CN106555564A - Straight well displacement control homing position type is from grouting floating hoop - Google Patents
Straight well displacement control homing position type is from grouting floating hoop Download PDFInfo
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- CN106555564A CN106555564A CN201510617147.XA CN201510617147A CN106555564A CN 106555564 A CN106555564 A CN 106555564A CN 201510617147 A CN201510617147 A CN 201510617147A CN 106555564 A CN106555564 A CN 106555564A
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- grouting
- ball float
- hole
- retainer ring
- bobbin
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Abstract
The present invention provides a kind of straight well displacement control homing position type from grouting floating hoop, including：Outer tube, retainer ring, shear pin, from grouting bobbin, ball float and ball float seat, retainer ring is fixed in outer tube, and retainer ring has a centre bore, and the lower section of centre bore is one section of bellmouth, and the aperture of bellmouth increases from top to bottom successively；There is through hole along its axial direction from grouting bobbin, and the centre bore of retainer ring is fixed on by shear pin from the upper end of grouting bobbin；Ball float seat is fixed in outer tube and is located at below retainer ring, and ball float is located between ball float seat and retainer ring, in the cavity of outer tube, and when falling from grouting bobbin and ball float rises, ball float can seal described bellmouth.In casing cementing, setting of casing midway does not need drilling fluid charge to the present invention, it is to avoid loses time, and can greatly reduce setting of casing risk；When automatic grouting terminates float collar reset, not by spring supporting, without pitching, available cycles displacement control resets, simple to operate, improves efficiency.
Description
Technical field
The invention belongs to petroleum industry oil gas well cementing operation accessory tool field, is mainly used in straight well well shaft fixing technology.
Background technology
Float collar is the instrument during oil gas well cementing operation installed in casing part, and retainer ring is housed on float collar.It is floating
Hoop is primarily served the purpose of：(1), at the end of cementing the well, prevent plug from continuing traveling downwardly and realize well cementing impact pressure；(2) back pressure
Valve function, that is, prevent in set extratubal fluid sleeve pipe.Traditional float collar in casing cementing, in setting of casing
Way needs drilling fluid charge, and this not only increases workload, loses time, and in sleeve grouting quiescing process again
There is the risk of viscous cutting ferrule pipe.In order to solve this problem, current industry has been developed that various automatic grouting float collars,
Such as the characteristics of an existing patent, its invention managed using spring supporting plastics gear, to build grouting channel,
After entering under sleeve pipe, build the pressure after needing pitching and allow support plastic tube to drop, valve gap top of upspringing under the action of the spring is arrived
The central passage of retainer ring, realizes float collar function.The device is as by spring supporting, in shaft bottom, spring has presence
The situation of failure, the probability of success are relatively low.
The content of the invention
For the problems referred to above, it is an object of the invention to provide a kind of straight well is floating from being in the milk with displacement control homing position type
Hoop, in casing cementing, setting of casing midway does not need drilling fluid charge, it is to avoid loses time, and can subtract significantly
Few setting of casing risk；When automatic grouting terminates float collar reset, it is not necessary to by spring supporting, without pitching, can use
Circulation displacement control resets, and reduces the engineering time, simple to operate, improves efficiency.
It is that, up to above-mentioned purpose, the present invention provides a kind of straight well displacement control homing position type from grouting floating hoop, and which includes：
Outer tube, retainer ring, certainly shear pin, grouting bobbin, ball float and ball float seat, wherein
Described retainer ring is fixed in outer tube, and retainer ring has centre bore, and the lower section of centre bore is one section of taper
Hole, and the aperture of bellmouth increases from top to bottom successively；
Described has through hole along its axial direction from grouting bobbin, and passes through shear pin from the upper end of grouting bobbin
Nail is fixed in the centre bore of retainer ring；
Described ball float seat is fixed in outer tube and positioned at the lower section of retainer ring, described ball float located at ball float seat with
Between retainer ring, when falling from grouting bobbin and ball float rises, ball float can seal described bellmouth.
Described straight well displacement control homing position type from grouting floating hoop, wherein, described bellmouth is arc taper hole,
The inner surface of arc taper hole is engaged with the outer surface of ball float, when ball float rises to bellmouth, ball float and taper
Face seal can be realized in hole, and sealing effectiveness is more preferably.
Described straight well displacement control homing position type from grouting floating hoop, wherein, it is described from grouting bobbin under
Side is additionally provided with least one side opening, and the outer wall from grouting bobbin is connected by described side opening with through hole, if through hole
Lower end accidentally be blocked when, side opening still can ensure that fluid can by from grouting bobbin.
Described straight well displacement control homing position type from grouting floating hoop, wherein, the axis perpendicular of described side opening in
The axle center of through hole.
Described straight well displacement control homing position type from grouting floating hoop, wherein, the axle center out of plumb of described side opening
In the axle center of through hole, the axis direction of such as side opening can or phase identical with flow direction during circulation of drilling fluid
Closely, the effect for enabling flow through can still be met.
Described straight well displacement control homing position type from grouting floating hoop, wherein, the centre bore tool of described retainer ring
There is two stage steps hole, be followed successively by the first hole and the second hole from top to bottom, the first hole and the second hole are straight hole, and
Aperture of the aperture in the first hole less than the second hole；Upper end from grouting bobbin is by being fixed on the stepped hole of retainer ring
The second hole at, and from grouting bobbin upper end it is spacing by the first hole, it is ensured that from grouting bobbin position be fixed
's.Further, since the stepped hole of retainer ring is protruded from from grouting bobbin, therefore can also play from grouting bobbin
The effect of pressure regulator, when discharge capacity is sufficiently large, the certainly first pressure born by grouting bobbin is just very big, can promote
Cut off shear pin so that smoothly fall from grouting bobbin, so as to ball float rises and seal the bellmouth of retainer ring,
Realize float collar function.
Described straight well displacement control homing position type from grouting floating hoop, wherein, the outer wall of described retainer ring is right
Answer the position that shear pin is inserted to be provided with the groove of radial direction, on the one hand save material, be on the other hand easy to shear pin
The insertion of nail.
Described straight well displacement control homing position type from grouting floating hoop, wherein, described outer tube is corresponding to ball float
A step is provided with the position of seat, the lower surface of ball float seat is spacing by step, and ball float seat can also adopt its other party
Formula is fixed on the inwall of outer tube.
Described straight well displacement control homing position type from grouting floating hoop, wherein, also pacify on the inwall of described outer tube
Equipped with bushing, described bushing is located between retainer ring and ball float seat, for protecting the inwall and ball float of outer tube
Outer surface, it is to avoid because long term wear causes float collar to fail.
Described straight well displacement control homing position type from grouting floating hoop, wherein, described ball float adopts hollow-core construction,
To further enhance buoyancy, and save material.
Described straight well displacement control homing position type from grouting floating hoop, wherein, described ball float seat is provided with three
The bore of insertion, during in case ball float smoothly can not leave one of bore, other bore remain in that insertion
State, so as to realize from grouting function.
The invention has the beneficial effects as follows：In casing cementing, setting of casing midway does not need drilling fluid charge, it is to avoid wave
It is time-consuming, while the risk of viscous cutting ferrule pipe can be solved in sleeve pipe quiescing process and be had, can greatly reduce and trap
Manage-style danger, improves setting of casing speed.When automatic grouting terminates float collar and resets, it is not necessary to by spring supporting, without
Pitching, can control using circulation discharge capacity and resets, reduce the engineering time, simple to operate, improve efficiency, and
Low cost of manufacture, easy for installation, good airproof performance will not occur cement mortar and flow backwards accident, safe and reliable.This
It is bright suitable for various diameter setting of casing cementing operations, it can also be used to using other construction operations of float collar.
Description of the drawings
Hereinafter the present invention will be described in more detail based on embodiment refer to the attached drawing.Wherein：
Fig. 1 is one of embodiment of the straight well displacement control homing position type of the invention from grouting floating hoop
Structural representation；
Fig. 2 is the partial enlarged drawing of part A in Fig. 1；
Fig. 2A is Fig. 2 structural representations in a preferred embodiment；
Fig. 3 is the sectional view of section B-B line in Fig. 1；
Fig. 3 A are Fig. 3 structural representations in a preferred embodiment.
Description of reference numerals：1- outer tube；11- steps；2- retainer rings；21- stepped holes；The first holes of 211-；212-
Second hole；213- bellmouths；22- grooves；3- shear pins；4- is from the bobbin that is in the milk；41- through holes；42- side openings；
5- bushings；6- ball floats；7- ball float seats；71- bore.
In the accompanying drawings, identical part uses identical reference.Accompanying drawing is not according to actual ratio.
Specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Referring initially to Fig. 1 and Fig. 2, which is respectively straight well provided by the present invention displacement control homing position type certainly
The partial enlarged drawing of part A in the structural representation and Fig. 1 of one of embodiment of grouting floating hoop.At this
In embodiment, the present invention provides a kind of straight well displacement control homing position type from grouting floating hoop, and which mainly includes：Outward
Cylinder 1, retainer ring 2, certainly shear pin 3, grouting bobbin 4, bushing 5, ball float 6 and ball float seat 7.
Described retainer ring 2 is fixed in outer tube 1, and the center of retainer ring 2 has centre bore, in the present embodiment
In be two stage steps hole 21, be followed successively by the first hole 211 and the second hole 212 from top to bottom, the first hole 211 and the
Two holes 212 are straight hole, and the aperture in the first hole 211 less than the aperture in the second hole 212.Stepped hole 21
Lower section also connects one section of bellmouth 213, and the aperture of bellmouth 213 increases from top to bottom successively.In another reality
Shi Zhong, described bellmouth 213 can be right cone hole, therefore when ball float 6 rises to bellmouth 213, ball float
6 can realize linear sealing with bellmouth 213.(as shown in Figure 2 A), described in a preferred embodiment
Bellmouth 213 can be also engaged with the outer surface of ball float 6 for arc taper hole, the i.e. inner surface of bellmouth 213,
When ball float 6 rises to bellmouth 213, ball float 6 can realize face seal, sealing effectiveness with bellmouth 213
More preferably.
It should be noted that the version of the stepped hole 21 of retainer ring 2 is not limited thereto.
Described has through hole 41 along its axial direction from grouting bobbin 4, passes through for fluid.It is preferable to carry out one
In example, described can also be provided with least one side opening 42, described side opening 42 near lower section from grouting bobbin 4
Outer wall from grouting bobbin 4 is connected with through hole 41, if the lower end of through hole 41 is blocked accidentally, side opening
42 still can ensure that fluid can be by from grouting bobbin 4.Wherein, the axle center of side opening 42 can be perpendicular to through hole
41 axle center, or the axle center of side opening 42 can also be at an angle with the axle center of through hole 41, such as side opening 42
Axis direction can be same or like with flow direction during circulation of drilling fluid, still can meet make fluid lead to
The effect crossed.
The second hole 212 of retainer ring 2 is fixed in the described upper end from grouting bobbin 4 by shear pin 3,
And it is spacing by the first hole 211 from the upper end of grouting bobbin 4, it is ensured that the position from grouting bobbin 4 is fixed.
In a preferred embodiment, the outer wall of described retainer ring 2 is provided with footpath in the position of the correspondence insertion of shear pin 3
To groove 22, on the one hand save material, be on the other hand easy to the insertion of shear pin 3.
Described ball float seat 7 is fixed in outer tube 1, and positioned at the lower section of retainer ring 2 and apart from described support
The certain predeterminable range of ring 2.Ball float 6 is located between ball float seat 7 and retainer ring 2.Specifically, described is outer
Cylinder 1 can be provided with a step 11 at the position corresponding to ball float seat 7, and the lower surface of ball float seat 7 is by step 11
It is spacing.Ball float seat 7 can also be fixed on the inwall of outer tube 1 using other modes.Please as shown in figure 3, institute
The ball float seat 7 stated is provided with the bore 71 of two insertions, in case ball float 6 can not smoothly leave one of bore
When 71, another bore 71 remains in that breakthrough status, so as to realize from grouting function.Described two are passed through
Logical bore 71 can be in line arrangement with the center of ball float seat 7, it is also possible to arrangement at an angle.Additionally,
The quantity of the bore 71 is not limited thereto, and can also be three bore 71 (Fig. 3 A), or more
Bore 71.
In a preferred embodiment, bushing 5, described bushing are also equipped with the inwall of outer tube 1 of the invention
5 are located between retainer ring 2 and ball float seat 7, for protecting the outer surface of the inwall and ball float 6 of outer tube 1,
Avoid causing float collar to fail because of long term wear.Wherein, described bushing 5 can adopt interference fit side with outer tube 1
Formula is attached or other connected modes are attached.Additionally, bushing 5 can adopt politef or stone
The anticorrosive materials such as ink, but be not limited.
Described ball float 6 can adopt nylon or plastic material, can also it is smaller using color density, cause it is floating
The stable material of the shape matching of ball 6, as long as the bellmouth 213 of described retainer ring 2 can effectively be sealed i.e.
Can.Additionally, described ball float 6 can also adopt hollow-core construction, to further enhance buoyancy, and material is saved.
Described retainer ring 2 can be threaded connection with outer tube 1 and is fixed, can also by retainer ring 2 with
Between outer tube 1, casting concrete is fixed, or is fixedly connected mode using other.
The straight well of the present invention is as follows from the operation principle of grouting floating hoop with displacement control homing position type：
Straight well displacement control homing position type provided by the present invention is installed on into bottom sleeve string (figure from grouting floating hoop
In do not show) design attitude, under when entering bunch tube, drilling fluid pass sequentially through ball float seat 7, from grouting bobbin 4 to
Pour in sleeve pipe, realize automatic grouting, it should be noted that now ball float 6 can be risen in the presence of buoyancy
And ball float seat 7 is left, but as now discharge capacity is not big enough, it is not enough to cut off shear pin 3, from grouting cylinder
Pipe 4 is still fixed on retainer ring 2, therefore ball float 6 can be interfered to continue to rise from grouting bobbin 4, ball float 6
The bellmouth 213 of retainer ring 2 cannot be sealed；If there is special circumstances (such as needing situations such as clearing up inside pipe casing)
When needing circulating fluid, drilling fluid can by from grouting bobbin 4 from sleeve pipe to inventionannulus flow, realize drilling well
Liquid circulation (should control the discharge capacity that discharge capacity cuts off pin 3 less than design)；After complete under bunch tube, the row of increasing
Amount circulation, makes discharge capacity reach or surpass design and cuts off 3 discharge capacity of pin, and shear pin 3 is cut off, from grouting bobbin 4
Fall, ball float leans on buoyancy and reverse flow thrust to rise and seal the bellmouth 213 of retainer ring 2, realizes float collar work(
Energy.Explanation is needed exist for, as grouting bobbin 4 is distant apart from ball float seat 7 certainly, therefore outer tube 1
It is interior to avoid ball float 6 and drop with the sufficient space bobbin 4 that is provided from being in the milk, ball float 6 can't be interfered to rise and close
The bellmouth 213 of envelope retainer ring 2.
Further, since the stepped hole 21 of retainer ring 2 is protruded from from grouting bobbin 4, therefore from grouting bobbin 4 also
Pressure regulator can be played a part of, when discharge capacity is sufficiently large, the certainly first pressure born by grouting bobbin 4 is just very
Greatly, can promote to cut off shear pin 3 so that smoothly fall from grouting bobbin 4, so as to ball float 6 rises and close
The bellmouth 213 of envelope retainer ring 2, realizes float collar function.
In sum, the invention has the beneficial effects as follows：In casing cementing, setting of casing midway need not fill drilling well
Liquid, it is to avoid lose time, while the risk of viscous cutting ferrule pipe, Ke Yi great can be solved in sleeve pipe quiescing process and be had
It is big to reduce setting of casing risk, improve setting of casing speed.When automatic grouting terminates float collar reset, it is not necessary to by spring
Support, without pitching, can control using circulation discharge capacity and reset, reduce the engineering time, it is simple to operate, improve
Efficiency, and low cost of manufacture, easy for installation, good airproof performance will not occur cement mortar and flow backwards accident, be one
It is kind safe and reliable from grouting floating hoop.The invention is applied to various straight well setting of casing cementing operations, it can also be used to make
With other construction operations of float collar.
Although by reference to preferred embodiment, invention has been described, without departing from the scope of the present invention
In the case of, various improvement can be carried out to which and part therein can be replaced with equivalent.Especially, only
Otherwise there is structural hazard, the every technical characteristic being previously mentioned in each embodiment can have been combined in any way
Come.The invention is not limited in specific embodiment disclosed herein, but including falling within the scope of the appended claims
All technical schemes.
Claims (10)
1. a kind of straight well displacement control homing position type is from grouting floating hoop, it is characterised in that include：Outer tube, hold
Filler ring, certainly shear pin, grouting bobbin, ball float and ball float seat, wherein,
Described retainer ring is fixed in outer tube, and retainer ring has centre bore, and the lower section of centre bore is one section of taper
Hole, and the aperture of bellmouth increases from top to bottom successively；
Described has through hole along its axial direction from grouting bobbin, and passes through shear pin from the upper end of grouting bobbin
Nail is fixed in the centre bore of retainer ring；
Described ball float seat is fixed in outer tube and positioned at the lower section of retainer ring, described ball float located at ball float seat with
Between retainer ring, when falling from grouting bobbin and ball float rises, ball float can seal described bellmouth.
2. straight well according to claim 1 displacement control homing position type is from grouting floating hoop, it is characterised in that
Described bellmouth is arc taper hole, and the inner surface of arc taper hole is engaged with the outer surface of ball float.
3. straight well according to claim 1 displacement control homing position type is from grouting floating hoop, it is characterised in that
Described is additionally provided with least one side opening near lower section from grouting bobbin, and described side opening is by from the outer of grouting bobbin
Wall is connected with through hole.
4. straight well according to claim 3 displacement control homing position type is from grouting floating hoop, it is characterised in that
The axis perpendicular of described side opening is in the axle center of through hole.
5. straight well according to claim 3 displacement control homing position type is from grouting floating hoop, it is characterised in that
The axle center of described side opening is not orthogonal to the axle center of through hole.
6. straight well according to claim 1 displacement control homing position type is from grouting floating hoop, it is characterised in that
The centre bore of described retainer ring has two stage steps hole, is followed successively by the first hole and the second hole from top to bottom, and first
Hole and the second hole are straight hole, and the aperture in the first hole less than the aperture in the second hole；Lead to from the upper end of grouting bobbin
Cross at the second hole of the stepped hole for being fixed on retainer ring, and it is spacing by the first hole from the upper end of grouting bobbin.
7. straight well according to claim 1 displacement control homing position type is from grouting floating hoop, it is characterised in that
The outer wall of described retainer ring is provided with the groove of radial direction in the position of correspondence shear pin insertion.
8. straight well according to claim 1 displacement control homing position type is from grouting floating hoop, it is characterised in that
Described outer tube is provided with a step at the position corresponding to ball float seat, and the lower surface of ball float seat is spacing by step.
9. straight well according to claim 1 displacement control homing position type is from grouting floating hoop, it is characterised in that
Bushing is also equipped with the inwall of described outer tube, described bushing is located between retainer ring and ball float seat.
10. straight well according to claim 1 displacement control homing position type is from grouting floating hoop, it is characterised in that
Described ball float seat is provided with the bore of three insertions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510617147.XA CN106555564A (en) | 2015-09-24 | 2015-09-24 | Straight well displacement control homing position type is from grouting floating hoop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510617147.XA CN106555564A (en) | 2015-09-24 | 2015-09-24 | Straight well displacement control homing position type is from grouting floating hoop |
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| Publication Number | Publication Date |
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| CN106555564A true CN106555564A (en) | 2017-04-05 |
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ID=58415482
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510617147.XA Pending CN106555564A (en) | 2015-09-24 | 2015-09-24 | Straight well displacement control homing position type is from grouting floating hoop |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119093A (en) * | 2017-12-06 | 2018-06-05 | 中国石油化工股份有限公司华北油气分公司石油工程技术研究院 | Well cementation casing automatic grouting equipment |
| CN113006735A (en) * | 2021-03-22 | 2021-06-22 | 中国石油天然气集团有限公司 | Floating ball type self-grouting floating hoop and continuous uninterrupted casing running method |
| CN113006734A (en) * | 2021-03-22 | 2021-06-22 | 中国石油天然气集团有限公司 | Ball-throwing type floating ball type self-grouting float collar and continuous uninterrupted casing running method |
| CN115324499A (en) * | 2022-10-14 | 2022-11-11 | 东营市源鑫石油科技有限公司 | Automatic grouting floating shoe device for oil well construction |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119093A (en) * | 2017-12-06 | 2018-06-05 | 中国石油化工股份有限公司华北油气分公司石油工程技术研究院 | Well cementation casing automatic grouting equipment |
| CN113006735A (en) * | 2021-03-22 | 2021-06-22 | 中国石油天然气集团有限公司 | Floating ball type self-grouting floating hoop and continuous uninterrupted casing running method |
| CN113006734A (en) * | 2021-03-22 | 2021-06-22 | 中国石油天然气集团有限公司 | Ball-throwing type floating ball type self-grouting float collar and continuous uninterrupted casing running method |
| CN115324499A (en) * | 2022-10-14 | 2022-11-11 | 东营市源鑫石油科技有限公司 | Automatic grouting floating shoe device for oil well construction |
| CN115324499B (en) * | 2022-10-14 | 2022-12-23 | 东营市源鑫石油科技有限公司 | Automatic grouting floating shoe device for oil well construction |
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