CN107143304A - Anti- plug floating float collar device and cementing method - Google Patents
Anti- plug floating float collar device and cementing method Download PDFInfo
- Publication number
- CN107143304A CN107143304A CN201710462577.8A CN201710462577A CN107143304A CN 107143304 A CN107143304 A CN 107143304A CN 201710462577 A CN201710462577 A CN 201710462577A CN 107143304 A CN107143304 A CN 107143304A
- Authority
- CN
- China
- Prior art keywords
- plug
- float collar
- kiss
- spring
- floating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007667 floating Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000007759 kiss coating Methods 0.000 claims abstract description 39
- 208000034656 Contusions Diseases 0.000 claims abstract description 22
- 239000011083 cement mortar Substances 0.000 claims description 26
- 238000007789 sealing Methods 0.000 claims description 26
- 239000012530 fluid Substances 0.000 claims description 7
- 239000005060 rubber Substances 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims 1
- 230000000694 effects Effects 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/134—Bridging plugs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Coating Apparatus (AREA)
Abstract
The invention provides a kind of anti-plug floating float collar device and cementing method, the device includes box cupling, float collar housing, the box cupling lower end is connected with float collar housing, valve seat, kiss-coating valve, spring base are provided with the float collar housing, the valve seat is installed in float collar housing, the spring base is connected with valve seat bottom, the kiss-coating valve may be axially movable, the box cupling includes anti-floating part, the anti-part of floating is on the top of box cupling, and the internal diameter of anti-floating part is less than the external diameter of plug and the internal diameter of its top and the bottom.By increasing righting structure, anti-floating structure, bruising coil structures, make the float collar that there is righting plug, anti-plug to float, realize the obvious bruising of plug and reverse effectively cutout function, it is adaptable to which the oil gas horizontal well that well depth is complicated, horizontal segment is longer is used.
Description
Technical field
The invention belongs to oil development cementing tool technical field, and in particular to a kind of anti-plug floating float collar device and solid
Well method.
Background technology
Prior art is used to not play plug righting, the structure of anti-Float upward function inside the casing string of well cementing operation,
And lack plug bruising coil structures, plug bruising effect is not obvious, it has the disadvantage that prior art has bruising not voltage stabilizing, reversely
It can not effectively stop, different length cement plug is stayed in shaft bottom, cause the later stage well logging not production technology problem such as on earth, influence well cementation is applied
Working medium amount.
The content of the invention
The purpose of the present invention is to overcome prior art not enough, by increasing righting structure and valve seat bruising circle knot inside box cupling
Structure, makes the float collar that there is righting plug, anti-plug to float and realize the obvious bruising function of plug, it is adaptable to well depth is complicated,
The longer oil gas horizontal well of horizontal segment is used.
The technical scheme that the present invention is provided is as follows：
Anti- plug floating float collar device, including box cupling, float collar housing, the box cupling lower end are connected with float collar housing, the float collar
Valve seat, kiss-coating valve, spring base are provided with housing, the valve seat is installed in float collar housing, the spring base and valve seat bottom
Connection, the kiss-coating valve may be axially movable, and the box cupling includes anti-floating part, and the anti-part of floating is in the upper of box cupling
Portion, the internal diameter of anti-floating part is less than the external diameter of plug and the internal diameter of its top and the bottom；
The kiss-coating valve includes guide rod and sealing kiss-coating part, and the guide rod is connected with sealing kiss-coating part lower end, described close
Kiss-coating part and valve seat fitted seal are sealed, the lower end of the guide rod passes through and is arranged with bullet on the guide rod hole on spring base, the guide rod
Spring, the lower end of spring is installed on spring base, and spring base side wall is provided with porus excretorius.
The valve seat top is provided with bruising coil structures, and bruising coil structures cylinder two parts connection under upper circular cone is constituted.
The spring base bottom be provided with spring fixed seat, the spring fixed seat be provided with step, the lower spring end with
Step is contacted, and the guide rod hole is on spring fixed seat.
The guide rod of the kiss-coating valve is provided with two-stage ledge structure, and the spring upper end is contacted with two-stage ledge structure,
The sealing kiss-coating partial interior is hard material, and outside is rubber.
The box cupling also includes righting part, and the righting part is cylindrical hollow configuration, and in the middle part of box cupling, internal diameter is small
Internal diameter in the external diameter of plug and its top and the bottom, length is not less than the half of plug length.
The valve seat is provided with seal groove, by sealing ring and float collar housing seal, the valve seat and float collar housing screw thread
Connection.
The float collar housing is connected with box cupling by taper pipe thread.
Present invention also offers a kind of cementing method, using anti-plug floating float collar device, comprise the following steps：
Step 1）Anti- plug floating float collar device is arranged between sleeve pipe, afterwards tripping in casing string, turn on pump circulating fluid, pump
After pressure is stable, insulating liquid is injected, cement mortar is then injected into, cement mortar injection rate, which reaches, is put into plug after design requirement, squeeze into top
Pressurizeed for liquid；
Step 2）Displacement fluid promotes plug, moves downward cement mortar, and kiss-coating valve is in the presence of cement mortar pressure and guide rod
Move downward, compression spring, cement mortar enters float collar housing by the porus excretorius of spring base, afterwards sleeve pipe annular space, it is last real
Existing bruising, cement mortar is all replaced out sleeve pipe, completes well cementation；
Step 3）Cement mortar is all replaced out after sleeve pipe, when cement mortar flows backwards, in the presence of buffer brake, recoil of spring,
Sealing kiss-coating part is moved upwards, so as to promote plug to move upwards, due to being provided with anti-floating part in box cupling, glue can be prevented
Plug is continued up, so as to realize reverse cutout, improves cementing operation quality.
The beneficial effects of the invention are as follows：
This anti-plug floating float collar device that the present invention is provided, by increasing righting structure, anti-floating structure, bruising circle knot
Structure, makes the float collar that there is righting plug, anti-plug to float, realizes the obvious bruising of plug and reverse effectively cutout function, it is adaptable to
The oil gas horizontal well that well depth is complicated, horizontal segment is longer is used.Forward and reverse bearing capacity is high, and sealing property is excellent, it is ensured that ring
The empty unidirectional proper flow of drilling fluid, prevents cement mortar and flows backwards risk, and then improve cementing operation quality.
It is described in further details below in conjunction with accompanying drawing.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is that the present invention uses Principle of Process figure；
Fig. 3 is kiss-coating valve structural representation；
Fig. 4 is spring seat structure schematic diagram；
Fig. 5 is valve seat construction schematic diagram；
Fig. 6 is box cupling structural representation.
In figure：1st, float collar housing；2nd, kiss-coating valve；3rd, spring；4th, spring base；5th, valve seat；6th, box cupling；7th, sealing ring；8、
Guide rod；9th, sealing kiss-coating part；10th, two-stage ledge structure；11st, guide rod hole；12nd, spring fixed seat；13rd, porus excretorius；14th, on preventing
Floating part；15th, bruising coil structures；16th, seal groove；17th, righting part；18th, plug；19th, taper pipe thread.
Embodiment
Embodiment 1：
Present embodiments provide a kind of anti-plug floating float collar device, including box cupling 6, float collar housing 1, the lower end of box cupling 6 with
Float collar housing 1 is connected, and valve seat 5, kiss-coating valve 2, spring base 4 are provided with the float collar housing 1, and the valve seat 5 is installed in float collar
In housing 1, the spring base 4 is connected with the bottom of valve seat 5, and the kiss-coating valve 2 may be axially movable, and the box cupling 6 includes anti-
Floating part 14, the anti-floating part 14 on the top of box cupling 6, the internal diameter of anti-floating part 14 be less than the external diameter of plug 18 with
And its internal diameter of top and the bottom；
The kiss-coating valve 2 includes guide rod 8 and sealing kiss-coating part 9, and the guide rod 8 is connected with the lower end of sealing kiss-coating part 9, institute
Sealing kiss-coating part 9 and the fitted seal of valve seat 5 are stated, the lower end of guide rod 8 passes through the guide rod hole 11 on spring base 4, the guide rod 8
On be arranged with spring 3, the lower end of spring 3 is installed on spring base 4, the side wall of spring base 4 be provided with porus excretorius 13.
This anti-plug floating float collar device is arranged between sleeve joint shackle, in well cementing process, when being pumped into aequum
Cement mortar after be put into plug 18, be pumped into displacement fluid afterwards, displacement fluid promotes plug 18, and then moves downward cement mortar, hang
Glue valve 2 is moved downward in the presence of cement mortar pressure along guide rod 8, opening valve element, compression spring 3, and cement mortar is by spring base 4
Porus excretorius 13 enter float collar housing 1, sleeve pipe annular space afterwards, when realizing bruising（I.e. plug 18 is contacted with kiss-coating valve 2,
Pump pressure can be raised rapidly）Afterwards, now, cement mortar is all replaced out sleeve pipe.Wherein, kiss-coating valve 2 refers to metal or alloy and rubber
Glue casting is integral, and in the present embodiment, the part of guide rod 8 is metal, and sealing kiss-coating part 9 is rubber.
As shown in figure 1, when cement mortar flows backwards, in the presence of buffer brake, the resilience of spring 3 makes sealing kiss-coating part 9
Motion upwards, so as to promote the motion upwards of plug 18, due to being provided with anti-floating part 14 in box cupling 6, can prevent plug 18 from continuing
Motion upwards, as shown in Fig. 2 so as to realize reverse cutout effect, preventing cement mortar and flowing backwards risk, and then improve cementing operation matter
Amount.
Embodiment 2：
On the basis of embodiment 1, a kind of anti-plug floating float collar device is present embodiments provided, the top of valve seat 5 is provided with
Bruising coil structures 15, the bruising coil structures 15 cylinder two parts connection under upper circular cone is constituted.
After cement mortar is all replaced out sleeve pipe, before plug 18 is contacted with kiss-coating valve 2, the conical surface and the bruising circle of plug 18
Structure 15 upper circular cone contact after realize sealing so that pump pressure can raise rapidly, compared in embodiment 1 without bruising coil structures
15 bruising becomes apparent from.Moreover, when cement mortar flows backwards, the motion upwards of sealing kiss-coating part 9 can be upper with bruising coil structures 15
Sealing is realized after circular cone contact, so as to realize reverse cutout effect.
In the present embodiment, the guide rod 8 of the kiss-coating valve 2 be provided with two-stage ledge structure 10, the upper end of spring 3 with
Two-stage ledge structure 10 is contacted, and the inside of sealing kiss-coating part 9 is hard material, and outside is rubber.As shown in Figure 3.Hard
Material is played a supporting role, and outside rubber plays sealing function.
The bottom of spring base 4 is provided with spring fixed seat 12, and the spring fixed seat 12 is provided with step, the spring 3
Lower end is contacted with step, and the guide rod hole 11 is on spring fixed seat 12.As shown in Figure 4.Wherein, spring 3 compresses for cylinder
Spring 3, is processed using superior alloy steel, between spring base 4 and the two-stage step of guide rod 8, plays resilience sealing extension
Glue part 9, realizes reverse cutout effect.
Embodiment 3：
On the basis of embodiment 1 or embodiment 2, a kind of anti-plug floating float collar device, the box cupling 6 are present embodiments provided
Also include righting part 17, the righting part 17 is cylindrical hollow configuration, and positioned at the middle part of box cupling 6, internal diameter is less than plug 18
The internal diameter of external diameter and its top and the bottom, length is not less than the half of the length of plug 18.
The valve seat 5 is provided with seal groove 16, is sealed by sealing ring 7 with float collar housing 1, the valve seat 5 and float collar shell
Body 1 is threadedly coupled.As shown in Figure 5.
As shown in Fig. 2 the centralizing function to plug 18 is that the squeezing action of plug 18 is realized by the wall of box cupling 6.
The float collar housing 1 is connected with box cupling 6 by taper pipe thread 19.Taper pipe thread 19 plays seal pipe string, accelerates spiral shell
The speed that line is screwed in.The structural representation of box cupling 6 is shown in Fig. 6.
The part and structure that above example is not described in detail belong to the well-known components and common structure or conventional of the industry
Means, are not described one by one here.
It is exemplified as above be only to the present invention for example, do not constitute the limitation to protection scope of the present invention, it is all
It is to be belonged to the same or analogous design of the present invention within protection scope of the present invention.
Claims (8)
1. anti-plug floating float collar device, it is characterised in that：Including box cupling（6）, float collar housing（1）, the box cupling（6）Lower end with
Float collar housing（1）Connection, the float collar housing（1）It is interior to be provided with valve seat（5）, kiss-coating valve（2）, spring base（4）, the valve seat
（5）It is installed in float collar housing（1）It is interior, the spring base（4）With valve seat（5）Bottom is connected, the kiss-coating valve（2）Can be vertically
Motion, the box cupling（6）Including anti-floating part（14）, the anti-floating part（14）In box cupling（6）Top, anti-floating portion
Point（14）Internal diameter be less than plug（18）External diameter and its top and the bottom internal diameter；
The kiss-coating valve（2）Including guide rod（8）With sealing kiss-coating part（9）, the guide rod（8）With sealing kiss-coating part（9）
Lower end is connected, the sealing kiss-coating part（9）With valve seat（5）Fitted seal, the guide rod（8）Lower end passes through spring base（4）On
Guide rod hole（11）, the guide rod（8）On be arranged with spring（3）, spring（3）Lower end be installed in spring base（4）On, the bullet
Spring abutment（4）Side wall is provided with porus excretorius（13）.
2. anti-plug floating float collar device according to claim 1, it is characterised in that：The valve seat（5）Top is provided with and touched
Ring pressing construction（15）, the bruising coil structures（15）The connection of cylinder two parts is constituted under upper circular cone.
3. anti-plug floating float collar device according to claim 1, it is characterised in that：The spring base（4）Bottom is provided with
Spring fixed seat（12）, the spring fixed seat（12）It is provided with step, the spring（3）Lower end is contacted with step, described to lead
Rod aperture（11）Located at spring fixed seat（12）On.
4. the anti-plug floating float collar device according to claim any one of 1-3, it is characterised in that：The kiss-coating valve
（2）Guide rod（8）It is provided with two-stage ledge structure（10）, the spring（3）Upper end and two-stage ledge structure（10）Contact, it is described
Seal kiss-coating part（9）Inside is hard material, and outside is rubber.
5. the anti-plug floating float collar device according to claim any one of 1-3, it is characterised in that：The box cupling（6）Also
Including righting part（17）, the righting part（17）For cylindrical hollow configuration, positioned at box cupling（6）Middle part, internal diameter is less than plug
（18）External diameter and its top and the bottom internal diameter, length be not less than plug（18）The half of length.
6. the anti-plug floating float collar device according to claim any one of 1-3, it is characterised in that：The valve seat（5）On
Provided with seal groove（16）, pass through sealing ring（7）With float collar housing（1）Sealing, the valve seat（5）With float collar housing（1）Screw thread connects
Connect.
7. the anti-plug floating float collar device according to claim any one of 1-3, it is characterised in that：The float collar housing
（1）With box cupling（6）Pass through taper pipe thread（19）Connection.
8. a kind of cementing method, the anti-plug floating float collar device described in usage right requirement 1, it is characterised in that including following
Step：
Step 1）Anti- plug floating float collar device is arranged between sleeve pipe, afterwards tripping in casing string, turn on pump circulating fluid, pump
After pressure is stable, insulating liquid is injected, cement mortar is then injected into, cement mortar injection rate, which reaches, is put into plug after design requirement, squeeze into top
Pressurizeed for liquid；
Step 2）Displacement fluid promotes plug（18）, move downward cement mortar, kiss-coating valve（2）In the presence of cement mortar pressure
And guide rod（8）Move downward, compression spring（3）, cement mortar is by spring base（4）Porus excretorius（13）Into float collar housing（1）, it
Enter casing annulus afterwards, finally realize bruising, cement mortar is all replaced out sleeve pipe；
Step 3）Cement mortar is all replaced out after sleeve pipe, when cement mortar flows backwards, in the presence of buffer brake, spring（3）Return
Bullet, makes sealing kiss-coating part（9）Motion upwards, so as to promote plug（18）Motion upwards, due to box cupling（6）It is interior to be floated provided with anti-
Part（14）, plug can be prevented（18）Continue up, so as to realize reverse cutout, improve cementing operation quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710462577.8A CN107143304A (en) | 2017-06-19 | 2017-06-19 | Anti- plug floating float collar device and cementing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710462577.8A CN107143304A (en) | 2017-06-19 | 2017-06-19 | Anti- plug floating float collar device and cementing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107143304A true CN107143304A (en) | 2017-09-08 |
Family
ID=59782586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710462577.8A Pending CN107143304A (en) | 2017-06-19 | 2017-06-19 | Anti- plug floating float collar device and cementing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107143304A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761736A (en) * | 2019-11-11 | 2020-02-07 | 陕西固德石油工程有限公司 | Self-locking type bumping and pressing floating hoop device and method for preventing well cementation rubber plug from floating upwards |
| CN110761737A (en) * | 2019-11-11 | 2020-02-07 | 陕西固德石油工程有限公司 | Self-locking type bumping short joint device and well cementation rubber plug self-locking method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3948322A (en) * | 1975-04-23 | 1976-04-06 | Halliburton Company | Multiple stage cementing tool with inflation packer and methods of use |
| RU2199000C2 (en) * | 2001-04-23 | 2003-02-20 | Открытое акционерное общество "Татнефть" | Method of well stage cementing |
| CN2616672Y (en) * | 2003-04-23 | 2004-05-19 | 四川隆昌华油实业总公司 | Oil-gas well cementation apparatus |
| CN2718216Y (en) * | 2004-08-06 | 2005-08-17 | 张同群 | Impact pressing floating hoop |
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| CN103527138A (en) * | 2013-10-28 | 2014-01-22 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | Float collar and float shoe device special for horizontal well |
| CN103527139A (en) * | 2013-10-28 | 2014-01-22 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | Drillable casing pipe float collar float shoe device |
| CN203547652U (en) * | 2013-10-30 | 2014-04-16 | 中国石油集团渤海钻探工程有限公司 | Float collar and rubber plug assembly for drilling liner cementing |
| CN103742103A (en) * | 2014-01-02 | 2014-04-23 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Double guide rod coercing reset type float collar |
| CN204729052U (en) * | 2015-06-10 | 2015-10-28 | 新疆再兴科苑石油科技有限公司 | Self-locking well cementation seal rubber plug and bruising device |
| CN206972196U (en) * | 2017-06-19 | 2018-02-06 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | Anti- plug floating float collar device |
-
2017
- 2017-06-19 CN CN201710462577.8A patent/CN107143304A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3948322A (en) * | 1975-04-23 | 1976-04-06 | Halliburton Company | Multiple stage cementing tool with inflation packer and methods of use |
| RU2199000C2 (en) * | 2001-04-23 | 2003-02-20 | Открытое акционерное общество "Татнефть" | Method of well stage cementing |
| CN2616672Y (en) * | 2003-04-23 | 2004-05-19 | 四川隆昌华油实业总公司 | Oil-gas well cementation apparatus |
| CN2718216Y (en) * | 2004-08-06 | 2005-08-17 | 张同群 | Impact pressing floating hoop |
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| CN202055797U (en) * | 2011-04-21 | 2011-11-30 | 丹诺(北京)石油技术服务有限公司 | Whole-course self-filling extruding type floating hoop with rubber plug |
| CN203097813U (en) * | 2012-07-16 | 2013-07-31 | 袁淑英 | Flow restricting self-filling float collar for manifold cycles |
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| CN103527139A (en) * | 2013-10-28 | 2014-01-22 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | Drillable casing pipe float collar float shoe device |
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| CN206972196U (en) * | 2017-06-19 | 2018-02-06 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | Anti- plug floating float collar device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761736A (en) * | 2019-11-11 | 2020-02-07 | 陕西固德石油工程有限公司 | Self-locking type bumping and pressing floating hoop device and method for preventing well cementation rubber plug from floating upwards |
| CN110761737A (en) * | 2019-11-11 | 2020-02-07 | 陕西固德石油工程有限公司 | Self-locking type bumping short joint device and well cementation rubber plug self-locking method |
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Application publication date: 20170908 |