CN101850829A - Mounting process of offshore oil single-leg jacket-type platform - Google Patents
Mounting process of offshore oil single-leg jacket-type platform Download PDFInfo
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- CN101850829A CN101850829A CN200910081366A CN200910081366A CN101850829A CN 101850829 A CN101850829 A CN 101850829A CN 200910081366 A CN200910081366 A CN 200910081366A CN 200910081366 A CN200910081366 A CN 200910081366A CN 101850829 A CN101850829 A CN 101850829A
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Abstract
The invention provides a mounting process of an offshore oil single-leg jacket-type platform, which comprises the following steps of: arranging a main operation ship in place; arranging a barge in place; constructing a lower part structure of the jacket-type platform; mounting an upper part structure; mounting a barge platform; mounting a submarine anode; mounting a conductor tube clip; and cleaning and checking the platform. The mounting of the upper part structure comprises the following steps of: mounting the platform, a walkway and railings, sandblasting and repairing paint. The mounting process of the offshore oil single-leg jacket-type platform is improved in that the construction of the lower part structure sequentially comprises the following steps of: constructing a main pile; mounting a guide sleeve; mounting a crown plate; constructing inclined piles; and mounting a gap plate. The invention has the advantages of scientific and reasonable process line design, can improve working efficiency, lower mounting danger, save steel for building the platform, reduce loading, mounting and transportation cost, enhance use safety and reliability of the platform, and comprehensively and effectively decrease exploration cost of a marginal oil field. And therefore, the invention provide necessary guarantee for a healthy, safe, environment-friendly construction environment and accords with the strategic requirement for sustainable development.
Description
Technical field
The present invention relates to the offshore oil platform installation method, relate in particular to a kind of mounting process of offshore oil single-leg jacket-type platform.
Background technology
The modal form of shallow water offshore oil platform is a jacket platform.Existing shallow water jacket comprises versions such as 4 legs, 6 legs or 8 legs.Jacket platform generally adopts the mode of land monolithic construction, offshore integral lifting to build.The shortcoming of existing jacket platform is that the steel consumption amount is bigger; Need large-scale floating crane boats and ships and transportation pontoon during marine the installation, cost is higher.
According to the needs of offshore oil engineering development, simultaneously in order to save the Oilfield developing cost, the practitioner of the industry continually develops the shallow water jacket-type oil platform of versions such as having designed 3 legs and only leg again in recent years.
As shown in Figure 1, the structure of existing offshore oil single-leg jacket-type platform comprises bottom section, topside 1, leans on the ship platform; This topside is installed and is comprised platform, aisle and railing (not shown), bottom section comprises insertion king pile 2 and taper pile 3 under water, be set on the king pile 2 and taper pile 3 on pilot sleeve 4, topside 1 is positioned at waterborne and connects by spud leg 11 and is located on the king pile 2, pilot sleeve 4 is by a master collet 41, two auxiliary sockets 42 and three triangle support bodys that support tube 43 constitutes, be connected and fixed by a support tube 43 respectively between master collet 41 and two auxiliary sockets 42, be connected and fixed by a support tube 43 between two auxiliary sockets 42, master collet 41 is a vertical configuration, three support tubes 43 are horizontal, two auxiliary sockets 42 are skewed, and the angle of inclination between auxiliary socket 42 and the horizontal support tube 43 is 15 degree ± 5 degree; Master collet 41 is set on the king pile 2, and this king pile 2 and pilot sleeve 4 are fixing by 7 welding of imperial crown plate, and auxiliary socket 42 is set on the taper pile 3, and this taper pile 3 and pilot sleeve 4 are fixing by the gap plate welding.
The design of offshore oil single-leg jacket-type platform (Monopod), build and install, consuming steel only is about 600 tons, be about 40% of common conduit shelf-type platform consumption steel, the crane barge ship lift heavy ability of installing and using is 350 tons, it is 5000 tonnes that the barge load carrying ability is used in transportation, the installation and the transportation of common conduit shelf-type platform relatively, requirement to crane barge boats and ships and transportation pontoon all reduces greatly, not only can save the steel use amount, the more important thing is and reduced the operating needs of marine installation phase, can reduce the equipment cost of marginal oil field transportation pontoon and large-scale floating crane ship.But, at present only leg jacket-type platform installation work at sea,, therefore need the rational mounting process of design science because environment is abominable, situation is complicated, causes installation risk huge.
Summary of the invention
Main purpose of the present invention is to overcome the above-mentioned shortcoming that existing product exists, and provide a kind of mounting process of offshore oil single-leg jacket-type platform, its operational path design science is reasonable, can increase work efficiency, reduce installation risk, save the platform construction steel, reduce shipment, installation and traffic cost, and can strengthen safety and reliability that platform uses, effectively reduce the marginal oil field cost comprehensively, for healthy and safe and environmental protection (HSE) construction environment provide necessary guarantee, meet strategy of sustainable development requirement simultaneously.
The objective of the invention is to realize by following technical scheme.
The mounting process of offshore oil single-leg jacket-type platform of the present invention, comprise that main workboat is in place, barge is in place, jacket platform bottom section construction operation, topside are installed, by the ship platform install, anode is installed under water, the drill conductor clamp is installed and platform cleans and checks and accepts; This topside is installed installation, sandblast and the touch-up paint that comprises platform, aisle and railing; It is characterized in that this bottom section construction operation comprises step in regular turn: king pile construction operation step, pilot sleeve installation steps, imperial crown plate installation steps, taper pile construction operation step and gap plate installation steps.
The mounting process of aforesaid offshore oil single-leg jacket-type platform, wherein king pile construction operation step comprises accurate adjustment and the piling and the pile extension of the coarse adjustment of king pile squareness and pitching pile, king pile squareness; The accurate adjustment of the coarse adjustment of this king pile squareness and pitching pile, king pile squareness and piling are to finish by the winch, folder pile framing (Caisson installation aids) and the hydraulicefficiency windlass operation that are installed on the main workboat; When the coarse adjustment of this king pile squareness and pitching pile, elder generation mark geographical north and platform position northwards on king pile, hold king pile by the winch wirerope then, make king pile by stand up on the barge sling after, the wirerope gib head of loweing earlier enters in the seawater length of 10 ± 0.5 meters of king pile bottoms, close bearing pin after then king pile being moved into folder pile framing inside by the folder pile framing outside, transfer the wirerope gib head then, make the king pile by gravity freely go into 10 ± 0.5 meters in mud, go in the mud process and measure the king pile squareness at any time with the electronics miter square; When the accurate adjustment of this king pile squareness and piling, set drive hammer energy and striking frequency, and measure the king pile squareness at any time, carry out the leveling operation at any time, the error that makes the king pile squareness is less than 0.1 degree; This pile extension step is that king pile is docked with topside, and king pile and topside butt weld are the formula that staggers, and the angle that staggers is that 40 degree are to 90 degree.
The mounting process of aforesaid offshore oil single-leg jacket-type platform, wherein press from both sides two flanks that pile framing comprises steel, correspondence one end of two flanks connects by the bearing pin that can open and close freely, and two corresponding other ends of flank are weldingly fixed on the workboat deck.
The mounting process of aforesaid offshore oil single-leg jacket-type platform, wherein the coarse steps of king pile squareness is to carry out coarse adjustment when king pile squareness off-design standard, departs from scope for more than spending greater than king pile squareness 2; The coarse adjustment mode is when king pile during to the stem lopsidedness, strain main workboat ship aft anchor cable, make the stressed tension of this ship aft anchor cable, simultaneously the stem anchor hawser is slightly loosened, make boats and ships microdisplacement be arranged, allow the folder pile framing that is installed in main workboat deck move and to be against on the king pile, king pile is applied the power of a sensing ship stern direction to ship stern direction to ship stern direction, point under the effect of ship stern direction power at this, make king pile reduce inclination to stem one side; When king pile during to ship stern lopsidedness, strain main workboat stem anchor hawser, make the stressed tension of this ship stern bower anchor cable, simultaneously ship aft anchor cable is slightly loosened, make boats and ships microdisplacement be arranged, allow the folder pile framing that is installed in main workboat deck move and to be against on the king pile, king pile is applied a power of pointing to the stem direction to the stem direction to the stem direction, point under the effect of stem direction power at this, make king pile reduce inclination to ship stern one side; When king pile during to boats and ships larboard lopsidedness, strain main workboat starboard anchor hawser, make the stressed tension of this starboard anchor hawser, simultaneously the larboard anchor hawser is slightly loosened, make boats and ships astarboard direction that microdisplacement be arranged, allow the folder pile framing that is installed in main workboat deck move and to be against on the king pile, king pile is applied the power of a sensing boats and ships starboard direction to the starboard direction of boats and ships, point under the effect of starboard direction power at this, make king pile reduce inclination to boats and ships larboard one side; When king pile during to boats and ships starboard lopsidedness, strain main workboat larboard anchor hawser, make the stressed tension of this larboard anchor hawser, simultaneously the starboard anchor hawser is slightly loosened, make boats and ships aport direction microdisplacement is arranged, allow the folder pile framing that is installed in main workboat deck move and to be against on the king pile to boats and ships larboard direction, king pile is applied the power of a sensing boats and ships larboard direction, point under the effect of larboard direction power at this, make king pile reduce inclination to boats and ships starboard one side; The accurate adjustment step of described king pile squareness is, after the coarse adjustment of king pile squareness process, if king pile is still to the stem lopsidedness, ship stern place winch wirerope is put in tension, make the stressed tension of winch wirerope, slightly loosen stem place winch wirerope simultaneously, allow the winch wirerope at ship stern place and stem place make a concerted effort to point to the ship stern, king pile further reduces to the degree of stem lopsidedness under this force action, until arriving designing requirement; After the coarse adjustment of king pile squareness process, if king pile is still to ship stern lopsidedness, stem place winch wirerope is put in tension, make the stressed tension of winch wirerope, slightly loosen simultaneously ship stern place winch wirerope, allow the winch wirerope at ship stern place and stem place make a concerted effort to point to stem, king pile can further reduce to the degree of ship stern lopsidedness under this force action, until arriving designing requirement.
The mounting process of aforesaid offshore oil single-leg jacket-type platform, wherein the pilot sleeve installation steps comprise the turnover hoisting and the installation in place of pilot sleeve; Pilot sleeve (Guardian sleeve) is before standing up lifting, setting up on the pilot sleeve earlier as the scaffold of back in place workmen's operation platform on king pile and at the master collet one end barrel welding several piece guide plate along the circumferential direction of pilot sleeve, the absolute altitude of setting scaffold when setting up scaffold is that putlock is higher than the height of water surface splash zone at the incoming tide, sets scaffold and is of a size of 2 to 3 meters * 2 to 3 meters; Scaffold building is located more than 1.0 ± 0.2 meters at the pilot sleeve highest tide level; Position, geographical north and platform position northwards on the pilot sleeve mark then, and determine that according to the absolute altitude of scaffold pilot sleeve is enclosed within final absolute altitude in place on the king pile, at this final absolute altitude position welding polylith backing plate (Seat plate); At last by the crane barge on the main workboat with the pilot sleeve turnover hoisting and make master collet be set on the king pile and in place on backing plate.
The mounting process of aforesaid offshore oil single-leg jacket-type platform, wherein imperial crown plate installation steps are the top that the imperial crown plate is installed in king pile and pilot sleeve master collet gap, weld then, and the master collet of king pile and pilot sleeve is fixed; The sequence of erection of this imperial crown plate is 0 point, 6 points, 2 points, 8 points, 4 and 10 positions along king pile sidewall circumferencial direction, strengthens the fixed effect of pilot sleeve master collet and king pile 2 behind the installation imperial crown plate.
The mounting process of aforesaid offshore oil single-leg jacket-type platform, wherein taper pile construction operation step comprises pitching pile, piling and the pile extension welding step of taper pile; The pitching pile step of this taper pile is by the main workboat loop wheel machine taper pile of slinging, start the winch on the main workboat deck simultaneously, under the cooperatively interacting of loop wheel machine and winch, under the control pitching of pile state consistent taper pile passed behind the auxiliary socket in the insertion mud 10 ± 0.5 meters, finish the operation of taper pile pitching pile with the auxiliary socket gradient of pilot sleeve; Carry out the piling work step after the operation of taper pile pitching pile, it is 35 ± 5KJ that drive hammer energy is set in this piling, and striking frequency is to hit 1 to 3 time in per 1 to 3 second, and the drive hammer gradient of slinging is corresponding with pitching of pile; This pile extension job step is to make next save the top of the last joint taper pile of slotting point discrepancy of taper pile next joint taper pile pulling by the winch that is installed on the main workboat; After the taper pile operation is finished, taper pile and gap plate are welded.
The mounting process of aforesaid offshore oil single-leg jacket-type platform, wherein the gap plate installation steps are the top that gap plate is installed in taper pile and pilot sleeve auxiliary socket gap, then gap plate are welded on the taper pile; The sequence of erection of this gap plate is 0 point, 6 points, 2 points, 8 points, 4 and 10 positions along taper pile sidewall circumferencial direction, and gap plate all group fixes the auxiliary socket of taper pile and pilot sleeve to after installing.
The mounting process of aforesaid offshore oil single-leg jacket-type platform, wherein guide plate is 6, and this guide plate is uniform respectively to be welded on the master collet and auxiliary socket one end barrel of pilot sleeve, and the height of guide plate is 0.5 ± 0.5 meter.
The beneficial effect of the mounting process of offshore oil single-leg jacket-type platform of the present invention can be saved a large amount of steel that are used for platform construction; Can adopt small-sized crane barge and gypsy winch during shipment, avoid using large-scale floating crane and heavy duty winch, reduce the shipment cost greatly; During transportation, can adopt little tonnage barge and fraction horsepower tugboat equally, effectively reduce traffic cost; During installation, adopt small-sized crane barge ship, avoid using the large-scale floating crane ship, cost of installation is reduced; The mounting process route design is scientific and reasonable, can increase work efficiency, reduce installation risk, and can strengthen safety and reliability that platform uses, effectively reduce the marginal oil field cost comprehensively, for healthy and safe and environmental protection (HSE) construction environment provide necessary guarantee, meet strategy of sustainable development requirement simultaneously.
Description of drawings:
Fig. 1 is the perspective view of offshore oil single-leg jacket-type platform.
Fig. 2 is offshore oil single-leg jacket-type platform king pile of the present invention, pilot sleeve and taper pile mounting structure scheme drawing.
Fig. 3 is an offshore oil single-leg jacket-type platform bottom section mounting structure scheme drawing of the present invention.
Fig. 4 presss from both sides the pile frame construction scheme drawing for the present invention.
Major label description in figure: 1 topside, 11 topside spud legs, 2 king piles, 3 taper piles, 4 pilot sleeves, 41 master collets, 42 auxiliary sockets, 43 support tubes, 5 guide plates, 6 gap plates, 7 imperial crown plates, 8 folder pile framings, 81 folder pile framing both wings, 82 folder pile framing bearing pins, 9 main workboat decks, 10 by the ship platform.
The specific embodiment
Shown in Fig. 1 to 4, the mounting process of offshore oil single-leg jacket-type platform of the present invention, comprise that main workboat is in place, barge is in place, jacket platform bottom section construction operation, topside 1 are installed, by ship platform 10 install, anode is installed under water, the drill conductor clamp is installed and platform cleans and checks and accepts; This topside is installed installation, sandblast and the touch-up paint that comprises platform, aisle and railing; It is characterized in that this bottom section construction operation comprises step in regular turn: king pile 2 construction operation steps, pilot sleeve 4 installation steps, imperial crown plate 7 installation steps, taper pile 3 construction operation steps and gap plate 6 installation steps.
Shown in Fig. 1 to 4, the mounting process of offshore oil single-leg jacket-type platform of the present invention, wherein, king pile 2 construction operation steps comprise accurate adjustment and the piling and the pile extension of the coarse adjustment of king pile squareness and pitching pile, king pile squareness; The accurate adjustment of the coarse adjustment of these king pile 2 squareness and pitching pile, king pile 2 squareness and piling are to finish by the winch, folder pile framing 8 (Caisson installation aids) and the hydraulicefficiency windlass operation that are installed on the main workboat; When the coarse adjustment of these king pile 2 squareness and pitching pile, elder generation mark geographical north and platform position northwards on king pile, hold king pile by the winch wirerope then, make king pile by stand up on the barge sling after, the wirerope gib head of loweing earlier enters in the seawater length of 10 ± 0.5 meters of king pile 2 bottoms, close bearing pin 82 after then king pile 2 being moved into folder pile framing inside by folder pile framing 8 outsides, transfer the wirerope gib head then, make king pile 2 by gravitys freely go into 10 ± 0.5 meters in mud, go in the mud process and measure the king pile squareness at any time with the electronics miter square; When the accurate adjustment of these king pile 2 squareness and piling, set drive hammer energy and striking frequency, and measure the king pile squareness at any time, carry out the leveling operation at any time, the error that makes king pile 2 squareness is less than 0.1 degree; This pile extension step is that king pile 2 is docked with topside 1, and king pile 2 is the formula that staggers with 11 butt welds of topside 1 spud leg, and the angle that staggers is that 40 degree are to 90 degree; Folder pile framing 8 comprises that correspondence one end of 81, two flanks 81 of two flanks of steel connects by the bearing pin 82 that can open and close freely, and two flank 81 corresponding other ends are weldingly fixed on the workboat deck 9; The coarse steps of king pile 2 squareness is to carry out coarse adjustment when king pile 2 squareness off-design standards, departs from scope for more than spending greater than king pile squareness 2; The coarse adjustment mode is when king pile during to the stem lopsidedness, strain main workboat ship aft anchor cable, make the stressed tension of this ship aft anchor cable, simultaneously the stem anchor hawser is slightly loosened, make boats and ships microdisplacement be arranged, allow the folder pile framing 8 that is installed in main workboat deck 9 move and to be against on the king pile 2, king pile 2 is applied the power of a sensing ship stern direction to ship stern direction to ship stern direction, point under the effect of ship stern direction power at this, make king pile 2 reduce inclination to stem one side; When king pile 2 during to ship stern lopsidedness, strain main workboat stem anchor hawser, make the stressed tension of this ship stern bower anchor cable, simultaneously ship aft anchor cable is slightly loosened, make boats and ships microdisplacement be arranged, allow the folder pile framing 8 that is installed in main workboat deck 9 move and to be against on the king pile 2, king pile 2 is applied a power of pointing to the stem direction to the stem direction to the stem direction, point under the effect of stem direction power at this, make king pile 2 reduce inclination to ship stern one side; When king pile 2 during to boats and ships larboard lopsidedness, strain main workboat starboard anchor hawser, make the stressed tension of this starboard anchor hawser, simultaneously the larboard anchor hawser is slightly loosened, make boats and ships astarboard direction that microdisplacement be arranged, allow the folder pile framing 8 that is installed in main workboat deck 9 move and to be against on the king pile 2, king pile 2 is applied the power of a sensing boats and ships starboard direction to the starboard direction of boats and ships, point under the effect of starboard direction power at this, make king pile 2 reduce inclination to boats and ships larboard one side; When king pile 2 during to boats and ships starboard lopsidedness, strain main workboat larboard anchor hawser, make the stressed tension of this larboard anchor hawser, simultaneously the starboard anchor hawser is slightly loosened, make boats and ships aport direction microdisplacement is arranged, allow the folder pile framing 8 that is installed in main workboat deck 9 move and to be against on the king pile 2 to boats and ships larboard direction, king pile 2 is applied the power of a sensing boats and ships larboard direction, point under the effect of larboard direction power at this, make king pile 2 reduce inclination to boats and ships starboard one side; The accurate adjustment step of described king pile 2 squareness is, after the coarse adjustment of king pile 2 squareness process, if king pile is still to the stem lopsidedness, ship stern place winch wirerope is put in tension, make the stressed tension of winch wirerope, slightly loosen stem place winch wirerope simultaneously, allow the winch wirerope at ship stern place and stem place make a concerted effort to point to the ship stern, king pile further reduces to the degree of stem lopsidedness under this force action, until arriving designing requirement; After the coarse adjustment of king pile squareness process, if king pile is still to ship stern lopsidedness, stem place winch wirerope is put in tension, make the stressed tension of winch wirerope, slightly loosen simultaneously ship stern place winch wirerope, allow the winch wirerope at ship stern place and stem place make a concerted effort to point to stem, king pile can further reduce to the degree of ship stern lopsidedness under this force action, until arriving designing requirement; Pilot sleeve 4 installation steps comprise the turnover hoisting and the installation in place of pilot sleeve 4; Pilot sleeve (Guardian sleeve) is before standing up lifting, setting up on the pilot sleeve 4 earlier as the scaffold of back in place workmen's operation platform on king pile 2 and at the master collet 41 1 ends barrel welding several piece guide plate 5 along the circumferential direction of pilot sleeve 4, the absolute altitude of setting scaffold when setting up scaffold is that putlock is higher than the height of water surface splash zone at the incoming tide, sets scaffold and is of a size of 2 to 3 meters * 2 to 3 meters; Scaffold building is located more than 1.0 ± 0.2 meters at the pilot sleeve highest tide level; Position, geographical north and platform position northwards on pilot sleeve 4 marks then, and determine that according to the absolute altitude of scaffold pilot sleeve is enclosed within final absolute altitude in place on the king pile, at this final absolute altitude position welding polylith backing plate (Seat plate), present embodiment is 4 backing plate (not shown) of welding; At last by the crane barge on the main workboat with the pilot sleeve turnover hoisting and make master collet 41 be set on the king pile and on backing plate imperial crown plate 7 installation steps in place be the top that imperial crown plate 7 is installed in king pile 2 and pilot sleeve 4 gaps, weld then, make king pile 2 and pilot sleeve 4 fixing; The sequence of erection of this imperial crown plate 7 is along 0 point of king pile 2 sidewall circumferencial directions, 6 points, 2 points, 8 points, 4 and 10 positions, and the fixed effect that pilot sleeve master collet 41 and king pile 2 are strengthened in imperial crown plate 7 backs is installed; Taper pile 3 construction operation steps comprise pitching pile, piling and the pile extension welding step of taper pile; The pitching pile step of this taper pile 3 is by the main workboat loop wheel machine taper pile of slinging, start the winch (not shown) on the main workboat deck simultaneously, under the cooperatively interacting of loop wheel machine and winch, under the control pitching of pile state consistent taper pile passed behind the auxiliary socket in the insertion mud 10 ± 0.5 meters, finish the operation of taper pile pitching pile with the auxiliary socket gradient of pilot sleeve; Carry out the piling work step after the taper pile 3 pitching pile operations, it is 35 ± 5KJ that drive hammer energy is set in this piling, and striking frequency is to hit 1 to 3 time in per 1 to 3 second, and the drive hammer gradient of slinging is corresponding with pitching of pile; This pile extension job step is to make next save the top of the last joint taper pile of slotting point discrepancy of taper pile next joint taper pile pulling by the winch that is installed on the main workboat; After the taper pile operation is finished, taper pile and gap plate 6 are welded; These gap plate 6 installation steps are the top that gap plate 6 is installed in auxiliary socket 42 gaps of taper pile 3 and pilot sleeve, then gap plate 6 are welded on the taper pile 3; The sequence of erection of this gap plate 6 is 0 point, 6 points, 2 points, 8 points, 4 and 10 positions along taper pile sidewall circumferencial direction, and gap plate 6 all group makes taper pile 2 fixing with the auxiliary socket 42 of pilot sleeve to after installing; Described guide plate 5 is 6, and this guide plate 5 is uniform respectively to be welded on the master collet 41 and auxiliary socket 42 1 end barrels of pilot sleeve, and the height of guide plate 5 is 0.5 ± 0.5 meter.
Embodiment (consulting Fig. 2) to shown in Figure 4:
Solely the sea of leg platform (Zelda-F Monopod) is installed and mainly be may further comprise the steps: the investigation of the in place and on-the-spot submarine geomorphy of (1) main workboat; (2) barge is in place by main workboat; (3) king pile 2 construction operations; (4) pilot sleeve 4 is installed: (5) install imperial crown plate 7; (6) taper pile 3 construction operations; (7) gap plate 6 is installed; (8) install by ship platform 10: (9) are the installation of anode and drill conductor clamp under water; (10) lifting of topside 1; (11) walk installation, sandblast, the touch-up paint of annexes such as guidance tape railing; (12) platform cleans and checks and accepts; (14) make a return voyage.
The hydraulicefficiency windlass that fitting operation is good on main workboat also perform corresponding windlass pull test, winch is installed and presss from both sides pile framing (Caisson installation aids); This folder pile framing comprises that correspondence one end of 81, two flanks 81 of two flanks of steel connects by the bearing pin 82 that can open and close freely, and two flank 81 corresponding other ends are weldingly fixed on main workboat deck 9, as shown in Figure 4.
The pitching pile of king pile 2: the connection bearing pin 82 that will press from both sides 8 two flanks of pile framing before the pitching pile is opened, king pile 2 by stand up on the barge sling after, the gib head of loweing makes the about 10 meters left and right sides entry in king pile 2 bottoms, improves the stability of king pile 2 when in place; King pile 2 moves into folder pile framing 8 by the outside, closes bearing pin 82 then; Transfer gib head, king pile 2 is freely gone into rice surplus the mud 10 under the self gravitation effect, go into the mud process is measured king pile 2 at any time with the electronics miter square squareness.
The piling of king pile 2 and squareness adjustment: drive hammer is sling and is treated stable back cover king pile 2, at any time measure the king pile squareness in the piling process, (designing requirement king pile perpendicularity deviation ± 1 degree when deflection appears in king pile 2, Zelda-F complete at last the king pile error of perpendicularity be 0.1 the degree), start the hydraulicefficiency windlass of main workboat, by the fine setting accommodation folder pile framing level is promoted or the pulling king pile, realize the coarse adjustment of king pile squareness, start winch simultaneously, accurate adjustment and keep the king pile squareness once more, after the final section king pile is got to the mud degree of depth, in time measure the elevation with the water surface bended forward of soil in the stake, and definite bearing capacity of pile foundation.
The pile extension of king pile: the platform topside is directly welded on the king pile of topmost, makes when going up most a king pile and docking with the spud leg 11 of topside 1 weld seam 90 degree that stagger during pile extension.
The turnover hoisting of pilot sleeve 4 and installation in place: pilot sleeve 4 (Guardian sleeve) is to lie low to carry out land formation and seat transport on the frame of having a rest, and marine crane barge ship stands up pilot sleeve and carries out hoisted in position again.Before standing up lifting, set up scaffold on the pilot sleeve earlier, the position in mark geographical north, platform north before the pilot sleeve lifting, and according to the result of a measurement of the depth of water and absolute altitude, judge that pilot sleeve puts king pile final absolute altitude in place, 4 backing plates (Seat plate) in design attitude welding make the master collet 41 of pilot sleeve 4 be set on the king pile 2 and in place temporarily on the backing plate (not shown).
The installation of imperial crown plate 7: imperial crown plate 7 is installed in king pile and top, pilot sleeve gap, then the imperial crown plate is welded on the king pile 2, the sequence of erection of imperial crown plate 7 is 0 point, 6 points, 2 points, 8 points, 4 and 10 positions along king pile 2 circumferencial directions, imperial crown plate 7 all group makes pilot sleeve 4 fixing and to reach centering vertical to after installing.
The pitching pile of taper pile and piling:
Two cover taper piles 3 make taper pile reach the heeling condition of about 14 degree by winch, consistent with the angle of inclination of the auxiliary socket 42 of pilot sleeve 4,6 guide plates of uniform welding (Guide plate) on the master collet 41 of pilot sleeve 4 and auxiliary socket 42 1 end barrels respectively simultaneously, in place with auxiliary taper pile 3.
Carry out piling work after the operation of taper pile pitching pile, it is 35 ± 5KJ that drive hammer energy is set in this piling, and striking frequency is to hit 2 times in per 1 second, and the drive hammer gradient of slinging is controlled at 14 degree, and is corresponding with pitching of pile; The pile extension operation is by the winch that is installed on the main workboat top that taper pile is held the last joint taper pile of slotting point discrepancy that makes back one joint taper pile to be saved in back one, welds in the docking section then; After the taper pile operation is finished, at the auxiliary socket 42 clearance portion assemblage gap plates 6 of taper pile 3 with pilot sleeve, the sequence of erection of this gap plate 6 is 0 point, 6 points, 2 points, 8 points, 4 and 10 positions along taper pile sidewall circumferencial direction, gap plate all group welds after installing, and makes taper pile 3 fixing with the auxiliary socket 42 of pilot sleeve.
Annex and topside are installed: annex is installed and is comprised by ship platform (Boat landing) 10, the installation of anode clamp (Anode clamp), drill conductor clamp (Conductor clamp), ladder access (Stair) under water, be prior art, so give unnecessary details no longer in detail; Be that the content that describes is a prior art in the present embodiment, also do not give unnecessary details.
When offshore oil single-leg jacket-type platform of the present invention is installed, with the depth of water be that 24 meters common conduit shelf-type platform mounting process compares, steel are saved about 1000 tons, main workboat is reduced to 400 tons of crane barges by 1700 tons of crane barges, transportation pontoon is reduced to 5000 tons of barges by 10000 tons of barges, reduces shipment cost, traffic cost and cost of installation greatly; The mounting process route design is scientific and reasonable, can increase work efficiency, because mounting tools and installing component reduce, has reduced large-scale operation, therefore can reduce installation risk; Press from both sides the design and the application of pile framing in addition, also reduced king pile the risk that gradient exceeds standard is installed, the use of deck winch has reduced the risk of the accurate adjustment difficulty of king pile squareness, and the design of backing plate and application have reduced the risk of pilot sleeve absolute altitude error; Therefore, offshore oil single-leg jacket-type platform mounting process of the present invention can effectively reduce the marginal oil field cost comprehensively, for healthy and safe and environmental protection (HSE) construction environment provide necessary guarantee, meets strategy of sustainable development requirement simultaneously.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (9)
1. the mounting process of an offshore oil single-leg jacket-type platform, comprise that main workboat is in place, barge is in place, jacket platform bottom section construction operation, topside are installed, by the ship platform install, anode is installed under water, the drill conductor clamp is installed and platform cleans and checks and accepts; This topside is installed installation, sandblast and the touch-up paint that comprises platform, aisle and railing; It is characterized in that this bottom section construction operation comprises step in regular turn: king pile construction operation step, pilot sleeve installation steps, imperial crown plate installation steps, taper pile construction operation step and gap plate installation steps.
2. the mounting process of offshore oil single-leg jacket-type platform according to claim 1 is characterized in that, described king pile construction operation step comprises accurate adjustment and the piling and the pile extension of the coarse adjustment of king pile squareness and pitching pile, king pile squareness;
The accurate adjustment of the coarse adjustment of this king pile squareness and pitching pile, king pile squareness and piling are to finish by the winch, folder pile framing and the hydraulicefficiency windlass operation that are installed on the main workboat; When the coarse adjustment of this king pile squareness and pitching pile, elder generation mark geographical north and platform position northwards on king pile, hold king pile by the winch wirerope then, make king pile by stand up on the barge sling after, the wirerope gib head of loweing earlier enters in the seawater length of 10 ± 0.5 meters of king pile bottoms, close bearing pin after then king pile being moved into folder pile framing inside by the folder pile framing outside, transfer the wirerope gib head then, make the king pile by gravity freely go into 10 ± 0.5 meters in mud, go in the mud process and measure the king pile squareness at any time with the electronics miter square;
When the accurate adjustment of this king pile squareness and piling, set drive hammer energy and striking frequency, and measure the king pile squareness at any time, carry out the leveling operation at any time, the error that makes the king pile squareness is less than 0.1 degree;
This pile extension step is that king pile is docked with topside, and king pile and topside butt weld are the formula that staggers, and the angle that staggers is that 40 degree are to 90 degree.
3. the mounting process of offshore oil single-leg jacket-type platform according to claim 2, it is characterized in that, described folder pile framing comprises two flanks of steel, two corresponding ends of flank connect by the bearing pin that can open and close freely, and two corresponding other ends of flank are weldingly fixed on the workboat deck.
4. the mounting process of offshore oil single-leg jacket-type platform according to claim 2, it is characterized in that, the coarse steps of described king pile squareness is to carry out coarse adjustment when king pile squareness off-design standard, departs from scope for more than spending greater than king pile squareness 2;
The coarse adjustment mode is when king pile during to the stem lopsidedness, strain main workboat ship aft anchor cable, make the stressed tension of this ship aft anchor cable, simultaneously the stem anchor hawser is slightly loosened, make boats and ships microdisplacement be arranged, allow the folder pile framing that is installed in main workboat deck move and to be against on the king pile, king pile is applied the power of a sensing ship stern direction to ship stern direction to ship stern direction, point under the effect of ship stern direction power at this, make king pile reduce inclination to stem one side;
When king pile during to ship stern lopsidedness, strain main workboat stem anchor hawser, make the stressed tension of this ship stern bower anchor cable, simultaneously ship aft anchor cable is slightly loosened, make boats and ships microdisplacement be arranged, allow the folder pile framing that is installed in main workboat deck move and to be against on the king pile, king pile is applied a power of pointing to the stem direction to the stem direction to the stem direction, point under the effect of stem direction power at this, make king pile reduce inclination to ship stern one side;
When king pile during to boats and ships larboard lopsidedness, strain main workboat starboard anchor hawser, make the stressed tension of this starboard anchor hawser, simultaneously the larboard anchor hawser is slightly loosened, make boats and ships astarboard direction that microdisplacement be arranged, allow the folder pile framing that is installed in main workboat deck move and to be against on the king pile, king pile is applied the power of a sensing boats and ships starboard direction to the starboard direction of boats and ships, point under the effect of starboard direction power at this, make king pile reduce inclination to boats and ships larboard one side;
When king pile during to boats and ships starboard lopsidedness, strain main workboat larboard anchor hawser, make the stressed tension of this larboard anchor hawser, simultaneously the starboard anchor hawser is slightly loosened, make boats and ships aport direction microdisplacement is arranged, allow the folder pile framing that is installed in main workboat deck move and to be against on the king pile to boats and ships larboard direction, king pile is applied the power of a sensing boats and ships larboard direction, point under the effect of larboard direction power at this, make king pile reduce inclination to boats and ships starboard one side;
The accurate adjustment step of described king pile squareness is, after the coarse adjustment of king pile squareness process, if king pile is still to the stem lopsidedness, ship stern place winch wirerope is put in tension, make the stressed tension of winch wirerope, slightly loosen stem place winch wirerope simultaneously, allow the winch wirerope at ship stern place and stem place make a concerted effort to point to the ship stern, king pile further reduces to the degree of stem lopsidedness under this force action, until arriving designing requirement; After the coarse adjustment of king pile squareness process, if king pile is still to ship stern lopsidedness, stem place winch wirerope is put in tension, make the stressed tension of winch wirerope, slightly loosen simultaneously ship stern place winch wirerope, allow the winch wirerope at ship stern place and stem place make a concerted effort to point to stem, king pile can further reduce to the degree of ship stern lopsidedness under this force action, until arriving designing requirement.
5. the mounting process of offshore oil single-leg jacket-type platform according to claim 1 is characterized in that, described pilot sleeve installation steps comprise the turnover hoisting and the installation in place of pilot sleeve; Pilot sleeve is before standing up lifting, setting up on the pilot sleeve earlier as the scaffold of back in place workmen's operation platform on king pile and at the master collet one end barrel welding several piece guide plate along the circumferential direction of pilot sleeve, the absolute altitude of setting scaffold when setting up scaffold is that putlock is higher than the height of water surface splash zone at the incoming tide, sets scaffold and is of a size of 2 to 3 meters * 2 to 3 meters; Scaffold building is located more than 1.0 ± 0.2 meters at the pilot sleeve highest tide level; Position, geographical north and platform position northwards on the pilot sleeve mark then, and determine that according to the absolute altitude of scaffold pilot sleeve is enclosed within final absolute altitude in place on the king pile, at this final absolute altitude position welding polylith backing plate; At last by the crane barge on the main workboat with the pilot sleeve turnover hoisting and make master collet be set on the king pile and in place on backing plate.
6. the mounting process of offshore oil single-leg jacket-type platform according to claim 1, it is characterized in that, described imperial crown plate installation steps are the top that the imperial crown plate is installed in king pile and pilot sleeve master collet gap, weld then, and the master collet of king pile and pilot sleeve is fixed; The sequence of erection of this imperial crown plate is 0 point, 6 points, 2 points, 8 points, 4 and 10 positions along king pile sidewall circumferencial direction.
7. the mounting process of offshore oil single-leg jacket-type platform according to claim 1 is characterized in that, described taper pile construction operation step comprises pitching pile, piling and the pile extension welding step of taper pile; The pitching pile step of this taper pile is by the main workboat loop wheel machine taper pile of slinging, start the winch on the main workboat deck simultaneously, under the cooperatively interacting of loop wheel machine and winch, under the control pitching of pile state consistent taper pile passed behind the auxiliary socket in the insertion mud 10 ± 0.5 meters, finish the operation of taper pile pitching pile with the auxiliary socket gradient of pilot sleeve; Carry out the piling work step after the operation of taper pile pitching pile, it is 35 ± 5KJ that drive hammer energy is set in this piling, and striking frequency is to hit 1 to 3 time in per 1 to 3 second, and the drive hammer gradient of slinging is corresponding with pitching of pile; This pile extension job step is to make next save the top of the last joint taper pile of slotting point discrepancy of taper pile next joint taper pile pulling by the winch that is installed on the main workboat; After the taper pile operation is finished, taper pile and gap plate are welded.
8. the mounting process of offshore oil single-leg jacket-type platform according to claim 1, it is characterized in that, described gap plate installation steps are the top that gap plate is installed in the auxiliary socket gap of taper pile and pilot sleeve, then gap plate are welded on the taper pile; The sequence of erection of this gap plate is 0 point, 6 points, 2 points, 8 points, 4 and 10 positions along taper pile sidewall circumferencial direction, and gap plate all group fixes the auxiliary socket of taper pile and pilot sleeve to after installing.
9. the mounting process of offshore oil single-leg jacket-type platform according to claim 5, it is characterized in that, described guide plate is 6, and this guide plate is uniform respectively to be welded on the master collet and auxiliary socket one end barrel of pilot sleeve, and the height of guide plate is 0.5 ± 0.5 meter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910081366A CN101850829A (en) | 2009-04-03 | 2009-04-03 | Mounting process of offshore oil single-leg jacket-type platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910081366A CN101850829A (en) | 2009-04-03 | 2009-04-03 | Mounting process of offshore oil single-leg jacket-type platform |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104099917A (en) * | 2014-08-07 | 2014-10-15 | 熊翱 | Multilayer multi-foot frame structure and construction method thereof |
| CN104452716A (en) * | 2014-11-17 | 2015-03-25 | 上海外高桥造船有限公司 | Building method for scaffold used for drilling platform pile leg splicing |
| CN107336811A (en) * | 2017-07-31 | 2017-11-10 | 天津中德应用技术大学 | Multiple degrees of freedom offshore platform wash equipment |
| CN107521619A (en) * | 2017-08-29 | 2017-12-29 | 广船国际有限公司 | A kind of ship PV valves operating platform component |
| CN113863357A (en) * | 2021-09-14 | 2021-12-31 | 山东电力工程咨询院有限公司 | Gravity center deviation single-column three-cylinder jacket foundation and construction method |
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2009
- 2009-04-03 CN CN200910081366A patent/CN101850829A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104099917A (en) * | 2014-08-07 | 2014-10-15 | 熊翱 | Multilayer multi-foot frame structure and construction method thereof |
| CN104452716A (en) * | 2014-11-17 | 2015-03-25 | 上海外高桥造船有限公司 | Building method for scaffold used for drilling platform pile leg splicing |
| CN107336811A (en) * | 2017-07-31 | 2017-11-10 | 天津中德应用技术大学 | Multiple degrees of freedom offshore platform wash equipment |
| CN107336811B (en) * | 2017-07-31 | 2023-07-28 | 天津中德应用技术大学 | Multi-degree-of-freedom offshore oil platform cleaning equipment |
| CN107521619A (en) * | 2017-08-29 | 2017-12-29 | 广船国际有限公司 | A kind of ship PV valves operating platform component |
| CN113863357A (en) * | 2021-09-14 | 2021-12-31 | 山东电力工程咨询院有限公司 | Gravity center deviation single-column three-cylinder jacket foundation and construction method |
| CN113863357B (en) * | 2021-09-14 | 2022-10-04 | 山东电力工程咨询院有限公司 | Three-cylinder jacket foundation with gravity center deviated to single column and construction method |
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Application publication date: 20101006 |