CN110500045A - A kind of novel mechanical structures casing stabbing board and righting method - Google Patents
A kind of novel mechanical structures casing stabbing board and righting method Download PDFInfo
- Publication number
- CN110500045A CN110500045A CN201910674173.4A CN201910674173A CN110500045A CN 110500045 A CN110500045 A CN 110500045A CN 201910674173 A CN201910674173 A CN 201910674173A CN 110500045 A CN110500045 A CN 110500045A
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- hoop
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- mechanical structures
- disc spring
- novel mechanical
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims abstract description 5
- 230000009471 action Effects 0.000 claims abstract description 4
- 239000003129 oil well Substances 0.000 claims abstract description 4
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 18
- 239000000956 alloy Substances 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 210000005069 ears Anatomy 0.000 claims description 4
- 230000006870 function Effects 0.000 claims description 3
- KHYBPSFKEHXSLX-UHFFFAOYSA-N iminotitanium Chemical compound [Ti]=N KHYBPSFKEHXSLX-UHFFFAOYSA-N 0.000 claims description 2
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 2
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 12
- 238000012360 testing method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000004568 cement Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 238000005553 drilling Methods 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005381 potential energy Methods 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- -1 Weakness leakage Chemical compound 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1014—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
Abstract
The invention belongs to reinforcing oil well technical fields, disclose a kind of novel mechanical structures casing stabbing board and righting method, power supply circuit containing heater strip, it is heated after being powered to marmem, after heating marmem deformation occurs expansion become larger, by installation, there are two the hoops of break bolt along hoop tangential direction one tangential force of application, and then apply the pulling force of an axial direction to break bolt, it is to wait when marmem is expanded into a degree of, break bolt is pulled off, the coordinate force that hoop gives righting strip disappears, to be both disc spring, which restore deformation by compressive state, gives hoop one axial thrust, hoop is axially moveable under the thrust of disc spring and radially struts branch arch support, with strutting for branch arch support, it is contacted between branch arch support and the borehole wall, give centralizer one support force to radial direction, and then casing is supporting It is supported under the action of power by centralizer, has the function that righting.The invention enables centralizers to realize the function of righting under the elastic force of disc spring.
Description
Technical field
The invention belongs to reinforcing oil well technical field more particularly to a kind of novel mechanical structures casing stabbing boards and " Fuzheng Decoction
Method.
Background technique
Currently, the prior art commonly used in the trade is such that oil-field structure is not yet with the increase of oil exploitation dynamics
It is disconnected to increase, it will appear the oil field of many single oil reservoirs, oil sheet in succession, due to the increase of the changeable and type in oil field, using perpendicular
Straight well drilling well just seems that some are unable to do what one wishes, therefore horizontal well drilling technology also occurs therewith.In single oil reservoir, the oil of oil sheet
Field just will appear drilling well number if using Vertical Well more, and consumption is big and income is few, Fei Shi, bothersome, laborious, and if using water
Horizontal well christmas, can greatly improve drilling efficiency, increase casing by underground oil and gas resource and above-ground structures in oil reservoir
Contact surface greatly increase the efficiency of oil exploitation so as to realize the raising of fluid extraction efficiency.
Although horizontal well can solve these problems, just have to cement the well due to recovering the oil, horizontal cementing is again
It is the new a kind of problem occurred, setting of casing is needed in well cementing process, and is covered under the effect of gravity under casing into horizontal well
Pipe outer wall therefore is brought a great deal of trouble to well cementation close to horizontal well pit shaft lower edge.
In conclusion problem of the existing technology is: needing setting of casing in well cementing process, and arrive horizontal well under casing
In under the effect of gravity sleeve outer wall be to cause gap between casing and open hole well uneven close to horizontal well pit shaft lower edge
It is even, above gap it is big, below gap it is small.In well cementation, the cement in annular space is unevenly distributed, and will lead to crude oil or natural gas edge
Weakness leakage, causes the accident, brings a great deal of trouble to production..
It solves the difficulty of above-mentioned technical problem: since horizontal case is mostly below ground 3000-6000 meters, adding
The diameter of drilling well is all smaller, and the space for placing dedicated support equipment is smaller, carrys out driving device without suitable power source；
In addition precisely due to deep, control signal can not transmit in place, and control system can not be built, this both increases technical difficulty.
Solve the meaning of above-mentioned technical problem: the invention does not have to carry power source again at work, just with disc spring pressure
Compression deformation potential energy simplifies implementation method as power source.When work, control system is become using temperature rise driving marmem
Shape elongation, then the bolt of the disconnected fixed disc spring in top, disc spring deformation release are naked by sleeve position, enabling horizontal case be centered in
In eye well, cement thickness is evenly distributed, is closely knit in annular space, guarantees that crude oil or natural gas will not be revealed along weakness, improves quality
Well cementation, increase crude output.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of novel mechanical structures casing stabbing board and " Fuzheng Decoctions
Method.
The invention is realized in this way a kind of mechanical structure casing centering method, the mechanical structure casing centering method
For the power supply circuit containing heater strip, heated after being powered to marmem, deformation occurs for marmem after heating
Expansion becomes larger, will installation there are two break bolt hoop along hoop tangential direction apply a tangential force, and then to fracture spiral shell
Bolt applies the pulling force of an axial direction, is to wait when marmem is expanded into a degree of, break bolt is pulled off, and hoop is given
The coordinate force for giving righting strip disappears, and to be both disc spring, which restore deformation by compressive state, gives hoop one axial thrust, and hoop is in disc spring
Thrust under be axially moveable and radially strut branch arch support, with strutting for branch arch support, between branch arch support and the borehole wall
Contact gives centralizer one to radial support force, and then casing is supported under the action of support force by centralizer, reaches
To the effect of righting.
Another object of the present invention is to provide a kind of novel mechanical knots for realizing the mechanical structure casing centering method
Structure casing stabbing board, the novel mechanical structures casing stabbing board are provided with
End hoop；
End hoop is bolted with support bar, and the rectangular channel of disc spring slides by guide rail of support bar, between hoop and support bar
It is bolted and snaps connection, it is hinged between branch arch support and end hoop and hoop, it is hinged between branch arch support, hold hoop and hoop by disc spring
Be threadedly coupled between compression, break bolt and hoop, marmem cover in break bolt in hoop it is radially slotted it
Between.
Further, the end hoop material 60Mn；Outer diameter is Φ 195mm, internal diameter 140mm, is connected with support bar and branch arch support
It connects；There are six ears in end, and having a diameter on every ear is the through-hole of Φ 6mm, bends for hinged support, inside has out
Slot, the connection for thering is threaded hole to be used to support item at fluting, radical length 55mm.End hoop is primarily subjected to the reaction force of disc spring,
Guarantee that there is enough intensity and toughness.
Further, the disc spring material is 60Si2MnA；Outer diameter is Φ 194mm, internal diameter 140mm, with a thickness of 4mm, band
Taper opens 3 rectangular channels；It is connected at fluting between support bar with guide rail mode sliding.It can guarantee disc spring after being compressed
Enough potential energy is stored, and is used for multiple times without fatigue rupture.
Further, the hoop material 60Mn；Outer diameter is Φ 195mm, internal diameter 140mm, is connected with support bar and branch arch support
It connects；There are six ears in end, and having a diameter on every ear is the through-hole of Φ 6mm, bends for hinged support, inside has out
Slot, the connection for having threaded hole to be used to support item at fluting, radical length 75mm, inside are provided with conducting wire mounting groove, battery installation
Slot.Hoop mainly plays a part of to connect disc spring and branch arch support, guarantees there is some strength and wearability requirement.
Further, the support bowstave material is 60Mn；Both ends are respectively the hinge hole of 6.4mm there are two internal diameter, one of them
One end and hoop it is hinged, the other end and another branch arch support are hinged, the other end of another branch arch support and end hoop are hinged；Two
The maximum angle that arch support is hingedly formed afterwards is 178 °, and minimum angles are 60 °.Branch arch support is 178 ° of maximum angle before switch is opened
Primarily to preventing self-locking situation；Minimum angles are 60 ° and guarantee there is enough support stiffness.
Further, the support strip material is 60Mn；Length 382mm, width 35mm are provided with 3 slots, expel from and open respectively
There is a counter sink, for connecting two end hoops and one hoop.Require certain intensity and wearability.
Further, the break bolt material is 65Mn；Nominal diameter is Φ 6mm, and length 53mm, middle part is provided with annular
Slot, diameter of the bolt at annular groove are Φ 4mm, are used cooperatively with marmem.Ensure that all break bolts can be
Fracture is concentrated at Φ 4mm, makes disc spring potential energy is unified to discharge, drive sleeve is placed in the middle.
Further, the shape memory alloy material is Ni-Ti alloy, outer diameter 16mm, internal diameter 8mm；Match with break bolt
It closes and uses, break bolt is broken in expansion under heating state.Memorial alloy deformation temperature is set as 65 DEG C, heats at this temperature
For a period of time, break bolt is broken suddenly, successively discharges hoop, disc spring, is opened branch arch support, is propped up horizontal case.
Another object of the present invention is to provide a kind of reinforcing oil wells using the novel mechanical structures casing stabbing board
Platform.
The method for being currently used for horizontal cementing casing centralization is not much that the most typical one is that expanding casing is helped
Positive device will install the bunch tube G.I.H of guide shoe, ball seat and expanding casing stabbing board, and pitching is suppressed, expanding centralizer
It opens, supports the borehole wall, continue to suppress, suppress ball seat, casing is inside and outside to establish circulation, well of having cemented the well.The process requirement pitching
It suppresses, and to destroy ball seat, there is certain uncertainty.
In conclusion advantages of the present invention and good effect are as follows: during the work time, power supply is powered the present invention, shape note
Recalling alloy, deformation occurs, and break bolt is broken, and disc spring restores deformation, and branch arch support gets up collar supports, solves horizontal cementing
Difficult problem；During the work time, branch arch support, disc spring, break bolt, marmem etc. are all the easy structures of comparison,
Simple process, material type is less, and waste rate is low, and manufacturing cost is low.
Of the invention is reasonable in design, and functional component is simple, production easy to process, and it is easy to operate be conducive to promote answer
With.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of novel mechanical structures casing stabbing board provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of end hoop provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of disc spring provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of break bolt provided in an embodiment of the present invention；
In figure: 1, end hoop；2, disc spring；3, hoop；4, branch arch support；5, support bar；6, break bolt；7, shape memory closes
Gold.
Fig. 5 is the breaked bolt schematic diagram of test provided in an embodiment of the present invention.
Fig. 6 is tensile strength distribution curve schematic diagram provided in an embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Centralizer of the invention makes casing placed in the middle in horizontal well pit shaft, so that the cement of well cementation can be in casing week
It encloses to form the uniform cement sheath of thin and thick, reaches good well cementation effect.
Application principle of the invention is explained in detail with reference to the accompanying drawing.
As shown in Figure 1, novel mechanical structures casing stabbing board provided in an embodiment of the present invention includes: end hoop 1, disc spring 2, ring
Bind round 3, branch arch support 4, support bar 5, break bolt 6, marmem 7.
End hoop 1 is bolted with support bar 5, and the rectangular channel of disc spring 2 is guide rail sliding, hoop 3 and support bar with support bar 5
To be bolted and snap connection between 5, be between branch arch support 4 and end hoop 1 and hoop 3 it is hinged, be between branch arch support 4 it is hinged,
End hoop 1 and hoop 3 will be to be threadedly coupled between the compression of disc spring 2, break bolt 6 and hoop 3, and 7 sets of marmem are being broken
On bolt in hoop it is radially slotted between.
In the embodiment of the present invention, as shown in Figure 1, all threaded connections all do not need encapsulation process, still in assembling process
All screw threads relevant to end hoop 1 and hoop 3, which must all be done, loosens processing, has to pacify according to processing step in assembling process
Dress, otherwise not can guarantee usability.
In the embodiment of the present invention, as shown in Fig. 2, end 1 intensity of hoop must be enough, disc spring 2 applies to end hoop 1 and hoop 3
Axial elastic force is excessive, guarantees that end hoop 1 and hoop 3 intensity is to guarantee the basis of usability.
In the embodiment of the present invention, as shown in figure 3, disc spring 2 guarantees its intensity and elastic force, big decrement are sufficiently long
Between it is lower to guarantee that original deformation can be restored to before or approximate deformation before appearance.
In the embodiment of the present invention, as shown in figure 4, break bolt 6, which is mounted on hoop 3, needs to guarantee that feelings are not used in centralizer
Bolt is not broken under condition, and bolt is broken in the case where centralizer use, i.e. the usability of guarantee centralizer and reliable
Property.
The present invention contains the power supply circuit of heater strip, heats after being powered to marmem, shape memory after heating
Alloy deformation occurs expansion become larger, will installation there are two break bolt hoop along hoop tangential direction apply a tangential force,
And then apply the pulling force of an axial direction to break bolt, and it is to wait when marmem is expanded into a degree of, break bolt
It is pulled off, the coordinate force that hoop gives righting strip disappears, and is both that disc spring is pushed away by compressive state recovery deformation to one axial direction of hoop
Power, hoop are axially moveable under the thrust of disc spring and radially strut branch arch support, with strutting for branch arch support, support
Bow and contacted between the borehole wall, give centralizer one to radial support force, so casing under the action of support force by righting
Device supports, and has the function that righting.The invention enables centralizers to realize the function of righting under the elastic force of disc spring.
The component of most critical of the present invention is exactly the structure of break bolt, and whether the structure design of break bolt rationally decides
The success or failure of the normal work of whole device, for this purpose, carrying out breaking test test to break bolt is very important.Break bolt
The material selected of test and when design selected equal 65Mn of material.In order to keep the result reliability of test higher, therefore try
Sample is the exemplar that GB/T 711-88 137 0,210 4496 is made into according to national standards, and in test that meet national standards
Exemplar is tested on instrument, test be completed under conditions of room temperature (room temperature) and Slow loading (static load) with selection
Marmem it is the same or similar to the load effect of break bolt, according to magnitude of load suffered by sample and corresponding
Deformation record test data, until sample is pulled off.Fig. 5 is to test breaked bolt, and breaking part is in the ring of design
At shape slot, and sample break bolt in fracture process generates almost without displacement, plastic-less deformation, and bolt gap is concordant,
For typical braced fracture.During the test, fracture is since as the load increases, internal hole is fast to exemplar
Speed, which expands, is converted to crackle, until bolt goes out to be broken in crackle.For the size such as Fig. 5 institute for testing break bolt exemplar used
Show.
If Fig. 6 is tensile strength distribution curve, it can be seen that the strength of materials of 65Mn is larger, and it is very that dispersibility is smaller
It is suitble in the design of this break bolt that separate in use.When bolt is by biggish pulling force, rings of material
The stress of shape slot part exceeds the yield strength of material, it was demonstrated that the reasonability of bolt arrangement, it is ensured that bolt can be in the short time
It is interior to be smoothly pulled off.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of mechanical structure casing centering method, which is characterized in that the mechanical structure casing centering method is to contain heating
Silk power supply circuit, be powered after give marmem heating, after heating marmem deformation occurs expansion become larger, will
There are two the hoops of break bolt for installation along hoop tangential direction one tangential force of application, and then break bolt is given to apply an axis
To pulling force, be to wait when marmem is expanded into a degree of, break bolt is pulled off, and hoop gives matching for righting strip
Resultant force disappears, and to be both disc spring, which restore deformation by compressive state, gives hoop one axial thrust, and hoop is under the thrust of disc spring
It is axially moveable and radially struts branch arch support, with strutting for branch arch support, contacted between branch arch support and the borehole wall, give righting
Device one support force to radial direction, and then casing is supported under the action of support force by centralizer, has the function that righting.
2. a kind of novel mechanical structures casing stabbing board for realizing mechanical structure casing centering method described in claim 1, special
Sign is that the novel mechanical structures casing stabbing board is provided with
End hoop；
End hoop is bolted with support bar, and the rectangular channel of disc spring slides by guide rail of support bar, bolt between hoop and support bar
It connects and snaps connection, it is hinged between branch arch support and end hoop and hoop, it is hinged between branch arch support, hold hoop and hoop by disc spring pressure
Be threadedly coupled between contracting, break bolt and hoop, marmem cover in break bolt in hoop it is radially slotted between.
3. novel mechanical structures casing stabbing board as claimed in claim 2, which is characterized in that the end hoop material 60Mn；Outside
Diameter is Φ 195mm, and internal diameter 140mm is connect with support bar and branch arch support；There are six ears in end, has one on every ear
Diameter is the through-hole of Φ 6mm, is bent for hinged support, there is fluting in inside, has threaded hole to be used to support the connection of item, diameter at fluting
It is 55mm to length.
4. novel mechanical structures casing stabbing board as claimed in claim 2, which is characterized in that the disc spring material is
60Si2MnA；Outer diameter is Φ 194mm, internal diameter 140mm, and with a thickness of 4mm, band taper opens 3 rectangular channels；At fluting and prop up
It is connected between stay with guide rail mode sliding.
5. novel mechanical structures casing stabbing board as claimed in claim 2, which is characterized in that the hoop material 60Mn；Outside
Diameter is Φ 195mm, and internal diameter 140mm is connect with support bar and branch arch support；There are six ears in end, has one on every ear
Diameter is the through-hole of Φ 6mm, is bent for hinged support, there is fluting in inside, has threaded hole to be used to support the connection of item, diameter at fluting
It is 75mm to length, inside is provided with conducting wire mounting groove, battery settling groove.
6. novel mechanical structures casing stabbing board as claimed in claim 2, which is characterized in that the support bowstave material is
60Mn；Both ends respectively there are two internal diameter be 6.4mm hinge hole, the one end and hoop of one of them are hinged, the other end and another
Branch arch support is hinged, and the other end and end hoop of another branch arch support are hinged；The maximum angle that two arch supports are hingedly formed afterwards is 178 °,
Minimum angles are 60 °.
7. novel mechanical structures casing stabbing board as claimed in claim 2, which is characterized in that the support strip material is
60Mn；Length 382mm, width 35mm are provided with 3 slots, expel from and have a counter sink, for connect two ends hoop with
One hoop.
8. novel mechanical structures casing stabbing board as claimed in claim 2, which is characterized in that the break bolt material is
65Mn；Nominal diameter is Φ 6mm, length 53mm, and middle part is provided with annular groove, and diameter of the bolt at annular groove is Φ 4mm, with
Marmem is used cooperatively.
9. novel mechanical structures casing stabbing board as claimed in claim 2, which is characterized in that the shape memory alloy material
For Ni-Ti alloy, outer diameter 16mm, internal diameter 8mm；It is used cooperatively with break bolt, break bolt is broken in expansion under heating state.
10. a kind of reinforcing oil well platform using novel mechanical structures casing stabbing board described in claim 2~9 any one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910674173.4A CN110500045A (en) | 2019-07-25 | 2019-07-25 | A kind of novel mechanical structures casing stabbing board and righting method |
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| CN201910674173.4A CN110500045A (en) | 2019-07-25 | 2019-07-25 | A kind of novel mechanical structures casing stabbing board and righting method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112031677A (en) * | 2020-11-05 | 2020-12-04 | 胜利油田固邦石油装备有限责任公司 | Anti-deformation casing centralizer for oil exploitation |
| CN113250628A (en) * | 2021-07-16 | 2021-08-13 | 山东辛丁技术有限公司 | Hydraulic casing centralizer for oil exploitation |
| CN113356769A (en) * | 2021-07-02 | 2021-09-07 | 中国农业大学 | Variable-diameter shape memory alloy centralizer and centralizing performance testing method |
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| CN113356769A (en) * | 2021-07-02 | 2021-09-07 | 中国农业大学 | Variable-diameter shape memory alloy centralizer and centralizing performance testing method |
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