CN109139099A - A kind of filling, sand control, steam injection integrated apparatus and its operational method - Google Patents
A kind of filling, sand control, steam injection integrated apparatus and its operational method Download PDFInfo
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- CN109139099A CN109139099A CN201710504165.6A CN201710504165A CN109139099A CN 109139099 A CN109139099 A CN 109139099A CN 201710504165 A CN201710504165 A CN 201710504165A CN 109139099 A CN109139099 A CN 109139099A
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- filling
- tube
- integrated apparatus
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- central tube
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- 238000011049 filling Methods 0.000 title claims abstract description 67
- 239000004576 sand Substances 0.000 title claims abstract description 48
- 238000010793 Steam injection (oil industry) Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 85
- 238000012856 packing Methods 0.000 claims description 15
- 238000011144 upstream manufacturing Methods 0.000 claims description 15
- 239000012530 fluid Substances 0.000 claims description 14
- 238000005406 washing Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 10
- 238000011010 flushing procedure Methods 0.000 claims description 6
- 238000004873 anchoring Methods 0.000 claims description 5
- 206010055018 Gingival cyst Diseases 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 210000004907 gland Anatomy 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 3
- 230000002045 lasting effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
-
- 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
-
- 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
- E21B33/127—Packers; Plugs with inflatable sleeve
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The present invention relates to oil-gas exploration, development technique field, in particular to a kind of filling, sand control, steam injection integrated apparatus.The invention further relates to the operational methods for using this filling, sand control, the progress operation of steam injection integrated apparatus.A kind of filling provided by the invention, sand control, steam injection integrated apparatus, including filling inner tube, filling outer tube, the first sealing unit and the second sealing unit；For the present invention by filling, the integrated design of sand control, gas filling device, realizing a set of tubing string can be carried out filling, sand control and steam injection operation, not only simplifies process, reduces construction period and operating cost, and in turn avoids the generation of complex situations；Secondly, pass through being equipped with for the first sealing unit and the second sealing unit, efficiently solve the pit shaft sealing problem during filling, sand control, more round steam injections, ensure that can keep sealing for a long time during filling, sand control and more round steam soaks, have lasting, efficient sealing performance.
Description
Technical field
The present invention relates to oil-gas exploration, development technique field, in particular to a kind of filling, sand control, steam injection integrated apparatus.
The invention further relates to the operational methods for using this filling, sand control, the progress operation of steam injection integrated apparatus.
Background technique
In oilfield exploitation procedure, viscous crude resource is as one of oil field development valuable source, due to viscosity of crude
It is higher, it is generally exploited by the way of heat extraction by steam injection, to ensure that pit shaft is safe, long-acting and steam injection quality, needs effective well
Cylinder packing sealing；Simultaneously because most HEAVY OIL RESERVOIRs is loose, it is easy to shake out, it is anti-needs to carry out filling before steam injection thermal recovery
Sand operation.Therefore, pit shaft packing sealing both needs to meet 25MPa or more high pressure sealing under room temperature, to realize that high-pressure extrusion fills
Sand control；Meet the packing sealing of high temperature and pressure steam injection again.
In the prior art, it generallys use thermal packer and carries out pit shaft packing sealing, thermal packer is hot fluid injection
The important composition component of tubing string, effect are oil jacket annulus during heated fluid injection more than oil-separating layer, prevent high temperature
The annular space of fluid sleeve pipe and instlated tubular composition to reach the heat loss for reducing pit shaft, and protects production string
Purpose.Terminate in hot-fluid injection, go in oil recovery process, packer still is able to sealing function.Thermal production well insulates at present
Device uses the design concept of conventional packer, due to steam injecting temperature height, to ensure pit shaft safety and steam injection quality and realizing
Under high temperature and pressure to pit shaft realize insulate, the underground sealing drum intensity used is relatively high, have high temperature do not soften, high pressure it is indeformable
The characteristics of, it is difficult to since this performance of sealing drum also causes this conventional packer to exist under the limited wellbore conditions of size
The problem of compression is set；Normal temperature high voltage seal request when filling anti-sand cannot effectively be met, sand card pipe when leading to filling anti-sand
Column, and cause heavy repair task.
On the other hand, thermal recovery packing tool usually used at present, although being able to satisfy the requirement of thermal production well filling anti-sand technique,
But in steam injection, seal failure situation easily occurs, is not able to satisfy the high temperature and pressure seal request of more round steam injections and production, infuses
When vapour, packing tool is vulnerable, to ensure steam injection safety, it usually needs tripping in bridge plug and close slotting, progress annular space sealing again, both
It increases flow chart and increases operating cost again, also, repeatedly operation influences thermal production well steam injection exploitation effect again, increases peace
Full hidden danger.
Summary of the invention
For above-mentioned technical problem in the presence of the prior art, the invention proposes a kind of filling, sand control, steam injection integrations
Device and its operational method.It can not only realize the integrated construction of filling, sand control and steam injection, and can satisfy and filling
It fills out, the long-term seal during sand control and more round steam soaks, has both saved process, in turn ensured construction effect.
According to the first aspect of the invention, a kind of filling, sand control, steam injection integrated apparatus, the integrated apparatus are proposed
Including filling inner tube, filling outer tube, the first sealing unit and the second sealing unit；
The filling inner tube includes sequentially connected top connection, connecting tube, hollow valve pocket and washing pipe connector, in the connection
It is additionally provided with first piston in pipe and top connection annular space, which is sleeved on the outside of the connecting tube, wherein the company
It is connected and fixed between female connector and hollow valve pocket by pin；The hollow valve pocket inner cavity is additionally provided with matched single stream
Ball；
The filling outer tube includes that upper exterior central tube, lower exterior central tube, reversing cover, company is arranged outside the filling inner tube
Female connector and lower contact, wherein be fixedly connected between described upper exterior central tube one end and lower exterior central tube, the other end and described the
One piston is connected and fixed by anti-rotation pin, and the reversing cover, connector sleeve and lower contact are sequentially connected fixation, on the reversing cover
Trip end is connected with the connecting tube；
First sealing unit include successively be sleeved on the top cover outside the upper exterior central tube, the first sealing drum, on
Cone；
Second sealing unit include successively be sleeved on lower cone outside lower exterior central tube, the second sealing drum, spacer ring,
Elastomeric element, second piston, thermal expansion component and cylinder sleeve；The second piston, thermal expansion component are located at the cylinder sleeve and lower outer center
In annular space between pipe, the cylinder sleeve downstream end is connected and fixed with lower center tube；Between the lower cone and upper cone also
It is set with slips；The conical surface of the upper cone, lower cone inclined-plane of the conical surface respectively with the slips both ends fit.
As an improvement of the present invention, be additionally provided with inlet in the connecting tube upstream, the inlet be located at
Annular space between the first piston upper surface, top connection is connected；On the connection inside pipe wall being in contact with the hollow valve pocket
It is additionally provided with filling mouth, when the hollow valve pocket is moved relative to connecting tube along downstream direction, the filling mouth is opened, the company
The inside of adapter tube is communicated with the outside.
Further, the first piston outer wall, which is additionally provided with, returns liquid mouth, when the opposite top connection of first piston is along downstream side
To when movement, described to return liquid mouth opening, the first piston inner cavity connects with oil jacket annulus.
As another improvement of the invention, shutdown is additionally provided in the annular space between the reversing cover and connecting tube
Set, the shutdown, which is covered, is additionally provided with unidirectional button on the surface being in contact with the reversing cover, the shutdown set can only opposite commutation
Set is unidirectionally moved along updrift side.
Preferably, first sealing unit further includes the first adjusting ring, which is located at first sealing
Between cylinder and upper cone, which is adjusted the position of the first sealing drum.
Further, first sealing unit further includes setting in the top cover upstream end thereof and is sleeved on described outer
Pressure ring outside central tube is provided with the first lock ring in the pressure ring downstream end.
As another improvement of the invention, second sealing unit further includes being sleeved on outside the lower exterior central tube
Portion, between elastomeric element and thermal expansion component and what is abutted each other second adjusts ring and lock ring set, lock ring set and under
The second lock ring is additionally provided in annular space between exterior central tube.
Further, first sealing unit further includes being circumferentially positioned at the top cover both ends and the limit close to top cover
Ring.
Preferably, the elastomeric element is disc spring, and the unidirectional button is gingival cyst of mucous gland in the newborn button or lock tooth.
According to the second aspect of the invention, the operation that operation is carried out using filling, sand control, steam injection integrated apparatus is proposed
Method, comprising the following steps:
Step 1: packing tool is anchored and sets
Ball sealer is put into from well head, pumping liquid pressurization, under hydraulic action, anti-rotation pin is cut, and first piston pushes away
Dynamic top cover is mobile, further compresses the first sealing drum, and swollen envelope first sets unit；
Upper cone is pushed under pressure, opens slips upstream portion, realizes anchoring.
Step 2: filling anti-sand
Continue to suppress to pin and be cut, hollow valve pocket release；
It is pumped into back-up sand, back-up sand is filled by connecting tube to stratum；
Load fluid after filling is returned after the filtering of the sand screen of packing tool lower part by the washing pipe of washing pipe connector lower part
To Dan Liuqiu 33, Dan Liuqiu is opened, enters oil by the annular space between connecting tube and upper exterior central tube, lower exterior central tube
Cover annular space；
Backwash is carried out, flushing fluid is injected, flushing fluid passes through the annular between connecting tube and upper exterior central tube, lower exterior central tube
Space covers upper water-carrying groove into hollow core valve, returns to oil pipe by connecting tube, finally return to ground.
Step 3: giving up
It tears well head open, rotates tubing string, realize that tubing string is given up；And act filling inner tube.
Step 4: steam injection
Tripping in steam injection string carries out steam soak, and thermal expansion component expanded by heating pushes second piston to move upwards, and compresses bullet
Property component, further compress the second sealing drum, swollen envelope second sets unit；
Lower cone is pushed under pressure simultaneously, is further anchored slips, is realized setting under hot environment and anchor
It is fixed.
Compared with the prior art, the advantages of the present invention are as follows set by the integration of filling, sand control, gas filling device first
Meter, realizing a set of tubing string can be carried out filling, sand control and steam injection operation, not only simplifies process, reduces construction
Period and operating cost, and in turn avoid the generation of complex situations；Secondly, passing through the first sealing unit and the second sealing unit
Be equipped with, efficiently solve the pit shaft sealing problem during filling, sand control, more round steam injections, ensure that filling,
It can keep sealing for a long time during sand control and more round steam soaks, there is lasting, efficient sealing performance, both effective guarantee
The filling anti-sand quality and construction safety of thermal production well, and can ensure that thermal production well safety and effectivity produces.
Detailed description of the invention
Fig. 1 be of the invention filling, sand control, steam injection integrated apparatus structural schematic diagram.
Fig. 2 is present invention filling, the mechanism status schematic diagram of sand control, steam injection integrated apparatus when filling construction.
Fig. 3 is present invention filling, the configuration state schematic diagram of sand control, steam injection integrated apparatus when steam injection is constructed.
In figure: 1- top connection, 2- first piston, 3- return liquid mouth, 4- anti-rotation pin, 5- connecting tube, 6- pressure ring, the lock of 7- first
Ring, 8- top cover, the first sealing drum of 9-, 10- first adjust ring, the upper exterior central tube of 11-, 12- upper cone, and 13- slips is bored under 14-
Body, the second sealing drum of 15-, 16- spacer ring, 17- elastomeric element, 18- second adjust ring, 19- lock ring set, the second lock ring of 20-, 21-
Lower exterior central tube, 22- second piston, 23- thermal expansion component, 24- cylinder sleeve, 25- reversing cover, 26- fill mouth, and 27-, which closes the door, to be covered, 28-
Unidirectional button, 29- pin, 30- connector sleeve, 31- lower contact, the hollow valve pocket of 32-, 33- Dan Liuqiu, 34- washing pipe connector, 35- are blocked
Ball.
Specific embodiment
Detailed description for the present invention and technology contents, cooperation Detailed description of the invention it is as follows, however attached drawing only provides reference with
Purposes of discussion is not intended to limit the present invention.
In this application, term " upstream " refers to that the direction towards top connection 1, " downstream " refer to towards washing pipe connector 34
Direction.
Fig. 1 be filling of the invention, sand control, steam injection integrated apparatus structural scheme of mechanism.A kind of filling, sand control, steam injection
Integrated apparatus, including filling inner tube, filling outer tube, the first sealing unit and the second sealing unit；
Filling inner tube includes sequentially connected top connection 1, connecting tube 5, hollow valve pocket 32 and washing pipe connector 34, in connecting tube
5 with 1 annular space of top connection in be additionally provided with first piston 2, which is sleeved on the outside of connecting tube 5, wherein connecting tube 5
It is connected and fixed between hollow valve pocket 32 by pin 29；Hollow 32 inner cavity of valve pocket is additionally provided with matched Dan Liuqiu
33, Dan Liuqiu 33 are located at hollow 32 inner cavity of valve pocket, and the direction which can only allow fluid to swim over to upstream under is flowed；
Wherein, connecting tube 5 is placed in inside top connection 1, is connected through a screw thread on the inside of 1 downstream end of top connection with connecting tube 5.
Filling outer tube includes the upper exterior central tube 11 being arranged in fill outside inner tube, lower exterior central tube 21, reversing cover 25, connects
Female connector 30 and lower contact 31, wherein be fixedly connected between upper 11 one end of exterior central tube and lower exterior central tube 21, the other end and the
One piston 2 is connected and fixed by anti-rotation pin 4, and reversing cover 25, connector sleeve 30 and lower contact 31 are sequentially connected fixation, reversing cover 25
It is placed in inside cylinder sleeve 24,25 upstream end thereof of reversing cover is connected with connecting tube 5；Outer tube integral assembling is filled in filling inner tube
It is external；
First sealing unit includes successively being sleeved on top cover 8 outside exterior central tube 11, the first sealing drum 9, upper cone
12；First sealing drum 9 is located in the groove of top cover 8；
Second sealing unit include successively be sleeved on lower cone 14 outside lower exterior central tube 21, the second sealing drum 15, every
Ring 16, elastomeric element 17, second piston 22, thermal expansion component 23 and cylinder sleeve 24；Second piston 22, thermal expansion component 23 are located at cylinder sleeve 24
In annular space between lower exterior central tube 21,24 downstream end of cylinder sleeve is connected and fixed with lower center tube 21；Lower cone 14 with it is upper
Slips 13 is further sleeved between cone 12；The conical surface inclined-plane with 13 both ends of slips respectively of the conical surface of upper cone 12, lower cone 14
It fits, under external force, upper cone 12 and lower cone 14 can eject slips 13 along the conical surface, pass through the slips on slips 13
Tubing string is anchored by pawl；
In one embodiment, connecting tube 5 is that reverse thread is connect with upper exterior central tube 11.5 upstream of connecting tube also
It is provided with inlet, inlet is connected with the annular space between 2 upper surface of first piston, top connection 1；With hollow valve pocket 32
Filling mouth 26 is additionally provided on 5 inner wall of connecting tube being in contact, when hollow valve pocket 32 is moved relative to connecting tube 5 along downstream direction
When, filling mouth 26 is opened, at this point, the inside of connecting tube 5 is communicated with the outside.
2 outer wall of first piston, which is additionally provided with, returns liquid mouth 3, when first piston 2 is moved relative to top connection 1 along downstream direction,
The opening of liquid mouth 3 is returned, 2 inner cavity of first piston connects with oil jacket annulus.
Shutdown set 27 is additionally provided in annular space between reversing cover 25 and connecting tube 5, close the door set 27 and 25 phase of reversing cover
Unidirectional button 28 is additionally provided on the surface of contact, set 27 of closing the door can only unidirectionally be moved relative to reversing cover 25 along updrift side.One
In preferred embodiment, unidirectional button 28 is gingival cyst of mucous gland in the newborn button or lock tooth.
In still another embodiment, the first sealing unit further includes the first adjusting ring 10, which is located at
Between first sealing drum 9 and upper cone 12, which is adjusted the position of the first sealing drum 9.
First sealing unit further includes the pressure ring that 8 upstream end thereof of top cover is arranged in and is sleeved on outside gone up exterior central tube 11
6,6 downstream end of pressure ring is provided with the first lock ring 7, the first lock ring 7 is mutually nibbled with upper 11 outer surface of exterior central tube by screw thread
It closes, to guarantee that the first lock ring 7 can only be made unidirectionally to move along the direction for above swimming over to downstream.
Second sealing unit further include be sleeved on outside lower exterior central tube 21, be located at elastomeric element 17 and thermal expansion component 23 it
Between and abut each other second adjust ring 18 and lock ring set 19, lock ring set 19 and lower exterior central tube 21 between annular space in also set
It is equipped with the second lock ring 20, the second lock ring 20 is intermeshed with lower upper 21 outer surface of exterior central tube by screw thread, to guarantee second
Make unidirectionally to move in the direction that lock ring 20 can only swim over to upstream under.
In still another embodiment, the first sealing unit further include be circumferentially positioned at 9 both ends of the first sealing drum and close to
The stop collar of first sealing drum 9.Stop collar is to limit expansion of first sealing drum 9 on tubing string axial direction, it is ensured that first
Sealing drum 9 only expands in a lateral direction.
Second sealing unit also may include being circumferentially positioned at 15 both ends of the second sealing drum and close to the second sealing drum 15
Limiting device.Limiting device is to limit expansion of second sealing drum 15 on tubing string axial direction, it is ensured that the second sealing drum 15
Only expand in a lateral direction.
In addition, in another preferred embodiment, elastomeric element 17 is disc spring.First sealing drum 9 is conventional packing element, and material is
Common oil resistant rubber is able to achieve the high pressure sealing of 25MPa or more within 250 DEG C, and the second sealing drum 15 is elevated-temperature seal packing element, can
300 DEG C of high temperature resistant -- 350 DEG C.Sealing is respectively equipped on first piston 2, second piston 22 and respective cooperation faying face
Circle, to ensure sealing effect.
Filling, sand control, steam injection integrated apparatus 13 upstream portion of the first sealing drum 9 and slips in filling anti-sand work progress
The slips pawl divided plays the role of sealing and anchoring, during steam injection, the failure of the first sealing drum 9, but in the work of steam
Under, 15 distending of the second sealing drum, and the slips pawl of 13 downstream part of slips is opened, it ensure that oil jacket annulus during steam injection
Sealing, guarantee service life of packing tool during more round steam soaks.
The operational method that operation is carried out using filling, sand control, steam injection integrated apparatus will be described according to Fig. 1 to 3 below,
The following steps are included:
Step 1: packing tool is anchored and sets
Ball sealer 35 is put into from well head, pumping liquid pressurization, under hydraulic action, anti-rotation pin 4 is cut, first piston
2 push top cover 8 mobile, further compress the first sealing drum 9, swollen envelope first sets unit；
Upper cone 12 is pushed under pressure, opens 13 upstream portion of slips, realizes anchoring.
Step 2: filling anti-sand
Continue to suppress to pin 29 and be cut, hollow valve pocket 32 discharges；
It is pumped into back-up sand, back-up sand is filled by connecting tube 5 to stratum；
Load fluid after filling passes through the washing pipe of 34 lower part of washing pipe connector after the filtering of the sand screen of packing tool lower part
It returns at Dan Liuqiu 33, opens Dan Liuqiu 33, by the annular between connecting tube 5 and upper exterior central tube 11, lower exterior central tube 21
Space enters oil jacket annulus；
Backwash is carried out, flushing fluid is injected, flushing fluid passes through between connecting tube 5 and upper exterior central tube 11, lower exterior central tube 21
Annular space, the water-carrying groove on hollow valve pocket 32 returns to oil pipe by connecting tube 5, finally returns to ground.
Step 3: giving up
It tears well head open, rotates tubing string, realize that tubing string is given up；And act filling inner tube.
Step 4: steam injection
Tripping in steam injection string carries out steam soak, and 23 expanded by heating of thermal expansion component pushes second piston 22 to move upwards, and presses
Contracting elastomeric element 17, further compresses the second sealing drum 15, and swollen envelope second sets unit；
It pushes lower cone 14 under pressure simultaneously, is further anchored slips 13, realizes setting under hot environment
With anchoring.
Although by reference to preferred embodiment, invention has been described, the case where not departing from the scope of the present invention
Under, various improvement can be carried out to it and can replace component therein with equivalent.The invention is not limited to Wen Zhonggong
The specific embodiment opened, but include all technical solutions falling within the scope of the claims.
Claims (10)
1. a kind of filling, sand control, steam injection integrated apparatus, it is characterised in that: outside the integrated apparatus includes filling inner tube, fills
Pipe, the first sealing unit and the second sealing unit；
The filling inner tube includes sequentially connected top connection, connecting tube, hollow valve pocket and washing pipe connector, the connecting tube with
It is additionally provided with first piston in top connection annular space, which is sleeved on the outside of the connecting tube, wherein the connector sleeve
It is connected and fixed between hollow valve pocket by pin；The hollow valve pocket inner cavity is additionally provided with matched Dan Liuqiu；
The filling outer tube includes that upper exterior central tube, lower exterior central tube, reversing cover, connector sleeve is arranged outside the filling inner tube
And lower contact, wherein be fixedly connected between described upper exterior central tube one end and lower exterior central tube, the other end and described first is lived
Plug is connected and fixed by anti-rotation pin, and the reversing cover, connector sleeve and lower contact are sequentially connected fixation, the reversing cover upstream end
Portion is connected with the connecting tube；
First sealing unit includes successively being sleeved on top cover outside the upper exterior central tube, the first sealing drum, upper cone；
Second sealing unit includes lower cone, the second sealing drum, the spacer ring, elasticity being successively sleeved on outside lower exterior central tube
Component, second piston, thermal expansion component and cylinder sleeve；The second piston, thermal expansion component be located at the cylinder sleeve and lower exterior central tube it
Between annular space in, the cylinder sleeve downstream end is connected and fixed with lower center tube；It is also set between the lower cone and upper cone
There is slips；The conical surface of the upper cone, lower cone inclined-plane of the conical surface respectively with the slips both ends fit.
2. integrated apparatus as described in claim 1, it is characterised in that: it is additionally provided with inlet in the connecting tube upstream,
The inlet is connected with the annular space between the first piston upper surface, top connection；Connect with the hollow valve pocket
It is additionally provided with filling mouth on the connection inside pipe wall of touching, it is described when the hollow valve pocket is moved relative to connecting tube along downstream direction
It fills mouth to open, the inside of the connecting tube is communicated with the outside.
3. integrated apparatus as claimed in claim 2, it is characterised in that: the first piston outer wall, which is additionally provided with, returns liquid mouth,
It is described to return liquid mouth opening, the first piston inner cavity and oil jacket ring when first piston is moved relative to top connection along downstream direction
Kongxiang perforation.
4. integrated apparatus as claimed in any one of claims 1-3, it is characterised in that: the reversing cover and connecting tube it
Between annular space in be additionally provided with shutdown set, is additionally provided with unidirectional button on the surface that is in contact with the reversing cover of set of closing the door,
The shutdown set can only unidirectionally be moved relative to reversing cover along updrift side.
5. integrated apparatus as claimed in claim 4, it is characterised in that: first sealing unit further includes the first adjusting
Ring, for the first adjusting ring between first sealing drum and upper cone, which is adjusted the first sealing drum
Position.
6. integrated apparatus as claimed in claim 5, it is characterised in that: first sealing unit further includes being arranged described
Top cover upstream end thereof and the pressure ring being sleeved on outside the upper exterior central tube are provided with the first lock in the pressure ring downstream end
Ring.
7. integrated apparatus as claimed in claim 4, it is characterised in that: second sealing unit further include be sleeved on it is described
Outside lower exterior central tube, between elastomeric element and thermal expansion component and what is abutted each other second adjusts ring and lock ring set, in institute
It states in the annular space between lock ring set and lower exterior central tube and is additionally provided with the second lock ring.
8. integrated apparatus as claimed in claim 6, it is characterised in that: first sealing unit further includes being circumferentially positioned at
The top cover both ends and the stop collar close to top cover.
9. integrated apparatus as claimed in claim 4, it is characterised in that: the elastomeric element is disc spring, and the unidirectional button is
Gingival cyst of mucous gland in the newborn button or lock tooth.
10. a kind of operational method that operation is carried out using integrated apparatus as claimed in any one of claims 1-9 wherein, including with
Lower step:
Step 1: packing tool is anchored and sets
Ball sealer is put into from well head, pumping liquid pressurization, under hydraulic action, anti-rotation pin is cut, and first piston pushes top
Set movement, further compresses the first sealing drum, and swollen envelope first sets unit；
Upper cone is pushed under pressure, opens slips upstream portion, realizes anchoring.
Step 2: filling anti-sand
Continue to suppress to pin and be cut, hollow valve pocket release；
It is pumped into back-up sand, back-up sand is filled by connecting tube to stratum；
Load fluid after filling returns to list by the washing pipe of washing pipe connector lower part after the filtering of the sand screen of packing tool lower part
It flows at ball 33, opens Dan Liuqiu, enter oil jacket ring by the annular space between connecting tube and upper exterior central tube, lower exterior central tube
It is empty；
Backwash is carried out, flushing fluid is injected, flushing fluid is empty by the annular between connecting tube and upper exterior central tube, lower exterior central tube
Between, upper water-carrying groove is covered into hollow core valve, oil pipe is returned to by connecting tube, finally returns to ground.
Step 3: giving up
It tears well head open, rotates tubing string, realize that tubing string is given up；And act filling inner tube.
Step 4: steam injection
Tripping in steam injection string carries out steam soak, and thermal expansion component expanded by heating pushes second piston to move upwards, elasticity of compression portion
Part, further compresses the second sealing drum, and swollen envelope second sets unit；
Lower cone is pushed under pressure simultaneously, is further anchored slips, is realized setting under hot environment and be anchored.
Priority Applications (1)
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| CN111472737A (en) * | 2019-01-24 | 2020-07-31 | 中国石油化工股份有限公司 | Layered steam injection pipe column and method for layered filling sand control well |
| CN113417595A (en) * | 2021-07-13 | 2021-09-21 | 中国石油化工股份有限公司 | Anchoring packer and using method thereof |
| CN114075953A (en) * | 2022-01-06 | 2022-02-22 | 东营市兆鑫工贸有限责任公司 | Conversion type forward filling tool with sealing structure |
| CN114251077A (en) * | 2022-03-01 | 2022-03-29 | 中国石油大学胜利学院 | Double packer steam injection integrated device and method for oil field thick oil exploitation |
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| CN109139099B (en) | 2023-08-04 |
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