A kind of offshore boring island
The utility model relates to a kind of offshore boring island.
Since reform and opening-up, along with the fast development of the constructions such as bridge, harbour, water surface engineering geologic investigation, various operation at sea platforms arise at the historic moment.Offshore boring island has fixed platform and floating platform two classes.Fixed platform has a formula, guy wire formula, gravity, jacket platform, concrete gravity platform, deep water to comply with tower platform etc.Stake formula platform consists of cushion cap and pile foundation.Pile foundation has the kinds such as timber, piling bar and reinforced concrete pile, while constructing, it is squeezed into to seabed, installation platform on it.As Chinese utility model ZL 200720026783.6 Simple offshore drilling platforms, utilize exactly on steel pipe pile and connect the operation at sea platform that box deck forms.
The existing depth of water is less than all operation at sea platforms of 30 meters and all is comprised of pile foundation, spud leg, three major parts of Platform Deck from bottom to top.Offshore Platform all adopts modularization, is characterized in: the large-scale special equipment of platform construction librarian use of specialty, pile foundation underwater operation amount is large, construction cost is high, capacity of anti-storm is strong, standardization, various operating modes have been carried out to computer checking computations, safe and reliable.Small-sized platform construction mostly is the layman and uses amateur ship to build, and pile foundation is vertical steel pointed stake, timber, with piling bar of shoe etc., and the underwater operation amount is very little, nonstandardized technique, construction cost are cheap, the platform operating mode is not carried out to the computer checking computations, capacity of anti-storm is little, poor stability.
For example, Chinese utility model ZL 200720026783.6 Simple offshore drilling platforms, be to utilize on steel pipe pile to connect the operation at sea platform that box deck forms.It has the box-type deck, is connected with the stake of tubulose in Shang Zhuan hole, deck, on the top of stake, is provided with vibrating hammer, upper end in stake is provided with oil cylinder, and oil cylinder is fixedly connected with stake, and oil cylinder is provided with hanging scaffold, be connected with wire rope on hanging scaffold, the other end of wire rope is connected with deck.The various problems such as existing platform construction complexity is loaded down with trivial details, have multiple potential safety hazard, and operation easier is large.Owing to having the box-type deck, cross-sectional area is large, and wind load sharply increases, and turbulent flow, eddy current change aerodynamic force produces and buffet, from exciting, a little less than wind loading rating.Occurring in the marine site, Longkou that 2 platforms topple simultaneously in this kind of platform on October 27th, 2007 is exactly typical case.
The stake of China utility model ZL 200720026783.6 Simple offshore drilling platforms adopts the string nail to be connected with deck, and the string nail is through pile tube, and pile tube can not double as the well head pipe, and plug string nail difficulty is large.
The utility model content
The technical problems to be solved in the utility model is: provide a kind of spud leg can double as the offshore boring island of well head.
In order to solve the problems of the technologies described above, the utility model comprises deck and at least one spud leg for support deck, the body that described spud leg is open at both ends, the outer wall of the upper end of spud leg is connected with deck by latch, and deck is provided with at least one well head communicated with a spud leg.
In order to improve the wind loading rating on deck, described deck comprises chequer plate and supports the skeleton of chequer plate.
For the structural strength that improves deck and the wind loading rating that further improves deck, described skeleton comprises deck rib and keel, the deck rib comprises many parallel channel-section steels, keel comprise many parallel H type shaped steel, channel-section steel and H type shaped steel are perpendicular, chequer plate is fixed on Lei Shang， deck, deck rib and is fixed on keel, chequer plate be provided with guardrail.
For the ease of connecting spud leg and deck, the bottom surface of described chequer plate is provided with pile protection, the pile protection hole communicated with pile protection is arranged on chequer plate, at least one pile protection hole is described well head, the upper end of spud leg is inserted in pile protection, each spud leg at least is connected with the skeleton on deck by two latches, and chequer plate is provided with the latch operation window.
For the ease of the plug latch, described latch comprises pin bushing, pin rod, gear and pin rod slotting ring, pin bushing is fixed on the skeleton on deck, the pin rod slotting ring is fixed on spud leg, pin rod is inserted in pin bushing, gear is arranged on pin bushing, and gear is connected with the handle that driven wheel rotates, and pin rod is provided with a plurality of teeth for being meshed with gear of arranging on the length direction of pin rod.
For pin rod after latch is pegged graft can not slide, described pin bushing is provided with for locking the locking bar of pin rod.
Exit the pin rod slotting ring for the ease of pin rod, between described pin bushing and pin rod, be connected with return spring.
In order to there is best cost performance, i.e. stronger vertical thresold load-carrying ability and the lower manufacturing cost of tool, described spud leg has nine again, is arranged in three row's three row, and deck is provided with the well head communicated with the center spud leg.
For the ease of the platform supply, also include the cage device, the cage device comprises guide rail, cage and hoisting mechanism, guide rail vertically arranges, guide rail is fixed on spud leg, the upper end of guide rail reaches the top, deck through a jiao of deck, and cage is slidably arranged on guide rail, and cage connects the hoisting mechanism that drives cage to slide up and down along guide rail.Guide rail runs through deck up and down, is subject to air quantity little, steadily safety.
The beneficial effects of the utility model are: the utility model adopts the body of open at both ends to make spud leg, and the outer arm of spud leg is connected by latch with deck, makes the spud leg up/down perforation, but make its not only load-bearing but also can be used as well head, for drilling well, can also be used as drilling tool marine riser, three usages of one pile.And the lower end of spud leg is inserted in basis, the inside and outside tube wall of spud leg all contacts with basis, and frictional force is large, and weight capacity is stronger.
The accompanying drawing explanation
Fig. 1 is main TV structure schematic diagram of the present utility model;
Fig. 2 is plan structure schematic diagram of the present utility model;
Fig. 3 is the structural representation on deck of the present utility model;
Fig. 4 is the structural representation of latch of the present utility model;
Fig. 5 is the structural representation of cage device of the present utility model;
In figure: 1, cage device, 2, deck, 3, spud leg, 4, basis, 5, guardrail, 6, the latch operation window, 7, the pile protection hole, 8, chequer plate, 9, deck rib, 10, keel, 11, pin rod, 12, locking bar, 13, pin bushing, 14, return spring, 15, handle, 16, gear, 17, wire rope, 18, the guide rail fixed arm, 19, guide rail, 20, slide block, 21, cage.
The specific embodiment
A kind of specific embodiment as shown in Figure 1, it comprises cage device 1, deck 2 and spud leg 3.
As shown in Figure 3, deck 2 comprises the skeleton of chequer plate 8 and support chequer plate 8.Skeleton comprises deck rib 9 and keel 10, and deck rib 9 comprises many parallel channel-section steels, and keel 10 comprise many parallel H type shaped steel, channel-section steel and H type shaped steel are perpendicular, chequer plate 8 is fixed on deck rib 9, and deck rib 9 is fixed on keel 10, chequer plate 8 be provided with guardrail 5.Chequer plate 8, can be anti-skidding.
As shown in Figure 2, chequer plate 8 is provided with three row three row pile protection holes 7, and the both sides in each pile protection hole 7 respectively are provided with a latch operation window 6.Well head is used as in the pile protection hole 7 that is positioned at center, also can select a pile protection hole as satellite well head again.
Bottom surface at chequer plate 8 is provided with pile protection, each corresponding pile protection in pile protection hole 7, and pile protection hole 7 communicates with corresponding pile protection, is inserted with a spud leg 3 in each pile protection.
The body that spud leg 3 is open at both ends, a spud leg 3 can be the body that a plurality of bodys are connected in series by flange, and the upper end of spud leg 3 is inserted in pile protection, and the outer wall be positioned on the upper end of each spud leg 3 under pile protection is connected with deck 2 by two groups of latches.Thereby pile protection hole 7 is communicated with corresponding spud leg 3.
As shown in Figure 4, latch comprises pin bushing 13, pin rod 11, gear 16 and pin rod slotting ring, pin bushing 13 is fixed on the skeleton on deck 2, pin bushing 13 preferably is fixed on deck rib 9, the pin rod slotting ring is fixed on spud leg 3, and pin rod 11 is inserted in pin bushing 13, and gear 16 is arranged on pin bushing 13, gear 16 is connected with the handle 15 that driven wheel 16 rotates, and pin rod 11 is provided with a plurality of teeth for being meshed with gear 16 of arranging on the length direction of pin rod 11.Pin bushing 13 is provided with the locking bar 12 for locking pin rod 11.Be connected with return spring 14 between pin bushing 13 and pin rod 11.
As shown in Figure 5, cage device 1 comprises guide rail 19, cage 21 and hoisting mechanism, guide rail 19 vertically arranges, guide rail 19 is fixed on spud leg 3 by guide rail fixed arm 18, the upper end of guide rail 19 reaches 2 tops, deck through a jiao of deck 2, cage 21 is slidably arranged on guide rail 19 by slide block 20, cage 21 connects the hoisting mechanism that drives cage 21 to slide up and down along guide rail 19, hoisting mechanism is preferably selected elevator, pulley is set in upper end at guide rail 19, and elevator is connected by the wire rope 17 hung on fixed pulley with cage 21.
Platform is installed construction method:
1, deck is fixed on buoyancy tank, spud leg is hung on pile driving barge.Towage binary buoyancy tank is to well location.Take the center spud leg as well location, and four jiaos of buoyancy tanks cast anchor fixing.
At first squeeze into the Center stake hypomere, successively other hypomere is squeezed on water-bed basis 4, stake ejects 1-2 meters of the waters surface.Then carry out pile extension.Stake is connected to design height.Start hoist, by deck rise to stake top same level on.Immediately buoyancy tank is towed out, in case buoyancy tank and stake collision.
3, platform is installed
At first open the latch operation window, eject successively pin rod and insert in corresponding pin rod slotting ring and locking.The safety barrier of three is installed.Then the cage device is installed successively.
The drilling equipment mounting method:
Successively the equipment such as rig, generator, steel wire and slush pump, mud pit, sedimentation basin are hung on to the design attitude of platform.Install the another side guardrail.The installation of the equipment such as rig is fastening, and debugging.