CN107191138A - Deepwater composite conduit running tubular column and underwater installation method thereof - Google Patents
Deepwater composite conduit running tubular column and underwater installation method thereof Download PDFInfo
- Publication number
- CN107191138A CN107191138A CN201710513380.2A CN201710513380A CN107191138A CN 107191138 A CN107191138 A CN 107191138A CN 201710513380 A CN201710513380 A CN 201710513380A CN 107191138 A CN107191138 A CN 107191138A
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- Prior art keywords
- composite conduit
- deep water
- string
- conduit running
- bucket foundation
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- 239000002131 composite material Substances 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000009434 installation Methods 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 96
- 238000005553 drilling Methods 0.000 claims abstract description 30
- 230000008569 process Effects 0.000 claims abstract description 15
- 239000004020 conductor Substances 0.000 claims description 54
- 230000007246 mechanism Effects 0.000 claims description 27
- 239000000725 suspension Substances 0.000 claims description 14
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims 1
- 238000005086 pumping Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 13
- 239000000203 mixture Substances 0.000 description 10
- 238000010276 construction Methods 0.000 description 9
- 238000011084 recovery Methods 0.000 description 7
- 239000002689 soil Substances 0.000 description 7
- 208000032826 Ring chromosome 3 syndrome Diseases 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000002169 extracardiac Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
- E21B7/185—Drilling by liquid or gas jets, with or without entrained pellets underwater
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a deepwater composite conduit running tubular column and an underwater installation method thereof, wherein the method comprises the following steps: after the deepwater composite conduit running pipe column is connected with a drilling platform, a drain valve is opened; the deepwater composite conduit running pipe column is sent to the seabed, and when the lower end of the conduit pipe column body contacts the seabed mud surface, the jet running process is started; when a preset hydraulic jetting parameter is maintained to carry out a jetting running-in process, the hanging weight of a big hook is gradually reduced so as to apply part of the load of the pipe column on the cylindrical foundation; meanwhile, the power for pumping water in the cylindrical foundation is increased, and the cylindrical foundation is pressed in while the deepwater composite conduit is lowered into the tubular column for jetting and lowering; and when the cylindrical foundation is completely put in, closing the drainage valve to finish the putting in of the deepwater composite conduit putting in pipe column. The deepwater composite conduit running string and the underwater installation method thereof can save the waiting time for recovering the cementing stress of the deepwater composite conduit running string and shorten the running length.
Description
Technical field
The present invention relates to deep water hydrocarbon drilling technology field, more particularly to a kind of deep water composite conduit running string and its water
Lower installation method.
Background technology
In ocean engineering oil/gas drilling industry, injection tripping in microcatheter technology is when implementing due to that can reach that saving drilling well makees
The time of industry, and the effect of the risk and cost of reduction drilling well can be reached, therefore as a wide variety of technology.Further
, a kind of deep water injection catheter suction technology is specially devised for the oil-gas field development of deepwater regions, it is in jet drilling
The new technology grown up on the basis of well and MTR application.The technology is when implementing by drill bit and MTR by leading
Pipe tripping in specialist tools constitute injection running string string, abbreviation drill string together with conduit.Wherein, the main function of drill bit is broken
Soil before conduit pipe shoe, is subsequently pumped into mud by drill string again and the annular space of landwaste from pipe inner wall and drill string is carried out
Sea bed is directly discharged into behind shaft bottom.During tripping in, conduit is bored under the Action of Gravity Field of its deadweight and whole drill string etc. with drill bit
The neck gone out sinks and extrudes surrounding formation until projected depth now.After tripping in projected depth, by certain " during wait
Between ", cementing stress is established between conduit and stratum clay, and increase with the time and reinforce, so that it is guaranteed that conduit " being hanged "
Without sinking.
The day of deepwater drilling platform takes high, and therefore mean height, optimizes offshore construction work up to 50~2,000,000 dollars/day
Skill, saving drilling platforms holding time are the targets that deepwater drilling is pursued all the time.Under existing process technical conditions, by conduit tubing string
After whole tripping in, " stand-by period " of above-mentioned cementing stress recovery is about 6~12 hours." the wait of the cementing stress recovery
Time " so that during the tripping in of whole deep water conduit, tripping in inefficiency, occupancy rig floor time are long, and conduit tripping in cost is high
It is high.
The content of the invention
Installation method, can save depth it is an object of the invention to provide a kind of deep water composite conduit running string and its under water
" stand-by period " of the cementing stress recovery of water conduit composite conduit running string, shorten tripping in length, when substantially increasing drilling well
Effect, has saved construction technology cost.
The above-mentioned purpose of the present invention can be realized using following technical proposal:
A kind of deep water composite conduit running string, including:Conductor string body and bucket foundation, wherein,
The conductor string body is formed by connecting by multiple conduits by conduit box cupling, and the conductor string body has relative
Top and bottom, the upper end of the conductor string body is well head head, and the lower end of the conductor string body is provided with guide shoe;
The bucket foundation generally hollow cylinder, the cylinder has relative top and bottom, and the bottom is
Opening end, the top is equipped with the conductor string body formation blind end;
Be additionally provided between the conductor string body and the bucket foundation for limit the conductor string body with it is described
The axial limiting mechanism of bucket foundation axial movement;
Draining valve is additionally provided with the cylinder, the draining valve is connected with the inner barrel, can be by the cylinder
Internal water discharge;
Suspension is additionally provided with the cylinder.
In one preferred embodiment, the bucket foundation top and the position of the conductor string body fits are set
There is catheter directed mechanism.
In one preferred embodiment, the catheter directed mechanism is included in hollow inverted cone section, the rounding
Section is bored to be located at more than the top.
In one preferred embodiment, the catheter directed mechanism also includes mutually passing through with the hollow inverted cone section
Logical hollow cylindrical section.
In one preferred embodiment, the axial limiting mechanism is jump ring retaining mechanism, and it includes:
The upper mounting boss and lower installation base formed on the outer wall of the conductor string body;
In the upper holding section and lower holding section of the hollow cylindrical section formation, wherein, the lower holding section with it is described under
Installation base is fastened, and jump ring is provided between the upper mounting boss and the upper holding section.
In one preferred embodiment, circumferentially equably it is provided with the hollow cylindrical section multiple spacing
Spacer pin is provided with hole, the spacing hole.
In one preferred embodiment, the Suspension is multiple, and multiple Suspensions are evenly distributed on described
Top.
In one preferred embodiment, the number of the draining valve is multiple, and multiple draining valves are uniformly distributed
On the top.
In one preferred embodiment, bucket foundation bottom plate, the cylinder are provided with the inside of the cylinder top
Triangle rib is provided with the inside of section to the cylinder top, the inside sidewalls of the cylinder are provided with barrel reinforcement.
A kind of installation method under water of deep water composite conduit running string, including:
After deep water composite conduit running string is connected with drilling platforms, draining valve is opened;
The deep water composite conduit running string is sent into seabed, when the lower end in contact seabed mud face of conductor string body,
Start injection tripping in process;
When maintaining predetermined water-jet parameter progress injection tripping in process, progressively reduce hook weigh, by part tubing string
Load is put on bucket foundation;Increase the power drawn water in the bucket foundation simultaneously, realize in the deep water composite conduit
Running string completes the press-in of the bucket foundation while spraying tripping in;
After the bucket foundation complete tripping in, the draining valve is closed, the deep water composite conduit running string is completed
Tripping in.
In one preferred embodiment, in addition to:During 2 meters to 3 meters of the default depth of setting of distance, water-jet is reduced
Parameter.
In one preferred embodiment, described is by boring by deep water composite conduit running string feeding seabed
The drilling rod feeding of well platform, accordingly, after the tripping in of the deep water composite conduit running string is completed, in addition to:Free institute
State drilling rod.
The features and advantages of the invention are:By by bucket foundation with deep water conduit is ingenious combines to form deep water composite conduit
Running string, it is fashionable under, under the supporting role of bucket foundation, power can be provided a supporting role without picture for whole tubing string
It is fashionable under traditional deep water conduit that longer cementing stress recovery " stand-by period ", and the support provided in bucket foundation are provided
Under active force, whole tubing string can greatly shorten the depth of tripping in, that is to say, that under deep water composite conduit provided herein
Entering tubing string can save " stand-by period " of the cementing stress recovery of deep water conduit composite conduit running string, shorten tripping in length,
Drilling well timeliness is substantially increased, construction technology cost has been saved.
With reference to explanation hereinafter and accompanying drawing, the particular implementation of the application is disclose in detail, the original of the application is specified
Reason can be in adopted mode.It should be understood that presently filed embodiment is not so limited in scope.In appended power
In the range of the spirit and terms that profit is required, presently filed embodiment includes many changes, modifications and equivalent.
The feature for describing and/or showing for a kind of embodiment can be in same or similar mode one or more
Used in individual other embodiment, it is combined with feature in other embodiment, or substitute the feature in other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when being used herein, but simultaneously
It is not excluded for the presence or additional of one or more further features, one integral piece, step or component.
Brief description of the drawings
Fig. 1 is a kind of structural representation of deep water composite conduit running string in the application embodiment;
Fig. 2 is a kind of structural representation of the bucket foundation in deep water composite conduit running string in the application embodiment
Figure;
Fig. 3 is that a kind of part of the axial limiting mechanism in deep water composite conduit running string in the application embodiment is put
Big figure;
Fig. 4 is a kind of step flow of the installation method under water of water composite conduit running string in the application embodiment
Figure.
Description of reference numerals:
Conductor string body -1;Upper mounting boss -10;Lower installation base -11;Well head head -12;Conduit box cupling -14;Conduit
Footwear -15;Catheter directed mechanism -2;Jump ring -3;Upper holding section -21;Lower holding section -22;Spacing hole -23;Spacer pin -24;Suspention
Part -4;Draining valve -5;Bucket foundation -6;Bucket foundation bottom plate -61;Triangle rib -62;Barrel reinforcement -63.
Embodiment
Below in conjunction with the drawings and specific embodiments, technical scheme is elaborated, it should be understood that these
Embodiment is only illustrative of the invention and is not intended to limit the scope of the invention, after the present invention has been read, this area skill
Modification of the art personnel to the various equivalent form of values of the present invention is each fallen within the application appended claims limited range.
It should be noted that when element is referred to as " being arranged at " another element, it can be directly on another element
Or can also have element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " level ", " on ",
" under ", "left", "right" and similar statement for illustrative purposes only, it is unique embodiment to be not offered as.
Unless otherwise defined, all of technologies and scientific terms used here by the article and the technical field of the application is belonged to
The implication that technical staff is generally understood that is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.Term as used herein "and/or" includes one or more
The arbitrary and all combination of related Listed Items.
Deep water conduit depth of setting is generally 60~120 meters, and the depth depends primarily on the support of deep-water subsea shallow soft soil
The ability of conduit and subsequent casings post.The main function of deep water conduit includes:
1) support well head and preventer weight, and marine riser weight is supported in emergency, keep the stability of equipment;
2) before surface pipe well cementation, the weight of surface pipe is supported;
3) drilling fluid path is set up, prevents soft sea surface to be washed, it is ensured that the stability of ground;
4) conduit or surface pipe are lowered into harder stratum, to ensure that the stratum at pipe shoe has enough strong
Degree so that bottom well section is bored can use safe drilling fluid density when meeting abnormal pressure;
5) bending load produced in operation process is born;
6) control shallow gas, shallow seated groundwater.
Bucket foundation was proposed in 1960s earliest, just started the beginning of the eighties to be realized in engineering, subsequently
Because the engineering technology superiority of its economy, validity, reliability and structure is developed rapidly after this.At present, cylinder
Type basis has been a kind of anchoring, the mooring foundation being most widely used, and is widely used in jacket platform basis, semisubmersible platform
In basis, deep water subsea production system basis etc..
In structure, bucket foundation is generally top closure, the steel knot for being inverted tubular or inversion cup-shaped of open at its lower end
Structure.Classify according to construction installation method, the marine injection construction installation method of bucket foundation mainly has plunging and inhalation two
The form of kind.
Wherein, plunging work progress on bucket foundation mainly by certain loading of pressing in is applied, with bucket foundation
Interior water is gradually discharged and whole bucket foundation side wall is embedded in submarine soil, is then closed after discharge outlet is stood and is completed construction
Process.
Inhalation construction is to utilize principle of negative pressure, and bucket foundation is hung first to seabed and makes soil body lower edge embedding by deadweight
Enter in the soil body;After closed state is formed in cylinder, by the immersible pump being arranged on the cover of top to extracardiac pumping, and make with for the moment
The interior water extracted out exceedes the water penetrated into from bottom in cylinder, causes the reduction of bucket foundation internal pressure.When by bucket foundation
Inside and outside pressure difference formation press-in active force act on after cover, and the pressure vertically downward exceed seabed soil to cylinder
During type foundation side wall resistance, bucket foundation is i.e. by constantly press-in submarine soil.Contacted with seabed mud face when cover ground and
Bucket foundation injection end-of-job when making the vertical direction reach mechanical balance.
The present invention provides a kind of deep water composite conduit running string and its water for being combined bucket foundation with deep water conduit
Lower installation method, can be saved " stand-by period " of the cementing stress recovery of deep water conduit composite conduit running string, shorten tripping in
Length, substantially increases drilling well timeliness, has saved construction technology cost.
Refer to and a kind of deep water composite conduit running string is provided in Fig. 1 and Fig. 2, the application embodiment, it can be wrapped
Include:Conductor string body 1 and bucket foundation 6, wherein, the conductor string body 1 connected by multiple conduits by conduit box cupling 14 and
Into the conductor string body 1 has relative top and bottom, and the upper end of the conductor string body 1 is well head first 12, described to lead
The lower end of tubular column main body 1 is provided with guide shoe 15;The bucket foundation 6 generally hollow cylinder, the cylinder has relative
Top and bottom, the bottom is opening end, and the top is equipped with the conductor string body 1 formation blind end;It is described to lead
It is additionally provided between tubular column main body 1 and the bucket foundation 6 for limiting the conductor string body 1 and the axle of bucket foundation 6
To mobile axial limiting mechanism;Draining valve 5 is additionally provided with the cylinder, the draining valve 5 is connected with the inner barrel
It is logical, the water of the inner barrel can be discharged;Suspension 4 is additionally provided with the cylinder.
In the present embodiment, the conductor string body 1 can include leading between multiple conduits, two neighboring conduit
Cross conduit box cupling 14 to connect, so as to form the conductor string body 1 of lengthwise extension.The conductor string body 1 has relative upper end
And lower end.The upper end of the conductor string body 1 is that well head first 12 is specially deep water low pressure well oral 12, and being typically employed in the depth of water is
More than 1000 meters of deep water field.The lower end of the conductor string body 1 is provided with guide shoe 15, and the guide shoe 15 also is located at whole
The bottom of individual deep water composite conduit running string, so as to fashionable under the deep water composite conduit running string, is guided under this
Enter the smooth tripping in of tubing string.
In the present embodiment, the cylinder of the bucket foundation 6 integrally can be in hollow cylinder type, its top closure,
Open bottom end.Under it is fashionable, top is upper, and bottom is under.Certainly, the shape of the cylinder can also be the circle with certain taper
Taper etc., or can also be other shape designs, specifically, the application does not make specific restriction.Opened on the top
Provided with the perforate for wearing the conductor string body 1.The conductor string body 1 is fed through the cartridge type base by the perforate
Plinth 6, after the conductor string body 1 and the bucket foundation 6 cooperation, the top of the bucket foundation 6 forms blind end.
In the present embodiment, the axial limiting mechanism be arranged on the conductor string body 1 and the bucket foundation 6 it
Between, moved to axial for limiting the conductor string body 1 with the bucket foundation 6.Specifically, the axial limiting
Mechanism can be with snap-in structure, and the structure such as screw connection structure, certainly, the axial limiting mechanism can also can be realized for other
The mechanism that the conductor string body 1 and the bucket foundation 6 are moved to axial is limited, specifically, the application is herein simultaneously
Specific restriction is not made.It is preferred that, the axial limiting mechanism is the form of snap-in structure, is easy to reduce assembly difficulty, and protect
Reliability when card is used.
In the present embodiment, the Suspension 4 is used to provide lifting power for the bucket foundation 6.Specifically, described outstanding
The number of hanging piece 4 can be multiple, and multiple Suspensions 4 can be evenly distributed on the top of the bucket foundation 6.When described
The number of Suspension 4 is multiple, and when being evenly distributed on the top of the bucket foundation 6, it is ensured that the bucket foundation 6 by
Power is uniform.Specifically, the number of the Suspension 4 can for 2 or 3 and more than, specifically, the application does not make herein
It is specific to limit.When the Suspension 4 is arranged on the top of the bucket foundation 6, tripping in is rotated in the bucket foundation 6
When, for the form that Suspension 4 is arranged on cylinder lateral wall, it can avoid producing unnecessary rotational resistance.
Wherein, the concrete form of the Suspension 4 can be hanger etc., certainly, and it can also be other forms, specifically
, the application does not make specific limit herein.
In the present embodiment, the draining valve 5 is used to discharge in the water in the bucket foundation 6.Specifically, institute
Pump mouth and discharge outlet can be provided with by stating draining valve 5, wherein, the pump mouth can be arranged on the cylinder of bucket foundation 6
Interior, the discharge outlet can be arranged on outside the cylinder of bucket foundation 6, after the draining valve 5 starts, the cylinder of bucket foundation 6
Interior water can flow to outlet from the pump mouth, so as to realize the water discharge in the cylinder of bucket foundation 6.
In the present embodiment, the performance parameter of the draining valve 5 can be made according to application scenarios such as the actual depth of waters
Change to applicability, at least ensure that the water-carrying capacity that draining valve 5 is discharged can be more than the water-carrying capacity entered from cylinder bottom.
Particularly after depth is very deep, when requiring higher to the performance parameter of draining valve 5, multiple draining valves 5 can be used
The mode of superposition, to meet use requirement.That is, now, the number of the draining valve 5 can be it is multiple, for example can be with
For 2,3 and more than, specifically, the application does not make specific limit herein.When the number of the draining valve 5 is multiple
When, multiple draining valves 5 can be evenly provided on the top of the bucket foundation 6, so as to which the water in the cylinder of bucket foundation 6 is high
Effect is rapidly discharged.
A kind of deep water composite conduit running string provided in the application embodiment, by by bucket foundation 6 and deep water
Conduit is ingenious to combine to form deep water composite conduit running string, fashionable under, under the supporting role of bucket foundation 6, Neng Gouwei
Whole tubing string provides a supporting role power without needing longer cementing stress recovery " to wait as fashionable under traditional deep water conduit
Time ", and under the supporting role power that bucket foundation 6 is provided, whole tubing string can greatly shorten the depth of tripping in, that is,
Say, deep water composite conduit running string provided herein can save the cementing stress of deep water conduit composite conduit running string
" stand-by period " recovered, shorten tripping in length, substantially increase drilling well timeliness, saved construction technology cost.
In one embodiment, the position that the top of bucket foundation 6 coordinates with the conductor string body 1, which is provided with, leads
Pipe guiding mechanism 2.The catheter directed mechanism 2 is used to provide when being assembled with bucket foundation 6 for the conductor string body 1 and drawn
Lead.General, the aperture of the perforate for wearing the conductor string body 1 opened up on the top of bucket foundation 6 is slightly larger than
The diameter of the conductor string body 1.After catheter directed mechanism 2 are set, assembly difficulty can be substantially reduced.
Specifically, the catheter directed mechanism 2 is included in hollow inverted cone section, and with the hollow inverted cone section
The hollow cylindrical section connected.
Wherein, the hollow inverted cone section can be located at more than the top of bucket foundation 6, be mainly used in leading described
Guiding function from when tubular column main body 1 is assembled with the bucket foundation 6.The hollow cylindrical section can be predominantly located in the cylinder
In type basis 6, the outside of the cylindrical section can be fixed on the bucket foundation 6, and its inner side can be with the conductor string body 1
Cooperatively form axial limiting mechanism so that with bucket foundation 6 axial float will not occur for the conductor string body 1.
Fig. 3 is please referred to, in a specific embodiment, the axial limiting mechanism can lock machine for jump ring
Structure, it can include:The upper mounting boss 10 and lower installation base 11 formed on the outer wall of the conductor string body 1;Institute
The upper holding section 21 and lower holding section 22 of hollow cylindrical section formation are stated, wherein, the lower holding section 22 and the lower installation are convex
Platform 11 is fastened, and jump ring 3 is provided between the upper mounting boss 10 and the upper holding section 21.
Specifically, the lower installation base 11 can be in step-like, the lower holding section 22 can work as institute in scalariform of falling from power
State after conductor string body 1 and the assembling of bucket foundation 6, it is described to lead in the presence of the lower installation base 11 and lower holding section 22
The coverlet side axial limiting of tubular column main body 1, specifically, its will not relatively described bucket foundation 6 further move down.On described
Installation base 10 could be formed with toroidal cavity with the upper holding section 21, the jump ring 3 is provided with the toroidal cavity, in institute
Under the mating reaction for stating jump ring 3 and the conductor string body 1 and bucket foundation 6, the coverlet side axle of conductor string body 1 is to limit
Position, specifically, its will not relatively described bucket foundation 6 further move up.
Further, multiple spacing holes 23 circumferentially can be equably provided with the hollow cylindrical section, it is described
Spacer pin 24 is provided with spacing hole 23, the spacer pin 24 can be used for limiting the conductor string body 1 and the bucket foundation 6
Relatively rotate.
Further, can be in the inner side of the cylinder top in order to ensure that the bucket foundation 6 has higher intensity
Bucket foundation bottom plate 61 is provided with, the inside sidewalls of the cylinder are provided with barrel reinforcement 63, the cylindrical section to the cylinder
Triangle rib 62 is provided with the inside of body top.
In a detailed embodiment, the conduit diameter of conductor string body 1:36in (inch), design length:80
Rice, conduit mud face proud exposure:3 meters;The diameter of bucket foundation 6:6 meters, the height of bucket foundation 6:8 meters.
Referring to Fig. 4, based on the deep water composite conduit running string provided in above-mentioned embodiment, the application also provides one
The installation method under water of deep water composite conduit running string is planted, specifically, may include steps of:
Step S10:After deep water composite conduit running string is connected with drilling platforms, draining valve 5 is opened;
Step S12:The deep water composite conduit running string is sent into seabed, when the lower end in contact sea of conductor string body 1
During bed mud face, start injection tripping in process;
Step S14:When maintaining predetermined water-jet parameter progress injection tripping in process, progressively reduce hook weigh, will
Part tubing string load is put on bucket foundation 6;Increase the power drawn water in the bucket foundation 6 simultaneously, realize in the depth
Water composite conduit running string completes the press-in of the bucket foundation 6 while spraying tripping in;
Step S16:After the 6 complete tripping in of bucket foundation, the draining valve 5 is closed, the deep water composite guide is completed
The tripping in of pipe running string.
In addition, the installation method under water of the deep water composite conduit running string can also include:The default tripping in of distance is deep
When spending 2 meters to 3 meters, water-jet parameter is reduced.That is, before the complete tripping in of bucket foundation 6, can reduce in advance
Water-jet parameter, thus ensure bucket foundation 6 can accurately smoothly tripping in designated depth.
In the present embodiment, the deep water composite conduit running string can be sent into by the drilling rod of drilling platforms extra large
Bottom, accordingly, after the tripping in of the deep water composite conduit running string is completed, in addition to:Free the drilling rod.
In the present embodiment, bucket foundation 6 can be constituted into deep water by axial limiting mechanism with conductor string body 1 to answer
Close conduit running string.During running string, seabed can be sent into by the drilling rod of drilling platforms.In the mistake of the tripping in of bucket foundation 6
Cheng Zhong, the underwater robot that can will be provided with deep water pumping function is connected with the drainpipe of bucket foundation 6, carries out draining,
Assist the tripping in of bucket foundation 6.When distance 2-3 meters of depth of setting of design, water-jet parameter can be reduced, bucket foundation 6 is treated
After complete tripping in, assisted to close draining valve 5 with underwater robot, complete the tripping in process of whole tubing string.Brill can subsequently be freed
Bar, carries out " two open " drilling process.
The present invention is by a kind of deep water composite conduit running string and its design of installation method under water, and achievable deep water is led
Without waiting for " stand-by period " of 6~12 hours after pipe tripping in, i.e., conduit can be freed after the completion of tripping in operation immediately and carries out " two
Open " drilling process.
Herein cited any digital value all include between lower limit to higher limit with the lower value of an incremented and
The all values of upper value, the interval that there are at least two units between any lower value and any much higher value.For example, such as
Fruit elaborates that the quantity of part or the value of process variable (such as temperature, pressure, the time) are from 1 to 90, preferably from 20
To 80, more preferably from 30 to 70, then purpose is to illustrate that such as 15 to 85,22 are also clearly listed in the specification arrives
68th, 43 to 51,30 to 32 is equivalent.For the value less than 1, it is 0.0001,0.001,0.01,0.1 suitably to think a unit.
These are only intended to the example clearly expressed, it is believed that the numerical value enumerated between minimum and peak is possible to
Combination is all expressly set forth in the specification in a similar manner.
Unless otherwise indicated, all scopes all include all numerals between end points and end points.It is used together with scope
" about " or " approximate " be suitable for two end points of the scope.Thus, " about 20 to 30 " are intended to covering " about 20 to about
30 ", at least end points including indicating.
All articles and reference disclosed, including patent application and publication, for various purposes by quoting knot
Together in this.Describe the term " substantially by ... constitutes " of combination should include determined by element, composition, part or step and reality
There is no other elements, composition, part or the step of the basic novel feature for influenceing the combination in matter.Using term "comprising" or
" comprising " describes the combination of element here, composition, part or step it is also contemplated that basic by these elements, composition, part
Or the embodiment that step is constituted.Here by using term " can with ", it is intended to which illustrate that " can with " include is described any
Attribute is all optional.
Multiple element, composition, part or step can be provided by single integrated component, composition, part or step.It is alternative
Ground, single integrated component, composition, part or step can be divided into multiple element, composition, part or the step of separation.It is used for
The open "a" or "an" for describing element, composition, part or step is not said to exclude other elements, composition, part
Or step.
Each above-mentioned embodiment in this specification is described by the way of progressive, identical between each embodiment
Similar portion is cross-referenced, and what each embodiment was stressed is and other embodiment difference.
The foregoing is only several embodiments of the invention, although disclosed herein embodiment as above, but institute
Content is stated only to facilitate the embodiment for understanding the present invention and using, is not intended to limit the present invention.Any institute of the present invention
Belong to those skilled in the art, do not depart from disclosed herein spirit and scope on the premise of, can be in embodiment
Formal and details on make any modification and change, but the scope of patent protection of the present invention still must be with appended claims
The scope that book is defined is defined.
Claims (12)
1. a kind of deep water composite conduit running string, it is characterised in that including:Conductor string body and bucket foundation, wherein,
The conductor string body is formed by connecting by multiple conduits by conduit box cupling, and the conductor string body has relative upper end
And lower end, the upper end of the conductor string body is well head head, and the lower end of the conductor string body is provided with guide shoe;
The bucket foundation generally hollow cylinder, the cylinder has relative top and bottom, and the bottom is opening
End, the top is equipped with the conductor string body formation blind end;
It is additionally provided between the conductor string body and the bucket foundation for limiting the conductor string body and the cartridge type
The axial limiting mechanism of basis axial movement;
Draining valve is additionally provided with the cylinder, the draining valve is connected with the inner barrel, can be by the inner barrel
Water discharge;
Suspension is additionally provided with the cylinder.
2. deep water composite conduit running string as claimed in claim 1, it is characterised in that the bucket foundation top with it is described
The position of conductor string body fits is provided with catheter directed mechanism.
3. deep water composite conduit running string as claimed in claim 2, it is characterised in that the catheter directed mechanism is including being in
Hollow inverted cone section, the inverted cone section is located at more than the top.
4. deep water composite conduit running string as claimed in claim 3, it is characterised in that the catheter directed mechanism also includes
The hollow cylindrical section connected with the hollow inverted cone section.
5. deep water composite conduit running string as claimed in claim 4, it is characterised in that the axial limiting mechanism is jump ring
Retaining mechanism, it includes:
The upper mounting boss and lower installation base formed on the outer wall of the conductor string body;
In the upper holding section and lower holding section of the hollow cylindrical section formation, wherein, the lower holding section and the lower installation
Boss is fastened, and jump ring is provided between the upper mounting boss and the upper holding section.
6. deep water composite conduit running string as claimed in claim 5, it is characterised in that on the hollow cylindrical section along
Circumferential be equably provided with multiple spacing holes, the spacing hole is provided with spacer pin.
7. deep water composite conduit running string as claimed in claim 1, it is characterised in that the Suspension be it is multiple, it is multiple
The Suspension is evenly distributed on the top.
8. deep water composite conduit running string as claimed in claim 1, it is characterised in that the number of the draining valve is many
Individual, multiple draining valves are evenly distributed on the top.
9. deep water composite conduit running string as claimed in claim 4, it is characterised in that the inner side of the cylinder top is set
Have and be provided with triangle rib, the inside sidewalls of the cylinder on the inside of bucket foundation bottom plate, the cylindrical section to the cylinder top
It is provided with barrel reinforcement.
10. a kind of installation method under water of deep water composite conduit running string as claimed in claim 1, it is characterised in that bag
Include:
After deep water composite conduit running string is connected with drilling platforms, draining valve is opened;
The deep water composite conduit running string is sent into seabed, when the lower end in contact seabed mud face of conductor string body, started
Spray tripping in process;
When maintaining predetermined water-jet parameter progress injection tripping in process, progressively reduce hook weigh, by part tubing string load
Put on bucket foundation;Increase the power drawn water in the bucket foundation simultaneously, realize in the deep water composite conduit tripping in
Tubing string completes the press-in of the bucket foundation while spraying tripping in;
After the bucket foundation complete tripping in, the draining valve is closed, is completed under the deep water composite conduit running string
Enter.
11. method as claimed in claim 10, it is characterised in that also include:During 2 meters to 3 meters of the default depth of setting of distance, drop
Low water-jet parameter.
12. method as claimed in claim 10, it is characterised in that described that the deep water composite conduit running string is sent into sea
Bottom is to be sent into by the drilling rod of drilling platforms, accordingly, after the tripping in of the deep water composite conduit running string is completed, is also wrapped
Include:Free the drilling rod.
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CN201710513380.2A CN107191138A (en) | 2017-06-29 | 2017-06-29 | Deepwater composite conduit running tubular column and underwater installation method thereof |
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CN201710513380.2A CN107191138A (en) | 2017-06-29 | 2017-06-29 | Deepwater composite conduit running tubular column and underwater installation method thereof |
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CN108661568A (en) * | 2018-05-18 | 2018-10-16 | 中国石油大学(北京) | Deep water conduit device |
CN109538122A (en) * | 2018-12-29 | 2019-03-29 | 中国石油大学(北京) | Deep water downcomer means and system |
CN111980594A (en) * | 2020-07-07 | 2020-11-24 | 中国海洋石油集团有限公司 | Temporary seabed base plate and method for installing deepwater surface layer conduits in batches |
CN113187438A (en) * | 2021-05-28 | 2021-07-30 | 中国石油大学(北京) | Installation device and installation method of deep water surface layer conduit |
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CN2878506Y (en) * | 2004-11-29 | 2007-03-14 | 天津市海王星海上工程技术有限公司 | Single point mooring portal platform |
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