CN107288573A - Automatic hydraulic expands guard system and its operating method - Google Patents
Automatic hydraulic expands guard system and its operating method Download PDFInfo
- Publication number
- CN107288573A CN107288573A CN201710583927.6A CN201710583927A CN107288573A CN 107288573 A CN107288573 A CN 107288573A CN 201710583927 A CN201710583927 A CN 201710583927A CN 107288573 A CN107288573 A CN 107288573A
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- hydraulic pressure
- guard system
- hydraulic
- expands
- automatic
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- 238000011017 operating method Methods 0.000 title claims description 6
- 230000007246 mechanism Effects 0.000 claims abstract description 34
- 239000012530 fluid Substances 0.000 claims abstract description 23
- 230000008859 change Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 238000010009 beating Methods 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 12
- 238000005553 drilling Methods 0.000 abstract description 5
- 239000003208 petroleum Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 239000003129 oil well Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000237970 Conus <genus> Species 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000008961 swelling 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
- E21B33/12—Packers; Plugs
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The present invention relates to petroleum industry bulged tube technology field, for drilling completion or set is repaiied.Automatic hydraulic expands guard system, and expansion tube mechanism top sets hydraulic pressure applicator, and the mandrel of hydraulic pressure applicator is extended downwardly with expansion cone phase in succession, handicapping flow nozzle on mandrel；The top connection automatic reset mechanism of hydraulic pressure applicator；Described mandrel also upwardly extends and sets seal receptacle in its upper end；The fluid cylinder of hydraulic pressure applicator upwardly extends and constitutes the shell of automatic reset mechanism；Bottom in shell, which sets spring base, middle part, sets limited step, top and sets upper limit step；Limiting plate is set between lower limit step and upper limit step, back-moving spring is installed between limiting plate and spring base；Connection plug is blocked up below limiting plate.The device is provided with automatic reset mechanism on the top of hydraulic pressure applicator, and operation is very convenient, and can avoid pushing the possibility that tubing string causes expansion tube to shift.
Description
Technical field
The present invention relates to petroleum industry drilling completion, well workover technology field, more particularly to a kind of automatic hydraulic expansion tube
System, the operation installation system of the patching tube for drilling technology sleeve pipe, completion casing or as casing damaged well.
Background technology
The Solid expandable Manifold technology for being developed in the nineties in last century has played important in drilling well, completion and well workover technology field
Effect.
Initial bulged tube technology is to promote expansion cone using hydraulic coupling, while being superimposed drilling rod above carrying to expansion cone
Power completes to expand operation.
Chinese patent, application number 201010106783.3, applying date 2010.02.03, " expansion tube assembly, oil well subsidy are applied
Work mechanism and construction method " discloses the device and method that a kind of utilization expansion tube repairs damaged sleeve pipe, and the device is in expansion
The top of pipe sets a set of power cylinder, and expansion cone is set in the bottom of expansion tube, is provided with card again below expansion cone
Detent mechanism is hung, expansion tube is pushed down on the power cylinder top of the device, and the central tube of power cylinder holds downwards card and hangs detent mechanism, leads to
The pulling force for crossing power cylinder pulls up expansion cone and carrys out expansion pipe.It, which blocks extension detent mechanism, can unidirectionally block central tube,
As expansion cone provides a upward thrust, and the demand that the multiple stroke of power cylinder is lifted up can be met again.
The deficiency that above-mentioned bulged tube technology is present is：A, its fluid cylinder reset complex operation are difficult, Ground Operation personnel
Need whether the stroke for first determining whether power cylinder is covered, after power cylinder covers whole strokes, then upper lifting pipe post descends pressure pipe again
Post is pressed in the upper end of expansion tube until power cylinder bottom, and the expansion for carrying out second stroke is then suppressed again；B, in preceding several rows
The stroke of journey, especially first, reset push during, if misoperation, pressurizing load is excessive, may make expansion tube
Displacement downwards, and then influence operation purpose.
The content of the invention
In order to solve the above technical problems, having invented a kind of automatic hydraulic expansion guard system.
To achieve the above object, the present invention is adopted the following technical scheme that：
Automatic hydraulic expands guard system, and expansion tube mechanism top sets hydraulic pressure applicator, the mandrel of hydraulic pressure applicator extend downwardly with
Expansion cone mutually in succession, on described mandrel below hydraulic pressure applicator position handicapping flow nozzle；The top connection of hydraulic pressure applicator
Automatic reset mechanism；Described mandrel also upwardly extends and sets seal receptacle in its upper end, and seal receptacle constitutes the machine of automatically reseting
A part for structure；The fluid cylinder of hydraulic pressure applicator upwardly extends and constitutes the shell of automatic reset mechanism；Bottom in shell
If spring base, middle part set limited step, top and set upper limit step；Limited between lower limit step and upper limit step position
Plate, installs back-moving spring between limiting plate and spring base；Connection plug is blocked up below limiting plate.
Automatic hydraulic expands the operating method of guard system, and its job step is：
A, automatic hydraulic expansion guard system are connected to working string bottom and the predetermined installation site of G.I.H；
B, the top of working string are connected by pipeline with ground hydraulic pump truck；
C, start hydraulic pressure pump truck, to beating hydraulic pressure in working string；
D, ground are shown after the change of pressure no periodic, are above carried working string and are acted pit shaft.
The technological merit of the present invention is that the device is provided with automatic reset mechanism, hydraulic pressure on the top of hydraulic pressure applicator
After journey of being begun a new line in applicator completion one piston can be made to be resetted with mandrel automatically under the promotion of automatic reset mechanism, then entered
Begun a new line journey on row is next, the pump truck on ground is without termination of pumping, and working string is also without above being carried or lowering operation, operation ten
Divide convenient, and can avoid pushing the possibility that tubing string causes expansion tube to shift downwards.
Brief description of the drawings
When considered in conjunction with the accompanying drawings, by referring to following detailed description, can more completely more fully understand the present invention with
And the adjoint advantage of many of which is easily learnt, but accompanying drawing described herein is used for providing a further understanding of the present invention,
The part of the present invention is constituted, schematic description and description of the invention is used to explain the present invention, do not constituted to this hair
Bright improper restriction, wherein：
Fig. 1 is that the automatic hydraulic of the present invention expands the structural principle rough schematic view of guard system.
Fig. 2 is Fig. 1 principle schematic diagram, it is illustrated that the mandrel of hydraulic pressure applicator is up to be completed a stroke plug and block up
State diagram during seal receptacle is blocked.
Fig. 3 is Fig. 1 principle schematic diagram, and the mandrel and limiting plate of hydraulic pressure applicator are together gone downwards to up to lower limit platform
State diagram during rank.
Fig. 4 is Fig. 1 principle schematic diagram, and the limiting plate of hydraulic pressure applicator is up in the presence of back-moving spring to be reached
State diagram during upper limit step.
Fig. 5 is that the automatic hydraulic of the present invention expands a preferred embodiment of guard system.
Fig. 6 is the stifled preferred embodiment with seal receptacle of plug, it is illustrated that the stifled lower surface of plug and seal receptacle upper surface are all
Smooth and parallel plane.
Fig. 7 is the stifled preferred embodiment with seal receptacle of plug, it is illustrated that stifled plug is cylinder, and seal receptacle is cylindrical hole,
Cylinder is engaged with cylindrical hole realizes sealed situation.
Embodiment
Detailed description and technology contents about this invention, coordinate brief description of the drawings as follows, but accompanying drawing only provides reference
With purposes of discussion, not for being any limitation as to this invention.
In the narration explanation of this specification, described upper and lower position relation is identical with the position relationship illustrated in accompanying drawing,
This is also the mutual alignment relation between each component when instrument of the invention is applied in straight well.
As shown in Figure 1, automatic hydraulic expansion guard system includes the expansion tube mechanism 20 that is sequentially arranged from bottom to top, hydraulic pressure and applied
Power device 19 and automatic reset mechanism 18.Expansion tube 14 is not connected with hydraulic pressure applicator 19.
Expansion tube mechanism 20 includes expansion tube 14, expansion cone 15, slips 16 and swelling spring 17.The structure of expansion tube mechanism 20
It is known technology, in Chinese Patent Application No. 201010106783.3, applying date 2010.02.03, " expansion tube assembly, oil well are mended
It is described in detail, repeats no more here in patch construction mechanism and construction method ".
The top of expansion tube mechanism 20 sets hydraulic pressure applicator（19）.Hydraulic pressure applicator is known technology, and it is fluid cylinder and piston
Mechanism, can connect the Multi-stage hydraulic cylinder to be formed and piston machine for one group of cylinder and piston mechanism or multigroup cylinder with piston mechanism
Structure.
The mandrel 13 of the hydraulic pressure applicator of the present invention is extended downwardly with the phase of expansion cone 15 in succession, and described herein being connected is
Finger is connected with the central tube of expansion cone, and can be as shown in FIG. central tube of the mandrel 13 directly as expansion cone.
In hydraulic pressure applicator handicapping flow nozzle in position below 19 22 on described mandrel 13；Set choked flow nozzle purpose be
Pushed at high pressure piston 11 can be formed in hydraulic pressure applicator and mandrel 13 is up, when plug stifled 3 has blocked seal receptacle, is now lived
Plug and mandrel need descending reset, and the hydraulic coupling in hydraulic pressure applicator is at this moment discharged by choked flow nozzle 22.It is resistance in diagram
One preferred embodiment of flow nozzle, choked flow nozzle 22 has been arranged on the lower end of mandrel 13.
The top connection automatic reset mechanism 18 of hydraulic pressure applicator 19；Described mandrel 13 is also upwardly extended and in its upper end
Portion sets seal receptacle 9, and seal receptacle 9 constitutes a part for automatic reset mechanism 18；The fluid cylinder 12 of hydraulic pressure applicator is upwardly extended simultaneously
The shell 21 of automatic reset mechanism 18 is constituted, in an actual embodiment, fluid cylinder 12 is directly mutually fixedly connected with shell 21；
Bottom in shell 21, which sets spring base 10, middle part, sets limited step 4, top and sets upper limit step 1；In lower limit step 4
Limiting plate 2 is set between upper limit step 1, back-moving spring 8 is installed between limiting plate 2 and spring base 10；Below limiting plate 2
Connection plug stifled 3.Connection between limiting plate 2 and plug stifled 3 can be fixed or activity.
Plug stifled 3 is to coordinate realization sealed with seal receptacle 9.
One of as the presently preferred embodiments, described plug stifled 3 is smooth spheroidal, or the bottom of plug stifled 3 is smooth hemispherical,
Correspondingly, described seal receptacle 9 is smooth conical upward opening.As the presently preferred embodiments two, it is as shown in Figure 5, described
The lower end of plug stifled 3 is cone, and the conical surface of cone is shiny surface, correspondingly, and described seal receptacle 9 is that smooth cone is upward
Opening.As the presently preferred embodiments three, as shown in Figure 6, the lower end of described plug stifled 3 is smooth flat, and correspondingly, described is close
It is smooth flat to seal seat 9, and the lower end smooth flat and the smooth flat of seal receptacle 9 of plug stifled 3 be arranged in parallel.As the presently preferred embodiments
Four, as shown in Figure 7, the lower end of described plug stifled 3 is cylinder, and correspondingly, described seal receptacle 9 is cylindrical hole, plug stifled 3
The external diameter of the cylinder of lower end is engaged and sealed with the internal diameter of the cylindrical hole of seal receptacle 9.
In structural principle rough schematic view, gap is depicted between two parts, only represents that two parts can be relative
Motion, if sealing should according to circumstances depending on, between the piston 11 and fluid cylinder 12 such as in figure, represent effect of the piston in hydraulic coupling
Under can be moved up and down in fluid cylinder, in practical structures, sealed hydraulic fluid should be carried out provided with seal between piston and fluid cylinder.
In order to reduce flow resistance, flowing hole 7 is provided with limiting plate 2.In order that piston 11 is up smoothly, in fluid cylinder
12 tops have also opened up outage 5.
Fig. 1~Fig. 4 illustrates the operation principle of apparatus of the present invention.In Fig. 1, during operation, ground pump truck typically using water to
Beat hydraulic pressure in oil pipe, it is descending that water flows through flowing hole 7, enters mandrel from the upper end of mandrel 13, from the entrance fluid cylinder 12 of inlet opening 6.Due to
The choke pressure that choked flow nozzle is produced, makes the pressure rise in fluid cylinder 12, promotes piston 11 and mandrel and drives expansion cone up
Expansion pipe 14, it is final as shown in Fig. 2 seal receptacle 9 withstands plug stifled 3 and forms sealing upwards.At this moment start, automatically reset machine
Pressure rise in the shell 21 of structure 18, and the pressure in fluid cylinder 12 is released from choked flow nozzle 22.As shown in figure 3, elevated hydraulic pressure
Push that dynamic limiting plate 2, plug stifled 3 and mandrel 13 are together descending, while limiting plate 2 have compressed back-moving spring 8, mandrel 13 has driven work
11 descending resets are filled in, the frictional force between expansion cone and expansion tube makes to maintain in the axial direction not between expansion cone and expansion tube
It is dynamic, and slips is disengaged with mandrel, descending stretching expansion cone is bored in mandrel relative expansion.When limiting plate 2 is gone downwards to up to lower limit step 4
When, limiting plate blocks up with plug and is blocked and can not continue traveling downwardly, and hydraulic coupling continues to raise, and promotes mandrel 13 to continue traveling downwardly, and at this moment fills in and blocks up 3
Disengaged with the seal receptacle 9 of mandrel 13, as shown in figure 4, the back-moving spring 8 that have compressed promotes limiting plate 2 and plug stifled 3 to be up to up to upper
At limited step 1, hydraulic pressure applicator 18 and automatic reset mechanism 18 return to job state same as shown in Figure 1, thus
First expansion operation stroke is completed, next expansion operation stroke has then been begun to, has moved in circles, until completing expansion
The expansion operation of pipe.
Fig. 5 is that the concrete structure that apparatus of the present invention are illustrated in a specific embodiment of apparatus of the present invention, figure shows
It is intended to.Top connection 51 is connected with shell 53, and the lower end of top connection 51 is just as upper limit step 1.The bottom of shell 53 is inside
Undergauge simultaneously naturally form lower limit step 57.Limiting plate 52 is mounted with shell 53, axial flowing hole is set on limiting plate 52,
There is an outer surface to be smooth conus portion to plug stifled 54, plug stifled 54 is divided into limiting plate central part.In limiting plate 52 and lower limit
Back-moving spring 55 is set between the step 57 of position.Upper mandrel 58 is nested and sealed with lower limit step 57, and the upper end of upper mandrel 58 is set
The smooth conical bore in surface is used as seal receptacle 56.Top connection 51, limiting plate 52, shell 53, plug stifled 54, back-moving spring 55, sealing
Seat 56 and lower limit step 57 together constitute automatic reset mechanism.
Fluid cylinder 59 is connected with shell 53, the bottom connection fluid cylinder plug 62 of fluid cylinder 59, and the inside of fluid cylinder 59 sets piston 60, living
Plug about 60 each connects on upper mandrel 58 and lower mandrel 63, piston 60 and sets radial direction inlet opening 61.Fluid cylinder 59, piston 60, fluid cylinder
Plug 62, upper mandrel 58 and lower mandrel 63 together constitute hydraulic pressure applicator.It is close in order to form hydraulic pressure inside hydraulic pressure applicator
Envelope, as shown in FIG., coordinates needs sealing part to be equipped with seal in each.
In the upper end of lower mandrel, choked flow nozzle 68 is set.
The connection of the bottom of fluid cylinder plug 62 pushes away and only covers 64, pushes away only to cover 64 bottoms and connect pushing away only joint 65 again.Push away only joint 65 with
Expansion tube 66 together, has no threaded connection by step backup.Lower mandrel 63 is passed down through expansion cone 67 and other clampings are matched somebody with somebody
Part.Expansion tube 66, expansion cone 67 and other clamping accessories together constitute expansion tube mechanism, and expansion tube mechanism is known technology,
In Chinese Patent Application No. 201010106783.3, applying date 2010.02.03, " expansion tube assembly, oil well subsidy construction mechanism
And construction method " in be described in detail, repeat no more here.
The automatic hydraulic of the present invention expands the operating method of guard system, and its job step is：
A, automatic hydraulic expansion guard system are connected to working string bottom and the predetermined installation site of G.I.H；
B, the top of working string are connected by pipeline with ground hydraulic pump truck；
C, start hydraulic pressure pump truck, to beating hydraulic pressure in working string；
D, ground are shown after the change of pressure no periodic, are above carried working string and are acted pit shaft.
In operation, the hydraulic coupling in tubing string can above propose expansion stroke rise with hydraulic pressure applicator, can also be exerted a force in hydraulic pressure
Reduced suddenly in device return stroke, high pressure time segment length, and the low-pressure period is shorter, the change of high-low pressure is in periodically
Occur.When pressure no longer cyclically-varying, illustrate that expansion operation has been completed.
Obviously, those skilled in the art belong to the guarantor of the present invention based on many modifications and variations that spirit of the invention is done
Protect scope.
Claims (9)
1. automatic hydraulic expands guard system, expansion tube mechanism（20）Top sets hydraulic pressure applicator（19）, the mandrel of hydraulic pressure applicator
（13）Extend downwardly and expansion cone（15）Mutually in succession, it is characterised in that described mandrel（13）On in hydraulic pressure applicator（19）With
Bottom installs choked flow nozzle（22）；Hydraulic pressure applicator（19）Top connection automatic reset mechanism（18）；Described mandrel（13）
Also upwardly extend and set seal receptacle in its upper end（9）, seal receptacle（9）Constitute automatic reset mechanism（18）A part；Liquid
Press the fluid cylinder of applicator（12）Upwardly extend and constitute automatic reset mechanism（18）Shell（21）；In shell（21）Under interior
Portion sets spring base（10）, middle part set limited step（4）, top set upper limit step（1）；In lower limit step（4）With the upper limit
Position step（1）Between set limiting plate（2）, in limiting plate（2）With spring base（10）Between back-moving spring is installed（8）；Limiting plate（2）
Below connection plug block up（3）.
2. automatic hydraulic according to claim 1 expands guard system, it is characterised in that described plug is blocked up（3）It is smooth circle
It is spherical, or fill in stifled（3）Bottom be smooth hemispherical, correspondingly, described seal receptacle（9）It is smooth conical upward opening.
3. automatic hydraulic according to claim 1 expands guard system, it is characterised in that described plug is blocked up（3）Lower end be
Cone, the conical surface of cone is shiny surface, correspondingly, described seal receptacle（9）It is smooth conical upward opening.
4. automatic hydraulic according to claim 1 expands guard system, it is characterised in that described plug is blocked up（3）Lower end be
Smooth flat, correspondingly, described seal receptacle（9）It is smooth flat, plug is stifled（3）Lower end smooth flat and seal receptacle（9）'s
Smooth flat be arranged in parallel.
5. automatic hydraulic according to claim 1 expands guard system, it is characterised in that described plug is blocked up（3）Lower end be
Cylinder, correspondingly, described seal receptacle（9）It is cylindrical hole, plug is stifled（3）The external diameter and seal receptacle of the cylinder of lower end（9）
The internal diameter of cylindrical hole be engaged and seal.
6. automatic hydraulic according to claim 1 expands guard system, it is characterised in that described hydraulic pressure applicator（19）It is
Two-stage above fluid cylinder.
7. automatic hydraulic according to claim 1 expands guard system, it is characterised in that described choked flow nozzle（22）It is peace
Mounted in mandrel（13）Lower end.
8. the operating method of guard system is expanded applied to the automatic hydraulic described in claim 1, it is characterised in that in working string
On used automatic hydraulic expand guard system.
9. automatic hydraulic according to claim 8 expands the operating method of guard system, its job step is：
A, automatic hydraulic expansion guard system are connected to working string bottom and the predetermined installation site of G.I.H；
B, the top of working string are connected by pipeline with ground hydraulic pump truck；
C, start hydraulic pressure pump truck, to beating hydraulic pressure in working string；
D, ground are shown after the change of pressure no periodic, are above carried working string and are acted pit shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710583927.6A CN107288573A (en) | 2017-07-18 | 2017-07-18 | Automatic hydraulic expands guard system and its operating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710583927.6A CN107288573A (en) | 2017-07-18 | 2017-07-18 | Automatic hydraulic expands guard system and its operating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107288573A true CN107288573A (en) | 2017-10-24 |
Family
ID=60101008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710583927.6A Pending CN107288573A (en) | 2017-07-18 | 2017-07-18 | Automatic hydraulic expands guard system and its operating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107288573A (en) |
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| CA2810098A1 (en) * | 2010-10-22 | 2012-04-26 | Enventure Global Technology, Llc | Expandable casing patch |
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| CN203531816U (en) * | 2013-09-06 | 2014-04-09 | 西安三环科技开发总公司 | Expansion construction tool for solid expandable pipe |
| CN205172511U (en) * | 2015-10-27 | 2016-04-20 | 中国石油化工股份有限公司 | Expansion pipe cement holds and stays ware |
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2017
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