CN205100898U - Well cementation subassembly and routed formula sleeve pipe that contracts floats coupling thereof - Google Patents
Well cementation subassembly and routed formula sleeve pipe that contracts floats coupling thereof Download PDFInfo
- Publication number
- CN205100898U CN205100898U CN201520888419.5U CN201520888419U CN205100898U CN 205100898 U CN205100898 U CN 205100898U CN 201520888419 U CN201520888419 U CN 201520888419U CN 205100898 U CN205100898 U CN 205100898U
- Authority
- CN
- China
- Prior art keywords
- dividing plate
- toroidal membrane
- arc length
- annular element
- housing
- 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.)
- Withdrawn - After Issue
Links
Abstract
The utility model discloses a routed formula sleeve pipe that contracts floats the coupling, including casing, outer loop baffle, inner ring baffle, smooth stopper and shearing pin nail, the casing is the tubular structure, and its inner wall middle part is equipped with the toper circular bead, the outer loop baffle comprises fan -shaped baffle of several and type trapezoidal baffle alternate inseparable range in proper order, and it is located toper circular bead department, the inner ring baffle comprises fan -shaped baffle of several and type trapezoidal baffle alternate inseparable range in proper order, and it is located the inboard conical surface department of outer loop baffle, smooth stopper is cylindric structure, is located inner ring baffle center and links to each other through the shearing pin nail, the risk at the intraductal emergence blocked portion of cover can be eliminated through the routed formula inner structure that contract to this scheme, avoids producing great cementing quality accident, can adjust the broken pressure that leads to through the material and the diameter that change the shearing pin nail, going on smoothly of guarantee well cementation construction ensures that the fully provided sleeve pipe floats the application of optimization requirement. The utility model also discloses a well cementation subassembly that the applied above -mentioned showy coupling of formula sleeve pipe that contracts of bursting of.
Description
Technical field
The utility model relates to oil drilling industry cementing tool technical field, particularly one well cementation assembly and collapse type casing float collar thereof.
Background technology
In the cementing operation process of extended horizontal well, bunch tube is entered to there is larger difficulty under horizontal segment is smooth, and adopts Casing Floating Technology to be comparatively effective technological means; The core of this technology adopts casing float collar to empty in horizontal segment sleeve pipe or to inject low density liquid, then utilizes liquid buoyancy effect in well to enter frictional resistance under reducing sleeve pipe; Current casing float collar mainly contains sliding sleeve type and blind plate type two type.
Though the floating coupling structure disclosed in Chinese patent ZL201320293830.4, ZL201220567007.8, ZL201420767882.X, ZL200820124103.9, ZL201120358366.8 etc. is different, but be sliding sleeve type, the floating coupling not only complex structure of the type, and all by cementing plug, its internal construction need be pushed into shaft bottom; In addition, because the gap between its internal construction and internal surface of sleeve pipe is less, once cause blocked portion because of casing deformation or other reason, serious cementing quality accident will be caused.
The blind plate type that is floating coupling disclosed in Chinese patent ZL201020284037.9, ZL201120119090.8, the inner primary structure of floating coupling of the type is the blind plate be made up of fragile material, and its main deficiency is that its broken logical pressure not easily accurately regulates; The failure of casing floating casing job can be caused when broken logical hypotony, then can affect carrying out smoothly of cementing operation operation during broken logical hypertonia, be unfavorable for safe construction.
Therefore, current casing float collar still fully can not meet the application requirement of Casing Floating Technology.
Utility model content
In view of this, the utility model provides a kind of collapse type casing float collar, can realize floating casing job by it, eliminates the risk that blocked portion occurs its internal construction in sleeve pipe simultaneously, and accurately can regulate the broken logical pressure of its internal construction, fully meet the application requirement of Casing Floating Technology.
The utility model additionally provides a kind of well cementation assembly applying above-mentioned collapse type casing float collar.
For achieving the above object, the utility model provides following technical scheme:
A kind of collapse type casing float collar, comprises housing and the partition that is arranged on wherein and position-limit mechanism; The inner chamber of described housing can be divided into two parts by described partition vertically; Described position-limit mechanism can provide towards the axial support of described housing high pressure end for described partition;
Described partition is made up of multiple separating element, and for rear shrinkable structure of disintegrating can be supported at the axial limiting losing described position-limit mechanism;
The intensity of described position-limit mechanism is less than the intensity of described partition.
Preferably, described separating element comprises toroidal membrane and is arranged on the sliding plug of described toroidal membrane center;
Described toroidal membrane is made up of multiple annular element, and the fitting face between multiple described annular element has component radially; The outside of described toroidal membrane has the first axial limiting face, and the inwall of described housing is provided with the second axial limiting face for coordinating with described first axial limiting face, can provide towards the support of described housing high pressure end for described toroidal membrane; The inner side of described toroidal membrane is first face of cylinder;
The outside of described sliding plug is second face of cylinder for coordinating with described first face of cylinder;
Described position-limit mechanism comprises shear pin, and described shear pin can slide the first spacing hole of plug and the second spacing hole of described toroidal membrane through described, and the axes normal of described first spacing hole and described second spacing hole is in the axis of described housing.
Preferably, the first axial limiting face outside described toroidal membrane is the conical surface; The inwall of described housing is provided with tapered shoulders, and the inner side conical surface of described tapered shoulders is described second axial limiting face.
Preferably, described annular element comprises the first annular element and the second annular element, and the outer arc length of described first annular element is greater than its inner arc length, and the outer arc length of described second annular element is less than its inner arc length; Described toroidal membrane is made up of described first annular element and described second annular element successively alternate close-packed arrays.
Preferably, the quantity of described toroidal membrane is concentric multiple; In adjacent two described toroidal membranes, the inner side of outer field described toroidal membrane, and the outside of the described toroidal membrane of internal layer, be respectively arranged with corresponding axial limiting face, can provide towards the support of described housing high pressure end for described internal layer toroidal membrane; The outside of outermost described toroidal membrane has described first axial limiting face, and the inner side of the described toroidal membrane of innermost layer is described first face of cylinder.
Preferably, the axial limiting face between adjacent two described toroidal membranes is the conical surface.
Preferably, described toroidal membrane comprises outer shroud dividing plate and inner ring dividing plate;
Described annular element in described outer shroud dividing plate is sallop screen and the trapezoidal dividing plate of class, and the outer arc length of described sallop screen is greater than its inner arc length, and the outer arc length of the trapezoidal dividing plate of described class is less than its inner arc length; Described outer shroud dividing plate is made up of described sallop screen and the trapezoidal dividing plate of described class successively alternate close-packed arrays;
The described annular element of described inner ring dividing plate is the first sallop screen, the second sallop screen and the trapezoidal dividing plate of class, described first sallop screen and described second sallop screen are outer arc length and are all greater than inner arc length, and the outer arc length of the trapezoidal dividing plate of described class is less than its inner arc length; Described inner ring dividing plate is made up of described first sallop screen, described second sallop screen and the trapezoidal dividing plate of described class successively alternate close-packed arrays.
Preferably, described position-limit mechanism also comprises auxiliary stopper mechanism, can provide towards the position-limiting action power of described housing low pressure end for described partition.
As can be seen from above-mentioned technical scheme, the collapse type casing float collar that the utility model provides, the partition of its enclosure interior is the shrinkable structure be made up of multiple separating element, that the form of being scattered with fragment is being rushed to shaft bottom by liquid stream when broken leading to, this process can be predicted with controlled, thus eliminate the risk that blocked portion occurs in sleeve pipe, avoid producing great cementing quality accident; On the other hand, the broken logical pressure of fine adjustment can be carried out by the material and diameter changing position-limit mechanism, ensure carrying out smoothly of cementing operation, guarantee the application requirement fully meeting Casing Floating Technology; This programme is widely used in floating casing job and the cementing operation operation of all kinds of Large travel range level.The utility model additionally provides a kind of well cementation assembly applying above-mentioned collapse type casing float collar.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The internal construction schematic diagram of the collapse type casing float collar that Fig. 1 provides for the utility model embodiment;
The fundamental diagram of the collapse type casing float collar that Fig. 2 provides for the utility model embodiment.
Wherein: 1-housing; 2-outer shroud dividing plate, 21-sallop screen, the trapezoidal dividing plate of 22-class; 3-inner ring dividing plate, 31-first sallop screen, 32-second sallop screen, the trapezoidal dividing plate of 33-class; The sliding plug of 4-; 5-shear pin.
Detailed description of the invention
Core of the present utility model is to disclose a kind of collapse type casing float collar, floating casing job can be realized by it, eliminate the risk that blocked portion occurs its internal construction in sleeve pipe simultaneously, and accurately can regulate the broken logical pressure of its internal construction, fully meet the application requirement of Casing Floating Technology.
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1 and Fig. 2, the internal construction schematic diagram of the collapse type casing float collar that Fig. 1 provides for the utility model embodiment; The fundamental diagram of the collapse type casing float collar that Fig. 2 provides for the utility model embodiment.
The collapse type casing float collar that the utility model embodiment provides, its core improvement is, comprises housing 1 and the partition be arranged on wherein and position-limit mechanism; The inner chamber of housing 1 can be divided into two parts by partition vertically, be respectively used to same two ends splicing sleeve coordinate, the high-density medium (as drilling fluid) in the sleeve pipe of one end and the low-density medium (air or low density liquid) in other end sleeve pipe are separated; Position-limit mechanism can provide towards the axial support of housing 1 high-pressure side for partition, with the pressure of support from high-density medium (as drilling fluid) fluid column in the sleeve pipe of one end; Be understandable that, the high-pressure side of housing 1 i.e. itself and one end injected drilling fluid sleeve pipe and is connected, low-pressure end i.e. itself and one end hollowing out or inject low density liquid sleeve pipe and be connected, lower together;
Partition is made up of multiple separating element, and for rear shrinkable structure of disintegrating can be supported at the axial limiting losing position-limit mechanism; When position-limit mechanism provides axial support, partition is as a whole;
The intensity of position-limit mechanism is less than the intensity of partition; So, in pressurization, position-limit mechanism will be destroyed prior to partition, and the partition losing limited support will disintegrate crumple.
As can be seen from above-mentioned technical scheme, the collapse type casing float collar that the utility model embodiment provides, the partition of its housing 1 inside is the shrinkable structure be made up of multiple separating element, that the form of being scattered with fragment is being rushed to shaft bottom by liquid stream when broken leading to, this process can be predicted with controlled, thus eliminate the risk that blocked portion occurs in sleeve pipe, avoid producing great cementing quality accident; On the other hand, the broken logical pressure of fine adjustment can be carried out by the material and diameter changing position-limit mechanism, ensure carrying out smoothly of cementing operation, guarantee the application requirement fully meeting Casing Floating Technology; This programme is widely used in floating casing job and the cementing operation operation of all kinds of Large travel range level.
The concrete structure of partition and position-limit mechanism can be determined according to actual needs.The simplest, partition can for be made up of two separating elements (being preferably half disk spacer), and these two separating elements are combined into a complete circle, identical with the cross section of housing 1 inner chamber, thus realize segregation; Position-limit mechanism can adopt the annular brace being arranged on housing 1 inwall, plays axial limiting effect to above-mentioned partition.Further, between adjacent partitioning unit, or between separating element and housing 1 inwall, hermetically-sealed construction can be set.Those skilled in the art can change accordingly, partition are divided into greater number and other forms of separating element, and such as adopt three, four even more sallop screens, its disintegration crumple mode is also not quite similar; Supporting way radially or netted etc. is designed to for position-limit mechanism, does not repeat them here.
In order to optimize above-mentioned technical scheme further, the partition in the present embodiment is made up of as far as possible many separating elements, and the volume of each separating element is as far as possible little, effectively can avoid blocked portion after disintegration.In the preferred embodiment that this programme provides, separating element comprises toroidal membrane and is arranged on the sliding plug 4 of toroidal membrane center, shown in its structure can see figures.1.and.2;
Toroidal membrane is made up of multiple annular element, and the fitting face between multiple annular element has component radially, so that it moves along respective fitting face radial inward, realizes disintegration crumple; The outside of toroidal membrane has the first axial limiting face, and the inwall of housing 1 is provided with the second axial limiting face for coordinating with the first axial limiting face, can provide towards the support of housing 1 high-pressure side for toroidal membrane; The inner side of toroidal membrane is first face of cylinder;
The outside of sliding plug 4 is second face of cylinder for coordinating with first face of cylinder, can for providing radially limited support outwardly inside above-mentioned toroidal membrane; As shown in the figure, sliding plug 4 is cylindrical-shaped structure;
Position-limit mechanism comprises shear pin 5, and this shear pin 5 can pass sliding first spacing hole of plug 4 and the second spacing hole of toroidal membrane, and the axes normal of the first spacing hole and the second spacing hole is in the axis of housing 1; Said structure can make housing 1 inwall, form airtight entirety between toroidal membrane and sliding plug 4, with this can support from the pressure of high-pressure side sleeve pipe fluid column.
Can see, the partition in the design is made up of multiple separating element, and can be assembled into all-in-one-piece structure by the cooperation of respective shape, then is provided support by position-limit mechanism and maintain.
In the specific embodiment that this programme provides, the first axial limiting face outside toroidal membrane is the conical surface; The inwall of housing 1 is provided with tapered shoulders, and the inner side conical surface of this tapered shoulders is the second above-mentioned axial limiting face.Housing 1 is tubular structure, and two ends are equipped with connecting thread, and tapered shoulders sets within it the middle part of wall, and this conical surface can be coaxial with housing 1.Certainly, axial limiting face can also adopt other modes, is such as positioned at the circular shape of same sphere.
As preferably, annular element comprises the first annular element and the second annular element, and wherein the outer arc length of the first annular element is greater than its inner arc length, and the outer arc length of the second annular element is less than its inner arc length; Toroidal membrane is made up of, shown in its knot can see figures.1.and.2 several first annular element and the second annular element successively alternate close-packed arrays; This structure speciality can make it be free from each other along during respective contact surface radial contraction.Between multiple first annular element, there is interchangeability, between multiple second annular element, there is interchangeability, be convenient to manufacture and assembling maintenance.
In order to optimize above-mentioned technical scheme further, the quantity of toroidal membrane is concentric multiple; In adjacent two toroidal membranes, the inner side of outer field toroidal membrane, and the outside of the toroidal membrane of internal layer, be respectively arranged with corresponding axial limiting face, can provide towards the support of housing 1 high-pressure side for internal layer toroidal membrane; The outside of outermost toroidal membrane has the first above-mentioned axial limiting face, and the inner side of the toroidal membrane of innermost layer is the first above-mentioned face of cylinder.So, partition just can be made up of more separating element, and the volume of each separating element is less, avoids blocked portion in disintegration rear sleeve further.
As preferably, the axial limiting face between adjacent two toroidal membranes is the conical surface.This conical surface can be coaxial with housing 1.Certainly, above-mentioned axial limiting face can also adopt other modes, is such as positioned at the circular shape of same sphere, does not repeat them here.
In the specific embodiment that this programme provides, toroidal membrane comprises outer shroud dividing plate 2 and inner ring dividing plate 3;
Annular element in outer shroud dividing plate 2 is the trapezoidal dividing plate 22 of sallop screen 21 and class, wherein the outer arc length of sallop screen 21 is greater than its inner arc length, the outer arc length of the trapezoidal dividing plate 22 of class is less than its inner arc length, and this structure speciality can make it be free from each other along during respective contact surface radial contraction; Outer shroud dividing plate 2 is made up of several sallop screen 21 and the trapezoidal dividing plate of class 22 successively alternate close-packed arrays; Preferably, the sallop screen 21 forming outer shroud dividing plate 2 is identical with class trapezoidal dividing plate 22 quantity and be all no less than 8; Establish inner conical surface inside the loop configuration of outer shroud dividing plate 2, male cone (strobilus masculinus) is established in outside, is positioned at the tapered shoulders place in the middle part of housing 1 inwall; Outside outer shroud dividing plate 2, male cone (strobilus masculinus) is identical with the tapering of tapered shoulders in the middle part of housing 1 inwall, and this architectural feature can make close contact therebetween;
The annular element of inner ring dividing plate 3 is the first sallop screen 31, second sallop screen 32 and the trapezoidal dividing plate 33 of class, wherein the first sallop screen 31 and the second sallop screen 32 are outer arc length and are all greater than inner arc length, and the outer arc length of the trapezoidal dividing plate 33 of class is less than its inner arc length; Inner ring dividing plate 3 is made up of the first sallop screen 31, second sallop screen 32 and the trapezoidal dividing plate of class 33 successively alternate close-packed arrays; Preferably, the first sallop screen 31, second sallop screen 32 forming inner ring dividing plate 3 is identical with class trapezoidal dividing plate 33 quantity and be all no less than 6; Be the face of cylinder inside the loop configuration of inner ring dividing plate 3, male cone (strobilus masculinus) is established in outside, and it is positioned at the inner conical surface place inside outer shroud dividing plate 2; Inside outer shroud dividing plate 2, inner conical surface is identical with the tapering of male cone (strobilus masculinus) outside inner ring dividing plate 3, and this architectural feature can make close contact therebetween.Sliding plug 4 is cylindrical-shaped structure, is positioned at inner ring dividing plate 3 center, is connected therebetween by shear pin 5 at class trapezoidal dividing plate 33 place.Said structure can make to form airtight entirety between housing 1 inwall, outer shroud dividing plate 2, inner ring dividing plate 3, sliding plug 4, can support upper pressure with this.
Further, the fitting face between the first sallop screen 31 and the second sallop screen 32 is radially.First spacing hole of sliding plug 4 is for being disposed radially, and the second spacing hole of toroidal membrane is radially opened in the inner side of the trapezoidal dividing plate 33 of class, and the shear pin 5 of cylindrical-shaped structure is successively through the first spacing hole and the second spacing hole, and the radial direction along housing 1 is assembled.As preferably, the quantity of shear pin 5 is identical with the quantity of the trapezoidal dividing plate of class 33, and the diametric plane of housing 1 is circumferentially uniform, force structure is more reasonable.
Above-mentioned position-limit mechanism is all for partition provides towards housing 1 high-pressure side axial support.Pressure when normal use from high-pressure side sleeve pipe fluid column can provide towards the position-limiting action power of housing 1 low-pressure end for partition, makes it be fixed in the axial direction.In order to optimize above-mentioned technical scheme further, position-limit mechanism also comprises auxiliary stopper mechanism, can provide towards the position-limiting action power of housing 1 low-pressure end for partition, to avoid its unnecessary moving axially in the processes such as assembling.Concrete, auxiliary stopper mechanism can for being arranged on the annular stop boss of housing 1 inwall, the outer rim of toroidal membrane near housing 1 high-pressure side one side end face is provided with annular stop groove, and it coordinates with annular stop boss and realizes the position-limiting action power of toroidal membrane towards housing 1 low-pressure end.The inner side of toroidal membrane is provided with annular stop boss near housing 1 high-pressure side place, the outer rim of sliding plug 4 near housing 1 high-pressure side one side end face is provided with annular stop groove, and it coordinates with annular stop boss and realizes the position-limiting action power of cunning plug 4 towards housing 1 low-pressure end.Shown in its structure can see figures.1.and.2.When the quantity of toroidal membrane be concentric multiple time, between adjacent two toroidal membranes, there is above-mentioned annular stop groove and annular stop boss.
Below in conjunction with specific works mode, this programme is described further:
When using this device, be connected to by housing 1 and need floating casing section top, the casing section of its underpart is emptied, and the casing section on its top injects drilling fluid, is then transferred in well by whole casing string; Because outer shroud dividing plate 2 is by the tapered shoulders support in the middle part of housing 1 inwall, inner ring dividing plate 3 is by the inner conical surface support inside outer shroud dividing plate 2, and sliding plug 4 is connected with inner ring dividing plate 3 by shear pin 5; Therefore, outer shroud dividing plate 2, inner ring dividing plate 3 and sliding plug 4 can form an entirety, and its top head of liquid of common support, makes the sleeve pipe of its underpart be in the state of emptying all the time, thus lower parts casing pipe is transferred smoothly under buoyancy in horizontal section wellbore; After sleeve pipe is transferred and is put in place, from the slow supercharging of well head, when reaching the pressure of setting, as shown in Figure 2, the shear pin 5 of fixing sliding plug 4 is cut off, and sliding plug 4 is descending and to depart from inner ring dividing plate 3 inner, what eliminate inside to inner ring dividing plate 3 is spacing, first sallop screen 31, second sallop screen 32 of composition inner ring dividing plate 3 and the trapezoidal dividing plate 33 of class glide, simultaneously along respective contact surface radial contraction, until be scattered after leaving the inner conical surface of outer shroud dividing plate 2 completely along inner conical surface inside outer shroud dividing plate 2; Subsequently, the tapered shoulders face downslide also in the middle part of housing 1 inwall of the sallop screen 21 of composition outer shroud dividing plate 2 and the trapezoidal dividing plate 22 of class, simultaneously along respective contact surface radial contraction, until be scattered after leaving the tapered shoulders in the middle part of housing 1 inwall; Now in sleeve pipe, fluid course is got through completely, normally can carry out follow-up well cementing operation.Due to be the form of being scattered with fragment when this programme internal construction is broken logical by the punching of liquid stream to shaft bottom, therefore can not there is blocked portion in sleeve pipe; Because the diameter of shear pin 5 and material all can fine adjustments as required, therefore the broken logical pressure of this programme can accurately control, and there will not be broken and leads to the inaccurate situation of pressure, guarantee the application requirement fully meeting Casing Floating Technology thus.
The utility model embodiment still provides a kind of well cementation assembly, and comprise floating coupling and two sleeve pipes being connected to its two ends, its core improvement is, floating coupling is above-mentioned collapse type casing float collar.
In sum, the collapse type casing float collar that the utility model embodiment provides, comprises housing, outer shroud dividing plate, inner ring dividing plate, sliding plug and shear pin; Housing is tubular structure, and two ends are equipped with connecting thread, is provided with tapered shoulders in the middle part of its inwall; Outer shroud dividing plate is loop configuration, and be made up of several sallop screen and the trapezoidal dividing plate of class successively alternate close-packed arrays, it is positioned at the tapered shoulders place in the middle part of inner walls; Inner ring dividing plate is loop configuration, and be made up of several sallop screen and the trapezoidal dividing plate of class successively alternate close-packed arrays, it is positioned at the inner conical surface place inside outer shroud dividing plate; Sliding plug is cylindrical-shaped structure, is positioned at inner ring dividing plate center and is connected by shear pin; Compared with prior art, this programme can eliminate by collapse type internal construction the risk that blocked portion occurs in sleeve pipe, avoids producing great cementing quality accident; Logical pressure can be regulated brokenly by the material and diameter changing shear pin, ensure carrying out smoothly of cementing operation, guarantee the application requirement fully meeting Casing Floating Technology; Be widely used in floating casing job and the cementing operation operation of all kinds of Large travel range level.The utility model embodiment still provides a kind of well cementation assembly applying above-mentioned collapse type casing float collar.
In this manual, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. a collapse type casing float collar, is characterized in that, comprises housing (1) and the partition be arranged on wherein and position-limit mechanism; The inner chamber of described housing (1) can be divided into two parts by described partition vertically; Described position-limit mechanism can provide towards the axial support of described housing (1) high-pressure side for described partition;
Described partition is made up of multiple separating element, and for rear shrinkable structure of disintegrating can be supported at the axial limiting losing described position-limit mechanism;
The intensity of described position-limit mechanism is less than the intensity of described partition.
2. collapse type casing float collar according to claim 1, is characterized in that, described separating element comprises toroidal membrane and is arranged on the sliding plug (4) of described toroidal membrane center;
Described toroidal membrane is made up of multiple annular element, and the fitting face between multiple described annular element has component radially; The outside of described toroidal membrane has the first axial limiting face, the inwall of described housing (1) is provided with the second axial limiting face for coordinating with described first axial limiting face, can provide towards the support of described housing (1) high-pressure side for described toroidal membrane; The inner side of described toroidal membrane is first face of cylinder;
The outside of described sliding plug (4) is second face of cylinder for coordinating with described first face of cylinder;
Described position-limit mechanism comprises shear pin (5), described shear pin (5) can slide plug first spacing hole of (4) and the second spacing hole of described toroidal membrane through described, and the axes normal of described first spacing hole and described second spacing hole is in the axis of described housing (1).
3. collapse type casing float collar according to claim 2, is characterized in that, the first axial limiting face outside described toroidal membrane is the conical surface; The inwall of described housing (1) is provided with tapered shoulders, and the inner side conical surface of described tapered shoulders is described second axial limiting face.
4. collapse type casing float collar according to claim 2, it is characterized in that, described annular element comprises the first annular element and the second annular element, the outer arc length of described first annular element is greater than its inner arc length, and the outer arc length of described second annular element is less than its inner arc length; Described toroidal membrane is made up of described first annular element and described second annular element successively alternate close-packed arrays.
5. collapse type casing float collar according to claim 2, is characterized in that, the quantity of described toroidal membrane is concentric multiple; In adjacent two described toroidal membranes, the inner side of outer field described toroidal membrane, with the outside of the described toroidal membrane of internal layer, be respectively arranged with corresponding axial limiting face, can provide towards the support of described housing (1) high-pressure side for described internal layer toroidal membrane; The outside of outermost described toroidal membrane has described first axial limiting face, and the inner side of the described toroidal membrane of innermost layer is described first face of cylinder.
6. collapse type casing float collar according to claim 5, is characterized in that, the axial limiting face between adjacent two described toroidal membranes is the conical surface.
7. collapse type casing float collar according to claim 5, is characterized in that, described toroidal membrane comprises outer shroud dividing plate (2) and inner ring dividing plate (3);
Described annular element in described outer shroud dividing plate (2) is sallop screen (21) and the trapezoidal dividing plate of class (22), the outer arc length of described sallop screen (21) is greater than its inner arc length, and the outer arc length of the trapezoidal dividing plate of described class (22) is less than its inner arc length; Described outer shroud dividing plate (2) is made up of described sallop screen (21) and the trapezoidal dividing plate of described class (22) successively alternate close-packed arrays;
The described annular element of described inner ring dividing plate (3) is the first sallop screen (31), the second sallop screen (32) and the trapezoidal dividing plate of class (33), described first sallop screen (31) and described second sallop screen (32) are outer arc length and are all greater than inner arc length, and the outer arc length of the trapezoidal dividing plate of described class (33) is less than its inner arc length; Described inner ring dividing plate (3) is made up of described first sallop screen (31), described second sallop screen (32) and the trapezoidal dividing plate of described class (33) successively alternate close-packed arrays.
8. collapse type casing float collar according to claim 1, is characterized in that, described position-limit mechanism also comprises auxiliary stopper mechanism, can provide towards the position-limiting action power of described housing (1) low-pressure end for described partition.
9. a well cementation assembly, comprise floating coupling and two sleeve pipes being connected to its two ends, it is characterized in that, described floating coupling is the collapse type casing float collar as described in claim 1-8 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520888419.5U CN205100898U (en) | 2015-11-09 | 2015-11-09 | Well cementation subassembly and routed formula sleeve pipe that contracts floats coupling thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520888419.5U CN205100898U (en) | 2015-11-09 | 2015-11-09 | Well cementation subassembly and routed formula sleeve pipe that contracts floats coupling thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205100898U true CN205100898U (en) | 2016-03-23 |
Family
ID=55516685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520888419.5U Withdrawn - After Issue CN205100898U (en) | 2015-11-09 | 2015-11-09 | Well cementation subassembly and routed formula sleeve pipe that contracts floats coupling thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205100898U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677719A (en) * | 2015-11-09 | 2017-05-17 | 中石化石油工程技术服务有限公司 | Well cementing method, well cementing assembly and collapse type sleeve floating coupling thereof |
| CN108425640A (en) * | 2018-02-02 | 2018-08-21 | 中国石油天然气集团有限公司 | Floating coupling for casing |
-
2015
- 2015-11-09 CN CN201520888419.5U patent/CN205100898U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677719A (en) * | 2015-11-09 | 2017-05-17 | 中石化石油工程技术服务有限公司 | Well cementing method, well cementing assembly and collapse type sleeve floating coupling thereof |
| CN106677719B (en) * | 2015-11-09 | 2019-07-16 | 中石化石油工程技术服务有限公司 | A kind of cementing method, well cementation component and its collapse type casing float collar |
| CN108425640A (en) * | 2018-02-02 | 2018-08-21 | 中国石油天然气集团有限公司 | Floating coupling for casing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205100898U (en) | Well cementation subassembly and routed formula sleeve pipe that contracts floats coupling thereof | |
| CN103443394B (en) | Autonomous valve | |
| CN206958030U (en) | A kind of gas-liquid separation device with helical form honeycomb duct and taper collection chamber | |
| CN108138557B (en) | Water control pipe column and automatic inflow control current limiter and inflow control device thereof | |
| CN105641970B (en) | A kind of extraction kettle | |
| CN211851765U (en) | Tension packer | |
| CN106471208B (en) | Hydraulic locking compensation balance valve | |
| CN111206899A (en) | Spring-driven step-by-step axial extrusion throttling device with double rubber cylinders | |
| CN205314933U (en) | Float coupling and use well cementation subassembly, sleeve pipe tubular column of this showy coupling | |
| CN208330208U (en) | The anti-oil well pipe that collapses | |
| CN201567994U (en) | Variable-diameter expansion cone for equal-diameter competed well | |
| CN106677719B (en) | A kind of cementing method, well cementation component and its collapse type casing float collar | |
| CN205297372U (en) | Sleeve pipe floats coupling and uses well cementation subassembly of this coupling | |
| CN105042097B (en) | Novel low noise flow control valve | |
| CN207563602U (en) | A kind of medical engineering pipeline enlarging device | |
| CN203374264U (en) | Three-petal type oil and gas well layering fracture acidification erosion preventing flow divider | |
| CN204640787U (en) | A kind of plastic pipe expanding device | |
| CN208312786U (en) | Throttle valve and the refrigeration system for being equipped with the throttle valve | |
| EP2952751B1 (en) | Fluid pressure cylinder and method of manufacturing the cylinder | |
| CN103901570B (en) | Waveguide and multifiber cable shielding through wall device | |
| CN105822268A (en) | Horizontal well completion pipe string for middle-shallow reservoir | |
| CN202467795U (en) | Water distributor special for separated injection, ball injection and profile control of water injection well | |
| CN106382402B (en) | Oil exploitation regulating valve | |
| CN208502690U (en) | A kind of casing guide | |
| CN205778583U (en) | A kind of horizontal well completion tubular pile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180801 Address after: 100028 Chaoyang District, Beijing Hui Xin Street six, Twelfth level. Co-patentee after: WELL CEMENTATION COMPANY OF SINOPEC ZHONGYUAN PETROLEUM ENGINEERING CO., LTD. Patentee after: SINOPEC OILFIELD SERVICE CORPORATION Co-patentee after: SINOPEC ZHONGYUAN PETROLEUM ENGINEERING CO., LTD. Address before: 100028 Chaoyang District, Beijing Hui Xin Street 6, Twelfth level. Co-patentee before: WELL CEMENTATION COMPANY OF SINOPEC ZHONGYUAN PETROLEUM ENGINEERING CO., LTD. Patentee before: SINOPEC OILFIELD SERVICE CORPORATION |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160323 Effective date of abandoning: 20190716 |