CN106522907A - Salvageable thermal production well pipe string and application method thereof - Google Patents
Salvageable thermal production well pipe string and application method thereof Download PDFInfo
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- CN106522907A CN106522907A CN201510585658.8A CN201510585658A CN106522907A CN 106522907 A CN106522907 A CN 106522907A CN 201510585658 A CN201510585658 A CN 201510585658A CN 106522907 A CN106522907 A CN 106522907A
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- salvageable
- packer
- inner sleeve
- pipe string
- open hole
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Abstract
The invention provides a salvageable thermal production well pipe string and an application method thereof. The salvageable thermal production well pipe string comprises an external pipe string body and an internal pipe string body. The external pipe string body comprises a guiding shoe, a screening pipe, a casing pipe string and a salvageable type packer hanger. The casing pipe string is provided with a salvageable type open hole packer. The salvageable type open hole packer comprises an inner sleeve, a hydraulic cylinder, a rubber barrel and an end ring, wherein the inner sleeve is arranged outside a casing pipe in a sleeving mode, and the hydraulic cylinder, the rubber barrel and the end ring are sequentially arranged on the outer wall of the inner sleeve. The hydraulic cylinder is fixed to the inner sleeve through a seat seal shear pin, and an annular space is formed between the hydraulic cylinder and the inner sleeve in an enclosed mode. An overflowing hole communicating with the annular space is formed in the wall of the casing pipe and the wall of the inner sleeve. The inner sleeve is limited through a melting retainer ring. According to the salvageable thermal production well pipe string and the application method thereof, the salvageable type open hole packer is adopted, the specific application method is provided, and the salvageable type open hole packer and the salvageable type packer hanger can be sealed through one-time ball throwing; the salvageable thermal production well pipe string is used for sealing a non-reservoir; the thermal efficiency is improved during thermal production well steam injection; compared with a thermosensitive packer, the sealing effect is better; and the salvageable thermal production well pipe string is more adaptable to open hole section sealing.
Description
Technical field
The invention belongs to thermal production well completion tool, the completion tubular string of more particularly to a kind of thick oil thermal extraction and its use
Method.
Background technology
Heavy crude heat extraction technology is to increase temperature using steam to reservoir, to reduce the viscosity of viscous crude, improves mobility,
So as to improve exploitation rate and efficiency.One of key difficulties toward stratum heat injection steam are how to reduce vapourss
Loss, is economized on resources, generally, is the mode being engaged using instlated tubular and packer.Heat injection steam
Two bunch tubes are generally with thickened oil recovery, that is to say, that noted into well after vapourss, needed steam injection pipe
Post, being replaced by mining tubular column carries out oil mining.But at present, steam injection tubing string there is also packer be difficult to salvage,
Poorly sealed the problems such as.
In prior art, usually using thermal recovery hanger 1 '+thermal compensator, 2 '+heat-sensitive packer, 3 '+screen casing
4 ' pipe string compound mode, specifically please be as shown in figure 1, heat-sensitive packer 3 ' be arranged on the Open-Hole Section for just going out pipe shoe
It is interior, prevent steam from missed in non-reservoir in a large number, but the operating temperature of heat-sensitive packer 3 ' is at 200 DEG C or so, when
When temperature is relatively low, sealing effectiveness is poor, affects heat transference efficiency.In addition, heat-sensitive packer 3 ' be likely to occur cannot
The problem of deblocking, affects the proposition of whole pipe string.Sealing effectiveness for solving the problems, such as heat-sensitive packer 3 ' is poor,
Scene substitutes heat-sensitive packer using Self-expandable packer sometimes, and sealing effectiveness is relatively more preferable.But due to being heat
Well is adopted, downhole temperature is up to 300 DEG C sometimes, and the temperature resistant capability of Self-expandable packer and lasting seals ability are again
It is difficult to meet field requirement.In addition, using after Self-expandable packer, whole pipe string can not be salvaged.
The content of the invention
For the problems referred to above, the present invention proposes a kind of salvageable thermal recovery well casing string and its using method, and which leads to
Cross invent it is a kind of be provided with can salvaging type open hole packer pipe string, cooperation can salvaging type packing hanger, realize one
Enter under secondary property screen casing string and insulate can salvaging type open hole packer and can salvaging type packing hanger, realize high efficient injection
The purpose of vapour.In addition, the whole pipe string for entering can be disposably salvaged down, to meet the operation needs such as well workover.
It is that up to above-mentioned purpose, the present invention provides a kind of salvageable thermal recovery well casing string, which includes exterior tube string and interior
Portion's pipe string, described exterior tube string include what is be sequentially connected from bottom to top：Guide shoe, screen casing, bunch tube and can
Salvaging type insulates hanger, and being provided with described bunch tube can salvaging type open hole packer；Wherein, it is described
Can salvaging type open hole packer include：The inner sleeve that is sheathed on outside sleeve pipe and set gradually on the outer wall of inner sleeve
Fluid cylinder, packing element and end ring, the fluid cylinder by set shear pin be fixed in put and enclose between fluid cylinder and inner sleeve
There is annular space, be provided with the flowing hole connected with annular space on the wall of sleeve pipe and inner sleeve, the two ends of the inner sleeve are by can melt
Change retainer ring spacing.
Described salvageable thermal recovery well casing string, wherein, is provided with Yi Peng areas in the middle part of the packing element.
Described salvageable thermal recovery well casing string, wherein, described Yi Peng areas include the groove being arranged on packing element
And/or the peripheral region of opening and groove and/or opening.
Described salvageable thermal recovery well casing string, wherein, is provided with shackle member between described end ring and inner sleeve, card
In the embedded inner sleeve of connector part, the clamping groove being engaged with shackle member is provided with the inwall of end ring.
Described salvageable thermal recovery well casing string, wherein, the shackle member is provided with downwards near the upstream end of end ring
Swim inclined inclined-plane.
Described salvageable thermal recovery well casing string, wherein, is provided with deblocking groove on the sleeve outer wall in end ring downstream,
When end ring departs from from shackle member, shackle member can be absorbed in deblocking groove under the downward squeezing action of packing element.
Described salvageable thermal recovery well casing string, wherein, is provided with box cupling on the sleeve outer wall in deblocking groove downstream
Portion.
Described salvageable thermal recovery well casing string, wherein, the annular space includes being not attached to logical upstream annular space with
Lantern is empty, and described flowing hole is connected with downstream annular space, and the fluid cylinder is provided with anti-back in the upper end of upstream annular space
Jump ring.
Described salvageable thermal recovery well casing string, wherein, also including thermal compensator, which is located at described sleeve pipe
On string.
The present invention also provides a kind of using method of salvageable thermal recovery well casing string, and which comprises the following steps：
(1) enter exterior tube string under；
(2) enter inner tube string under：Inner tube string includes what is be sequentially connected from bottom to top：With bunch tube sealing
Receive seat, oil pipe, adapter, can the salvaging type packing running tool of hanger, the feeding drilling tool on top,
It is described receive seat with can salvaging type open hole packer form sealing；
(3) what the envelope that rises was described can salvaging type open hole packer and can salvaging type packing hanger：
After pitching, the circulation port of seat of receiving is blocked, and continuing to build the pressure, set can salvaging type open hole packer and top
Can salvaging type packing hanger, can salvaging type open hole packer and can salvaging type packing hanger set after,
Complete to give up, rise and seat of receiving, whole pipe string realizes latus rectum；
(4) salvage pipe string：The position that can salvage packing hanger is lowered into feeding drilling tool with fishing tool,
Push a predetermined load, then above carry, deblocking can salvaging type packing hanger, carry in continuation, can salvaging type it is naked
The packing element of eye packer is moved downward along sleeve pipe, and when moving to end, packing element loses constraint deblocking, no longer and well
Wall is contacted, and whole pipe string can be taken out from well.
The invention has the beneficial effects as follows：The innovative point of the pipe string be employ it is callable can salvaging type bore hole packing
Device, and provide specific using method, can a pitching just can rise by envelope can salvaging type open hole packer and can
Salvaging type insulates hanger.The present invention can salvaging type open hole packer be used for seal non-reservoir, in thermal production well steam injection
The Shi Tigao thermals efficiency, the sealing effectiveness of relative thermal packer more preferably, more adapt to the sealing of Open-Hole Section.
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 the structural representation of existing thermal recovery well casing string；
Fig. 2 is the structural representation of the exterior tube string according to the present invention；
Fig. 3 be according to the present invention can salvaging type open hole packer original state schematic diagram；
Fig. 4 be according to the present invention can salvaging type open hole packer working state schematic representation；
Fig. 5 is according to the schematic diagram for entering pipe string under the present invention；
Fig. 6 is the schematic diagram of the salvaging pipe string according to the present invention.
Description of reference numerals：100- can salvaging type open hole packer；1- can melt back-up ring；2- retainer rings；3- inner sleeves；
3 '-upstream annular space；3 "-downstream annular space；4- sets shear pin；5- sealing rings；6- anti-back jump rings；7- fluid cylinders；7’-
Flowing hole；8- sealing rings；9- springs；10- packing elements；The first sealing rings of 11-；12- end ring；13- fixture blocks；14-
Second sealing ring；15- sleeve pipes；16- Yi Peng areas；17- unseals groove；18- collar parts；200- can salvaging type packing
Hanger；300- heating power replensihers；400- bunch tubes；500- screen casings；600- guide shoes；700- receives seat；800-
Fishing tool；900- oil pipes；1 '-thermal recovery hanger；2 '-thermal compensator；3 '-heat-sensitive packer；4 '-screen casing.
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.
The present invention is directed utilizing horizontal well technology heavy crude producing, steam injection and exploitation are completed in a well.
First, the present invention provides a kind of salvageable thermal recovery well casing string, and the pipe string can not only meet thermal recovery steam injection need
Will, and disposable salvaging can be realized.
Specifically as shown in Fig. 2 which is the structural representation of the exterior tube string of thermal recovery well casing string.Described exterior tube
String includes what is be sequentially connected from bottom to top：Guide shoe 600, screen casing 500, bunch tube 400, thermal compensator 300
And can salvaging type packing hanger 200, being provided with described bunch tube 400 can salvaging type open hole packer
100.It is described can salvaging type packing hanger 200 be used for hanging whole pipe string, and annular space can be insulated.It is described
Can salvaging type open hole packer 100 be used for insulating non-reservoir Open-Hole Section, reduce heat loss.Described heating power is mended
The length of pipe string elongation when repaying device 300 for adjusting heat injection steam.It should be noted that the thermal compensator
300 position be not limited merely to can salvaging type open hole packer 100 and can salvaging type packing hanger 200 it
Between, in exterior tube string, any position all can install thermal compensator 300 according to demand, or not install heating power benefit
Repay device 300.
Again please as shown in figure 3, can salvaging type open hole packer 100 be arranged on the outer wall of sleeve pipe 15, its bag
Include the inner sleeve 3 being sheathed on outside sleeve pipe 15 and the fluid cylinder 7 set gradually on the outer wall of inner sleeve 3, packing element 10
And end ring 12.It is between fluid cylinder 7 and inner sleeve 3 and is not attached to logical upstream annular space 3 ' and downstream annular space 3 ".
The flowing hole 7 ' that can be connected with downstream annular space is provided with the wall of sleeve pipe 15 and inner sleeve 3, in the upper of flowing hole 7 '
Trip and downstream two ends are provided with sealing ring 8.The fluid cylinder 7 is provided with anti-back jump ring 6 in the upper end of upstream annular space 3 '.
The fluid cylinder 7 is fixed in inner sleeve 3 by the shear pin 4 that sets of trip disposed thereon, set shear pin 4 it is upper,
Downstream two ends are provided with sealing ring 5.
In order to avoid, in the hot environment of down-hole, after packer setting, sleeve pipe 15 is produced under principle of expanding with heat and contracting with cold
The packing that life is moved axially and destroys packing element 10 is acted on.In one particular embodiment of the present invention, by inner sleeve 3
Two ends be provided with the retainer ring 2 being engaged with sleeve pipe 15, be provided between retainer ring 2 and sleeve pipe 15 and can melt
Back-up ring 1.In this case, when packer enters heavy duty service, down-hole high temperature is made positioned at packer both sides
Melted back-up ring 1 melt, axial constraint between sleeve pipe 15 and inner sleeve 3 disappears so that both can send out
Raw relative motion.Sleeve pipe 15 under the influence of the high temperature of down-hole can occur thermal expansion phenomenon and produce axial displacement, by
Relative motion can be carried out between sleeve pipe 15 and inner sleeve 3, it may therefore be assured that packer and open hole wall it
Between geo-stationary, and then ensure packing effect.
In one particular embodiment of the present invention, Yi Peng areas 16 are configured with the middle part of the inwall of packing element 10.
Preferably, Yi Peng areas 16 include the groove being arranged on packing element 10 and/or opening and groove and/or opening
Peripheral region.Preferably, a V-groove can be removed in 10 inner diameter central portion band girdle of packing element, is formed certain
Weak link.In this case, due to defining certain weak link at the middle part of packing element 10, insulate
Device is affected by down-hole hot environment and the effect of seating sealing load ensure that packing element 10 when down-hole sets
Expand near the Yi Peng areas 16 of center, the center and the borehole wall for making packing element 10 is in close contact, and then makes glue
Seal pack effect between cylinder 10 and the borehole wall is preferable.
In one particular embodiment of the present invention, as shown in figure 1,10 both sides of packing element are provided with spring 9, save
The anti-lug structure of 10 shell of packing element, makes packer outer surface isometrical.Thus, it is possible to avoid packer from reclaiming
Colliding with and open hole wall between during operation, affects above carrying for sleeve pipe 15.Wherein, spring 9 can be by sulfuration
Mode is fixed on inside the both sides of packing element 10, but is not limited.
In one particular embodiment of the present invention, shackle member is provided between end ring 12 and inner sleeve 3.Preferably,
Shackle member is partially submerged into the fixture block 13 in inner sleeve 3, is provided with what is be engaged with fixture block 13 on the inwall of end ring 12
Clamping groove (is not indicated in figure).11 He of the first sealing ring is respectively arranged at two ends with the upstream and downstream of fixture block 13
Second sealing ring 14.The inclined-plane of inclined downstream is configured with fixture block 13 near the upstream end of end ring 12, with profit
During removing seal for packer, fixture block 13 is along inclined-plane slip abjection clamping groove.
In one particular embodiment of the present invention, it is recessed that deblocking is provided with 15 outer wall of sleeve pipe in 12 downstream of end ring
Groove 17.When axial constraint between sleeve pipe 15 and packer inner sleeve 3 disappears and above carries sleeve pipe 15, fixture block
A 13 up segment distance, the axial constraint disappearances between fixture block 13 and end ring 12 therewith, end ring 12 is along inclined-plane
Detach from fixture block 13, and move downward under the squeezing action of packing element 10, packing element 10 is unsealed.Then
Fixture block 13 is absorbed in deblocking groove 17 under the downward squeezing action of packing element 10.Further, in end ring 12
The outer wall of sleeve pipe 15 in downstream be provided with collar part 16.Thus, when squeezing between packing element 10 and open hole wall
Distress resolves, packer unit are integrally slid to collar part 16, it is upper carry during sleeve pipe 15 packer with
One of rise reach well head, realize salvage reclaim operation.
Below to the present invention can the specifically used process of salvaging type open hole packer illustrate.
After packer and sleeve pipe 15 reach precalculated position, into sleeve pipe 15 under enter ball seat and the ball that builds the pressure, then
Highly pressurised liquid is injected into sleeve pipe 15 again, start to set.Highly pressurised liquid through flowing hole 7 ' enter fluid cylinder 7 with
Downstream annular space 3 between inner sleeve 3 ".Can after the pressure of the highly pressurised liquid in sleeve pipe 15 increases to a certain extent
Cut off and set shear pin 4 positioned at the upper end of fluid cylinder 7.Fluid cylinder 7 is transported in highly pressurised liquid effect lower edge sleeve pipe 15 downwards
Dynamic, extruding packing element 10 shrinks which, and packing element 10 is easier along sleeve pipe 15 by means of the Yi Peng areas 16 in the middle part of which
Expanded radially, blocks the better of borehole wall annular space.Bleed off pressure after persistently building the pressure for a period of time, packing element 10 is anti-
In the presence of moving back jump ring 6, packing state is kept, completes to set.
After end is set, back-up ring 1 can be melted after a period of time in the hot environment of down-hole and be melted, this
When axial constraint between sleeve pipe 15 and packer inner sleeve 3 disappear, sleeve pipe 15 can be carried out relative to packer
Axial free movement.In deep-well or ultradeep well, the sleeve pipe 15 entered due under is longer, and in down-hole, high temperature affects
Setting of casing 15 can produce very big axial deformation.As free axial direction can be realized between sleeve pipe 15 and packer
Motion, so avoids to destroy the packing effect of packer because 15 deflection of sleeve pipe is excessive, Ke Yishi
The self compensation of 15 length of existing sleeve pipe.
When the downhole operations such as well workover or well-flushing are run into, need by removing seal for packer and together with sleeve pipe 15 to carry
Go out well head.The solution of the present invention can realize that operation is reclaimed in the salvaging of packer.Detailed process is：First, solve
Axial constraint between decannulation 15 and packer inner sleeve 3 simultaneously above carries sleeve pipe 15, up one section therewith of fixture block 13
Distance, the axial constraint between fixture block 13 and end ring 12 disappear, and end ring 12 departs from from fixture block 13 along inclined-plane
Go out, and move downward under the squeezing action of packing element 10, packing element 10 is unsealed.Then fixture block 13 is in packing element 10
It is absorbed under downward squeezing action in deblocking groove 17.Further, in the sleeve pipe 15 in the downstream of end ring 12
Outer wall be provided with collar part 16.Thus, when the extruding force between packing element 10 and open hole wall disappears, packing
Device unit is integrally slid to collar part 16, it is upper carry sleeve pipe 15 during packer reach well head therewith together,
Realize salvaging and reclaim operation.
Secondly, the present invention also provides a kind of using method of salvageable thermal recovery well casing string, described using method
Specifically include following steps：
(1) enter exterior tube string (asking for an interview Fig. 2) under：
Described exterior tube string includes what is be sequentially connected from bottom to top：Guide shoe 600, screen casing 500 and bunch tube 400
And can salvaging type packing hanger 200, on described bunch tube 400 install at least one can salvaging type it is naked
Eye packer 100.Additionally, thermal compensator 300, the position of thermal compensator 300 can also be entered down as needed
Putting can be located at can salvaging type open hole packer 100 and can be certainly, outside between salvaging type packing hanger 200
In pipe string, any position all can install thermal compensator 300 according to demand.It is exterior tube string above.
(2) enter inner tube string (asking for an interview Fig. 5) under：
Under complete exterior tube string recoil elevator, enter inner tube string under starting.Inner tube string includes connecting successively from bottom to top
Connect：Can be with the seat 700 of receiving of the sealing of bunch tube 400, oil pipe 900 or small size drilling tool, adapter
(not being shown in detail in figure), can the salvaging type packing running tool (not being shown in detail in figure) of hanger, the feeding on top
Drilling tool (is not shown in detail in figure).It is described receive seat 700 with can salvaging type open hole packer 100 form sealing.
Wherein, receive outside seat 700 as fluid sealant bowl, there is the seat of receiving that can be sheared inside.
(3) what the envelope that rises was described can salvaging type open hole packer 100 and can salvaging type packing hanger 200：
The described open hole packer salvaged 100 and can salvaging type packing hanger 200 be hydraulic expanding envelope.
After pitching, the circulation port of seat 700 of receiving is blocked, and continuing to build the pressure, set can salvaging type open hole packer 100
With top can salvaging type packing hanger 200.Sealed ball seat 5 is connected to using drilling rod or oil pipe 900 can
Below the running tool of salvaging type packing hanger 200, running tool and drilling rod (or oil pipe), seat 700 of receiving
Between connection screw thread be tightly connected.Can salvaging type packing hanger 200 be connected with special running tool,
Whole lower tube string is sent into design attitude, can salvaging type open hole packer 100 and can salvaging type packing hang
After device 200 sets, complete to give up, rise and seat 700 of receiving, whole lower tube string realizes latus rectum.
Salvageable thermal recovery well casing string provided by the present invention can adapt to room temperature exploitation simultaneously and heat injection steam is exploited
Two kinds of situations.When heat injection steam is exploited, as high temperature makes pipe string axial elongation, the position of general open hole packer
The possible sealing effectiveness for slip occurring, affecting with bore hole is put, therefore can salvaging type open hole packer in of the invention
Devise on 100 and can melt back-up ring 1, when pipe string extends, the sleeve pipe 15 of only pipe string is moved, and packing element 10 is not
It is dynamic, it is to be slidingly sealed between packing element 10 and sleeve pipe 15.
(4) salvage pipe string (asking for an interview Fig. 6)：
The position that can salvage packing hanger 200 is lowered into feeding drilling tool with fishing tool 800, is pushed certain
Load (generally 50kN or so), then above carries, deblocking can salvaging type packing hanger 200, carry in continuation,
Can the packing element 10 of salvaging type open hole packer 100 move downward along sleeve pipe 15, when moving to end, packing element 10
Constraint deblocking is lost, is no longer contacted with the borehole wall.Whole pipe string can be taken out from well.
In sum, the invention has the beneficial effects as follows：The innovative point of the pipe string is to employ callable salvaging
Formula open hole packer 100, and provide specific using method, can a pitching just can rise by envelope can salvaging type
Open hole packer 100 and can salvaging type packing hanger 200.The present invention's can salvaging type open hole packer 100
For sealing non-reservoir, the thermal efficiency is improved in thermal production well steam injection, the sealing effectiveness of relative thermal packer is more preferable,
The sealing of Open-Hole Section is adapted to more.The present invention can salvaging type open hole packer 100 pass through ground and scene try
Test, the function of whole pipe string can reach design requirement.
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 can replace part therein 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 salvageable thermal recovery well casing string, which includes exterior tube string and inner tube string, described exterior tube
String includes what is be sequentially connected from bottom to top：Guide shoe, screen casing, bunch tube and can salvaging type packing hanger, institute
Being provided with the bunch tube stated can salvaging type open hole packer；Characterized in that, described can salvaging type bore hole envelope
Include every device：The inner sleeve being sheathed on outside sleeve pipe and the fluid cylinder set gradually on the outer wall of inner sleeve, packing element and
End ring, the fluid cylinder by set shear pin be fixed in put and between fluid cylinder and inner sleeve, be with annular space, in sleeve pipe
It is provided with the flowing hole connected with annular space with the wall of inner sleeve, the two ends of the inner sleeve are by can melt retainer ring spacing.
2. salvageable thermal recovery well casing string according to claim 1, it is characterised in that the packing element
Middle part is provided with Yi Peng areas.
3. salvageable thermal recovery well casing string according to claim 2, it is characterised in that described is easy to be swollen
Area includes the peripheral region of the groove being arranged on packing element and/or opening and groove and/or opening.
4. salvageable thermal recovery well casing string according to claim 1, it is characterised in that described end ring
Shackle member is provided between inner sleeve, shackle member is partially submerged in inner sleeve, be provided with and shackle member on the inwall of end ring
The clamping groove being engaged.
5. salvageable thermal recovery well casing string according to claim 4, it is characterised in that the shackle member
The inclined-plane of inclined downstream is provided near the upstream end of end ring.
6. salvageable thermal recovery well casing string according to claim 4, it is characterised in that in end ring downstream
Sleeve outer wall be provided with deblocking groove, when end ring departs from from shackle member, shackle member is in the downward extruding of packing element
Can be absorbed under effect in deblocking groove.
7. salvageable thermal recovery well casing string according to claim 6, it is characterised in that in deblocking groove
The sleeve outer wall in downstream is provided with collar part.
8. salvageable thermal recovery well casing string according to claim 1, it is characterised in that the annular space bag
Include and be not attached to logical upstream annular space and downstream annular space, described flowing hole is connected with downstream annular space, the fluid cylinder
In upstream, the upper end of annular space is provided with anti-back jump ring.
9. salvageable thermal recovery well casing string according to any one of claim 1 to 8, it is characterised in that
Also include thermal compensator, which is located on described bunch tube.
10. a kind of user of salvageable thermal recovery well casing string according to any one of claim 1 to 9
Method, it is characterised in that comprise the following steps：
(1) enter exterior tube string under；
(2) enter inner tube string under：Inner tube string includes what is be sequentially connected from bottom to top：With bunch tube sealing
Receive seat, oil pipe, adapter, can the salvaging type packing running tool of hanger, the feeding drilling tool on top,
It is described receive seat with can salvaging type open hole packer form sealing；
(3) what the envelope that rises was described can salvaging type open hole packer and can salvaging type packing hanger：
After pitching, the circulation port of seat of receiving is blocked, and continuing to build the pressure, set can salvaging type open hole packer and top
Can salvaging type packing hanger, can salvaging type open hole packer and can salvaging type packing hanger set after,
Complete to give up, rise and seat of receiving, whole pipe string realizes latus rectum；
(4) salvage pipe string：The position that can salvage packing hanger is lowered into feeding drilling tool with fishing tool,
Push a predetermined load, then above carry, deblocking can salvaging type packing hanger, carry in continuation, can salvaging type it is naked
The packing element of eye packer is moved downward along sleeve pipe, and when moving to end, packing element loses constraint deblocking, no longer and well
Wall is contacted, and whole pipe string can be taken out from well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510585658.8A CN106522907B (en) | 2015-09-15 | 2015-09-15 | Salvageable thermal recovery well casing string and its application method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510585658.8A CN106522907B (en) | 2015-09-15 | 2015-09-15 | Salvageable thermal recovery well casing string and its application method |
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| CN106522907A true CN106522907A (en) | 2017-03-22 |
| CN106522907B CN106522907B (en) | 2019-04-05 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113216920A (en) * | 2020-02-06 | 2021-08-06 | 中国石油天然气股份有限公司 | Fireflood constant temperature switch |
| CN113266289A (en) * | 2021-07-06 | 2021-08-17 | 中海石油(中国)有限公司 | Offshore oil and gas well riser reverse jacking recovery method |
| CN113931592A (en) * | 2021-12-16 | 2022-01-14 | 东营市福利德石油科技开发有限责任公司 | Retrievable horizontal well sand control pipe column salvaging and separating device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113216920A (en) * | 2020-02-06 | 2021-08-06 | 中国石油天然气股份有限公司 | Fireflood constant temperature switch |
| CN113266289A (en) * | 2021-07-06 | 2021-08-17 | 中海石油(中国)有限公司 | Offshore oil and gas well riser reverse jacking recovery method |
| CN113266289B (en) * | 2021-07-06 | 2023-09-01 | 中海石油(中国)有限公司 | Marine oil and gas well riser anti-top recovery method |
| CN113931592A (en) * | 2021-12-16 | 2022-01-14 | 东营市福利德石油科技开发有限责任公司 | Retrievable horizontal well sand control pipe column salvaging and separating device |
| CN113931592B (en) * | 2021-12-16 | 2022-02-22 | 东营市福利德石油科技开发有限责任公司 | Retrievable horizontal well sand control pipe column salvaging and separating device |
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