CN106593344A - Chemical-unblocking compression type fracturing packer - Google Patents
Chemical-unblocking compression type fracturing packer Download PDFInfo
- Publication number
- CN106593344A CN106593344A CN201611214766.5A CN201611214766A CN106593344A CN 106593344 A CN106593344 A CN 106593344A CN 201611214766 A CN201611214766 A CN 201611214766A CN 106593344 A CN106593344 A CN 106593344A
- Authority
- CN
- China
- Prior art keywords
- piston
- lock ring
- wall
- fixedly connected
- lateral wall
- 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.)
- Granted
Links
- 230000006835 compression Effects 0.000 title claims abstract description 66
- 238000007906 compression Methods 0.000 title claims abstract description 66
- 238000012856 packing Methods 0.000 claims abstract description 48
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 61
- 230000007704 transition Effects 0.000 claims description 29
- 239000003292 glue Substances 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 11
- 239000004576 sand Substances 0.000 claims description 8
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 210000000003 hoof Anatomy 0.000 claims description 4
- 239000003129 oil well Substances 0.000 claims description 3
- 239000011800 void material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 238000003466 welding Methods 0.000 description 10
- 239000002195 soluble material Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 210000002445 nipple Anatomy 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
- E21B33/1285—Packers; Plugs with a member expanded radially by axial pressure by fluid pressure
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The invention provides a chemical-unblocking compression type fracturing packer, comprising an upper connector, a vacuum chamber, a release component, a center tube, a middle connector, a lock ring seat, a lower connector, an unblocking sleeve, an unblocking connector, a rubber barrel component and a piston component; the upper connector, the vacuum chamber, the release component, the center tube, the middle connector, the lock ring seat and the lower connector are fixedly connected in sequence; all the unblocking sleeve, the rubber barrel component and the unblocking connector sleeve the center tube and are abutted in sequence, the unblocking sleeve is fixedly connected to the release component, and the unblocking connector is abutted to the piston component; the piston component sleeves the center tube, the middle connector and the lock ring seat; the piston component is fixedly connected to the lock ring seat or the lower connector. The invention also provides a method for packing or unpacking by using the chemical-unblocking compression type fracturing packer. The chemical-unblocking compression type fracturing packer is simple in structure and convenient to mount and construct, can provide automatic unblocking and provide improved safety to remove a string.
Description
Technical field
The invention belongs to oil field gas well fracturing technique field, is related to a kind of chemistry solution sealed compression slips fracturing packer.
Background technology
In sleeve pipe the transformation of packer staged fracturing be realize important technology that hyposmosis, fine and close oil-gas reservoir effectively employ it
One, it is with strong points with fractured interval, the characteristics of fracturing process is continuous.The refracturing of particularly old well, packer in sleeve pipe
Segmentation transformation is unique technological means.
Packer staged fracturing in sleeve pipe, packer is the core of the technology, to meet and seal to live, acts substantially of drawing
Ask.Anchor packer is arranged on the top of tubing string, plays a part of to insulate annular space and anchoring string.Publication No.
The patent application of CN204716190U discloses a kind of compression slips fracturing packer, the packer after the completion of pressure break, on
When proposing tubing string deblocking, there is a problem of that deblocking is difficult, it is usually to be made up of multiple-string packer that main cause is fracturing string, is insulated
Device will overcome the shearing force of shearing ring when unsealing, add the frictional force of packing element and the weight of tubing string, and deblocking load can be very big, especially
It is horizontal well, well head load is delivered to the less efficient of horizontal segment, often results in removing seal for packer not, tubing string rises not out.
Affect the production even overhaul of Oil/gas Well.
The content of the invention
Fracturing packer is difficult to resolve the technical problem of envelope in order to solve prior art, it is an object of the invention to provide a kind of
Chemistry solution sealed compression fracturing packer, chemistry solution sealed compression fracturing packer can unseal automatically, without load is unsealed, greatly
It is big to improve the security that tubing string takes out.
The purpose of the present invention is achieved by the following technical programs：
The present invention provides a kind of chemistry solution sealed compression fracturing packer, and the chemistry solution sealed compression fracturing packer includes
Top connection, vacuum cavity, component of giving up, central tube, transition joint, lock ring seat, lower contact, solution big envelope, solution sealing joint, packing element group
Part and piston component；
The top connection is fixedly connected (threaded connection, clamping, welding etc.) with the vacuum cavity, the vacuum cavity with
The component of giving up is fixedly connected (threaded connection, clamping, welding etc.), and the component of giving up is fixedly connected with the central tube
(threaded connection, clamping, welding etc.), the central tube is fixedly connected (threaded connection, clamping, welding with the transition joint
Deng), the transition joint is fixedly connected (threaded connection, clamping, welding etc.) with the lock ring seat, the lock ring seat with it is described under
Joint is fixedly connected (threaded connection, clamping, welding etc.)；The lock ring seat is the connector with tubular housing；
The solution big envelope, the packing element component and the deblocking joint are set in the outside of the central tube and offset successively
Connect, it is described solution big envelope be fixedly connected with the component of giving up (threaded connection, clamping, welding etc.), it is described solve sealing joint with it is described
Piston component is abutted against；
The piston component is set in the outside of the central tube, the transition joint and the lock ring seat；The piston
Component is fixedly connected (threaded connection, clamping, welding etc.) with the lock ring seat or the lower contact.
In above-mentioned chemistry solution sealed compression fracturing packer, it is preferable that the chemistry solution sealed compression fracturing packer is also
Including sliding sleeve；
The sliding sleeve is arranged on the inner chamber of the top connection, and the lateral wall of the sliding sleeve leads to the internal chamber wall of the top connection
Cross fixture to be fixedly connected and phase airtight connection, in operation, after fixture is cut off, the sliding sleeve is relative to connecing on described
Head slides axially；
The internal chamber wall of the top connection be radially arranged at least one be interlinked to the outside through hole duct (when setting, through hole hole
Covered by sliding sleeve in road；During pressure break, sliding sleeve is hit down, and being interlinked to the outside in through hole duct carries out pressure break)；
It is further preferred that the through hole duct is equally distributed three.
In above-mentioned chemistry solution sealed compression fracturing packer, it is preferable that the fixture is pin.
In above-mentioned chemistry solution sealed compression fracturing packer, it is preferable that the chemistry solution sealed compression fracturing packer is also
Including sliding sleeve；
The sliding sleeve is arranged on the inner chamber of the top connection, and the lateral wall of the sliding sleeve is lived with the internal chamber wall of the top connection
Dynamic connection and airtight connection, the sliding sleeve slides axially relative to the top connection；
The vacuum cavity is made up of chamber and tube wall, and the tube wall of the vacuum cavity is fixedly connected simultaneously with the top connection
Phase airtight connection, an axially arranged duct in the tube wall of the vacuum cavity, the upper end of the tube wall of the vacuum cavity with it is described
The lower end of top connection is provided with space, and towards in pipe, the space is covered by the sliding sleeve in the void openings direction；The cunning
Set constitutes sealed chamber with the space；The madial wall of the sliding sleeve and the madial wall with the top connection and the vacuum cavity
Phase airtight connection；
The upper end in the duct is connected with the space, and the upper end in the duct is provided with a control rod, the control
Rod is the end-blocking of the upper end in the duct.
Above-mentioned end-blocking has referred to the seal of sealing process.
In above-mentioned chemistry solution sealed compression fracturing packer, it is preferable that the tube wall of the vacuum cavity and the top connection
It is fixedly connected by holding screw.
In above-mentioned chemistry solution sealed compression fracturing packer, it is preferable that the control rod is soluble material；More preferably
Ground, the control rod is magnesium alloy material.
In above-mentioned chemistry solution sealed compression fracturing packer, it is preferable that the chemistry solution sealed compression fracturing packer is also
Including sand control screens, the sand control screens are arranged at the opening in the space.
In above-mentioned chemistry solution sealed compression fracturing packer, it is preferable that the component of giving up is including releasing pup joint, giving up connects
Head, vacuum chamber cylinder, assembling piston and fishing sleeve；
The vacuum cavity is fixedly connected and phase airtight connection with the releasing pup joint；The releasing pup joint and the center
Pipe is abutted against；
The back-off sub is set in the outside of the releasing pup joint and the central tube, the lower end of the back-off sub
Madial wall is fixedly connected and phase airtight connection with the lateral wall of the upper end of the central tube；The inner side of the upper end of the back-off sub
Wall is fixedly connected and phase airtight connection by closing piece with the lateral wall of the lower end of the releasing pup joint；
The vacuum chamber jacket casing is located at the outside of the releasing pup joint and the back-off sub, the upper end of the vacuum chamber cylinder
Madial wall and the releasing pup joint lateral wall phase airtight connection, the vacuum chamber cylinder, the back-off sub and described give up
Pipe nipple three forms closed chamber；
The assembling piston is set in the outside of the back-off sub, the lower end of the vacuum chamber cylinder and the assembling piston
Abut against；The upper end of the vacuum chamber cylinder abuts against with the lower end of the tube wall of the vacuum cavity, it is described assembling piston with it is described
The lateral wall of back-off sub is fixedly connected and phase airtight connection；
The fishing sleeve is set in the outside of the vacuum cavity, the vacuum chamber cylinder and the assembling piston；It is described to beat
The madial wall for dragging for the upper end of set is shape of a hoof dentation, and is provided with least one pin thereon, the lower end of the vacuum cavity
Lateral wall at least one keyway that matches with the pin is set, the pin relative in the keyway can slide；
The lateral wall phase airtight connection of the madial wall of the fishing sleeve and the lower end of the vacuum cavity；The madial wall of the fishing sleeve with
The lateral wall difference phase airtight connection of the lateral wall of the vacuum chamber cylinder and the assembling piston；The lower end of the fishing sleeve and institute
The upper end for stating solution big envelope is fixedly connected (threaded connection, clamping, welding etc.)；
It is further preferred that the quantity of the closing piece is uniform 4 for laying；
It is further preferred that the quantity of the pin is uniform 5 for laying；The quantity of the keyway is and the pin phase
5 of the uniform laying of matching.
In above-mentioned chemistry solution sealed compression fracturing packer, the upper end of the vacuum chamber cylinder and the tube wall of the vacuum cavity
Lower end abut against, fluid pressure is transmitted in the duct in the tube wall of vacuum cavity in operation, overstock promote vacuum chamber cylinder it is upper
End.
In above-mentioned chemistry solution sealed compression fracturing packer, the madial wall of the upper end of fishing sleeve is shape of a hoof dentation, can be with
It is conveniently used for coordinating fishing tool to be salvaged and propose operation.
In above-mentioned chemistry solution sealed compression fracturing packer, it is preferable that the madial wall of the lower end of the back-off sub passes through
Holding screw is fixedly connected with the lateral wall of the upper end of the central tube.
It is above-mentioned chemistry solution sealed compression fracturing packer in, it is preferable that it is described assembling piston by least one shear pin with
The lateral wall of the back-off sub is fixedly connected；
It is further preferred that the quantity of the shear pin is uniform 4 for laying.
In above-mentioned chemistry solution sealed compression fracturing packer, it is preferable that packing element component include main packing element, the first secondary packing element,
Second secondary packing element and glue tube base；
Described first secondary packing element, the main packing element, the described second secondary packing element and the glue tube base are set in the central tube
Outside and abut against successively；The first secondary packing element is abutted against with the solution big envelope, the lower end of the solution big envelope with it is described in
The lateral wall phase airtight connection of heart pipe, the glue tube base with the lateral wall phase airtight connection of the central tube and with the solution sealing-in
Head is abutted against.
In above-mentioned chemistry solution sealed compression fracturing packer, it is preferable that the piston component includes that first piston, second live
Plug, lock ring, set dowel bushing and set pin；
The first piston is set in the outside of the central tube and the transition joint, and the second piston is set in institute
State the outside of transition joint and the lock ring seat；
The first piston is abutted against with the solution sealing joint, and the first piston is fixedly connected with the second piston
(threaded connection, clamping, welding etc.)；
The lateral wall phase airtight connection of the madial wall of the upper end of the first piston and the central tube, the first piston
Internal chamber wall and the upper end of the transition joint lateral wall phase airtight connection；Formed one by the first piston, it is described in
The closed chamber that heart pipe and the transition joint three are formed, the closed chamber is provided with inlet, by inlet gas is injected
Body or liquid make closed chamber produce pressure；
The lateral wall phase airtight connection of the madial wall of the upper end of the second piston and the transition joint, described second lives
The lateral wall phase airtight connection of the internal chamber wall of plug and the upper end of the lock ring seat；Formed one by the second piston, it is described in
Between the closed chamber that formed of joint and the lock ring seat three, the closed chamber is provided with inlet, by inlet gas injected
Body or liquid make closed chamber produce pressure；
The lateral wall of the lock ring seat is laciniation, and the lock ring is set in the outside of the lock ring seat and the lock
The madial wall of ring is provided with the laciniation matched with the laciniation of the lateral wall of the lock ring seat, the lock ring phase
For the lock ring seat unidirectionally slides；
The dowel bushing that sets is set in the lateral wall of lower end or the lateral wall of the lower contact of the lock ring seat and leads to
Cross the pin that sets to be fixedly connected；
The second piston is set in the outside of the transition joint, the lock ring seat and the lock ring, and described second lives
The madial wall of the lower end of plug is provided with one raised, and the lock ring is abutted against with the projection, and the lock ring sets pin with described
Seat is abutted against, and the lower end of the second piston is mutually connected with the upper end for setting dowel bushing；When setting, the second piston
Set described in driving and moved on dowel bushing, make the dowel bushing that sets drive the lock ring above to move together；
It is further preferred that the quantity for setting pin is uniform 4 for laying.
In above-mentioned chemistry solution sealed compression fracturing packer, it is preferable that the material of the solution sealing joint is magnesium alloy material,
Or other soluble materials.
The present invention also provides a kind of side for carrying out insulating using above-mentioned chemistry solution sealed compression fracturing packer and conciliating packing
Method, it is comprised the following steps：
Step one, sealed compression fracturing packer is solved with oil pipe G.I.H by the chemistry, and well mouth oil pipe connects pump truck,
Start pump truck carries out suppressing operation to oil pipe, and highly pressurised liquid is entered in the inner chamber of piston component by inlet, promotes piston group
Part is moved upwards, and then promotes the compression of packing element component to be radially expanded, meanwhile, the lock ring in piston component is moved upwards and lock ring seat
Occlusion is fixed, and prevents packing element component resilience, completes setting for chemistry solution sealed compression fracturing packer；
Step 2, to the oil-gas Layer of oil well pressure break is carried out；
Step 3, after the completion of pressure break, above carry deblocking give up component and/or dissolving solution sealing joint, complete deblocking.
" airtight connection " that the present invention is previously mentioned can carry out airtight connection by hermetic units such as sealing ring, oil sealings.
The chemistry solution sealed compression fracturing packer that the present invention is provided has simple structure, installs convenient with constructing operation
Feature, meanwhile, the chemistry solves sealed compression fracturing packer compared with Ordinary Compression formula packer, can unseal automatically, without solution
Envelope load, substantially increases the security of tubing string taking-up.
Description of the drawings
Fig. 1 is the partial cutaway schematic of the chemistry solution sealed compression fracturing packer in the embodiment of the present invention；
Reference numeral explanation：
1 top connection, 2 vacuum cavities, 3 central tubes, 4 transition joints, 5 lock ring seats, 6 lower contacts, 7 solution big envelopes, 8 solution sealing-ins
Head, 9 sliding sleeves, 10 control rods, 11 sand control screens, 12 releasing pup joints, 13 back-off subs, 14 vacuum chamber cylinders, 15 assembling pistons, 16 salvage
Set, 17 main packing elements, 18 first secondary packing elements, 19 second secondary packing elements, 20 glue tube bases, 21 first pistons, 22 second pistons, 23 lock rings,
24 set dowel bushing, and 25 set pin, 26 sealing rings, 27 through hole ducts, 28 sealing rings, 29 ducts, 30 sealing rings, 31 sealings
Circle, 32 sealing rings, 33 holding screws, 34 pins, 35 sealing rings, 36 sealing rings, 37 sealing rings, 38 sealing rings, 39 closing pieces, 40 is close
Seal, 41 sealing rings, 42 sealing rings, 43 shear pins, 44 sealing rings, 45 holding screws, 46 sealing rings, 47 sealing rings, 48 sealing rings,
49 sealing rings, 50 sealing rings, 51 sealing rings, 52 sealing rings, 53 pins.
Specific embodiment
In order to be more clearly understood to the technical characteristic of the present invention, purpose and beneficial effect, now to the skill of the present invention
Art scheme carry out it is described further below, but it is not intended that to the present invention can practical range restriction.
Embodiment
The present embodiment provides a kind of chemistry solution sealed compression fracturing packer, as shown in figure 1, the chemistry solution sealed compression pressure
Packer is split including top connection 1, vacuum cavity 2, central tube 3, transition joint 4, lock ring seat 5, lower contact 6, solution big envelope 7, deblocking
Joint 8, sand control screens 11, component of giving up, packing element component and piston component.
The component of giving up is including releasing pup joint 12, back-off sub 13, vacuum chamber cylinder 14, assembling piston 15 and fishing sleeve
16；The packing element component includes the secondary packing element 19 of the secondary packing element 18, second of main packing element 17, first and glue tube base 20；The piston component
Including first piston 21, second piston 22, lock ring 23, set dowel bushing 24 and set pin 25.
Sliding sleeve 9 is arranged on the inner chamber of top connection 1, and the lateral wall of sliding sleeve 9 is fixed with the internal chamber wall of top connection 1 by pin 53
Connect and by sealing ring 26 and the airtight connection of sealing ring 30, sliding sleeve 9 slides axially relative to top connection 1；The inner chamber of top connection 1
Wall is radially arranged the through hole duct 27 being interlinked to the outside in three, and when setting, through hole duct 27 is covered by sliding sleeve 9, sliding sleeve 9 with
The madial wall of top connection 1 and the madial wall of vacuum cavity 2 are by sealing ring 30 and the phase airtight connection of sealing ring 31；It is sliding during pressure break
Set 9 is hit down, and being interlinked to the outside in through hole duct 27 carries out pressure break.
Vacuum cavity 2 is made up of chamber and tube wall, and the tube wall of the vacuum cavity 2 is by holding screw 33 and top connection 1
Be fixedly connected and by sealing ring 32, an axially arranged duct 29 in the tube wall of vacuum cavity 2, the tube wall of vacuum cavity 2 it is upper
End is provided with space with the lower end of top connection 1, and towards in pipe, the space is covered by sliding sleeve 9, sliding sleeve in the void openings direction
9 constitute sealed chamber with the space；The upper end in duct 29 is connected with the space, and the upper end in duct 29 is provided with a control
Rod 10, control rod 10 passes through the phase airtight connection of sealing ring 28 with the upper end in duct 9；Control rod 10 is soluble material；Sand control screens
11 are arranged at the opening in the space.
Vacuum cavity 2 is threadably secured with releasing pup joint 12 and is connected and by the phase airtight connection of sealing ring 35；Give up short
Section 12 is abutted against with central tube 3；Back-off sub 13 is set in the outside of releasing pup joint 12 and central tube 3, under back-off sub 13
The madial wall at end is fixedly connected and by the mutually closed company of sealing ring 44 with the lateral wall of the upper end of central tube 3 by holding screw 45
Connect；The madial wall of the upper end of back-off sub 13 is by uniform four closing pieces 39 laid and the lateral wall of the lower end of releasing pup joint 12
It is fixedly connected and by the phase airtight connection of sealing ring 42；Vacuum chamber cylinder 14 is set in the outer of releasing pup joint 12 and back-off sub 13
Side, the madial wall of the upper end of vacuum chamber cylinder 14 is with the lateral wall of releasing pup joint 12 by the phase airtight connection of sealing ring 38, vacuum chamber
Cylinder 14, back-off sub 13 and the three of releasing pup joint 12 form closed chamber；Assembling piston 15 is set in the outside of back-off sub 13,
The lower end of vacuum chamber cylinder 14 abuts against with assembling piston 15；The lower end phase of the upper end of vacuum chamber cylinder 14 and the tube wall of vacuum cavity 2
Abut, assemble piston 15 and be fixedly connected by uniform four shear pins 43 laid with the lateral wall of back-off sub 13 and by sealing
Enclose 41 phase airtight connections；Fishing sleeve 16 is set in the outside of vacuum cavity 2, vacuum chamber cylinder 14 and assembling piston 15；Fishing sleeve 16
The madial wall of upper end be shape of a hoof dentation, and be evenly arranged with five pins 34, the outside of the lower end of vacuum cavity 2 thereon
Wall arranges five keyways matched with pin 34, and pin 34 relative in the keyway can slide；The inner side of fishing sleeve 16
Wall passes through the phase airtight connection of sealing ring 36 with the lateral wall of the lower end of vacuum cavity 2；The madial wall of fishing sleeve 16 and vacuum chamber cylinder
14 lateral wall and the lateral wall of assembling piston 15 are respectively by sealing ring 37 and the phase airtight connection of sealing ring 40；Fishing sleeve 16
Lower end is threadably secured with the upper end of solution big envelope 7 and is connected.
The secondary packing element 19 of first secondary packing element 18, main packing element 17, second and glue tube base 20 be set in the outside of central tube 3 and according to
It is secondary to abut against；First secondary packing element 18 is abutted against with solution big envelope 7, and the lateral wall of the lower end and central tube 3 that solve big envelope 7 passes through sealing ring
46 phase airtight connections, glue tube base 20 is offseted with the lateral wall of central tube 3 by the phase airtight connection of sealing ring 47 and with solution sealing joint 8
Connect.
Central tube 3 and transition joint 4 are threadably secured connection；Transition joint 4 and the company of being threadably secured of lock ring seat 5
Connect；Lock ring seat 5 is threadably secured with lower contact 6 and is connected and by the phase airtight connection of sealing ring 52；First piston 21 is set in
Central tube 3 and the outside of transition joint 4, second piston 22 is set in the outside of transition joint 4 and lock ring seat 5；First piston 21
Abut against with solution sealing joint 8, first piston 21 is threadably secured with second piston 22 and is connected；The upper end of first piston 21 it is interior
Side wall passes through the phase airtight connection of sealing ring 48 with the lateral wall of central tube 3, and the internal chamber wall of first piston 21 is upper with transition joint 4
The lateral wall at end passes through the phase airtight connection of sealing ring 49；One is formed by first piston 21, central tube 3 and the three of transition joint 4
The closed chamber of formation, the closed chamber is provided with inlet, and injecting gas or liquid by inlet produces closed chamber
Pressure；The madial wall of the upper end of second piston 22 passes through the phase airtight connection of sealing ring 50 with the lateral wall of transition joint 4, and second lives
The internal chamber wall of plug 22 passes through the phase airtight connection of sealing ring 51 with the lateral wall of the upper end of lock ring seat 5；One is formed by second piston
22nd, the closed chamber that transition joint 4 and the three of lock ring seat 5 are formed, the closed chamber is provided with inlet, is injected by inlet
Gas or liquid make closed chamber produce pressure；The lateral wall of lock ring seat 5 is laciniation, and lock ring 23 is set in lock ring seat 5
Outside and the madial wall in lock ring 23 be provided with the zigzag that matches with the laciniation of the lateral wall of lock ring seat 5 and tie
Structure, lock ring 23 unidirectionally slides relative to lock ring seat 5；Set dowel bushing 24 be set in lower contact 6 upper end lateral wall and pass through
Uniform four for laying set pin 25 and are fixedly connected；Second piston 22 is set in transition joint 4, lock ring seat 5 and lock ring 23
Outside, the madial wall of the lower end of second piston 22 is provided with one raised, and lock ring 23 is abutted against with the projection, lock ring 23 with set
Dowel bushing 24 is abutted against, and the lower end of second piston 22 is mutually connected with the upper end for setting dowel bushing 24；When setting, second piston 22
Drive sets and moved on dowel bushing 24, makes to set the upper shifting together of the drive of dowel bushing 24 lock ring 23.The material of solution sealing joint 8 is magnesium alloy
Material.
The method that the present embodiment also provides packing with the solution packing of above-mentioned chemistry solution sealed compression fracturing packer, it includes
Following steps：
(1) above-mentioned chemistry is solved into sealed compression fracturing packer with oil pipe G.I.H, well mouth oil pipe connection pump truck, is started
Pump truck carries out suppressing operation to oil pipe, and highly pressurised liquid is entered in the inner chamber of first piston 21 and second piston 22 by inlet,
Promote first piston 21 and second piston 22 to move upwards, cut off and set pin 25, and then promote the main compression of packing element 17 radially swollen
Swollen, now the laciniation of the madial wall of lock ring 23 is mutually engaged fixation with the laciniation of the lateral wall of lock ring seat 5, it is ensured that
The not resilience of main packing element 17, completes setting for chemistry solution sealed compression fracturing packer.
(2) pressure break is carried out to the oil-gas Layer of oil well, while the upper end of the chemistry solution sealed compression fracturing packer can also
Pressure break is carried out, the pressure break of the input size corresponding with the chemistry solution sealed compression fracturing packer upper end sliding sleeve 9 into oil pipe
Ball (soluble ball), pressure break ball falls the upper end of sliding sleeve 9, continues plus pump pressure, and the fixing pin 53 of sliding sleeve 9 is cut off, the edge of sliding sleeve 9
Axle is moved downward, and the inside and outside connection in through hole duct 27 of top connection 1, pressure break passage is opened, so as to realize to the chemistry deblocking pressure
The pressure break of interval on contracting formula fracturing packer.
(3) after the completion of pressure break, the chemistry solution sealed compression fracturing packer is unsealed, the chemistry solution sealed compression pressure
The solution sealing joint 8 for splitting packer contacts generation chemical reaction with well liquid, and after certain hour, solution sealing joint 8 is dissolved completely in well liquid
In, the space of packing element component bottom is conceded, main packing element 17 is unsealed under its own resilient.It is magnesium alloy material due to solving sealing joint 8
Material, it is easier to react and dissolve with water；
The chemistry deblocking can be used cooperatively with following deblocking modes, halfway emergent as scene solution sealing joint dissolving
Measure.The deblocking mode is：During due to pressure break, sliding sleeve 9 is hit down, and liquid enters vacuum cavity 2 through sand control screens 11
In the space that the upper end of tube wall is arranged with the lower end of top connection 1, and control rod 10 is dissolved, control rod 10 is soluble material
Matter, after control rod 10 dissolves in down-hole, pump pressure is beaten again into well, and liquid promotes vacuum through the upper end of vacuum chamber cylinder 14
Chamber cylinder 14 is moved downward, and cuts off shear pin 43, and assembling piston 15 is moved downward, and the space of lock ring 23 is conceded, so as to lock ring 23 loses
Protection, back-off sub 13 and releasing pup joint 12 are separated, and tubing string is lifted in well head, top connection 1, vacuum cavity 2 and lose
Hand pipe nipple 12 is together moved upwards.When vacuum cavity 2 is moved upwards, the pin 34 and vacuum cavity of the madial wall of fishing sleeve 16 is driven
The keyway of 2 lateral wall fastens, and so as to drive fishing sleeve 16 to move upwards, concedes the space above packing element component, so that
The resilience deblocking under its own resilient of main packing element 17, if now still unsealing difficulty, can improve well head pulling force, by fishing sleeve 16
On pin 36 cut off, top connection 1, vacuum cavity 2, releasing pup joint 12 are proposed outside well, enter fishing tool to taking down again
The mouth of pipe screw thread of set is dragged for, the salvaging to packer reserved part in well is completed, deblocking is completed.
The chemistry solution sealed compression fracturing packer that in sum present invention is provided has simple structure, installs and construction behaviour
Make the characteristics of facilitating, meanwhile, the chemistry solves sealed compression fracturing packer compared with Ordinary Compression formula packer, can solve automatically
Envelope, without deblocking load, substantially increases the security of tubing string taking-up.
Claims (10)
1. a kind of chemistry solves sealed compression fracturing packer, it is characterised in that：The chemistry solution sealed compression fracturing packer includes
Top connection, vacuum cavity, component of giving up, central tube, transition joint, lock ring seat, lower contact, solution big envelope, solution sealing joint, packing element group
Part and piston component；
The top connection is fixedly connected with the vacuum cavity, and the vacuum cavity is fixedly connected with the component of giving up, described
Component of giving up is fixedly connected with the central tube, and the central tube is fixedly connected with the transition joint, the transition joint with
The lock ring seat is fixedly connected, and the lock ring seat is fixedly connected with the lower contact；The lock ring seat is with tubular housing
Connector；
The solution big envelope, the packing element component and the deblocking joint are set in the outside of the central tube and abut against successively,
The solution big envelope is fixedly connected with the component of giving up, and the solution sealing joint is abutted against with the piston component；
The piston component is set in the outside of the central tube, the transition joint and the lock ring seat；The piston component
It is fixedly connected with the lock ring seat or the lower contact.
2. chemistry according to claim 1 solves sealed compression fracturing packer, it is characterised in that：The chemistry deblocking compression
Formula fracturing packer also includes sliding sleeve；
The sliding sleeve is arranged on the inner chamber of the top connection, and the lateral wall of the sliding sleeve passes through solid with the internal chamber wall of the top connection
Determine part to be fixedly connected and phase airtight connection, in operation, fixture is cut off, the sliding sleeve is axially sliding relative to the top connection
It is dynamic；
The internal chamber wall of the top connection is radially arranged the through hole duct being interlinked to the outside at least one, and the through hole duct is described
Sliding sleeve covers；
Preferably, the through hole duct is equally distributed three；
Preferably, the fixture is pin.
3. chemistry according to claim 1 solves sealed compression fracturing packer, it is characterised in that：
The chemistry solution sealed compression fracturing packer also includes sliding sleeve；
The sliding sleeve is arranged on the inner chamber of the top connection, and the lateral wall of the sliding sleeve connects with the internal chamber wall activity of the top connection
Connect, the sliding sleeve slides axially relative to the top connection；
The vacuum cavity is made up of chamber and tube wall, and the tube wall of the vacuum cavity is fixedly connected and mutually close with the top connection
Close connection, axially penetrate through in the tube wall of the vacuum cavity setting one duct, the upper end of the tube wall of the vacuum cavity with it is described
The lower end of top connection is provided with space, and towards in pipe, the space is covered by the sliding sleeve, the cunning in the void openings direction
The madial wall phase airtight connection of set and the madial wall with the top connection and the vacuum cavity；
The upper end in the duct is connected with the space, and the upper end in the duct is provided with a control rod, and the control rod is
The end-blocking of the upper end in the duct；
Preferably, the tube wall of the vacuum cavity is fixedly connected with the top connection by holding screw.
4. chemistry according to claim 3 solves sealed compression fracturing packer, it is characterised in that：The control rod is solvable
Property material.
5. chemistry according to claim 3 solves sealed compression fracturing packer, it is characterised in that：The chemistry deblocking compression
Formula fracturing packer also includes sand control screens, and the sand control screens are arranged at the opening in the space.
6. chemistry according to claim 1 solves sealed compression fracturing packer, it is characterised in that：The component of giving up includes
Releasing pup joint, back-off sub, vacuum chamber cylinder, assembling piston and fishing sleeve；
The vacuum cavity is fixedly connected and phase airtight connection with the releasing pup joint；The releasing pup joint and the central tube phase
Abut；
The back-off sub is set in the outside of the releasing pup joint and the central tube, the inner side of the lower end of the back-off sub
Wall is fixedly connected and phase airtight connection with the lateral wall of the upper end of the central tube；The madial wall of the upper end of the back-off sub leads to
Cross closing piece to be fixedly connected with the lateral wall of the lower end of the releasing pup joint and phase airtight connection；
The vacuum chamber jacket casing is located at the outside of the releasing pup joint and the back-off sub, the upper end of the vacuum chamber cylinder it is interior
The lateral wall phase airtight connection of side wall and the releasing pup joint, the vacuum chamber cylinder, the back-off sub and the releasing pup joint
Three forms closed chamber；
The assembling piston is set in the outside of the back-off sub, and the lower end of the vacuum chamber cylinder offsets with the assembling piston
Connect；The upper end of the vacuum chamber cylinder abuts against with the lower end of the tube wall of the vacuum cavity, and the assembling piston is given up with described
The lateral wall of joint is fixedly connected and phase airtight connection；
The fishing sleeve is set in the outside of the vacuum cavity, the vacuum chamber cylinder and the assembling piston；The fishing sleeve
The madial wall of upper end be shape of a hoof dentation, and be provided with least one pin thereon, the lower end of the vacuum cavity it is outer
Side wall arranges at least one keyway matched with the pin, and the pin relative in the keyway can slide；It is described
The lateral wall phase airtight connection of the madial wall of fishing sleeve and the lower end of the vacuum cavity；The madial wall of the fishing sleeve with it is described
The lateral wall difference phase airtight connection of the lateral wall of vacuum chamber cylinder and the assembling piston；The lower end of the fishing sleeve and the solution
The upper end of big envelope is fixedly connected；
Preferably, the madial wall of the lower end of the back-off sub is consolidated by holding screw with the lateral wall of the upper end of the central tube
Fixed connection；
Preferably, the assembling piston is fixedly connected by least one shear pin with the lateral wall of the back-off sub；
Preferably, the quantity of the pin is uniform 5 for laying；The quantity of the keyway is equal with what the pin matched
5 of even laying；
Preferably, the quantity of the closing piece is uniform 4 for laying；
Preferably, the quantity of the shear pin is uniform 4 for laying.
7. chemistry according to claim 1 solves sealed compression fracturing packer, it is characterised in that：Packing element component includes main glue
Cylinder, the first secondary packing element, the second secondary packing element and glue tube base；
Described first secondary packing element, the main packing element, the described second secondary packing element and the glue tube base are set in the outer of the central tube
Side simultaneously abuts against successively；The first secondary packing element is abutted against with the solution big envelope, the lower end of the solution big envelope and the central tube
Lateral wall phase airtight connection, the glue tube base with the lateral wall phase airtight connection of the central tube and with it is described solution sealing joint phase
Abut.
8. chemistry according to claim 1 solves sealed compression fracturing packer, it is characterised in that：The piston component includes
First piston, second piston, lock ring, set dowel bushing and set pin；
The first piston is set in the outside of the central tube and the transition joint, the second piston be set in it is described in
Between joint and the lock ring seat outside；
The first piston is abutted against with the solution sealing joint, and the first piston is fixedly connected with the second piston；
The lateral wall phase airtight connection of the madial wall of the upper end of the first piston and the central tube, the first piston it is interior
The lateral wall phase airtight connection of cavity wall and the upper end of the transition joint；
The lateral wall phase airtight connection of the madial wall of the upper end of the second piston and the transition joint, the second piston
The lateral wall phase airtight connection of internal chamber wall and the upper end of the lock ring seat；
The lateral wall of the lock ring seat is laciniation, and the lock ring is set in the outside of the lock ring seat and in the lock ring
Madial wall be provided with the laciniation matched with the laciniation of the lateral wall of the lock ring seat, the lock ring is relative
Unidirectionally slide in the lock ring seat；
The dowel bushing that sets is set in the lateral wall of lower end or the lateral wall of the lower contact of the lock ring seat and by institute
State and set pin and be fixedly connected；
The second piston is set in the outside of the transition joint, the lock ring seat and the lock ring, the second piston
The madial wall of lower end is provided with one raised, and the lock ring is abutted against with the projection, and the lock ring sets dowel bushing phase with described
Abut, the lower end of the second piston is mutually connected with the upper end for setting dowel bushing；
Preferably, the quantity for setting pin is uniform 4 for laying.
9. chemistry according to claim 1 solves sealed compression fracturing packer, it is characterised in that：The material of the solution sealing joint
Matter is magnesium alloy material.
10. a kind of usage right requires that chemistry solution sealed compression fracturing packer described in any one of 1-9 carries out packing and conciliates packing
Method, it is comprised the following steps：
Step one, sealed compression fracturing packer is solved with oil pipe G.I.H, well mouth oil pipe connection pump truck by the chemistry, is started
Pump truck carries out suppressing operation to oil pipe, and highly pressurised liquid is entered in the inner chamber of piston component by inlet, promote piston component to
Upper motion, and then promote the compression of packing element component to be radially expanded, meanwhile, the lock ring in piston component moves be engaged with lock ring seat upwards
It is fixed, packing element component resilience is prevented, complete setting for chemistry solution sealed compression fracturing packer；
Step 2, to the oil-gas Layer of oil well pressure break is carried out；
Step 3, after the completion of pressure break, above carry deblocking give up component and/or dissolving solution sealing joint, complete deblocking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611214766.5A CN106593344B (en) | 2016-12-26 | 2016-12-26 | A kind of chemistry solution sealed compression fracturing packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611214766.5A CN106593344B (en) | 2016-12-26 | 2016-12-26 | A kind of chemistry solution sealed compression fracturing packer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106593344A true CN106593344A (en) | 2017-04-26 |
| CN106593344B CN106593344B (en) | 2019-02-15 |
Family
ID=58602155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611214766.5A Active CN106593344B (en) | 2016-12-26 | 2016-12-26 | A kind of chemistry solution sealed compression fracturing packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106593344B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109577905A (en) * | 2018-11-06 | 2019-04-05 | 山东大东联石油设备有限公司 | A kind of repeatable compression packer for setting deblocking |
| CN111794709A (en) * | 2020-08-14 | 2020-10-20 | 大庆金祥寓科技有限公司 | Safe, environmental protection, can pressure release seal well device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2869301Y (en) * | 2006-03-09 | 2007-02-14 | 大庆油田有限责任公司 | Compression type low-pressure sealing-test packer |
| CN101165309A (en) * | 2006-10-18 | 2008-04-23 | 刘宜贵 | Compression type packer |
| US20110272138A1 (en) * | 2007-10-26 | 2011-11-10 | Gustavo Martin Jara | Hydraulic packer constructed entirely of glass-fiber composition and stainless steel |
| US20130299200A1 (en) * | 2012-05-11 | 2013-11-14 | Resource Well Completion Technologies Inc. | Wellbore Tools and Methods |
| CN203847056U (en) * | 2014-04-04 | 2014-09-24 | 中国石油天然气股份有限公司 | Large-diameter packer |
| CN204175231U (en) * | 2014-08-07 | 2015-02-25 | 北京金凯晟石油装备科技有限公司 | Back-off packer |
| CN204877369U (en) * | 2015-08-25 | 2015-12-16 | 中国石油化工股份有限公司 | Liquid accuse is from deblocking formula fracturing packer |
| US20160053569A1 (en) * | 2014-08-20 | 2016-02-25 | Tacker S.R.L. | Retrievable packer for operations in cased wells at high pressures |
| CN205225172U (en) * | 2015-11-30 | 2016-05-11 | 中国石油天然气股份有限公司 | Water injection packer capable of being used for washing well |
| CN205743821U (en) * | 2016-05-16 | 2016-11-30 | 中国石油化工股份有限公司 | A kind of thermal packer |
-
2016
- 2016-12-26 CN CN201611214766.5A patent/CN106593344B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2869301Y (en) * | 2006-03-09 | 2007-02-14 | 大庆油田有限责任公司 | Compression type low-pressure sealing-test packer |
| CN101165309A (en) * | 2006-10-18 | 2008-04-23 | 刘宜贵 | Compression type packer |
| US20110272138A1 (en) * | 2007-10-26 | 2011-11-10 | Gustavo Martin Jara | Hydraulic packer constructed entirely of glass-fiber composition and stainless steel |
| US20130299200A1 (en) * | 2012-05-11 | 2013-11-14 | Resource Well Completion Technologies Inc. | Wellbore Tools and Methods |
| CN203847056U (en) * | 2014-04-04 | 2014-09-24 | 中国石油天然气股份有限公司 | Large-diameter packer |
| CN204175231U (en) * | 2014-08-07 | 2015-02-25 | 北京金凯晟石油装备科技有限公司 | Back-off packer |
| US20160053569A1 (en) * | 2014-08-20 | 2016-02-25 | Tacker S.R.L. | Retrievable packer for operations in cased wells at high pressures |
| CN204877369U (en) * | 2015-08-25 | 2015-12-16 | 中国石油化工股份有限公司 | Liquid accuse is from deblocking formula fracturing packer |
| CN205225172U (en) * | 2015-11-30 | 2016-05-11 | 中国石油天然气股份有限公司 | Water injection packer capable of being used for washing well |
| CN205743821U (en) * | 2016-05-16 | 2016-11-30 | 中国石油化工股份有限公司 | A kind of thermal packer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109577905A (en) * | 2018-11-06 | 2019-04-05 | 山东大东联石油设备有限公司 | A kind of repeatable compression packer for setting deblocking |
| CN109577905B (en) * | 2018-11-06 | 2020-11-20 | 山东大东联石油设备有限公司 | Compression packer capable of repeatedly setting and unsetting |
| CN111794709A (en) * | 2020-08-14 | 2020-10-20 | 大庆金祥寓科技有限公司 | Safe, environmental protection, can pressure release seal well device |
| CN111794709B (en) * | 2020-08-14 | 2021-04-02 | 大庆金祥寓科技有限公司 | Safe, environmental protection, can pressure release seal well device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106593344B (en) | 2019-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104603393B (en) | Expandable liner hanger and application method | |
| CN106437605B (en) | A kind of packer | |
| CN206693997U (en) | A kind of oil field is every excavating technology tubing string | |
| CN111472690B (en) | Sidetracking well completion method | |
| CA3080647C (en) | Tubular column for drill-free and catch-free integrated well cementing and well completion and application thereof | |
| CN206376814U (en) | Packer | |
| CN108386157A (en) | A kind of piston pressure open-type sliding sleeve switch and hydraulic fracturing construction method | |
| CN106593344A (en) | Chemical-unblocking compression type fracturing packer | |
| CN206439026U (en) | Unidirectional detachable bridge plug | |
| CN107605428A (en) | One kind can pressure release shut-in well bridging plug | |
| CN206617134U (en) | A kind of packer | |
| CN106593346B (en) | A kind of chemistry solution sealed compression slips fracturing packer | |
| CN106593391B (en) | Chemistry solution sealed compression packer partial pressure tubular column and wellfracturing method | |
| CN203742541U (en) | Anti-gas-channeling well cementation guaranteeing device for bottom of well | |
| CN203808896U (en) | Long-section casing damage well expansion pipe double-card casing pipe layered packing repairing device | |
| CN209011780U (en) | It is a kind of without anchoring thermal packer | |
| CN110410030B (en) | Composite material application repairing pipe column and method | |
| CN209011791U (en) | Unidirectional anchoring type thermal packer | |
| CN108240205A (en) | Down-hole casing twin-stage bores expansion device and its operational method | |
| CN112709546A (en) | Pipeline crossing type efficient suspension releasing packer and method | |
| CN111485849A (en) | Casing hydraulic packer | |
| CN103982159B (en) | Can ball-throwing type reverse circulation valve | |
| CN208950526U (en) | Without the big channel thermal packer of anchoring | |
| CN208106372U (en) | A kind of compound preventer of sucker rod | |
| CN206562923U (en) | Washing well HTHP water injection packer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |