CN205532460U - Packer - Google Patents
Packer Download PDFInfo
- Publication number
- CN205532460U CN205532460U CN201620216518.3U CN201620216518U CN205532460U CN 205532460 U CN205532460 U CN 205532460U CN 201620216518 U CN201620216518 U CN 201620216518U CN 205532460 U CN205532460 U CN 205532460U
- Authority
- CN
- China
- Prior art keywords
- packer
- cylinder
- central canal
- stopping means
- packing element
- 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- Withdrawn - After Issue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
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model discloses a packer. It includes: the center tube, the packing element, the packing element cover is established on the center tube, sit and seal the jar, sit a cylinder liner and establish on the center tube, the shear pin can set up and sit between a jar and the center tube, its characterized in that sits and forms the drive cavity between a jar and the center tube, is provided with the reactant that can carry out chemical reaction and produce gas under default temperature in the drive cavity. Can carry out chemical reaction under the predetermined temperature and produce gaseous reactant through being provided with in the drive cavity at packer for packer can sit under the lower condition of temperature and seal, and then has enlarged packer's accommodation, has reduced the notes vapour cost when using packer and has sat and seal the degree of difficulty.
Description
Technical field
This utility model relates to oil field equipment, particularly relates to a kind of packer.
Background technology
High temp. gas injection packer is mainly used in heavy oil wells segmentation steam injection.When heavy oil wells carries out oil producing operation,
Need in well, inject steam and carry out heating in crude oil to improve the mobility of crude oil.In order to prevent in steam injection process
The infiltration of oil reservoir is disturbed by other layers, needs to be placed in producing well high temp. gas injection packer before steam injection operation,
After certain section of oil reservoir of producing well and other layers are isolated by high temp. gas injection packer, start steam injection operation.
High temp. gas injection packer needs to set producing well in use.Setting of high temp. gas injection packer
By steam, the reactant setting in cylinder to be heated, reactant expanded by heating, and then drive set cylinder
Compression sets what packing element was deformed realizing.Concrete, set packing element and produced by the compression of hydraulic cylinder
Radial deformation and then the extruding borehole wall；Set after packing element contacts with Well-wall sealer, on high temp. gas injection packer blocks
Interpenetrating of lower two-layer, it is therefore prevented that other layer interference to oil reservoir, and then other layers are isolated with oil reservoir.
In prior art, the reactant of high temp. gas injection packer is water or ethanol.It is arranged in driving chamber
Water or ethanol expanded by heating and then driving set cylinder compression packing element.Drive set cylinder water or will be at 320 DEG C
The expansion effect of guarantee reactant time above, and then meet normal work the length of high temp. gas injection packer
Phase effectively sets.When the temperature in producing well is less than 320 DEG C, the water in high temp. gas injection packer or ethanol
The insufficient pressure of the saturated vapor produced, and then cause the driving force setting cylinder to be insufficient for the requirement set.
Utility model content
For the problems referred to above, the purpose of this utility model is to provide a kind of packer, and this packer can be less than
Set at 320 DEG C.
To achieve these goals, this utility model provides a kind of packer, including:
Central canal；
Packing element, described packing element is set on described central canal；
Set cylinder, described in set cylinder sleeve and be located on described central canal；
Shear pin, can be arranged on described in set between cylinder and described central canal；
Described setting forms driving chamber between cylinder and described central canal, being provided with in described driving chamber can be in advance
Carry out chemical reaction at a temperature of and if produce the reactant of gas.
Further, described packer has at least two duty, is in the first work at described packer
When making state, described in set cylinder and be connected with described central canal by described shear pin, be in the at described packer
During two duties, described reactant makes described shear pin rupture by the gas that chemical reaction produces, so that
The described cylinder that sets can slide and be compressed described packing element by the most described central canal.
Further, described reactant can decomposite gas by chemical reaction under preset temperature.
Further, described reactant produces the preset temperature of chemical reaction less than 320 DEG C.
Further, described reactant produces the preset temperature of chemical reaction higher than 120 DEG C.
Further, at least one during described reactant includes ammonium hydrogen carbonate, calcium bicarbonate, sodium peroxide.
Further, described in set and on cylinder, be provided with pressure limiting valve, described pressure limiting valve can be in described driving chamber
Pressure more than setting value time open, described pressure limiting valve includes:
Set described in being arranged on cylinder and with the first passage of described driving chamber；
The second channel connected on cylinder and with described first passage is set described in being arranged on；
It is arranged in described first passage and can control described second channel and described driving chamber state
Valve body.
Further, described packer also includes the first stopping means being arranged on described central canal, works as institute
State packer when being in the first duty, described in set cylinder sleeve and be located at outside described first stopping means, work as institute
State packer be in the second duty and described in set the medial wall of cylinder and the lateral wall of described stopping means
During disengaging, described first stopping means can along the radial dilatation of described central canal so that described in set cylinder
End abuts against with described first stopping means.
Further, described packer also includes the second stopping means being arranged on described central canal, works as institute
State packer when being in the first duty, described in set cylinder and be connected with described second stopping means by shear pin
Connect, described second stopping means have when described packer is in the first duty with the described cylinder that sets
The abutting part of end abutment.
Further, described packer includes solving sealing mechanism, sets between described solution sealing mechanism and described central canal
It is equipped with deblocking pin, described first stopping means and described second stopping means to be set in outside described solution sealing mechanism.
Further, described central canal includes that body and branch are arranged on the top connection at described body two ends
And lower contact, described top connection abuts with described packing element, and described driving chamber is formed at described lower contact, institute
State body and described in set between cylinder.
Further, it is provided with between described top connection and described packing element and is set in described external regulation dress
Putting, described adjusting means can move along the axis direction of described central canal relative to described body.
Chemical reaction generation gas can be carried out at a predetermined temperature by being provided with in the driving chamber of packer
Reactant.The gas that reactant produces can drive and set cylinder compression packing element and complete to set so that packer
Can also be able to set in the case of being not up to 320 DEG C in well；Expand the subject range of packer,
Reduce steam injection cost when using packer and set difficulty.
Accompanying drawing explanation
Fig. 1 is structural representation when being in the first duty of the packer in embodiment of the present utility model；
Fig. 2 is structural representation when being in the second duty of the packer in embodiment of the present utility model；
Fig. 3 is the structural representation of the pressure limiting valve of the packer in embodiment of the present utility model.
The figures above illustrates: 1, central canal；11, central canal body；12, top connection；13, lower contact；
14, through hole；2, cylinder is set；21, body；22, lobe；23, chamber is driven；3, packing element；4、
Reactant；5, the first stopping means；51, shear pin；6, the second stopping means；61, abutting part；7, solve
Sealing mechanism；71, deblocking pin；8, pressure limiting valve；81, first passage；82, second channel；83, valve body；
831；Elastic component；832, closeouts；9, cushion rubber；10, regulation ring.
Detailed description of the invention
In conjunction with accompanying drawing and the description of this utility model detailed description of the invention, it is possible to clearly understand this practicality new
The details of type.But, detailed description of the invention of the present utility model described here, it is only used for explaining this practicality
Novel purpose, and can not be understood as by any way is to restriction of the present utility model.At this utility model
Teaching under, technical staff is it is contemplated that based on the most possible deformation of the present utility model, and these all should be by
It is considered as belonging to scope of the present utility model.
As it is shown in figure 1, a kind of packer, including top connection 12, central canal, set cylinder 2, packing element 3, cut
Nail 51, lower contact the 13, first stopping means the 5, second stopping means 6 second stopping means 6, deblocking machine
Structure 7.
Central canal include central canal body 11 and centrally disposed tube body 11 two ends top connection 12 and under
Joint 13.And, top connection 12 and lower contact 13 can be threaded connection with central canal body 11 or
Person is welded to connect.Offering through hole 14 in central canal, extraneous steam can be injected into well by through hole 14
In, and then packer and producing well are heated.
Set cylinder 2 can be set in outside central canal body 11 and between top connection 12 and lower contact 13.
Set cylinder 2 to slide along the axis direction of central canal.Set cylinder 2 when sliding in the axial direction,
The top connection 12 that can be arranged on central canal two ends carries out spacing with lower contact 13.Further, set
Driving chamber 23 it is formed with between cylinder 2 and central canal.Set cylinder 2 include body 21 and be arranged on body 21
The lobe 22 of one end, the diapire of lobe 22 fits with the outer wall of central canal body 11.Body 21
The other end be set in lower contact 13.Set the body 21 of cylinder 2, lobe 22 and lower contact 13
It is collectively forming driving chamber 23.Preferably, set and also set up between lobe 22 and the central canal of cylinder 2
There is cushion rubber 9 to prevent from driving the leakage of chamber 23 pressed gas in the course of the work, and then ensure to drive chamber
The sealing of 23.
Set and between cylinder 2 and central canal, be also provided with shear pin 51, the centrally disposed pipe in one end of shear pin 51
On, the other end of shear pin 51 is arranged on and sets on cylinder 2, and then shear pin 51 can be fixedly installed setting cylinder 2
On central canal.After shear pin 51 is cut off by the active force setting cylinder 2 applying, set cylinder 2 and shear pin
51 disconnect, and setting cylinder 2 can depart from cut in the effect lower slider of the active force driving chamber 23 to produce
Nail 51, and then release setting the fixing of cylinder 2.
In the present embodiment, packing element 3 can be set in outside central canal body 11.One end of packing element 3 with on connect
12 abut against, and the other end of packing element 3 and the one end setting cylinder 2 abut against.Packing element 3 can set cylinder
Produce radial deformation under the compression of 2, and then the extruding borehole wall is to reach the purpose set.Concrete, packing element 3
Can be a longitudinal cross-section be trapezoidal cylinder-like structure, and then set cylinder 2 again and compress the process of packing element 3
In preferably with set cylinder 2 and match.Under packing element 3 uncompressed state, the external diameter of packing element 3 with set cylinder
The external diameter of 2 is equal, and then ensures that packer can enter in producing well down.The internal diameter of packing element 3 and center
The external diameter of tube body 11 matches, so ensure packing element 3 inwall can preferably with the outer wall phase of central canal
Laminating.Preferably, packing element 3 can be elastomeric material or other materials can being deformed under extruding force
Material, the present embodiment not selection to packing element 3 material limits.
The reactant that can carry out chemical reaction generation gas under preset temperature can be provided with in driving chamber 23
4.Concrete, reactant 4 can decomposite gas by chemical reaction under preset temperature and make to drive chamber
Gas pressure in 23 increases, and then driving sets cylinder 2 and compresses packing element 3 to reach to set the purpose of producing well.
Concrete, what reactant 4 typically occurred is the decomposition reaction produced with gas, because driving chamber 23 is
One chamber sealed, reactant 4 is during reaction, and gas can be continuously increased in driving chamber 23,
And then the gas pressure intensity in driving chamber 23 is increased, gas pressure intensity increases to a certain degree enough just drive seat
Envelope cylinder 2 is cut off pin and is gone compression to set packing element 3.
Chemical reaction generation gas can be carried out at a predetermined temperature by being provided with in the driving chamber 23 of packer
The reactant 4 of body so that packer can set in the case of temperature is relatively low, such as can be less than 320
DEG C, and then expand the subject range of packer, reduce steam injection cost when using packer and set
Difficulty.
In a preferred embodiment, reactant 4 produce the preset temperature of chemical reaction can be less than 320 DEG C.
Concrete, carry out decomposition reaction by selecting to be heated below 320 DEG C and produce the chemical agent of gas, enter
And realize packer and can set below 320 DEG C, and reactant 4 produces the preset temperature of chemical reaction
Packer can be this avoid just there occurs when not descending to the producing well section needing to set higher than 120 DEG C
Reaction.Chemical agent includes at least one in ammonium hydrogen carbonate, calcium bicarbonate, sodium peroxide.The present embodiment
The selection to reactant 4 does not limits, and can carry under conditions of being heated as long as reactant 4 meets
The decomposition reaction having expansion all meets the requirement of utility model.
In an optional embodiment, reactant 4 can be ammonium hydrogencarbonate (NH4HCO3).Ammonium hydrogencarbonate exists
Melt when 120 DEG C to 125 DEG C, start to decomposite gas when reaching 150 DEG C, drive chamber 23 interior at gas
Driving under compress packing element 3, and then complete packer setting.Such as following formula, ammonium hydrogencarbonate decompose produce ammonia,
Water and carbon dioxide, it is to packing element 3 and sets cylinder 2 and does not has corrosivity, safe and reliable.
NH4HCO3==Δ==NH3↑+H2O+CO2↑
In an optional embodiment, chemical reagent reactant 4 can be calcium bicarbonate (NaHCO3).Carbon
Acid hydrogen ammonia melts when 250 DEG C, starts to decomposite gas when reaching 270 DEG C, drives chamber 23 interior at gas
Compress packing element 3 under the driving of body, and then complete packer setting.
2NaHCO3==Δ==Na2CO3+H2O+CO2↑
In the present embodiment, packer can have at least two duty, is in the first work at packer
When making state, set cylinder 2 and be connected with central canal 1 by shear pin 51.It is in the second duty at packer
Time, reactant 4 makes shear pin 51 rupture by the gas that chemical reaction produces, can be relatively so that setting cylinder 2
Central canal 1 slides and is compressed packing element 3.Concrete, packer is lowered into needs by steam injection string
The well section set.In steam injection process, the steam injected into well enters being contained in the reactant 4 set in cylinder 2
Row heating, reactant 4 is heated and chemolysis reaction occurs.Reactant 4 original state is solid-state, elder generation of being heated
Become liquid, with thermal expansion and saturated vapor pressure while there is chemolysis generated reactive gas, enter
And produce pressure-driven and set cylinder 2, set and set cylinder 2 to fixing after cylinder 2 is driven the pressure of chamber 23
One shearing force of the pin of one end.After pin is cut off, set cylinder 2 under the effect of the pressure to compression packing element
Slide in the direction of 3, packer and then can be the second duty from the first active state.Excellent at one
In the embodiment of choosing, packer can also include the first stopping means 5 on centrally disposed pipe 1.Such as Fig. 1
Shown in, when packer is in the first duty, the first stopping means 5 is set on central canal 1, sits
Envelope cylinder 2 is set in outside the first stopping means 5.Shear pin 51 can be arranged on and set cylinder 2 and the first stopping means
Between 5, and then can be fixedly installed on setting cylinder 2 on the first stopping means 5.As in figure 2 it is shown, when envelope
When device is in the second duty, shear pin 51 is cut off to its shearing force by setting cylinder 2, sets
Cylinder 2 relieves pin limitation ot it.The lateral wall of the medial wall and stopping means that set cylinder 2 departs from.When
After setting cylinder 2 upward sliding and separating with the first stopping means 5, the first stopping means 5 can be along central canal 1
Radial dilatation.Concrete, the first stopping means 5 can be one and have resilient expansion part, when setting
When cylinder 2 is set on the first stopping means 5, expansion part is inwardly extruded and then limits by the inwall setting cylinder 2
The expansion of expansion part.When the first stopping means 5 is along after the radial dilatation of central canal 1, the first stopping means
The external diameter of 5 is more than or equal to the external diameter setting cylinder 2, and then can offset with the end setting cylinder 2 after setting
Connect, and then limit the reset setting cylinder 2, therefore can maintain and set cylinder 2 and compress the state of packing element 3.
In a preferred embodiment, packer can also include the second spacing dress on centrally disposed pipe 1
Put 6.Second stopping means 6 is set on central canal 1, and is positioned at the second end of the first stopping means 5.
When packer is in the first duty, sets cylinder 2 and be connected with the second stopping means 6 by shear pin 51,
Set cylinder 2 thus can be fixed on the second stopping means 6.Concrete, the second stopping means 6 has
When packer is in the first duty with the abutting part 61 of the end abutment setting cylinder 2, abutting part 61
Can be that a side relative with the end setting cylinder 2 has lobe jaggy, the size of breach and seat
The end of envelope cylinder 2 matches.Second stopping means 6 and then can be when setting cylinder 2 and being in the first duty
Limit it descending；The direction slip setting cylinder 2 toward compression packing element 3 is ensured when the second duty.
In a preferred embodiment, packer can also include solving sealing mechanism 7, solves sealing mechanism 7 and is set in
In lower contact 13, solve and can be provided with deblocking pin between sealing mechanism 7 and central canal 1.First stopping means
5 and second stopping means 6 be set in solution sealing mechanism 7 outside.Concrete, solve sealing mechanism 7 can be one straight
Female connector is located at the deblocking sleeve pipe in lower contact 13, and the first stopping means 5 and the second stopping means 6 can be side by side
It is set on deblocking sleeve pipe.Deblocking pin can be provided with between deblocking sleeve pipe and central canal 1, unseal pin
The centrally disposed pipe in one end 1 on, deblocking pin the other end be arranged on deblocking sleeve pipe on, and then make solve
Big envelope pipe can be fixedly installed on central canal 1 pin is not cut off when.When packer needs deblocking,
Cutting off deblocking pin, deblocking sleeve pipe releases fixing.Deblocking sleeve pipe and sheathed first stopping means 5 He on it
Second stopping means 6 slides along the direction away from packing element 3.Meanwhile, cylinder 2 is set owing to not having spacing dress
The restriction put and under the effect of the elastic force of packing element 3 slide downward, set cylinder 2 and relieve packing element 3
Compression, and then make removing seal for packer.
In a preferred embodiment, as shown in figures 1 and 3, set and be also provided with pressure limiting on cylinder 2
Valve 8, pressure limiting valve 8 can open when the pressure driving the reactant 4 in chamber 23 to produce is more than setting value,
And then ensure that pressure stability in driving chamber 23.Concrete, pressure limiting valve 8 includes being arranged on and sets cylinder
The first passage 81 connected on 2 and with driving chamber 23, first passage 81 is to parallel with central canal 1
Horizontal hole；It is arranged on the second channel 82 setting on cylinder 2 and connecting with first passage 81, second channel
82 set on the body 21 of cylinder 2 and the duct perpendicular with first passage 81 for being arranged on.It is arranged on first
Passage 81 is interior and can control second channel 82 and the valve body 83 driving chamber 23 connected state.Valve body 83 can
To include the elastic component 831 arranged along first passage 81 axis, elastic component 831 can be spring, Yi Jishe
Put in elastic component 831 one end and the closeouts 832 suitable with the connectivity part of first passage 81 and cavity.Tool
Body, closeouts 832 can be steel ball.Steel ball can withstand first passage 81 under the action of the spring with empty
The connectivity part in chamber.Pressure limiting valve 8 can be setting the gas driving the reactant 4 in chamber 23 to produce of cylinder 2
Automatically open up when pressure is excessive, by the gas leak in driving chamber 23.Concrete, when driving chamber 23
In gas pressure more than the elastic force of elastic component 831 time, closeouts 832 under the effect of gas pressure to
The direction of compression spring is moved, and closeouts 832 departs from from the connectivity part of first passage 81 and cavity, drives chamber
Gas in room 23 starts to leak.When the elastic force of gas leak to elastic component 831 is more than driving in chamber 23
During gas pressure, closeouts 832 blocks first passage 81 and cavity under the elastic force effect of elastic component 831
Connectivity part, and then can ensure that set cylinder 2 can be persistently to the constant pressure of packing element 3, it is ensured that packing element 3
Sealing.Further, by adjusting the specification of elastic component 831, and then pressure limiting valve 8 ensure that packing
The pressure set in cylinder 2 of device reaches optimal, is unlikely to that pressure is excessive and pressure packing element 3, make packer without
Opinion can reach optimal sealing effectiveness 200 DEG C or 350 DEG C.
In a preferred embodiment, regulation ring 10 can also be arranged with between top connection 12 and packing element 3.
Threaded engagement can be passed through between regulation ring 10 and central canal 1, and then can move along the axis direction of central canal 1
Dynamic.Can be regulated between packing element 3 and top connection 12 by the regulation regulation ring 10 position on central canal 1
Away from, so adjust packing element 3 set the deformation extent after cylinder 2 compresses.
It should be understood that above description is to illustrate rather than to limit.On reading
Stating description, those skilled in the art are come by the many embodiments outside the example provided and many application
Say and all will be apparent from.Therefore, the scope of this teaching should not determine with reference to foregoing description, but
Should determine with reference to the four corner of the equivalent that claims and these claim are had.
Include that the disclosure of patent application and bulletin is all passed through with reference to combining for comprehensive purpose, all articles and reference
In this article.Any aspect omitting theme disclosed herein in aforementioned claim is not intended to abandon
This body matter, also should not be considered as utility model people and this theme is not thought of as disclosed utility model
A part for theme.
Claims (12)
1. a packer, including:
Central canal；
Packing element, described packing element is set on described central canal；
Set cylinder, described in set cylinder sleeve and be located on described central canal；
Shear pin, can be arranged on described in set between cylinder and described central canal；
It is characterized in that, described in set between cylinder and described central canal formed drive chamber, in described driving chamber
It is provided with the reactant that can carry out chemical reaction generation gas under preset temperature.
Packer the most according to claim 1, it is characterised in that described packer has at least two
Duty, when described packer is in the first duty, described in set cylinder by described shear pin and institute
Stating central canal to connect, when described packer is in the second duty, described reactant passes through chemical reaction
Produce gas make described shear pin rupture so that described in set cylinder can the most described central canal slip and to institute
State packing element to be compressed.
Packer the most according to claim 1, it is characterised in that described reactant can be at preset temperature
Under decomposite gas by chemical reaction.
Packer the most according to claim 3, it is characterised in that described reactant produces chemical reaction
Preset temperature less than 320 DEG C.
Packer the most according to claim 4, it is characterised in that described reactant produces chemical reaction
Preset temperature higher than 120 DEG C.
Packer the most according to claim 3, it is characterised in that described reactant include ammonium hydrogen carbonate,
At least one in calcium bicarbonate, sodium peroxide.
Packer the most according to claim 1, it is characterised in that described in set and on cylinder, be provided with pressure limiting
Valve, described pressure limiting valve can the pressure in described driving chamber more than setting value time open, described pressure limiting valve bag
Include:
Set described in being arranged on cylinder and with the first passage of described driving chamber；
The second channel connected on cylinder and with described first passage is set described in being arranged on；
It is arranged in described first passage and can control described second channel and described driving chamber state
Valve body.
Packer the most according to claim 1, it is characterised in that described packer also includes being arranged on
The first stopping means on described central canal, when described packer is in the first duty, described in set
Cylinder sleeve is located at outside described first stopping means, when described packer be in the second duty and described in set
When the lateral wall of the medial wall of cylinder and described stopping means departs from, described first stopping means can be along described center
The radial dilatation of pipe so that described in set the end of cylinder and abut against with described first stopping means.
Packer the most according to claim 8, it is characterised in that described packer also includes being arranged on
The second stopping means on described central canal, when described packer is in the first duty, described in set
Cylinder is connected with described second stopping means by shear pin, and described second stopping means has when described packer
With the abutting part of the described end abutment setting cylinder when being in the first duty.
Packer the most according to claim 9, it is characterised in that described packer includes solving sealing mechanism,
Deblocking pin, described first stopping means and described it is provided with between described solution sealing mechanism and described central canal
Two stopping means are set in outside described solution sealing mechanism.
11. packers according to claim 1, it is characterised in that described central canal includes that central canal is originally
Body and branch are arranged on top connection and the lower contact at described body two ends, described top connection and described packing element
Abut, described driving chamber be formed at described lower contact, described central canal body and described in set between cylinder.
12. packers according to claim 11, it is characterised in that described top connection and described packing element
Between be provided with and be set in described external adjusting means, described adjusting means can the most described body along institute
The axis direction stating central canal moves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620216518.3U CN205532460U (en) | 2016-03-21 | 2016-03-21 | Packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620216518.3U CN205532460U (en) | 2016-03-21 | 2016-03-21 | Packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205532460U true CN205532460U (en) | 2016-08-31 |
Family
ID=56783312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620216518.3U Withdrawn - After Issue CN205532460U (en) | 2016-03-21 | 2016-03-21 | Packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205532460U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105672939A (en) * | 2016-03-21 | 2016-06-15 | 中国石油天然气股份有限公司 | Packer |
| CN108505965A (en) * | 2018-03-23 | 2018-09-07 | 中煤科工集团西安研究院有限公司 | One kind suppressing desealed hydraulic expansion packer and solution encapsulation method |
-
2016
- 2016-03-21 CN CN201620216518.3U patent/CN205532460U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105672939A (en) * | 2016-03-21 | 2016-06-15 | 中国石油天然气股份有限公司 | Packer |
| CN105672939B (en) * | 2016-03-21 | 2018-05-04 | 中国石油天然气股份有限公司 | Packer |
| CN108505965A (en) * | 2018-03-23 | 2018-09-07 | 中煤科工集团西安研究院有限公司 | One kind suppressing desealed hydraulic expansion packer and solution encapsulation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102027189B (en) | Method and system for anchoring and isolating wellbore | |
| CN105672939A (en) | Packer | |
| CN205532460U (en) | Packer | |
| US10161232B2 (en) | Lift valve with bellow hydraulic protection and chatter reduction | |
| CN108386157A (en) | A kind of piston pressure open-type sliding sleeve switch and hydraulic fracturing construction method | |
| CN206769867U (en) | A kind of fill-type external packer of pipe | |
| CN104088599A (en) | Expansion bridge blinding method for outer packer of cement paste filled pipe | |
| CN105672934B (en) | The closed Anticreep packer of hydraulic cylinder-type | |
| AU767191B2 (en) | Downhole tool with thermal compensation | |
| CN203347736U (en) | Water-injection packer capable of being subjected to deblocking step by step | |
| CN104563953A (en) | Double-layer steel pipe expansion type pipe external casing packer | |
| CN201730583U (en) | Thermosensitive metal expanding packer | |
| EP2133509A1 (en) | Open hole packer and seal | |
| CN107476789B (en) | Injection and production integrated pump and method of linkage packer | |
| CN204627520U (en) | Packer | |
| US11428065B2 (en) | Borehole wall resistance increasing apparatus for improving energy utilization rate of injection gas | |
| CN203570293U (en) | Locked slide sleeve seat | |
| CN204266981U (en) | The airtight Anticreep packer of a kind of hydraulic cylinder-type | |
| CN110145274A (en) | A kind of controllable K341 inflatable packer | |
| CN201953365U (en) | Underground steam injection, sealing, heat insulation and compensation integrated device | |
| CN207739982U (en) | One kind can unseal big divergence ratio packer | |
| CN206158664U (en) | Meticulous omission of examination hourglass packer of looking for is opened to expanding pressure differential | |
| CN204113251U (en) | Air injection auxiliary steam flow string | |
| CN108086938A (en) | A kind of packer | |
| CN204436308U (en) | High pressure self-seal well sealing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160831 Effective date of abandoning: 20180504 |
|
| AV01 | Patent right actively abandoned |