CN106121579B - Bi-directional compression hydraulic setting is without anchoring packer and its application method - Google Patents
Bi-directional compression hydraulic setting is without anchoring packer and its application method Download PDFInfo
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- CN106121579B CN106121579B CN201610803778.5A CN201610803778A CN106121579B CN 106121579 B CN106121579 B CN 106121579B CN 201610803778 A CN201610803778 A CN 201610803778A CN 106121579 B CN106121579 B CN 106121579B
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- 238000004873 anchoring Methods 0.000 title claims abstract description 24
- 230000006835 compression Effects 0.000 title claims abstract description 24
- 238000007906 compression Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000012530 fluid Substances 0.000 claims abstract description 54
- 238000012856 packing Methods 0.000 claims abstract description 50
- 230000007246 mechanism Effects 0.000 claims abstract description 37
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims description 57
- 238000009434 installation Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000010008 shearing Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
-
- 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
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- 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)
- Closures For Containers (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention relates to a kind of bi-directional compression hydraulic settings without anchoring packer and its application method, belongs to the downhole packer technical field used in oil exploitation.Its exterior central tube is sleeved on outside inner central tube, and packing element is sleeved on exterior central tube, and lower setting mechanism, solution sealing mechanism and lower retaining mechanism are externally provided in exterior central tube below packing element, and step is hung in inner central tube outer step in exterior central tube；More than packing element it is externally provided with upper retaining mechanism in exterior central tube, more than exterior central tube is sequentially equipped with outside in inner central tube and balances fluid cylinder and upper setting mechanism, position sets balance inlet opening on lower loop and exterior central tube below packing element.Due to being provided with setting mechanism and retaining mechanism in the upper and lower of packing element, the sealability of packing element is greatly improved；Due to being provided with multistage balance fluid cylinder, deblocking shear pin is not arranged packer of the invention, unseals power very little.
Description
Technical field
The present invention relates to the downhole packer technical fields used in oil exploitation, more particularly to a kind of bi-directional compression liquid
Pressure sets no anchoring packer and its application method.
Background technology
In field of petroleum exploitation, downhole packer is the key tool of oil production by layer, according to the sorting technique of packer, tool
There is " compression packing element, without anchoring, hydraulic setting, above propose deblocking " packer of this four features to be known as Y341 type packers.It is this kind of
The deblocking of packer breaks the deblocking shear pin of packer to realize generally by upper lifting pipe post.This brings a problem, when
When packing element bears top pressure difference, there are one downward thrust, the pulling force pair of this thrust and upper lifting pipe post to packing element for top pressure difference
It is a direction for shear pin, when top pressure difference is more than the thrust of packing element the shear strength and packing element and the borehole wall of deblocking shear pin
When the sum of friction, packer will unseal.Therefore, Y341 types packer bear pressure ability it is often little.For a long time with
Come, petroleum science and technology worker has done many researchs, Chinese patent to improve the sealability of this kind of packer：The patent No.
01268288.8, patent name " side-drilling small-diameter packet " discloses a kind of Y341 types packer, which uses two
Grade sets fluid cylinder, and packing element is above pushed away from lower part when setting, and this mode that packing element is set from the reinforcing of packing element one end can not make packing element
It fully sets, therefore, the sealability of packing element is not very high.In addition, the packer is provided with pressure balance mechanism, envelope is improved
The ability of pressure difference being born every device, but when packer bears upper pressure, deblocking shear pin still will bear shearing force, when
When upper pressure is higher, packer can unseal, therefore it is insufficient that it, which holds the ability of pressure,.Packer is because bearing high pressure in order to prevent
Difference and unseal, the packer just need increase deblocking shear pin total anti-shearing force, but so again bring another question, packing
The frictional force of device packing element and casing is limited, for example, for Y341-115 packers, its general frictional force is about 30~
40kN, when the total anti-shearing force for unsealing shear pin is more than this value, packer cannot unseal.
Invention content
In order to solve the above technical problems, having invented bi-directional compression hydraulic setting without anchoring packer, the present invention further carries
The high sealability of packer, it is hypodynamic to solve the problems, such as that packer holds pressure energy.
Present invention employs the following technical solutions：
Without anchoring packer, exterior central tube is sleeved on outside inner central tube bi-directional compression hydraulic setting, and packing element covers at outer center
Guan Shang is externally provided with lower setting mechanism, solution sealing mechanism and lower retaining mechanism below packing element in exterior central tube, inner central tube be equipped with it is interior in
Heart pipe outer step, correspondingly, exterior central tube are equipped with step in exterior central tube, and step hangs over inner central tube outer step in exterior central tube
On；More than packing element upper retaining mechanism is externally provided in exterior central tube, more than exterior central tube in being sequentially equipped with equilibrium liquid outside inner central tube
Cylinder and upper setting mechanism, position sets balance inlet opening on lower loop and exterior central tube below packing element.
Preferred embodiment one, the balance fluid cylinder is two-stage.
Preferred embodiment two, the balance fluid cylinder is three-level.
Application method of the bi-directional compression hydraulic setting without anchoring packer, step are：
A, installation and set packer：Bi-directional compression hydraulic setting is connected on tubing string without anchoring packer and is sent into well
Under, then improve hydraulic coupling set packer in oil pipe；
B, deblocking packer：Tubing string is first transferred, tubing string is then above carried.
Compared with prior art, the beneficial effects of the invention are as follows：First, due to being provided with the machine of setting in the upper and lower of packing element
Structure and retaining mechanism, the contact stress that packing element sets afterwards with casing is significantly increased, thus improves the sealability of packing element；The
Two, inner central tube is provided with outer step, and exterior central tube is accordingly provided with interior step and hangs in the outer step of inner central tube, works as glue
When cylinder bears pressure, the upper pressure that packing element is received has been passed to by exterior central tube in the outer step of inner central tube, and interior center is passed through
Pipe pull down top connection, therefore its hold the ability of pressure no longer by deblocking shear pin influenced, and only with the sealability of packing element itself
It is related；Third, due to being provided with balance fluid cylinder, when packing element bears lower pressure difference, the pressure of packing element lower part is by balancing inlet opening
Packing element or more is passed to through the annular space between inner central tube and exterior central tube and balances fluid cylinder, balances fluid cylinder filling liquid, on dummy piston
Connector is pushed to, packing element is pushed away under equilibrium liquid cylinder sleeve, the lower pressure that packing element is born has been transmitted to top connection by balancing fluid cylinder mechanism.
That is no matter packer of the invention bears pressure or lower pressure, all it is that power has been transmitted to top connection, unseals machine
Structure is no longer influenced by packer sealing pressure, to improve the sealability of packer.4th, it is multistage flat due to being provided with
Weigh fluid cylinder, and deblocking shear pin is not arranged packer of the invention, unseals power very little.
Description of the drawings
Front simply describes the present invention, with reference next to the description present invention following specific examples drawing into one
Step, in detail the narration present invention.These drawings only describe some typical embodiments of the invention, therefore are not construed as limiting
The scope of the present invention processed.In these drawings：
Fig. 1 is structural schematic diagram of the bi-directional compression hydraulic setting without anchoring packer, and the packer in this figure has two-stage flat
Weigh fluid cylinder.
Fig. 2 is structural schematic diagram of the bi-directional compression hydraulic setting without anchoring packer, and the packer in this figure has three-level flat
Weigh fluid cylinder.
Fig. 3 is the enlarged drawing in the portions A in Fig. 2.
Fig. 4 is structural schematic diagram of the bi-directional compression hydraulic setting without anchoring packer, and the packer in this figure has level-one flat
Weigh fluid cylinder.
Specific implementation mode
In the present invention, except deblocking closing piece 19, on set shear pin 2 and under set shear pin 16 in addition to, other parts are cylindrical shape
Structure.
As shown in Figure 1, bi-directional compression hydraulic setting has screw thread to be connected without anchoring packer, top connection 1 with inner central tube 8
It connects, exterior central tube 11 is sleeved on 8 outside of inner central tube, and inner central tube 8 is equipped with inner central tube outer step 23, correspondingly, exterior central tube
11 are equipped with step 22 in exterior central tube, and step 22 is hung in inner central tube outer step 23 in exterior central tube.
Top ring 10, packing element 12 and lower loop 14 are sequentially sleeved on outside exterior central tube 11, between lower loop 14 and outer center 11
16 phase of shear pin is set under to fix.
11 upper periphery of exterior central tube be equipped with upper locking screw 91, upper lock ring 9 be sleeved on exterior central tube 11 and with upper locking
Screw thread 91 is meshed.Upper locking screw 91 and upper lock ring 9 collectively form retaining mechanism 300.The structure of lock ring and locking screw
It is known technology in packer design field.
It is outer between top connection 1 and exterior central tube 11 in inner central tube 8, it is sequentially cased with equilibrium liquid cylinder sleeve 7 from bottom to top, puts down
Weigh piston 6, upper liquid cylinder sleeve 5, upper piston 4.Top ring 10 has screw thread to be connected with balance fluid cylinder set 7, equilibrium liquid cylinder sleeve 7 and upper liquid
Cylinder sleeve 5 has screw thread to be connected, and 5 upper end of upper liquid cylinder sleeve is sleeved on outside top connection 1 and is fixed with top connection 1 by above setting 2 phase of shear pin.
An inner groove is formed between top ring 10 and balance fluid cylinder set 7, upper lock ring 9 is located in the inner groove；
The above position of inner groove, equilibrium liquid cylinder sleeve 7 have step in annular, section L-shaped；Upper liquid cylinder sleeve 5 also has in annular
Step, section are also L-shaped；It is in anti-" L " shape that dummy piston 6, which has annular outer step, section,；In including 6 sets of dummy piston
It is placed in equilibrium liquid cylinder sleeve 7 and upper liquid cylinder sleeve 5 outside heart pipe 8, anti-" L " shape bottom edge periphery and the equilibrium liquid cylinder sleeve 7 of dummy piston 6
The vertical edge inner surface of step forms sealing surface in " L " shape；The anti-shape vertical edge periphery " L " of dummy piston 6 and upper liquid cylinder sleeve 5 " L " shape
The bottom edge inner surface of interior step forms sealing surface；Upper piston 4 is sleeved on inner central tube 8 and is formed by annular space with upper liquid cylinder sleeve 5, and
Respectively sealing surface is formed with the vertical edge inner surface of step in the outer surface of inner central tube 8 and upper liquid cylinder sleeve 5 " L " shape；In upper piston 4
The above position is in setting upper fluid cylinder inlet opening 3 on inner central tube 8；The vertical edge length of anti-" L " the shape outer step of dummy piston 6 should ensure that
When dummy piston 6, upper piston 4 and top connection 1 compress in succession, anti-" L " the shape bottom edge upper surface of 6 outer step of dummy piston with it is upper
Fluid cylinder set 5 is not in contact.
Top connection 1, on set shear pin 2, upper fluid cylinder inlet opening 3,8 common structure of upper piston 4, upper liquid cylinder sleeve 5 and inner central tube
At upper setting mechanism 100.It needs exist for illustrating：Since inner central tube 8 is shared in multiple mechanisms of the present invention, and scheming
Farther out, upper setting mechanism 100 is not in Fig. 1 just interior center for label of the label of inner central tube 8 from upper setting mechanism 100 in 1
Pipe 8 is included, it is not intended that upper setting mechanism 100 does not include inner central tube 8.The composition of mechanism is with explanatory note
Standard, the compositions of other mechanisms indicate that range is different from explanatory note range, with explanatory note also based on same reason in figure
Subject to, behind be not repeated to illustrate.
Upper piston 4, upper liquid cylinder sleeve 5, dummy piston 6, equilibrium liquid cylinder sleeve 7 and inner central tube 8 collectively form balance fluid cylinder
200.Balance fluid cylinder 200 is made of two-stage balanced fluid cylinder, and wherein upper piston 4, upper liquid cylinder sleeve 5 and inner central tube 8 collectively form one
Grade balance fluid cylinder；Dummy piston 6, equilibrium liquid cylinder sleeve 7 and inner central tube 8 collectively form two level balance fluid cylinder.
Lower piston 18 is sleeved on outside exterior central tube 11 and positioned at lower loop 14 hereinafter, exterior central tube 11 sets radial closing piece installation
Hole, lower piston 18 set inner groove, and deblocking closing piece 19 is placed in the radial closing piece mounting hole and inner groove；Unseal closing piece 19 with
Upper 8 periphery of inner central tube that is placed in sets external groove 26；Lower piston 18, deblocking closing piece 19, external groove 26, inner central tube 8 and it is outer in
Heart pipe 11 together constitutes solution sealing mechanism 500.
Lower fluid cylinder set 17 is sleeved on outside lower piston 18, and top has screw thread to be connected with lower loop 14；Lock is set outside lower piston 18
Tight screw thread 27, lower lock ring 20 are sleeved on outside lower piston 18 and are meshed with lower locking screw 27；Gear cap 21 is sleeved on outside lower piston 18 simultaneously
There is screw thread to be connected with lower fluid cylinder set 17, lower lock ring 20 is located at lower fluid cylinder set 17, gear cap 21 and lower piston 18 and is formed by annular space
It is interior；Lower lock ring 20, gear cap 21 and lower locking screw 27 collectively form lower retaining mechanism 600.
In 14 or less position of lower loop in setting fluid cylinder feed liquor endoporus 24 on inner central tube 8, set on exterior central tube 11
Fluid cylinder feed liquor exit orifice 25.
Lower loop 14, under set shear pin 16, lower fluid cylinder set 17, lower piston 18, exterior central tube 11, inner central tube 8, lower fluid cylinder
Feed liquor endoporus 24 and lower fluid cylinder feed liquor exit orifice 25 collectively form lower setting mechanism 400.
Balance feed liquor exit orifice 15 and balance feed liquor endoporus 13 collectively form balance inlet opening.When packing element seals lower pressure,
Low pressure is passed to by the annular space between balance inlet opening, exterior central tube 11 and inner central tube 8 and balances fluid cylinder 200, under pressure
It is bulldozed weighing apparatus fluid cylinder set 7 and upper liquid cylinder sleeve 5, while above pushing away dummy piston 6 and upper piston 4, when equilibrium liquid cylinder sleeve 7 and upper liquid cylinder sleeve 5
When being more than lifting force of the lower pressure to packing element to the lower thrust of packing element 12, packing element would not move, and packer will not unseal.Together
When, equilibrium liquid cylinder sleeve 7 and upper liquid cylinder sleeve 5 can be such that packing element is further compressed the lower thrust of packing element 12, in compressive deformation
Retaining mechanism locks, and this design can make the sealability of packing element be further enhanced.
Lower pressure is more than to the lifting force of packing element to the lower thrust of packing element in order to ensure to balance fluid cylinder, three-level can also be set
Fluid cylinder is balanced, on the basis of the two-stage balanced fluid cylinder of Fig. 1, is further added by level-one balance fluid cylinder, as shown in Figure 2,5 He of upper liquid cylinder sleeve
Increase equilibrium liquid cylinder sleeve 2 201 and dummy piston 2 202 between equilibrium liquid cylinder sleeve 7.Equilibrium liquid cylinder sleeve 2 201 is distinguished by screw thread
Connect upper liquid cylinder sleeve 5 and balance fluid cylinder set 7, dummy piston 2 202 is sleeved on equilibrium liquid cylinder sleeve 7 and balance fluid cylinder cover 2 201 with it is interior
Central tube 8 is formed by annular space.The section of equilibrium liquid cylinder sleeve 2 201 is also L-shaped, the basic phase of structure with upper liquid cylinder sleeve 5
Together, difference has the connection screw thread with upper liquid cylinder sleeve 5 on the top of equilibrium liquid cylinder sleeve 2 201.Dummy piston 2 202 and balance
The structure of piston 6 is identical with mounting means.Upper piston 4, upper liquid cylinder sleeve 5 and inner central tube 8 collectively form level-one equilibrium liquid
Cylinder；Dummy piston 6, equilibrium liquid cylinder sleeve 2 201 and inner central tube 8 collectively form two level balance fluid cylinder；Dummy piston 2 202 is put down
Weighing apparatus fluid cylinder set 7 and inner central tube 8 collectively form three-level balance fluid cylinder.
When packing element bear upper pressure it is higher when, deblocking closing piece 19 just bear higher shearing force, this shearing force to lock
The end of block forms higher extruding force, and when extruding force is more than the yield strength of material therefor, structure will fail, to solve
This problem designs structure as shown in Figure 3, and the section for unsealing the contact site of closing piece 19 and lower piston 18 is in dentation, is squeezed in this way
Pressure will be distributed on multiple inclined-planes, to which the anti-extrusion ability of deblocking closing piece be significantly increased.
When the sealed pressure demand of packer is relatively low, as shown in figure 4, the packer of the present invention can also be level-one liquid
Cylinder, equilibrium liquid cylinder sleeve 7, upper piston 4 and inner central tube collectively form balance fluid cylinder.Unseal in order to prevent, inner central tube and it is outer in
Deblocking shear pin 401 can also be set between heart pipe.
When setting, pressure in inner central tube is increased, upper and lower each self-starting of setting mechanism squeezes packing element from both ends, sets completion
When, change shape lock of the upper and lower retaining mechanism packing element.
When deblocking, tubing string is transferred, 8 downlink of inner central tube when external groove 26 is opposite with deblocking closing piece 19, unseals closing piece 26
Radial to be moved to center, lower piston 18 just loses the constraint of deblocking closing piece 19, packing element 12, lower loop 14, lower fluid cylinder set 17
Constraint is just lost together, and packer completes deblocking.
Application method of the bi-directional compression hydraulic setting without anchoring packer, step are：
A, installation and set packer：Bi-directional compression hydraulic setting is connected on tubing string without anchoring packer and is sent into well
Under, then improve hydraulic coupling set packer in oil pipe；
B, deblocking packer：Tubing string is first transferred, tubing string is then above carried.
Embodiment as described herein is only exemplary embodiments, but is not limited only to these embodiments, those skilled in the art
Member can make modification under without departing from the spirit of the present invention and enlightenment.Aspect disclosed herein there may be many changes,
Combination and modification, and be within, therefore, protection domain is not limited only to explanation above, but according to right
It is required that define, protection domain includes all equivalents of the target of claim.
Claims (8)
1. bi-directional compression hydraulic setting is without anchoring packer, exterior central tube（11）It is sleeved on inner central tube（8）
Outside, packing element（12）It is sleeved on exterior central tube（11）On, packing element（12）Below in exterior central tube（11）
It is externally provided with lower setting mechanism（400）, solution sealing mechanism（500）With lower retaining mechanism（600）, which is characterized in that
Inner central tube（8）Equipped with inner central tube outer step（23）, correspondingly, exterior central tube（11）In outer
Step in heart pipe（22）, step in exterior central tube（22）Hang over inner central tube outer step（23）On；Packing element
（12）Above in exterior central tube（11）It is externally provided with retaining mechanism（300）, exterior central tube（11）More than
In inner central tube（8）It is sequentially equipped with balance fluid cylinder outside（200）With upper setting mechanism（100）, in packing element（12）
Following position is in lower loop（14）And exterior central tube（11）On set balance inlet opening.
2. according to the bi-directional compression hydraulic setting described in claim 1 without anchoring packer, which is characterized in that
The balance fluid cylinder（200）It is two-stage balanced fluid cylinder.
3. according to the bi-directional compression hydraulic setting described in claim 2 without anchoring packer, which is characterized in that
The balance fluid cylinder（200）, wherein upper piston（4）, upper liquid cylinder sleeve（5）And inner central tube（8）Altogether
Fluid cylinder is balanced with level-one is constituted；Dummy piston（6）, equilibrium liquid cylinder sleeve（7）And inner central tube（8）Jointly
It constitutes two level and balances fluid cylinder；Equilibrium liquid cylinder sleeve（7）With upper liquid cylinder sleeve（5）There is screw thread to be connected；Equilibrium liquid
Cylinder sleeve（7）There are step in annular, section L-shaped；Upper liquid cylinder sleeve（5）Also there is step in annular,
Its section is also L-shaped；Dummy piston（6）It is in anti-" L " shape to have annular outer step, section；Balance
Piston（6）It is sleeved on inner central tube（8）It is placed in equilibrium liquid cylinder sleeve outside（7）With upper liquid cylinder sleeve（5）It is interior,
Dummy piston（6）Anti- " L " shape bottom edge periphery and equilibrium liquid cylinder sleeve（7）In " L " shape in the vertical edge of step
Surface forms sealing surface；Dummy piston（6）The anti-shape vertical edge periphery " L " and upper liquid cylinder sleeve（5）" L " shape
The bottom edge inner surface of interior step forms sealing surface；Upper piston（4）It is sleeved on inner central tube（8）With upper liquid cylinder sleeve
（5）Be formed by annular space, and respectively with inner central tube（8）Outer surface and upper liquid cylinder sleeve（5）“L”
The vertical edge inner surface of step forms sealing surface in shape；Dummy piston（6）Anti- the vertical edge degree of " L " shape outer step, which should ensure that, works as
Dummy piston（6）, upper piston（4）And top connection（1）When compressing in succession, balance is lived
Plug（6）Anti- " L " the shape bottom edge upper surface of outer step and upper liquid cylinder sleeve（5）It is not in contact.
4. according to the bi-directional compression hydraulic setting described in claim 1 without anchoring packer, which is characterized in that
The upper retaining mechanism（300）Including upper lock ring（9）With upper locking screw（91）, exterior central tube（11）
Upper periphery is equipped with upper locking screw（91）, upper lock ring（9）It is sleeved on exterior central tube（11）It is outer and with locking
Tight screw thread（91）It is meshed.
5. according to the bi-directional compression hydraulic setting described in claim 1 without anchoring packer, which is characterized in that
The upper setting mechanism（100）Including top connection（1）, on set shear pin（2）, upper fluid cylinder inlet opening（3）、
Upper piston（4）, upper liquid cylinder sleeve（5）And inner central tube（8）；Upper liquid cylinder sleeve（5）And top connection（1）It is logical
It crosses and sets shear pin（2）It is mutually fixed, in top connection（1）And upper piston（4）Between in inner central tube（8）
On set fluid cylinder inlet opening（3）.
6. according to the bi-directional compression hydraulic setting described in claim 1 without anchoring packer, which is characterized in that
The balance fluid cylinder is three-level balance fluid cylinder.
7. according to the bi-directional compression hydraulic setting described in claim 1 without anchoring packer, which is characterized in that
The solution sealing mechanism（500）Including unsealing closing piece（19）And lower piston（18）, the deblocking closing piece
（19）And lower piston（18）Contact site section be in dentation.
8. application method of the bi-directional compression hydraulic setting without anchoring packer described in claim 1, step
It is：
A, installation and set packer：Bi-directional compression hydraulic setting is connected on tubing string simultaneously without anchoring packer
It is sent into underground, then improves hydraulic coupling set packer in oil pipe；
B, deblocking packer：Tubing string is first transferred, tubing string is then above carried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610803778.5A CN106121579B (en) | 2016-09-06 | 2016-09-06 | Bi-directional compression hydraulic setting is without anchoring packer and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610803778.5A CN106121579B (en) | 2016-09-06 | 2016-09-06 | Bi-directional compression hydraulic setting is without anchoring packer and its application method |
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| Publication Number | Publication Date |
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| CN106121579A CN106121579A (en) | 2016-11-16 |
| CN106121579B true CN106121579B (en) | 2018-08-21 |
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2016
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