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 PDF

Info

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
Authority
CN
China
Prior art keywords
composite conduit
deep water
string
conduit running
bucket foundation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710513380.2A
Other languages
Chinese (zh)
Inventor
阚长宾
杨进
周建良
刘书杰
刘正礼
王宴滨
许鑫
徐国贤
王贤斯
郭晓俊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Petrochina Co Ltd
Original Assignee
Petrochina Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Petrochina Co Ltd filed Critical Petrochina Co Ltd
Priority to CN201710513380.2A priority Critical patent/CN107191138A/en
Publication of CN107191138A publication Critical patent/CN107191138A/en
Pending legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/20Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/18Drilling by liquid or gas jets, with or without entrained pellets
    • E21B7/185Drilling 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

Deep water composite conduit running string and its under water installation method
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.
CN201710513380.2A 2017-06-29 2017-06-29 Deepwater composite conduit running tubular column and underwater installation method thereof Pending CN107191138A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710513380.2A CN107191138A (en) 2017-06-29 2017-06-29 Deepwater composite conduit running tubular column and underwater installation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710513380.2A CN107191138A (en) 2017-06-29 2017-06-29 Deepwater composite conduit running tubular column and underwater installation method thereof

Publications (1)

Publication Number Publication Date
CN107191138A true CN107191138A (en) 2017-09-22

Family

ID=59880506

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710513380.2A Pending CN107191138A (en) 2017-06-29 2017-06-29 Deepwater composite conduit running tubular column and underwater installation method thereof

Country Status (1)

Country Link
CN (1) CN107191138A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN201043271Y (en) * 2007-04-23 2008-04-02 中国海洋石油总公司 Sink preventing and leveling device for installation of offshore platform pile pipe frame
CN103046521A (en) * 2011-10-11 2013-04-17 天津市海王星海上工程技术有限公司 Novel, simple and easy wellhead rack structure and construction method
CN104420829A (en) * 2013-08-26 2015-03-18 戴维·M·米勒 Well multiple casing installation system
CN105992857A (en) * 2014-02-07 2016-10-05 因诺威特系统有限公司 Wellbore installation apparatus and associated methods

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN201043271Y (en) * 2007-04-23 2008-04-02 中国海洋石油总公司 Sink preventing and leveling device for installation of offshore platform pile pipe frame
CN103046521A (en) * 2011-10-11 2013-04-17 天津市海王星海上工程技术有限公司 Novel, simple and easy wellhead rack structure and construction method
CN104420829A (en) * 2013-08-26 2015-03-18 戴维·M·米勒 Well multiple casing installation system
CN105992857A (en) * 2014-02-07 2016-10-05 因诺威特系统有限公司 Wellbore installation apparatus and associated methods

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108661568A (en) * 2018-05-18 2018-10-16 中国石油大学(北京) Deep water conduit device
CN108661568B (en) * 2018-05-18 2019-11-08 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
CN109538122B (en) * 2018-12-29 2024-05-24 中国石油大学(北京) Deep underwater catheter device 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
CN111980594B (en) * 2020-07-07 2022-07-12 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

Similar Documents

Publication Publication Date Title
EP2205817B1 (en) Anchored riserless mud return systems
CN101070755B (en) Pressure-control well-drilling device based two gradients
CN107227746A (en) Seabed mud surface anchoring type deepwater conduit structure and underwater installation method thereof
CN107191138A (en) Deepwater composite conduit running tubular column and underwater installation method thereof
JP4066070B2 (en) How to prevent dangerous annulus pressure rise
EP1327050B1 (en) Cement shoe assembly for monobore well
US20050103525A1 (en) Method and device for liner system
CA2630576A1 (en) Method for varying the density of drilling fluids in deep water oil and gas drilling applications
US20060169491A1 (en) Method and arrangement for performing drilling operations
CA2540880A1 (en) A method and device for controlling drilling fluid pressure
US4086971A (en) Riser pipe inserts
WO2017039649A1 (en) Software simulation method for estimating fluid positions and pressures in the wellbore for a dual gradient cementing system
AU2013200428A1 (en) Redeployable subsea manifold-riser system
CN201059187Y (en) Pressure-control drilling device based on double gradient
CN208900028U (en) A kind of double-gradient well drilling system
EP0952301B1 (en) Method and apparatus for drilling an offshore underwater well
US7451822B2 (en) Method for retrieving riser for storm evacuation
CN205858311U (en) A kind of bore hole staged fracturing completion tubular column
CN107587849A (en) Deep water drilling conduit
US8833463B2 (en) Above mudline whipstock for marine platform drilling operations
CN107268671A (en) Deepwater cylindrical foundation and underwater installation method thereof
CN111058792A (en) Coiled tubing perforation-free under-pressure operation-free well completion device and method
US11530595B2 (en) Systems and methods for horizontal well completions
US6244347B1 (en) Subsea well drilling and/or completion apparatus
US20010020533A1 (en) Method for drilling and completing oil wells with small intermediate diameters

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20170922

RJ01 Rejection of invention patent application after publication