CN103507109A - Underwater dry type cutting cabin and application method thereof - Google Patents
Underwater dry type cutting cabin and application method thereof Download PDFInfo
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- CN103507109A CN103507109A CN201310473184.9A CN201310473184A CN103507109A CN 103507109 A CN103507109 A CN 103507109A CN 201310473184 A CN201310473184 A CN 201310473184A CN 103507109 A CN103507109 A CN 103507109A
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Abstract
The invention provides an underwater dry type cutting cabin. The underwater dry type cutting cabin comprises a construction platform located on the water and an operation barrel located under the water, wherein the upper end of the operation barrel is closed, and the lower end of the operation barrel is open. The construction platform is provided with a plurality of connection channels which enable external air and the inside of the operation barrel to be communicated. The cutting cabin further comprises a submersible sewage pump and a high-pressure mud flushing pipe system, wherein the submersible sewage pump can penetrate through the connection channels and enter the inside of the operation barrel. The invention further provides an application method of the underwater dry type cutting cabin. According to the underwater dry type cutting cabin and the application method of the underwater dry type cutting cabin, a dry type environment where construction workers can carry out construction operation is created inside the operation barrel, and therefore the construction of cutting drill conductors, pile legs and the like of discarded platforms can be easier and more convenient; in addition, the underwater dry type cutting cabin can be reused, construction time is short, cost is saved, seawater environment can be recovered completely after cutting is completed, the underwater dry type cutting cabin does not have any influence on ocean ecology, and therefore effective technical support is provided for dismantling the discarded oil platforms in China.
Description
Technical field
The present invention relates to a kind of underwater dry-type cutting cabin.
The invention still further relates to the using method in a kind of underwater dry-type cutting cabin
Background technology
Jacket platform, as the fixed offshore and gas development platform of a kind of shallow water, is played an important role in offshore and gas development, and it is by being fixed on the jacket in seabed and being fixed on jacket upper end and forming higher than the platform on sea level.According to statistics, the jacket quantity that China is on active service at present has tens, wherein has a large amount of platform Years Of Services to approach or surpassed projected life, maximum with the old platform quantity of Bohai Offshore.The projected life of general marine jacket platform is about 20 years; according to the regulation of the laws and regulations such as Marine Environmental Protection Law and " offshore platform is thrown aside and managed Tentative Measures "; the jacket platform operation life-span, to after date, if there is no other purposes, must be discarded dismounting.
For the oil well that will scrap dismounting, implement to remove before operation and must carry out application acquisition that oil well engineering scraps to competent departments concerned and examine, and before removing, must note ash and the reliable treatments such as shut.
In confirming oil well, oily (can survey if desired quick-fried) afterwards, does not need near waterproof casing cutting catheter frame seabed.Before near waterproof casing cutting catheter frame seabed, also to dispose the inside and outside deposition of waterproof casing, to arrange between clearancen, can put cutting tool into.For cutting under water, marine lifting, transportation, unloading are placed, dredging deposition seems than being easier to, in fact really not so.Reference points out, in the demolishing process of 100m depth of water platform, dredging deposition is the most difficult operation.The technological difficulties of this operation have: dredge pump is inhaled limited, large to the degree of depth situation of the degree of depth of mud, must adopt the higher technology of this difficulty of underwater dredge pump; The inside and outside deposition of pipe is generally all hardened very much, before inhaling mud, must break up dilution with water under high pressure, and the equipment of deep water construction task difficulty, configuration, expense all can significantly improve; Deposition is also not all mud, mixes and has larger stone, foreign material, though adopt dredge pump suction mud or airlift way effectively, efficiency is very low.The dismounting of well head has following three kinds of schemes conventionally:
1), with high pressure water flushing mud, gas lift method spoil disposal, by the outer side blow mud of every waterproof casing, make the following dell that forms 3～5 meters of waterproof casing mud face; Diver installs " multifunctional efficient diamond wire saw machine " to the end, hole, cuts one by one after well head, by after the cutting of jacket top waterproof casing bearing, waterproof casing can be sling, and installs on barge;
2), with high pressure water flushing mud, gas lift method spoil disposal, in every waterproof casing outside, form the dell of 3～5 meters; Diver is waterproof casing outside dress slurry explosives in hole, carries out directional blasting, the bearing between cutting waterproof casing and jacket, weldering suspension centre or a hole of holding funeral rites on waterproof casing; Hang out successively waterproof casing, well head inner sleeve, install on barge;
3), with high pressure water flushing mud, gas lift method spoil disposal, in every waterproof casing outside, form the dell of 3～5 meters; In waterproof casing, put into explosive, in hole, carry out explosion, after blowing up, handling shipment.
In several well head Demolition Schemes, common construction content has high pressure water flushing mud, gas lift method spoil disposal above, by the outer side blow mud of every waterproof casing, makes the following dell that forms 3～5 meters of waterproof casing mud face, owing to being at extra large subaqueous work, rush mud and spoil disposal all more difficult, and the mud having rushed is easy to be backfilling into waterproof casing dell around after precipitation, mud can not be constructed again muddy in the situation that, must wait that seawater is limpid just can carry out afterwards, through rear portion mud after a while, be backfilling into again dell like this, presumablely need to again rush mud, therefore rush mud spoil disposal construction volume very large, the area in mud pit is also very large, and follow-up work pipe cutting, the outer explosion of pipe etc. all needs diver's underwater operation, difficulty is larger, expense is higher, explosion also can polluted seawater environment, destroy ecological environment.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of underwater dry-type cutting cabin and using method, while cutting for solving prior art waterproof casing, spoil disposal is difficult, cutting operation difficulty is large under water, expense is high, the problem of polluted seawater environment.
For achieving the above object and other relevant objects, the invention provides a kind of underwater dry-type cutting cabin, it comprises the operation cylinder that is positioned at operation platform waterborne and is positioned at upper end closed lower ending opening under water, operation platform is provided with a plurality of interface channels, and interface channel is connected extraneous air and operation cylinder inside; Cutting cabin also comprises can enter through interface channel the blow-off line of operation cylinder inside, and blow-off line is positioned at the inner one end of operation cylinder and is communicated with submersible sewage pump, and blow-off line is communicated with extraneous air near one end of operation platform; Cutting cabin also comprises that can pass interface channel enter the inner high pressure mud flushing tube system of operation cylinder, and high pressure mud flushing tube system is communicated with high pressure water system near one end of operation platform, and high pressure water system is controlled high pressure mud flushing tube system and sprayed water under high pressure.
Preferably, operation cylinder is Suction anchor buckets, and operation cylinder is provided with pump interface and injecting hole, and pump interface is noted drainage equipment with suction anchor and is communicated with, and injecting hole is communicated with high pressure air system by gas injection pipeline, and gas injection pipeline is provided with controlled valve; On interface channel, being also provided with can isolating exterior air and the inner isolation structure of operation cylinder.Further preferably, interrupter comprises the blind hole flange that can cover in interface channel upper port, and blind hole flange is connected by hinged bolt with interface channel upper port.
Preferably, the quantity of interface channel is three, and wherein two is construction passage, and one is artificial channel, and artificial channel is provided with vertical cat ladder.Further preferred, it is the horn mouth that sectional area increases successively from top to bottom that construction passage is positioned at the inner port of operation cylinder.
Preferably, it also comprises can enter through interface channel the camera cable of operation cylinder inside, and camera cable is positioned at the inner one end of operation cylinder and is connected with rotating camera, and camera cable is connected with supervising device near one end of operation platform.
Preferably, it also comprises that can pass interface channel enter the inner breather pipe of operation cylinder, and breather pipe is communicated with air blast near one end of operation platform, and it is opening that breather pipe is positioned at an operation inner one end.
Preferably, on operation platform, be also provided with the sounding system that can measure the seabed mud face degree of depth.
For achieving the above object and other relevant objects, the present invention also provides a kind of method of using above-mentioned underwater dry-type cutting cabin, comprises the following steps:
1) waterproof casing that is positioned at seabed in needs cutting arranges waterproof casing cement plug, and waterproof casing is blocked;
2) underwater dry-type is cut to cabin and releasable floating drum is fixed, underwater dry-type cutting cabin is floated on the surface;
3) adopt towboat that underwater dry-type is cut to the top that cabin is dragged to waterproof casing to be cut;
4) remove releasable floating drum, underwater dry-type cutting cabin is sunk, until operation Tong lower end is positioned on the mud face of seabed, it is inner that now the upper end of waterproof casing is positioned at operation cylinder;
5) operation cylinder is pressed in mud, until reach desired depth;
6) from interface channel, submersible sewage pump is put into the water of operation cylinder inside, submersible sewage pump is discharged into an operation outside by operating the inner water of cylinder by blow-off line, and after the inner water of operation cylinder discharges, then from operating, cylinder is inner to be taken out by submersible sewage pump;
7) high pressure mud flushing tube system is put into operation cylinder from interface channel inner, high pressure mud flushing tube system ejection water under high pressure breaks up the inner mud of dilution operation cylinder, forms mud, then high pressure mud flushing tube system is taken out from operation cylinder is inner; Submersible sewage pump is put into operation cylinder inner, it is outside that submersible sewage pump is discharged into operation cylinder by the inner mud of operation cylinder by blow-off line, finally submersible sewage pump taken out from operation cylinder is inner again;
8) repeat the 7th) step, until the inner mud face of operation cylinder reaches depth requirements;
9) construction tool and operating personnel enter operation cylinder inside by interface channel, and waterproof casing is cut, and the waterproof casing cutting down, construction tool are lifted to operation platform from interface channel, and it is inner that operating personnel leaves operation cylinder from interface channel;
10) operation cylinder ejected and floated from mud, until underwater dry-type is cut to cabin, being connected with the releasable floating drum being positioned on the water surface, re-using towboat and underwater dry-type is cut to cabin drag away from.
Preferably, operation cylinder is Suction anchor buckets, and operation cylinder is provided with pump interface and injecting hole, and pump interface is noted drainage equipment with suction anchor and is communicated with, and injecting hole is communicated with high pressure air system by gas injection pipeline, and gas injection pipeline is provided with controlled valve; On interface channel, be also provided with energy isolating exterior air and the inner isolation structure of operation cylinder;
Wherein, step 5) is specially: on interface channel, use the isolated extraneous air of isolation structure and operation cylinder inner air, and make controlled valve on gas injection pipeline in closed condition, and start the water that suction anchor is noted drainage equipment discharging operation cylinder inside, make operation cylinder be subject to negative pressure and sink in mud; When operation cylinder arrives desired depth, close suction anchor and note drainage equipment, stop draining, remove the isolation structure on interface channel;
Wherein, step 10) specifically comprises the following steps:
1. on interface channel, use the isolated extraneous air of isolation structure and operation cylinder inner air, and make controlled valve on gas injection pipeline in closed condition, open suction anchor and note drainage equipment, make seawater naturally flow to operation cylinder inner, until fill with operation cylinder inner space completely;
2. start suction anchor and note drainage equipment to the internal water flooding of operation cylinder, operation cylinder is ejected from mud face;
3. open controlled valve on gas injection pipeline and to gas injection in operation cylinder, make underwater dry-type cutting cabin continue to rise, when underwater dry-type cutting cabin rises to after certain altitude, underwater dry-type is cut to cabin and be connected with the releasable floating drum being positioned on the water surface, re-use towboat and underwater dry-type is cut to cabin drag away from.
Preferably, in step 4), before removing releasable floating drum, first use three towboats to pull underwater dry-type cutting cabin along three different directions, until underwater dry-type cutting cabin is accurately positioned the top of waterproof casing to be cut simultaneously.
Preferably, operation cylinder is provided with injecting hole, and injecting hole is communicated with high pressure air system by gas injection pipeline, and gas injection pipeline is provided with controlled valve; In step 4), before removing releasable floating drum, high pressure air system, by the inner gas injection of air injection pipe road direction operation cylinder, temporarily floats underwater dry-type cutting cabin, then removes releasable floating drum, and then venting is steadily sunk underwater dry-type cutting cabin gradually.
Preferably, underwater dry-type cutting cabin also comprises can enter through interface channel the camera cable of operation cylinder inside, and camera cable is positioned at the inner one end of operation cylinder and is connected with rotating camera, and camera cable is connected with supervising device near one end of operation platform; In step 6), when submersible sewage pump inner taking-up, is put into operation cylinder by rotating camera by interface channel inner from operation cylinder, by supervising device, observe after operation cylinder internal state, then by rotating camera from the inner taking-up of operation cylinder.
Preferably, underwater dry-type cutting cabin also comprises can enter through interface channel the camera cable of operation cylinder inside, and camera cable is positioned at the inner one end of operation cylinder and is connected with rotating camera, and camera cable is connected with supervising device near one end of operation platform; In step 7), when submersible sewage pump inner taking-up, is put into operation cylinder by rotating camera by interface channel inner from operation cylinder, by supervising device, observe after operation cylinder internal state, then by rotating camera from the inner taking-up of operation cylinder.
Preferably, on operation platform, be also provided with the sounding system that can measure the seabed mud face degree of depth; In step 8), whether the mud face by sounding system decision operation cylinder inside reaches depth requirements.
Preferably, underwater dry-type cutting cabin also comprises that can pass interface channel enter the inner breather pipe of operation cylinder, and breather pipe is communicated with air blast near one end of operation platform, and it is opening that breather pipe is positioned at an operation inner one end; In step 9), in workmen's work progress, it is inner that air blast is constantly blown into operation cylinder by breather pipe by extraneous air.
As mentioned above, underwater dry-type of the present invention cutting cabin and using method, have following beneficial effect:
This underwater dry-type cutting cabin and using method, utilize the self-installability energy of suction anchor, at a dry type environment that can make workmen's construction operation of the inner creation of operation cylinder, the constructions such as waterproof casing, spud leg that make to excise discarded platform are more prone to facilitate, and this cover construction equipment can be repeatedly used, engineering time is short, cost-saving, after having cut, can recover briny environment completely, the marine ecology discarded oil platform of ，Wei China that has no effect is removed effective technical support is provided.
Accompanying drawing explanation
Fig. 1 is shown as the structural representation in underwater dry-type cutting of the present invention cabin.
Fig. 2 is shown as the structural representation of the operation cylinder in the underwater dry-type cutting cabin shown in Fig. 1.
Fig. 3 is shown as the structural representation of the isolation structure in the underwater dry-type cutting cabin shown in Fig. 1.
Fig. 4 to Figure 19 is the step schematic diagram of the using method in the underwater dry-type cutting cabin shown in Fig. 1.
Element numbers explanation
1 operation platform
2 operation cylinders
31 construction passages
32 artificial channel
4 interrupters
41 blind hole flanges
42 hinged bolts
43 annular lip
44 O RunddichtringOs
51 pump interfaces
52 suction anchors are noted drainage equipment
6 injecting holes
71 blow-off lines
72 submersible sewage pumps
8 high pressure mud flushing tube systems
91 camera cables
92 rotating camera
101 breather pipes
102 air blasts
11 waterproof casings
12 waterproof casing cement plugs
13 releasable floating drums
14 towboats
The specific embodiment
By particular specific embodiment explanation embodiments of the present invention, person skilled in the art scholar can understand other advantages of the present invention and effect easily by the disclosed content of this description below.
Refer to Fig. 1 to Figure 19.Notice, appended graphic the illustrated structure of this description, ratio, size etc., equal contents in order to coordinate description to disclose only, for person skilled in the art scholar, understand and read, not in order to limit the enforceable qualifications of the present invention, therefore the technical essential meaning of tool not, the adjustment of the modification of any structure, the change of proportionate relationship or size, not affecting under the effect that the present invention can produce and the object that can reach, all should still drop on disclosed technology contents and obtain in the scope that can contain.Simultaneously, in this description, quote as " on ", the term of D score, " left side ", " right side ", " centre " and " " etc., also only for ease of understanding of narrating, but not in order to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under without essence change technology contents, when being also considered as the enforceable category of the present invention.
As shown in Figure 1, Figure 2, shown in Fig. 9 and Figure 11, the invention provides a kind of underwater dry-type cutting cabin, it comprises the operation cylinder 2 that is positioned at operation platform waterborne 1 and is positioned at upper end closed lower ending opening under water, operation platform 1 is provided with a plurality of interface channels, and interface channel is connected extraneous air and operation cylinder 2 inside; Cutting cabin also comprises can enter through interface channel the blow-off line 71 of operation cylinder 2 inside, and one end that blow-off line 71 is positioned at operation cylinder 2 inside is communicated with submersible sewage pump 72, and blow-off line 71 is communicated with extraneous air near one end of operation platform 1; Cutting cabin also comprises can pass the high pressure mud flushing tube system 8 that interface channel enter operation cylinder 2 inside, and high pressure mud flushing tube system 8 is communicated with high pressure water system near one end of operation platform 1, and high pressure water system is controlled high pressure mud flushing tube system 8 ejection water under high pressures.
This underwater dry-type cutting cabin, operation cylinder 2 is squeezed in bottom silt, waterproof casing to be cut 11 is covered on to operation cylinder 2 inside, after the water of operation cylinder 2 inside being discharged by submersible sewage pump 72, re-use high pressure mud flushing tube system 8 and break up near the mud of waterproof casing 11, and use submersible sewage pump 72 that mud is discharged, until the mud face degree of depth of operation cylinder 2 inside reaches split requirement, and then send someone to enter the work that waterproof casing 11 is cut in operation cylinder 2 inside.Workmen carries out cutting operation under anhydrous dry environment like this, easy more than underwater operation of the prior art, has improved operating efficiency, has reduced job costs.And owing to covering on waterproof casing 11 with operation cylinder 2, while making high pressure mud flushing tube system 8, submersible sewage pump 72 carry out spoil disposal operation, only need to get rid of the mud of operation cylinder 2 inside, greatly reduced sludge volume, improved operating efficiency, reduced job costs.
On interface channel, be also provided with the isolation structure 4 of energy isolating exterior air and operation cylinder 2 inside; Operation cylinder 2 is Suction anchor buckets, operation cylinder 2 is provided with pump interface 51 and injecting hole 6, pump interface 51 is noted drainage equipment 52 with suction anchor and is communicated with, injecting hole 6 is communicated with high pressure air system by gas injection pipeline, gas injection pipeline is provided with controlled valve, the in the situation that of not gas injection, controlled valve is always in closed condition.
Operation cylinder 2 is Suction anchor buckets, and suction anchor is a kind of shallow foundation of the non-property squeezed into, and Suction anchor buckets is inverted bucket seemingly, top closure, and lower end is opened wide, so sometimes also referred to as bucket base or bucket foundation.The pile sinking principle of suction anchor is: Suction anchor buckets submerged, and utilize its deadweight to produce the initial penetration into mud of certain depth of penetration, form a closed system; Use suction anchor to note the water in drainage equipment 52 suction Suction anchor buckets, make to produce lower than outside hydraulic pressure in Suction anchor buckets, utilize the inside and outside Negative Pressure Difference in cylinder top that Suction anchor buckets is pressed in soil.The stake principle that rises of suction anchor is: use suction anchor to note drainage equipment 52 to water filling in Suction anchor buckets, utilize the inside and outside positive differential pressure in cylinder top that Suction anchor buckets is ejected to mud face.Between ocean bottom soil and barrel, frictional resistance can stop seawater to enter Suction anchor buckets inside, therefore Suction anchor buckets and ocean bottom soil can form an independently environment, by draining and clear mud, waterproof casing to be cut 11 is in the space of dry type, operating personnel can carry out cutting under dry environment, after having cut, can recover briny environment completely, marine ecology is had no effect.
The quantity of interface channel is three, and wherein two is that 31, one, passage of construction is artificial channel 32, and artificial channel 32 is provided with vertical cat ladder, and workmen can enter operation cylinder 2 inside by cat ladder.Operation platform 1 is mainly to provide the place of workmen and place tool equipment etc., construction passage 31 is construction tools as the passage of turnover operation cylinder 2 inside such as steel tube cutting machine, winch, chain block, also makes workmen can rise to safely rapidly operation platform 1 by enough winches simultaneously under the emergency situation such as leak.It is the horn mouth that sectional area increases successively from top to bottom that construction passage 31 is positioned at the inner port of operation cylinder, circular-arc horn mouth is made in construction passage 31 lower ends, so that construction tool can successfully be pulled on and not be stuck from construction passage 31 when reclaiming, and can make personnel enter fast construction passage 31 under the help of external force time and preserve from.Construction passage 31 and artificial channel 32 are passages of turnover operation cylinder 2 inside, are also the supports of operation platform 1 simultaneously, need certain intensity.
As shown in Figure 11, Figure 14, it also comprises can enter through interface channel the camera cable 91 of operation cylinder 2 inside, one end that camera cable 91 is positioned at operation cylinder 2 inside is connected with rotating camera 92, and camera cable 91 is connected with supervising device near one end of operation platform 1.Rotating camera 92 can be rotated by 360 degree, for observing the situation in work progress operation cylinder 2 inside.
As shown in figure 15, it also comprises can pass the breather pipe 101 that interface channel enter operation cylinder 2 inside, and breather pipe 101 is communicated with air blast 102 near one end of operation platform 1, and one end that breather pipe 101 is positioned at operation cylinder 2 inside is opening.Air blast 102 is placed on operation platform 1, by breather pipe 101, to operation cylinder 2 is inner, blows, and makes operation cylinder 2 inner forced ventilatings, guarantees the workmen's of operation cylinder 2 inside work safety.
As shown in Figure 3, interrupter 4 comprises the blind hole flange 41 that can cover in interface channel upper port, and blind hole flange 41 is connected by hinged bolt 42 with interface channel upper port.Interface channel upper port is provided with radially outwardly annular lip 43, and hinged bolt 42 is fixed in annular lip 43, between annular lip 43 and the opposite face of blind hole flange 41, is provided with O RunddichtringO 44.When needs are during by extraneous air and operation cylinder 2 internal insulation, blind hole flange 41 is placed in interface channel upper port, and uses hinged bolt 42 fixing; When needs are during by extraneous air and operation cylinder 2 internal communication, hinged bolt 42 is removed, and blind hole flange 41 is removed.Wherein, O RunddichtringO 44 has increased the sealing between annular lip 43 and blind hole flange 41.
On operation platform 1, be also provided with the sounding system that can measure the seabed mud face degree of depth.Sounding system adopts sonar depth measurement, first measures the mud face degree of depth outside operation cylinder 2, after spoil disposal completes, then from interface channel, measures the degree of depth of inner mud face, and the difference of its outside mud face and inner mud face is the dell degree of depth, is typically 3～5 meters.
A method of using above-mentioned underwater dry-type cutting cabin, comprises the following steps:
1) waterproof casing that is positioned at seabed 11 in needs cutting arranges waterproof casing cement plug 12, and waterproof casing 11 is blocked; Waterproof casing cement plug 12 is mainly comprised of plugging device and cement mortar, prevents the interior remaining oil gas polluted-water of waterproof casing 11, the danger of detonation occurs, as shown in Figure 4 under water in the time of also preventing from cutting;
2) underwater dry-type is cut to cabin and releasable floating drum 13 fixing, underwater dry-type cutting cabin is floated on the surface; Releasable floating drum and underwater dry-type cutting cabin adopt disengageable hydraulic connecting form, have increased floating stability of dragging, as shown in Figure 5;
3) adopt towboat 14 that underwater dry-type is cut to the top that cabin is dragged to waterproof casing to be cut 11, as shown in Figure 6;
4) first use three towboats 14 to pull underwater dry-type cutting cabin along three different directions, until underwater dry-type cutting cabin is accurately positioned the top of waterproof casing to be cut 11, wherein between three towboats 14, Jun Cheng120Du angle positions simultaneously; High pressure air system can be by the 2 inner gas injections of air injection pipe road direction operation cylinder, underwater dry-type cutting cabin is temporarily floated, remove again releasable floating drum 13, then venting is steadily sunk underwater dry-type cutting cabin gradually, the lower end that underwater dry-type cutting cabin sinks down into operation cylinder 2 is positioned on the mud face of seabed, and now waterproof casing 11 upper end is positioned at operation cylinder 2 inside; Before removing releasable floating drum 13, high pressure air system, to the 2 inner gas injections of operation cylinder, can make underwater dry-type cutting cabin can not decline rapidly like this, can sink down into reposefully seabed mud face, as shown in Fig. 7 to Fig. 8;
5) operation cylinder 2 is pressed in mud, until reach desired depth; Be specially, on interface channel, use the isolated extraneous air of isolation structure 4 and operation cylinder inner air, and make controlled valve on gas injection pipeline in closed condition, and start the water that suction anchor is noted drainage equipment 52 discharging operation cylinder 2 inside, make operation cylinder 2 be subject to negative pressure and sink in mud; When operation cylinder 2 arrives desired depth, close suction anchor and note drainage equipment 52, stop draining, as shown in Figure 9;
6) remove the isolation structure 4 on interface channel, from interface channel, submersible sewage pump 72 is put into the water of operation cylinder 2 inside, submersible sewage pump 72 is discharged into operation cylinder 2 outsides by the water of operation cylinder 2 inside by blow-off line 71, after the water discharge of operation cylinder 2 inside, then submersible sewage pump 72 is taken out from operation cylinder 2 is inner; When by submersible sewage pump 72 from operation cylinder 2 is inner take out, rotating camera 92 is put into operation cylinder 2 inside by interface channel, by supervising device, observe after operation cylinder 2 internal states, then rotating camera 92 is taken out from operation cylinder 2 is inner, as shown in Figure 10 to Figure 11;
7) high pressure mud flushing tube system is put into operation cylinder 2 inside from interface channel, high pressure mud flushing tube system ejection water under high pressure breaks up the mud of dilution operation cylinder 2 inside, forms mud, then high pressure mud flushing tube system is taken out from operation cylinder 2 is inner; Submersible sewage pump 72 is put into operation cylinder 2 inside, submersible sewage pump 72 is discharged into operation cylinder 2 outsides by the mud of operation cylinder 2 inside by blow-off line 71 again, finally submersible sewage pump 72 is taken out from operation cylinder 2 is inner; When by submersible sewage pump 72 from operation cylinder 2 is inner take out, rotating camera 92 is put into operation cylinder 2 inside by interface channel, by supervising device, observe after operation cylinder 2 internal states, again rotating camera 92 is taken out from operation cylinder 2 is inner, rotating camera 92 is for examining the situation of operation cylinder 2 inside, the earth pressurize situation of operation cylinder 2 barrels, to guarantee that workmen enters the safety behind operation cylinder 2 inside, as shown in Figure 12 to Figure 14;
8) repeat the 7th) step, until the mud face of operation cylinder 2 inside reaches depth requirements; Wherein, can measure by sounding system the difference of operation cylinder 2 outsides and inner mud face, thereby whether the mud face of decision operation cylinder 2 inside reaches depth requirements;
9) construction tool and operating personnel enter operation cylinder 2 inside by interface channel, waterproof casing 11 is cut, the waterproof casing cutting down 11, construction tool are hung out to operation platform 1 with winch from interface channel, and workmen leaves operation cylinder 2 inside from interface channel; In workmen's work progress, air blast 102 is constantly blown into operation cylinder 2 inside by breather pipe 101 by extraneous air, as shown in figure 15;
10) operation cylinder 2 ejected and floated from mud, until underwater dry-type is cut to cabin, being connected with the releasable floating drum 13 being positioned on the water surface, re-using towboat 14 and underwater dry-type is cut to cabin drag away from, specifically comprising the following steps,
1. on interface channel, use the isolated extraneous air of isolation structure 4 and operation cylinder inner air, and make controlled valve on gas injection pipeline in closed condition, open suction anchor and note drainage equipment 52, make seawater naturally flow to operation cylinder 2 inside, until fill with operation cylinder 2 inner spaces completely, as shown in figure 16;
2. start suction anchor and note drainage equipment 52 to 2 internal water floodings of operation cylinder, operation cylinder 2 is ejected from mud face, as shown in figure 17;
3. open controlled valve on gas injection pipeline and to the 2 interior gas injections of operation cylinder, make underwater dry-type cutting cabin continue to rise, when underwater dry-type cutting cabin rises to after certain altitude, underwater dry-type is cut to cabin to be connected with the releasable floating drum 13 being positioned on the water surface, re-use towboat 14 and underwater dry-type is cut to cabin drag away from, as shown in figure 18;
11) the left dell of construction operation is filled up by bottom silt gradually under the effect of seawater, as shown in figure 19.
In sum, underwater dry-type of the present invention cutting cabin and using method, utilize the self-installability energy of suction anchor, at a dry type environment that can make workmen's construction operation of the inner creation of operation cylinder, the constructions such as waterproof casing, spud leg that make to excise discarded platform are more prone to facilitate, and this cover construction equipment can be repeatedly used, engineering time is short, cost-saving, after having cut, can recover briny environment completely, the marine ecology discarded oil platform of ，Wei China that has no effect is removed effective technical support is provided.So the present invention has effectively overcome various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all can, under spirit of the present invention and category, modify or change above-described embodiment.Therefore, such as in affiliated technical field, have and conventionally know that the knowledgeable, not departing from all equivalence modifications that complete under disclosed spirit and technological thought or changing, must be contained by claim of the present invention.
Claims (16)
1. a underwater dry-type cuts cabin, it is characterized in that: it comprises the operation cylinder that is positioned at operation platform waterborne and is positioned at upper end closed lower ending opening under water, described operation platform is provided with a plurality of interface channels, and described interface channel is connected extraneous air and described operation cylinder inside; Described cutting cabin also comprises and can enter the inner blow-off line of described operation cylinder through described interface channel, described blow-off line is positioned at the inner one end of described operation cylinder and is communicated with submersible sewage pump, and described blow-off line is communicated with extraneous air near one end of described operation platform; Described cutting cabin also comprises and can enter the inner high pressure mud flushing tube system of described operation cylinder through described interface channel, described high pressure mud flushing tube system is communicated with high pressure water system near one end of described operation platform, and described high pressure water system is controlled described high pressure mud flushing tube system ejection water under high pressure.
2. underwater dry-type according to claim 1 cuts cabin, it is characterized in that: described operation cylinder is Suction anchor buckets, described operation cylinder is provided with pump interface and injecting hole, described pump interface is noted drainage equipment with suction anchor and is communicated with, described injecting hole is communicated with high pressure air system by gas injection pipeline, and described gas injection pipeline is provided with controlled valve; On described interface channel, being also provided with can isolating exterior air and the inner isolation structure of operation cylinder.
3. underwater dry-type cutting according to claim 2 cabin, is characterized in that: described interrupter comprises the blind hole flange that can cover in described interface channel upper port, and described blind hole flange is connected by hinged bolt with described interface channel upper port.
4. underwater dry-type cutting according to claim 1 cabin, is characterized in that: the quantity of described interface channel is three, and wherein two is construction passage, and one is artificial channel, and described artificial channel is provided with vertical cat ladder.
5. underwater dry-type cutting according to claim 4 cabin, is characterized in that: it is the horn mouth that sectional area increases successively from top to bottom that described construction passage is positioned at the inner port of described operation cylinder.
6. underwater dry-type according to claim 1 cuts cabin, it is characterized in that: it also comprises and can enter the inner camera cable of described operation cylinder through described interface channel, described camera cable is positioned at the inner one end of described operation cylinder and is connected with rotating camera, and described camera cable is connected with supervising device near one end of described operation platform.
7. underwater dry-type according to claim 1 cuts cabin, it is characterized in that: it also comprises and can enter the inner breather pipe of described operation cylinder through described interface channel, described breather pipe is communicated with air blast near one end of described operation platform, and it is opening that described breather pipe is positioned at the inner one end of described operation cylinder.
8. underwater dry-type cutting according to claim 1 cabin, is characterized in that: on described operation platform, be also provided with the sounding system that can measure the seabed mud face degree of depth.
9. right to use requires the method in the underwater dry-type cutting cabin described in 1, it is characterized in that comprising the following steps:
1) waterproof casing that is positioned at seabed in needs cutting arranges waterproof casing cement plug, and described waterproof casing is blocked;
2) underwater dry-type is cut to cabin and releasable floating drum is fixed, described underwater dry-type cutting cabin is floated on the surface;
3) adopt towboat that underwater dry-type is cut to the top that cabin is dragged to waterproof casing to be cut;
4) remove releasable floating drum, underwater dry-type cutting cabin is sunk, until operation Tong lower end is positioned on the mud face of seabed, it is inner that now the upper end of waterproof casing is positioned at operation cylinder;
5) described operation cylinder is pressed in mud, until reach desired depth;
6) from interface channel, submersible sewage pump is put into the water of operation cylinder inside, described submersible sewage pump is discharged into an operation outside by operating the inner water of cylinder by blow-off line, and after the inner water of operation cylinder discharges, then from operating, cylinder is inner to be taken out by described submersible sewage pump;
7) high pressure mud flushing tube system is put into operation cylinder from interface channel inner, described high pressure mud flushing tube system ejection water under high pressure breaks up the inner mud of dilution operation cylinder, forms mud, then described high pressure mud flushing tube system is taken out from operation cylinder is inner; Submersible sewage pump is put into operation cylinder inner, it is outside that described submersible sewage pump is discharged into operation cylinder by the inner mud of operation cylinder by blow-off line, finally submersible sewage pump taken out from operation cylinder is inner again;
8) repeat the 7th) step, until the inner mud face of described operation cylinder reaches depth requirements;
9) construction tool and operating personnel enter operation cylinder inside by interface channel, waterproof casing is cut, the waterproof casing cutting down, construction tool are lifted to described operation platform from interface channel, and it is inner that operating personnel leaves operation cylinder from interface channel;
10) described operation cylinder ejected and floated from mud, until underwater dry-type is cut to cabin, being connected with the releasable floating drum being positioned on the water surface, re-using towboat and underwater dry-type is cut to cabin drag away from.
10. use underwater dry-type according to claim 9 cuts the method in cabin, it is characterized in that: described operation cylinder is Suction anchor buckets, described operation cylinder is provided with pump interface and injecting hole, described pump interface is noted drainage equipment with suction anchor and is communicated with, described injecting hole is communicated with high pressure air system by gas injection pipeline, and described gas injection pipeline is provided with controlled valve; On described interface channel, be also provided with energy isolating exterior air and the inner isolation structure of operation cylinder;
Wherein, step 5) is specially, and uses the isolated extraneous air of isolation structure and an operation cylinder inner air on described interface channel, and makes controlled valve on gas injection pipeline in closed condition, start suction anchor and note the water of drainage equipment discharging operation cylinder inside, make operation cylinder be subject to negative pressure and sink in mud; When operation cylinder arrives desired depth, close suction anchor and note drainage equipment, stop draining, remove the isolation structure on described interface channel;
Wherein, step 10) specifically comprises the following steps,
1. on interface channel, use the isolated extraneous air of isolation structure and operation cylinder inner air, and make controlled valve on gas injection pipeline in closed condition, open suction anchor and note drainage equipment, make seawater naturally flow to operation cylinder inner, until fill with operation cylinder inner space completely;
2. start suction anchor and note drainage equipment to the internal water flooding of operation cylinder, operation cylinder is ejected from mud face;
3. open controlled valve on gas injection pipeline and to gas injection in operation cylinder, make underwater dry-type cutting cabin continue to rise, when underwater dry-type cutting cabin rises to after certain altitude, underwater dry-type is cut to cabin and be connected with the releasable floating drum being positioned on the water surface, re-use towboat and underwater dry-type is cut to cabin drag away from.
The method in 11. use underwater dry-type cutting according to claim 9 cabins, it is characterized in that: in step 4), before removing releasable floating drum, first use three towboats to pull underwater dry-type cutting cabin along three different directions, until underwater dry-type cutting cabin is accurately positioned the top of waterproof casing to be cut simultaneously.
The method in 12. use underwater dry-type cutting according to claim 9 cabins, is characterized in that: described operation cylinder is provided with injecting hole, and described injecting hole is communicated with high pressure air system by gas injection pipeline, and described gas injection pipeline is provided with controlled valve; In step 4), before removing described releasable floating drum, described high pressure air system, by the inner gas injection of air injection pipe road direction operation cylinder, temporarily floats underwater dry-type cutting cabin, remove described releasable floating drum, then venting is steadily sunk underwater dry-type cutting cabin gradually again.
The method in 13. use underwater dry-type cutting according to claim 9 cabins, it is characterized in that: described underwater dry-type cutting cabin also comprises and can enter the inner camera cable of described operation cylinder through described interface channel, described camera cable is positioned at the inner one end of described operation cylinder and is connected with rotating camera, and described camera cable is connected with supervising device near one end of described operation platform; In step 6), when by described submersible sewage pump from described operation cylinder is inner take out, described rotating camera is put into described operation cylinder by described interface channel inner, by supervising device, observe after described operation cylinder internal state, more described rotating camera is taken out from described operation cylinder inside.
The method in 14. use underwater dry-type cutting according to claim 9 cabins, it is characterized in that: described underwater dry-type cutting cabin also comprises and can enter the inner camera cable of described operation cylinder through described interface channel, described camera cable is positioned at the inner one end of described operation cylinder and is connected with rotating camera, and described camera cable is connected with supervising device near one end of described operation platform; In step 7), when by described submersible sewage pump from described operation cylinder is inner take out, described rotating camera is put into described operation cylinder by described interface channel inner, by supervising device, observe after described operation cylinder internal state, more described rotating camera is taken out from described operation cylinder inside.
The method in 15. use underwater dry-type cutting according to claim 9 cabins, is characterized in that: on described operation platform, be also provided with the sounding system that can measure the seabed mud face degree of depth; In step 8), whether the mud face by sounding system decision operation cylinder inside reaches depth requirements.
The method in 16. use underwater dry-type cutting according to claim 9 cabins, it is characterized in that: described underwater dry-type cutting cabin also comprises and can enter the inner breather pipe of described operation cylinder through described interface channel, described breather pipe is communicated with air blast near one end of described operation platform, and it is opening that described breather pipe is positioned at the inner one end of described operation cylinder; In step 9), in workmen's work progress, it is inner that described air blast is constantly blown into operation cylinder by described breather pipe by extraneous air.
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| CN105019418A (en) * | 2015-07-29 | 2015-11-04 | 深圳海油工程水下技术有限公司 | Dry cabin for maintaining underwater joint of jacket and mounting method of dry cabin |
| CN107433354A (en) * | 2017-09-19 | 2017-12-05 | 中国核动力研究设计院 | A kind of high radioactivity pipeline imderwater cutting device |
| CN107905238A (en) * | 2017-10-19 | 2018-04-13 | 太原理工大学 | A kind of soil plug pullout type suction anchor foundation and its construction method |
| CN110805017A (en) * | 2020-01-08 | 2020-02-18 | 森诺科技有限公司 | Movable offshore self-installation dry type operation environment construction device |
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| CN115180101A (en) * | 2021-04-07 | 2022-10-14 | 浙江华东建设工程有限公司 | Underwater local dry land maintenance method and system |
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| CN110805016A (en) * | 2020-01-08 | 2020-02-18 | 森诺科技有限公司 | Movable offshore self-installation dry type operation environment construction process |
| CN115180101A (en) * | 2021-04-07 | 2022-10-14 | 浙江华东建设工程有限公司 | Underwater local dry land maintenance method and system |
| CN118363028A (en) * | 2024-06-17 | 2024-07-19 | 海底鹰深海科技股份有限公司 | Sonar and method for assembling sonar |
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