stake shoes, unit N/m2；
M safety coefficient, no unit, value are more than or equal to 1.5.
The shoe can seabed self discarding self-elevating drilling platform shoe further include more traction ropes, the quantity and pin of traction
The quantity of nail is identical, and the lower end of traction rope and the outer end of pin connect one to one fixation.
The shoe can seabed self discarding self-elevating drilling platform shoe further include straight tube and Duo Gen inclined tube, the quantity of inclined tube
Identical as the quantity of pin, the upper end of inclined tube and the lower end of straight tube are correspondingly connected with, and the lower end of inclined tube and the outer end one of pin are a pair of
It answers, traction rope is sheathed in straight tube and inclined tube.
The lower end of inclined tube is located at the top of pin outer end, and the lower end of inclined tube is externally provided with end fixed pulley, traction rope and end
Fixed pulley connection, along the diametrical direction of shoe ontology, the distance of end fixed pulley to pin outer end is greater than the length of pin.
The shoe can seabed self discarding self-elevating drilling platform shoe further include upright truss, straight tube is sheathed on truss
It is interior, fixed pulley in multiple pipes is equipped in inclined tube, the upper end of truss is equipped with top fixed pulley, fixed pulley and top in traction rope and pipe
Fixed pulley connection, inclined tube are connected and fixed by support rod and shoe ontology, and straight tube is connected and fixed by support rod and truss.
A kind of drilling platforms, the bottom of the drilling platforms be equipped with above-mentioned shoe can seabed self discarding jack-up rigs it is flat
Platform shoe.
The beneficial effects of the present invention are: can make that soil bearing capacity suffered by platform is bigger at the identical well location and spud leg enters
Mud depth is more shallow, when spud leg driving depth leads to pile pulling operation difficulty more deeply, by the effect of traction rope can to stake shoes into
Row is freed to achieve the purpose that reduce spud leg self weight, so that the resistance that pile pulling operation is subject to is smaller, pile pulling operation is more smooth.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.
Fig. 1 be shoe of the present invention can seabed self discarding self-elevating drilling platform shoe schematic diagram.
Fig. 2 is the diameter Relationship schematic diagram of shoe ontology Yu stake shoes.
Fig. 3 is the vertical section schematic diagram of shoe ontology.
Fig. 4 is the vertical section schematic diagram of a shoes.
Fig. 5 is the cooperation schematic diagram of shoe ontology Yu stake shoes.
Fig. 6 is the schematic diagram of inclined tube lower end.
1, shoe ontology；2, stake shoes；3, pin；4, give up as hopeless module；5, truss；
11, top surface；12, ramp；13, outer peripheral surface；14, lower inclined plane；15, bottom surface；
21, inner core section；22, outer ring segment；23, medial surface；24, grafting groove；25, lower surface；26, lateral surface；
41, inclined tube；42, fixed pulley in managing；43, traction rope；44, support rod；45, straight tube；46, top fixed pulley；47, it holds
Portion's fixed pulley.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
A kind of shoe can seabed self discarding self-elevating drilling platform shoe, including shoe ontology 1 and stake shoes 2, shoe ontology 1
Center line and the center lines of stake shoes 2 be upright state, shoe ontology 1 and the setting stacked on top of one another of stake shoes 2,1 energy of shoe ontology
It enough moves up and is separated with stake shoes 2；Shoe ontology 1 is block structure, and the vertical section of shoe ontology 1 is octagon, shoe sheet
Body 1 contains sequentially connected top surface 11, ramp 12, outer peripheral surface 13, lower inclined plane 14 and bottom surface 15 from the top down；Stake shoes 2 are flat
Flat shape structure, the lower surface 25 of stake shoes 2 are top taper type structure directed downwardly, are equipped with grafting groove 24, edge in the upper end of stake shoes 2
The inside and outside inner core section 21 and outer ring segment 22 being arranged is contained in the diametrical direction of stake shoes 2, the vertical section of stake shoes 2, outer 22 upper end of ring segment
Medial surface 23 is the inner peripheral surface of the grafting groove 24；The lower part of shoe ontology 1 is matched to be plugged in (i.e. stake in the grafting groove 24
1 insertion portion surface of boots ontology is bonded completely with the inner surface of grafting groove 24), as shown in Figures 1 to 5.
In the present embodiment, the center line of shoe ontology 1 is overlapped with the center line of stake shoes 2, the vertical section eight of shoe ontology 1
Side shape, the top view of shoe ontology 1 are circle or rectangular, and shoe ontology 1 is metal blocks, and shoe ontology 1 is at outer peripheral surface 13
Diameter it is maximum.Stake shoes 2 are that top view is circular ring shape or side's annular, and stake shoes 2 are pancake block structure.Stake shoes 2 can be sky
Core structure or solid construction, when stake shoes 2 are hollow structure, stake shoes 2, which can choose, to be formed from steel；When stake shoes 2 are solid construction
When, stake shoes 2 can choose to be formed by concreting.
In the present embodiment, top surface 11 is parallel to each other with bottom surface 15, and bottom surface 15 is parallel to horizontal plane, in shoe ontology 1
Heart line is vertical with top surface 11, and the upper end diameter of outer peripheral surface 13 is identical as the lower end diameter of outer peripheral surface 13, the diameter of outer peripheral surface 13 with
The identical diameter of the medial surface 23 (i.e. the inner peripheral surface of grafting groove 24) of outer ring segment 22 is d1, the lateral surface 26 of outer ring segment 22
Diameter is d2, and diameter of the stake shoes 2 at outer side 26 is maximum, and d2 is greater than d1.The vertical section of inner core section 21 is octagon, outer ring segment
22 vertical section is that trapezoidal ramp 12 and the upper surface of outer ring segment 22 are located in the same conical surface.
In the present embodiment, the lower surface 25 of stake shoes 2 be shoe ontology 1 lower inclined plane 14 and bottom surface 15 amplification, in this way
The pile top height of shoe on the whole increases to present h2 by original h1, so that platform pile shoe more easy entry mud, tripping in
Cheng Gengjia is smoothly quick, as shown in Figure 1.
In the present embodiment, shoe ontology 1 is detachably connected with stake shoes 2 by multiple pins 3, and multiple pins 3 are along stake shoes 2
The arrangement of circumferential uniform intervals, be equipped with pin spliced eye in the outer peripheral surface 13 of shoe ontology 1, the upper end of outer ring segment 22 is equipped with pin
The position of installation through-hole, the pin spliced eye and pin installation through-hole corresponds.Pin 3 passes through the pin installation through-hole, pin
The inner end of nail 3 is located in the pin spliced eye of shoe ontology 1, and the outer end of pin 3 is located at outside stake shoes 2.Pin 3 and shoe ontology 1
On pin spliced eye transition fit, the pin installation through-hole clearance fit in pin 3 and outer ring segment 22.
In the present embodiment, the quantity of pin 3 is calculated with following calculation formula:
(it can be understood as the current driving depth of platform, in the complete pile pulling of later period operation when the depth that prediction spud leg enters mud is smaller
When withdrawing, platform can be not in the phenomenon of platform pile pulling difficulty along that must carry out pile pulling operation), and pile pulling operation is not required to
When freeing shoes 2；
The number calculation formula of pin 3 are as follows:
When prediction spud leg enters the depth of mud compared with (it is larger can be understood as current platform driving depth deeply, causes platform rear
When continuous pile pulling, since platform pile pulling ability is limited, platform can not be successfully pile pulling and withdraw, the pile pulling ability of platform and the drinking water of platform
Ability and seafloor soil property, platform parameters, that stake ability, platform own wt etc. are rushed in shoe is related), and need to solve when pile pulling operation
When de- stake shoes 2；
The number calculation formula of pin 3 are as follows:
L be pin 3 quantity, unit be it is a, round up and retain integer；
W is the gravity of stake shoes 2, unit N；
F is soil body adsorption capacity suffered by stake shoes 2, unit N；
FsFor soil body shearing force suffered by stake shoes 2, unit N；
FrFor soil body frictional force suffered by stake shoes 2, unit N；
N is the shearing strength of pin 3, unit N/m2；
D is the diameter of pin 3, unit m；
N is safety coefficient, no unit, and value is more than or equal to 1.5.
Wherein, F, FsAnd FrSpecific calculating calculation method be referred to API specification and existing calculation method, such as specially
The pile extraction resistance write in " self-elevating drilling platform pitching pile Operation control technology --- Jiang Wei, Wang Shunwen, Yang Jin, Liu Shujie " calculates
Partial content, periodical " numerical computation method --- Duan Menglan, Zhang Aixia, Wang Jian of self-elevating drilling platform pile extraction resistance prediction
Army, Song Linsong " in pile extraction resistance calculate.
The pin 3 of multiple uniform intervals arrangements is inserted into the pin hole reserved on shoe ontology 1 and stake shoes 2, to shoe sheet
Body 1 and stake shoes 2 play the role of longitudinal spacing: during platform leg tripping in, multiple pins are mainly used for bearing stake shoes 2
Gravity；When platform withdraws pile pulling and do not need to free shoes 2, multiple pins 3 are primarily subjected to suffered by the gravity of a shoes 2, stake shoes
The effect of the power such as soil body shearing force suffered by soil body adsorption capacity, stake shoes, soil body frictional force suffered by stake shoes；Since stake shoes 2 are circumscribed
In the outside of shoe ontology 1, therefore to playing the role of limit in 1 horizontal direction of shoe ontology.
The calculation formula of the axial length of the lateral surface of inner core section 21 are as follows:
Axial length of the h3 for the lateral surface of inner core section 21, unit m, as shown in Figure 5；
FwFor the maximum gravity that shoe during drilling platforms maximum precompressed carrying capacity or subsequent job is born, unit N；
S is the shearing strength of stake shoes 2, unit N/m2；
M safety coefficient, no unit, value are more than or equal to 1.5.
Wherein, the maximum gravity that shoe is born during the maximum precompressed carrying capacity of drilling platforms or subsequent job is fixed
(not including that the Late reformation of platform influences), can inquire according to behaviour's ship handbook of each platform.The shearing strength of stake shoes 2 is by it
Material itself determines, referring to the intensity of its material.
In the present embodiment, the shoe can seabed self discarding self-elevating drilling platform shoe further include more traction ropes
43, the quantity of traction rope 43 is identical as the quantity of pin 3, and the lower end of traction rope 43 and the outer end of pin 3 connect one to one admittedly
It is fixed.By the traction action of traction rope 43, multiple pins 3 for fixing shoe ontology 1 and stake shoes 2 can be pulled out.
Specifically, the lower end of inclined tube 41 is located at the top of 3 outer end of pin, (lower end of inclined tube 41 can be slightly above pin 3
Outer end), the lower end of inclined tube 41 is externally provided with end fixed pulley 47, and traction rope 43 is connect with end fixed pulley 47, along shoe ontology 1
Diametrical direction, the distance of end fixed pulley 47 to 3 outer end of pin are greater than the length of pin 3.In this way drawing traction rope 43 when, can be with
Multiple pins 3 in shoe ontology 1 and stake shoes 2 are pulled out, the separation between shoe ontology 1 and stake shoes 2, such as Fig. 6 are further realized
It is shown.In addition, end fixed pulley 47 to stake shoes 2 center line distance be more preferably less than stake shoes 2 lateral surface 26 radius, to subtract
The small shoe can seabed self discarding self-elevating drilling platform shoe during tripping in, inclined tube 41, end fixed pulley 47 and traction
The resistance of seawater and seafloor soil that rope 43 is subject to.
In the present embodiment, the shoe can seabed self discarding self-elevating drilling platform shoe further include straight tube 45 and Duo Gen
The quantity of inclined tube 41, inclined tube 41 is identical as the quantity of pin 3, and inclined tube 41 is tilted along the ramp 12 of shoe ontology 1, inclined tube 41
Upper end and the lower end of straight tube 45 are correspondingly connected with, and straight tube 45 is upright state, and the lower end of inclined tube 41 and the outer end one of pin 3 are a pair of
It answers, traction rope 43 is sheathed in straight tube 45 and inclined tube 41, i.e. every traction rope 43 containing being located in inclined tube 41 one section, also contains
One section in straight tube 45.
In the present embodiment, the shoe can seabed self discarding self-elevating drilling platform shoe further include upright truss 5,
Straight tube 45 is sheathed in truss 5, and fixed pulley 42 in multiple spaced pipes is equipped between the both ends and both ends inside inclined tube 41,
The upper end of truss 5 is equipped with top fixed pulley 46, and traction rope 43 is connect with fixed pulley 42 in pipe and top fixed pulley 46, and inclined tube 41 is logical
It crosses support rod 44 to be connected and fixed with shoe ontology 1, straight tube 45 is connected and fixed by support rod 44 with truss 5.
In the present invention, the interior fixed pulley 42 of inclined tube 41, pipe, traction rope 43, support rod 44, straight tube 45 and top fixed pulley 46
Module 4 of giving up as hopeless can be referred to as, that is, module of giving up as hopeless 4 contains fixed pulley 42, traction rope 43, support rod 44, straight tube in inclined tube 41, pipe
45 and top fixed pulley 46.Truss 5 is located at the upper end of shoe ontology 1 and is fixedly connected with end face thereon, 45 lateral wall of straight tube with
It is welded and fixed between truss 5 by multiple support rods 44 and position-limiting action is played to straight tube 45.
In the present embodiment, 42 uniform intervals of fixed pulley are symmetrically fixedly arranged in 41 inner wall of inclined tube and straight tube 45 most in managing
At upper port, top fixed pulley 46 is fixed on the top of truss 5, and straight tube 45 is located at 5 center of truss；It is located at for one section in traction rope 43
41 inside of inclined tube changes the direction of power with the interior cooperation of fixed pulley 42 is managed, and bottom is fixedly connected with the end of each pin 3, counts
Amount is consistent with 3 quantity of pin, and top is pooled together to be connected with another section of traction rope, this section of traction rope is located at straight tube 45
It is interior, and cooperate with the top fixed pulley 46 of 45 top export of straight tube and truss upper end.
By pulling traction rope 43 on platform, pull-out is located at multiple pins 3 in 2 pin hole of shoe ontology 1 and stake shoes,
So that freeing between stake shoes 2 and shoe ontology 1, when above mentioning spud leg, shoe ontology 1 is separated with stake shoes 2, and stake shoes 2 are temporarily lost
It stays in the shoe footprint in seabed, so that the pile extraction resistance for reducing platform is more easier pile pulling operation.The quantity of inclined tube 41
It is consistent with 3 quantity of pin, and inclined tube 41 is arranged along the side uniform intervals of shoe ontology, and is consolidated by multiple support rods 44
It is fixed.
Be described below a kind of drilling platforms, the bottom of the drilling platforms be equipped with above-mentioned shoe can seabed self discarding from rising
Formula drilling platforms shoe.
Be described below the shoe can seabed self discarding self-elevating drilling platform shoe the course of work, comprising the following steps:
The seat of shoe ontology 1 is put in a shoes 2, and is directed at the pin hole of shoe ontology 1 and stake shoes 2 by step 1；
Multiple pins 3 are inserted into the pin hole of shoe ontology 1 and stake shoes 2 by step 2；
The outer end of step 3, the lower end that multistage is located to the traction rope 43 inside inclined tube 41 and each pin 3 is solid one by one respectively
Fixed connection；
Step 4, decentralization spud leg carry out ballast operation, according to the pile pulling ability of platform and driving depth, the seabed of spud leg
Whether the comprehensive analysis platform such as soil parameter needs to free stake shoes 2 when withdrawing operation；
If step 5, when thinking that pile extraction resistance is larger and may cause pile pulling difficulty, by pulling traction rope on platform
43, the multiple pins 3 being located in 2 pin hole of shoe ontology 1 and stake shoes are pulled out, so that freed between stake shoes 2 and shoe ontology 1,
When above mentioning spud leg, shoe ontology 1 is separated with stake shoes 2, and stake shoes 2 are temporarily left in the shoe footprint in seabed, to reduce
The resistance of pile pulling is more easier pile pulling operation.
By using shoe of the present invention can seabed self discarding self-elevating drilling platform shoe and drilling platforms, can make
Soil bearing capacity suffered by platform is bigger at the identical well location and spud leg driving depth is more shallow, when spud leg driving depth causes more deeply
When pile pulling operation difficulty, stake shoes can be freed by the effect of traction rope to achieve the purpose that reduce spud leg self weight, be made
The resistance that is subject to of pile pulling operation is smaller, pile pulling operation is more smooth；Shoe after transformation due to its pile top height compared to
The height of former shoe is higher, therefore shoe is stronger in the setting ability of hard stratum, and saving to a certain extent is from drilling well is risen flat
In the pitching pile ballast operation period of platform, reduce operating cost.
The above, only specific embodiments of the present invention cannot limit the range that invention is implemented with it, so it is equivalent
The displacement of component, or according to equivalent variations made by the invention patent protection scope and modification, should all still fall within what this patent was covered
Scope.In addition, between technical characteristic and technical characteristic in the present invention, technical characteristic and technical solution, technical solution and technology
Use can be freely combined between scheme.
Claims (10)
1. a kind of shoe can seabed self discarding self-elevating drilling platform shoe, which is characterized in that the shoe can seabed self discarding
Self-elevating drilling platform shoe includes shoe ontology (1) and stake shoes (2), the center line of shoe ontology (1) and the center of stake shoes (2)
Line is upright state, and shoe ontology (1) and stake shoes (2) are setting up and down, shoe ontology (1) can move up and with stake shoes
(2) it separates；
Shoe ontology (1) is block structure, and the vertical section of shoe ontology (1) is octagon, and shoe ontology (1) is containing from the top down
Sequentially connected top surface (11), ramp (12), outer peripheral surface (13), lower inclined plane (14) and bottom surface (15)；
The lower surface (25) of stake shoes (2) is top taper type structure directed downwardly, is equipped with grafting groove in the upper end of stake shoes (2)
(24), along the diametrical direction of stake shoes (2), the inside and outside inner core section (21) and outer ring segment (22) being arranged is contained in the vertical section of stake shoes (2),
The medial surface (23) of outer ring segment (22) upper end is the inner peripheral surface of the grafting groove (24)；The lower part of shoe ontology (1) is matched to insert
It is connected in the grafting groove (24).
2. shoe according to claim 1 can seabed self discarding self-elevating drilling platform shoe, which is characterized in that top surface
(11) parallel with bottom surface (15), the lower surface (25) of stake shoes (2) is the lower inclined plane (14) of shoe ontology (1) and putting for bottom surface (15)
Greatly, the center line of shoe ontology (1) is vertical with top surface (11), and the upper end diameter of outer peripheral surface (13) and the lower end of outer peripheral surface (13) are straight
Diameter is identical, and the vertical section of inner core section (21) is octagon, and the vertical section of outer ring segment (22) is trapezoidal.
3. shoe according to claim 1 can seabed self discarding self-elevating drilling platform shoe, which is characterized in that shoe sheet
Body (1) is detachably connected with stake shoes (2) by multiple pins (3), and multiple pins (3) are arranged along the circumferential uniform intervals of stake shoes (2)
Column, the outer peripheral surface (13) of shoe ontology (1) is interior to be equipped with pin spliced eye, and it is logical that pin installation is equipped in the upper end of outer ring segment (22)
Hole.
4. shoe according to claim 3 can seabed self discarding self-elevating drilling platform shoe, which is characterized in that work as prediction
The depth that spud leg enters mud is smaller, and when pile pulling operation does not need to free a shoes (2)；
The number calculation formula of pin (3) are as follows:
When the depth that prediction spud leg enters mud is deeper, and needs to free a shoes (2) when pile pulling operation；
The number calculation formula of pin (3) are as follows:
L be pin (3) quantity, unit be it is a, round up and retain integer；
W is the gravity of stake shoes (2), unit N；
F is soil body adsorption capacity suffered by stake shoes (2), unit N；
FsFor soil body shearing force suffered by stake shoes (2), unit N；
FrFor soil body frictional force suffered by stake shoes (2), unit N；
N is the shearing strength of pin (3), unit N/m2；
D is the diameter of pin (3), unit m；
N is safety coefficient, no unit, and value is more than or equal to 1.5.
5. shoe according to claim 1 can seabed self discarding self-elevating drilling platform shoe, which is characterized in that inner core section
(21) calculation formula of the axial length of lateral surface are as follows:
h3For the axial length of the lateral surface of inner core section (21), unit m；
FwFor the maximum gravity that shoe during drilling platforms maximum precompressed carrying capacity or subsequent job is born, unit N；
S is the shearing strength of stake shoes (2), unit N/m2；
M safety coefficient, no unit, value are more than or equal to 1.5.
6. shoe according to claim 3 can seabed self discarding self-elevating drilling platform shoe, which is characterized in that the shoes
Formula can seabed self discarding self-elevating drilling platform shoe further include more traction ropes (43), the quantity and pin of traction rope (43)
(3) quantity is identical, and the lower end of traction rope (43) and the outer end of pin (3) connect one to one fixation.
7. shoe according to claim 6 can seabed self discarding self-elevating drilling platform shoe, which is characterized in that the shoes
Formula can seabed self discarding self-elevating drilling platform shoe further include straight tube (45) He Duogen inclined tube (41), the quantity of inclined tube (41) with
The quantity of pin (3) is identical, and the upper end of inclined tube (41) and the lower end of straight tube (45) are correspondingly connected with, the lower end of inclined tube (41) and pin
(3) outer end corresponds, and traction rope (43) is sheathed in straight tube (45) and inclined tube (41).
8. shoe according to claim 7 can seabed self discarding self-elevating drilling platform shoe, which is characterized in that inclined tube
(41) lower end is located at the top of pin (3) outer end, and the lower end of inclined tube (41) is externally provided with end fixed pulley (47), traction rope (43)
Connect with end fixed pulley (47), the diametrical direction along shoe ontology (1), end fixed pulley (47) to pin (3) outer end away from
From the length for being greater than pin (3).
9. shoe according to claim 7 can seabed self discarding self-elevating drilling platform shoe, which is characterized in that the shoes
Formula can seabed self discarding self-elevating drilling platform shoe further include upright truss (5), straight tube (45) is sheathed in truss (5),
Fixed pulley (42) in multiple pipes is equipped in inclined tube (41), the upper end of truss (5) is equipped with top fixed pulley (46), traction rope (43) with
Fixed pulley (42) and top fixed pulley (46) connection, inclined tube (41) are connect by support rod (44) with shoe ontology (1) solid in managing
Fixed, straight tube (45) is connected and fixed by support rod (44) with truss (5).
10. a kind of drilling platforms, which is characterized in that the bottom of the drilling platforms is equipped with shoe described in claim 1 can sea
Bottom self discarding self-elevating drilling platform shoe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910231609.2A CN109868815B (en) | 2019-03-26 | 2019-03-26 | Shoe type submarine self-disposable self-elevating drilling platform pile shoe and drilling platform |
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|---|---|---|---|
| CN201910231609.2A CN109868815B (en) | 2019-03-26 | 2019-03-26 | Shoe type submarine self-disposable self-elevating drilling platform pile shoe and drilling platform |
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| CN109868815A true CN109868815A (en) | 2019-06-11 |
| CN109868815B CN109868815B (en) | 2024-02-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111812208A (en) * | 2020-06-30 | 2020-10-23 | 中海油田服务股份有限公司 | Pile-inserting ballast monitoring device for marine self-elevating platform |
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| CN109868815B (en) | 2024-02-02 |
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