CN106437603B - Resin hole packer - Google Patents
Resin hole packer Download PDFInfo
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- CN106437603B CN106437603B CN201510491408.8A CN201510491408A CN106437603B CN 106437603 B CN106437603 B CN 106437603B CN 201510491408 A CN201510491408 A CN 201510491408A CN 106437603 B CN106437603 B CN 106437603B
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- 229920005989 resin Polymers 0.000 title description 4
- 239000011347 resin Substances 0.000 title description 4
- 238000010276 construction Methods 0.000 claims abstract description 27
- 239000004814 polyurethane Substances 0.000 claims abstract description 26
- 229920002635 polyurethane Polymers 0.000 claims abstract description 25
- 239000012530 fluid Substances 0.000 claims abstract description 24
- 239000003245 coal Substances 0.000 claims abstract description 22
- 239000002131 composite material Substances 0.000 claims abstract description 21
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 17
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 17
- 239000012528 membrane Substances 0.000 claims abstract description 17
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- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
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- 229920006332 epoxy adhesive Polymers 0.000 claims abstract description 5
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- 239000006071 cream Substances 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
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- 238000007789 sealing Methods 0.000 description 57
- 239000000463 material Substances 0.000 description 29
- 239000004568 cement Substances 0.000 description 24
- 238000002347 injection Methods 0.000 description 17
- 239000007924 injection Substances 0.000 description 17
- 239000003292 glue Substances 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 239000007788 liquid Substances 0.000 description 15
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 239000004575 stone Substances 0.000 description 10
- 229920005830 Polyurethane Foam Polymers 0.000 description 9
- 238000001764 infiltration Methods 0.000 description 9
- 230000008595 infiltration Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 229920006262 high density polyethylene film Polymers 0.000 description 8
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- 238000010008 shearing Methods 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000002390 adhesive tape Substances 0.000 description 4
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- 239000002985 plastic film Substances 0.000 description 4
- 229920006255 plastic film Polymers 0.000 description 4
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
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Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The hole packer of pressure fluid in a kind of closure drilling in coal and rock, hole packer is divided into plain edition and fast curable type by construction waiting time, plain edition is suitable for construction waiting time > 6h, fast curable type is suitable for construction 0.5~6h of waiting time, hole packer includes the polyurethane swelling agent of the outer epoxy adhesive or unsaturated polyester (UP) adhesive and built-in two-component for smearing two-component, there is the composite geo-membrane bag of intermediate isolating, polyethylene film truncated cone bag the long coated high density polyethylene (HDPE) in both ends (HDPE) film item and detached with there are two, the composite geo-membrane physical and mechanical property requires to comply with standard the 4th article of GB/T17642-2008.The hole packer seals that body is short, resistance to compression impermeability is strong, construction waiting time is short, convenience hand-manipulated, use cost are low.
Description
Technical field
The present invention relates to the pressure fluid closure for being pumped water filling in a kind of mine and geotechnical engineering, being pumped inlet well, are
The special engineerings such as coal rock layer high pressure water injection, hydraulic fracturing, grouting for water plugging, breaking surrounding rock slip casting solidification, gas pressure measurement are essential
Device.
Background technology
The closure of rock coal bed drilling pressure fluid is related to hydraulic pressure range (the firedamp taking-out discharging drilling envelope body both ends of 0.3~40Mpa
Pressure difference be only about 0.2 atmospheric pressure negative pressure, be not related to the present invention) and several tens cm to more than ten meters hole sealing depth.By hydraulic pressure
(pump pressure) consideration can be divided into two classes, and pressure > 5Mpa should belong to high pressure, and pressure≤5Mpa should belong to mesolow；Consider by hole sealing depth
Also it can be divided into two classes, envelope depth≤2m should belong to superficial part sealing of hole, and envelope depth > 2m should belong to deep sealing of hole.During superficial part sealing of hole hydraulic pressure is generally
Low pressure, if grouting for water plugging is pumped about 0.3~2Mpa, breaking surrounding rock cures fluid injection and is pumped about 5Mpa, moistens the dust-proof pump pressure < in coal seam
5Mpa etc.；Deep sealing of hole hydraulic pressure is generally high pressure, and if coal-bed flooding erosion control protrusion-dispelling is pumped 10~30Mpa, coal seam hydraulic fracture is anti-
Prominent pump pressure > 20Mpa etc..Prior art superficial part sealing of hole uses rubber hole packer or quick-hardening cement.Rubber hole packer is using solid
The frictional force that the elasticity of body rubber is generated in hole wall carries out the device of sealing of hole, to irregular rough and uneven in surface coal hole wall adaptability
Difference tends to occur leakage, need to there is inflation or filling device, and cost is very high, using being restricted.Quick-hardening cement is with ordinary silicon
Acid salt cement or portland slag cement are base material, are doped with rapid hardening hydraulic cementing materials made of additive, cementing strength compared with
Greatly, construction waiting time is shorter, but consolidates difficulty to the narrow annular space feeding between hole wall and liquid pipe, can not be used for
Deep sealing of hole.Prior art deep sealing of hole uses polyurethane (PU) foamed plastics or Behavior of Hardened Cement Paste sealing of hole.PU foamed plastics sealing of hole knots
Structure is made of the stifled liquid section and intermediate pumping two-component liquid material section at both ends, and stifled liquid section is made of towelling circumvolution PU feed liquids, feed liquid
Foamed plastics annulated column, the long > 8m of annulated column are formed after solidification between drilling and water injection pipe.PU foamed plastics annulated column outer boundaries and rock
The adherency shearing strength of coal hole wall is low, and porous body easily permeates, and resistance to compression impermeability is low, and construction waiting time is longer (> 8h), behaviour
Need manual, pumping two procedures, use cost high.Behavior of Hardened Cement Paste sealing of hole body is also by the stifled slurry section at both ends and intermediate pumping cement
Section composition is starched, blocks up slurry section by the PU foaming bags or towelling circumvolution PU feed liquids or cement mortar described in patent 200710098325.8
Cloth bag formation, cement mortar are the slurry of cement material or other cement admixtures described in patent ZL200810019493.8, Behavior of Hardened Cement Paste
The long > 8m of annulated column.Since the bond of Behavior of Hardened Cement Paste and rock coal borer hole wall is derived from the smaller intermolecular force (Van der Waals of active force
Power or hydrogen bond force etc.), in addition cement softness colloid is still in solidification intensity growth starting stage, institute within construction waiting time
Very low with the cementing shearing strength of rock coal hole wall with the outer boundary of cement softness annulated column, i.e., ability resistant to pressure is very low；It is first in solidification
The soft cement annulated column in stage beginning is porous body again, also low (compared with set cement poor 6 quantity of infiltration coefficient of impermeability
Grade)；Also construction waiting time length (general > 2d), operation need manual, pumping two procedures.In short, resistance to compression impermeability it is low,
Waiting time length of constructing and multi-process handling is three common problems of prior art pressure fluid sealing of hole.
Invention content
It is needed for pressure fluid in rock coal bed drilling is blocked, strong, construction of a kind of short envelope body, resistance to compression impermeability etc. is provided
Wait the low resin hole packer of short time, convenience hand-manipulated, use cost.By construction waiting time be divided into plain edition (I) and soon
Curable type (II), plain edition are suitable for construction waiting time > 6h, and fast curable type is suitable for construction 0.5~6h of waiting time.
Medium-sized feature is：1 bonding rock coal wall member is the epoxy adhesive for sealing packing according to the ratio, physical mechanics
Performance requirement complies with standard the 5th article of JC887-2001；2 by glue laminated apply the component on rock coal hole wall be dual-component polyurethane it is swollen
Swollen dose, cream time > 2min, expansion rate > 400%；3, which have water resistant concurrently, oozes, send the mounting structure of hole carrier for for outer smearing
The two-component of packing 2 has the composite geo-membrane bag of intermediate isolating, the long both ends of bag coated high density polyethylene (HDPE) (HDPE) film item in 1
And it is standby there are two the HDPE film truncated cone detached, composite geo-membrane, HDPE film and HDPE truncated cone film physical and mechanical properties require symbol
The 4th article of standardization GB/T17642-2008.
II types are characterized in：Bonding rock coal wall member is the unsaturated polyester (UP) gluing that two-component seals packing according to the ratio
Agent, physical and mechanical property require to comply with standard the 6th article of JC/T989-2006；2 components for applying glue laminated on rock coal hole wall are double
Component polyurethane swelling agent, 1.5~4min of cream time, expansion rate > 400%；3 have the assembly that water resistant oozes, send hole carrier concurrently
Component is the composite geo-membrane bag for having intermediate isolating for the outer two-component for smearing packing 2 in 1, composite geo-membrane, HDPE film
It requires to comply with standard the 4th article of GB/T17642-2008 with HDPE truncated cone film physical and mechanical properties.
Seal body structure：Bag 3 is sent into drilling after predetermined position, and polyurethane swelling agent expands in bag, by the cream of bag outer surface
Shape glue laminated is spread on hole wall, and material forms solid-state sealing of hole ring cylinder through gel solidification, and the structure of sealing of hole ring cylinder can be divided into three
Component is shown in Fig. 1.(1) resist fluids pressure member is the structural film adhesive of outer boundary；(2) compressive resistance fluid permeability component is composite junction
The three layers of waterproof HDPE film and PU expanders of structure；(3) connecting elements of the impervious component of resistance to compression is glue infiltration building layer of cloth.
Material and design feature：(1) reinforcing of resist fluids pressure texture part.Sealing of hole annulated column outer boundary is viscous with rock coal hole wall
Junction is the constraint bearing for sealing body and bearing Fluid pressure effect, i.e., the position that shearing force is concentrated.The present invention using bonding stone material and
The application specific architecture glue of steel force part is as resist fluids pressure member, because on the one hand it is using chemical bond force as bonding
The cohesive material of main contributions, chemical bond force one or two of order of magnitude bigger than intermolecular force, on the other hand it is hardening time
Relatively short cohesive material has been in later stage of solidification process to construction waiting time, and cohesive force is close to maximum value.And show
There is the cementation for the cohesive material and stone material that technology uses to be mostly derived from intermolecular active force (Van der Waals force or hydrogen bond force
Deng), one or two of order of magnitude smaller than chemical bond force；On the other hand, the complete setting time of cement is 28d, to applying lower waiting time
Behavior of Hardened Cement Paste is in only soft solid state, is just in solidification initial stage, bond very little.(2) water proof of compressive resistance fluid permeability component
Property.Material permeability depends primarily on porosity.The present invention expands composite material knot using three layers of waterproof HDPE film and PU
Structure is impervious, and wherein infiltration coefficient is 10-11~-13The HDPE film of cm/s belongs to non-porous water proof material, although PU expanders are more
Porous materials, but from encrypting the impervious and closely knit consideration of moulding, in bag PU material by hole expansion rate be about 200% dress weight, density ratio
Big 4 times or so of prior art PU foam plastic densities.To construction waiting time, prior art material is all porous material, wherein
PU foamed plastics envelope volume density is about 1/4 of density in PU expansion body openings, and the osmotic coefficient ratio of flexible body Behavior of Hardened Cement Paste solidifies completely
Big 6 orders of magnitude of Behavior of Hardened Cement Paste.(3) selecting for II types rapid hardening structure glue and matching for suitable cream time, gel time PU swelling agents
System.For the requirement of engineering that construction waiting time is short, the selection of II types rapid hardening structure glue of the present invention realizes the morning of envelope pressure component
By force；The preparation of PU swelling agents meets cream time and is slightly less than the dry time at the beginning of structure glue, and it is just dry that gel time is slightly larger than structure glue
Time realizes and smoothly send hole and deposited glue.This 2 points deep sealing of holes for solving the problems, such as short construction waiting time.
Advantageous effect：The advantageous effect concentrated reflection of hole packer of the present invention seals the envelope pressure energy power of body length in unit and envelope is oozed
Ability.The present invention is determined by simulation test and prior art unit seals the envelope pressure energy power of body length and envelope oozes ability, and right
It is compared.
Sealing of hole annulated column is that uniformly distributed Fluid pressure effect is born in one end, and the other end is the hanging pillar of free end, the shearing of outer boundary
Power is equal to the product of fluid pressure and the sectional area that drills.If shearing force is uniformly distributed on shear surface, then sealing of hole annulated column resist fluids pressure energy
The expression formula of power is：
σ-is by envelope fluid maximum pressure (MPa), [τ]-sealing of hole annulated column outer boundary adhesive shear strength (MPa), L- envelopes in formula
Orifice ring column length (m), R boring radius (m).For a specific sealing of hole annulated column, dimensionless number 2L/R is constant, therefore, [τ]
It is the sole indicator of sealing of hole annulated column resist fluids pressure ability.According to Darcy's law, the table of sealing of hole annulated column compressive resistance fluid neuron network amount
It is up to formula：
Q- sealing of holes annulated column seepage discharge (m in formula3/ h), K- sealing of hole annulated column infiltration coefficients (m/s), other same formulas of symbolic significance
(1).For a specific sealing of hole annulated column, ratio 1.13 × 106σR2/ L is constant, therefore K is that sealing of hole annulated column compressive resistance fluid oozes
The sole indicator of flow.
[τ] and K values of the present invention and each pore self-sealing annulated column of the prior art are measured using simulated experiment, and then by formula (1) (2)
Convert they envelope pressure energy power and envelope ooze ability.Analogue experiment installation is shown in Fig. 2, borehole simulation steel pipe long 35cm, internal diameter 6cm；Note
Water pipe long 25cm, outer diameter 2.7cm；Infiltration receives steel pipe long 20cm, internal diameter 6cm；Seal the long 20cm of steel compression leg；Outer diameter 5.97cm；
Sealing of hole annulated column grows 10~12cm；Pressurized water grows 23~25cm.I types and the prior art PU foamed plastics sealing of hole annulated columns of the present invention
Curing time (age) is respectively 4h, 8h and for 24 hours, II types sealing of hole annulated column curing time of the present invention in borehole simulation steel pipe
0.5h, prior art Behavior of Hardened Cement Paste sealing of hole annulated column curing time 48h, 23 ° ± 2 ° of care environments temperature.Each sealing of hole of test quantity
Annulated column each age tests 3 pieces, takes its average value as measurement result.Sealing of hole annulated column, Water hydraulic static pressure loading are all derived from prototype (work
Journey is in kind), accomplish completely similar.In order to solve the Similar Problems of borehole simulation steel pipe and prototype rock coal hole, stone has been carried out first
The compression shear strength experiment of material plate-stone material version and steel plate-steel plate glue sticking, cementing and the adherency of PU foams, testpieces viscosity material
The curing time of material is 48 hours.Compression shear strength test result is glue sticking steel-steel 18.4Mpa, stone material-stone material 17.0Mpa；
Cementing steel-steel 0.68Mpa, stone material-stone material 1.36Mpa；PU foams adhere to steel-steel 0.96Mpa, stone material-stone material
0.59Mpa.Show that the ratio ruler of prototype and model shear strength is respectively gluing access n=17.0/18.4=0.92, cement gel
Tie λ n=1.36/0.68=2, PU foams adherency λ n=0.59/0.96=0.61.
Test result calculates model [τ] by formula (1), then calculates prototype [τ] n=λ n [τ] than ruler by force by cutting, and is as a result listed in table
1.Steel pipe walls are all solid wall surface in rock coal hole wall and model in prototype, and two mobile phases answer boundary property identical, meet boundary
Condition is similar.The test result of sealing of hole annulated column seepage flow calculates to obtain corresponding K value, as the K values of prototype by formula (2), is as a result listed in table 1.
1 sealing of hole annulated column outer boundary shearing strength of table and infiltration coefficient test result
Test result shows the present invention compared with prior art unit length sealing of hole annulated column, and the present invention seals body construction waiting
Time 4h, 8h, resist fluids pressure capability for 24 hours are 35 times, 46 times, 37 times of PU foams envelope body respectively；It is construction waiting time
48h Behavior of Hardened Cement Paste seals 11 times, 20 times, 23 times of body, compressive resistance fluid permeability ability is 26 times of PU foams envelope body respectively, 18 times,
5 times, be 2.9 times, 4.6 times, 4.7 times of construction waiting time 48h Behavior of Hardened Cement Paste envelope body.Hole packer of the present invention seals body effective length
0.37m, I type construction waiting time 8h envelope pressure energy power 31Mpa (bore diameter 9.5cm)~53Mpa (bore diameter 5.5cm), ooze
Saturating coefficient 1.3 × 10-7m/s；II types construction waiting time 0.5h envelope pressure energy power 15Mpa (bore diameter 12.5cm)~24Mpa
(bore diameter 7.5cm), infiltration coefficient 2.5 × 10-7m/s。
Advantage：(1) envelope body is short, and it is strong that envelope press seal oozes ability.Hole packer of the present invention seals body effective length 0.37m, construction waiting
Pressure energy 31~53Mpa of power, infiltration coefficient 1.3 × 10 are sealed in time 8h deep-7M/s, envelope body length are about prior art envelope body length
The 1/22 of (> 8m), unit envelope body length envelope pressure energy power and envelope ooze ability respectively and are 46 times and 18 times of the prior art.(2) it applies
Work waiting time is short, can carry out superficial part or deep sealing of hole.II types construction waiting time 30min of the present invention, and deep envelope can be carried out
Hole.Prior art quick-hardening cement can construct waiting time 30min sealing of hole, but be unable to deep sealing of hole；The construction of other envelope bodies waits
Time is longer than 8h.(3) manual operations is convenient and easy.Hole packer of the present invention is by 2~3 people manual operations, and the operating time is about
4min.Prior art deep sealing of hole needs to operate with two procedure of liquid pump by hand, operating time about > 10min.(4) use cost
It is low.Hole packer material of the present invention weighs about 1000~1500g, is that PU foams Feng Tixu material weigh about the 1/3~1/4 of 3500~6000g, two
Quite, i.e., use cost saves 65% or more to person's unit price than the prior art；Rubber hole packer cost higher.
Description of the drawings
Fig. 1 is resin hole packer structure chart, Fig. 2 sealing of hole aptitude tests structure drawing of device
Specific implementation mode
I type operating procedures：2~3 people manual operations.One section of liquid injection pipe is taken, by two HDPE truncated cones major parts respectively from fluid injection
It is inserted at pipe both ends；Unclosing structure poly-bag intermediate isolating and fully rubbing is held 30 times or more, and tear structure poly-bag smears part-structure glue
At the predetermined long 40cm in sealing of hole position on liquid injection pipe among two HDPE truncated cones；Open composite geo-membrane bag intermediate isolating simultaneously
It quickly rubs and holds about 30 times, the composite geo-membrane bag both ends HDPE film item adhesive tape covering after holding will be rubbed and be bundled in liquid injection pipe daub
Place；Daub is applied in composite geo-membrane bagging length range, two HDPE truncated cones slidings, which are sleeved on composite geo-membrane bag both ends, to be used in combination
Adhesive tape bundlees truncated cone microcephaly position.Later, a little structure glue is smeared in manual heat crossover side at connector coin silk, until sending sealing of hole
At bag to hole sealing depth.End liquid injection pipe be arranged one take over before just bundled with adhesive tape and rub the PU held when sending hole
Aluminium plastic membrane bag, effect are to cut stifled infiltration and support liquid injection pipe.
Since rubbing and holding composite geo-membrane bag, allow operating time 6min.
II type operating procedures：2 people manual operations.One section of liquid injection pipe is taken, by two HDPE truncated cones major parts respectively from liquid injection pipe
It is inserted at both ends；It opens rapid hardening structure poly-bag intermediate isolating and fully rubs and hold 30 times or more, tear poly-bag and part glue is put on fluid injection
It manages at the predetermined long 40cm in sealing of hole position among two HDPE truncated cones；It opens composite geo-membrane bag intermediate isolating and quickly rubs
It holds 30 times, the composite geo-membrane bag both ends HDPE film item adhesive tapes covering after holding will be rubbed and be bundled at liquid injection pipe daub；Compound
Geomembrane bagging length range applies daub, and two HDPE truncated cones slidings are sleeved on the blend compounds band binding of composite geo-membrane bag both ends
Firmly truncated cone microcephaly position.Later, a little structure glue is smeared in manual heat crossover side at connector coin silk, until sending hole sealing bag to sealing of hole
Depth.
Since rubbing and holding composite geo-membrane bag, allow operating time 4min.
Embodiment 1：Coal seam high pressure water injection prevents bump and coal and gas prominent.Bore diameter 6.5cm, water injection pipe are straight
Diameter 2.7cm, pump working pressure 15Mpa, hole sealing depth 9m, construct waiting time 8h.Using I types hole packer sealing of hole of the present invention,
The aluminum plastic film bag of intermediate isolating dispenses epoxy adhesive 300g, the long 45cm wide 22cm composite earthwork of intermediate isolating at 1: 1 according to the ratio
Film bag dispenses PU swelling agent two-component 300g, and the aluminum plastic film support pouches of intermediate isolating dispense PU swelling agent two-component 200g, by tool
Body embodiment operating process operates, actual operating time 4min, Feng Tichang 0.37m.Use polyurethane foam sealing of hole, material weight
4000g, 3 human hand works, the operation of two procedure of hydraulic pump, operating time 10min.As a result, the two compares hole packer section of the present invention
About artificial 2 people saves material and material cost 80%.
Embodiment 2：Coal seam high pressure water injection prevents bump and coal and gas prominent.Bore diameter 5.5cm, water injection pipe are straight
Diameter 2.7cm, pump working pressure 18Mpa, hole sealing depth 9m, construct waiting time 8h.Using I types hole packer sealing of hole of the present invention,
The aluminum plastic film bag of intermediate isolating dispenses epoxy adhesive 240g, the long 45cm wide 19cm composite earthwork of intermediate isolating at 1: 1 according to the ratio
Film bag dispenses PU swelling agent two-component 240g, and the aluminum plastic film support pouches of intermediate isolating dispense PU swelling agent two-component 200g, by tool
Body embodiment operating process operates, actual operating time 4min, Feng Tichang 0.37m.Use polyurethane foam sealing of hole, material weight
3200g, 3 human hand works, the operation of two procedure of hydraulic pump, operating time 10min.As a result, the two compares hole packer section of the present invention
About artificial 2 people saves material and material cost 80%.
Claims (1)
1. a kind of hole packer blocking pressure fluid in coal rock layer drilling, the hole packer are divided into plain edition by construction waiting time
With fast curable type, plain edition is suitable for construction waiting time > 6h, and fast curable type is suitable for construction 0.5~6h of waiting time, feature
It is：Plain edition hole packer seals the epoxy adhesive of packing two-component according to the ratio, and physical and mechanical property requires to comply with standard
The 5th article of JC887-2001, fast curable type hole packer seal the unsaturated polyester (UP) adhesive of packing two-component, physical mechanics property according to the ratio
It can require to comply with standard the 6th article of JC/T989-2006, the polyurethane swelling agent of the built-in two-component of hole packer, plain edition cream time
More than 2min, 1.5~4min of fast curable type cream time, the two expansion rate > 400%, hole packer include the outer ring for smearing two-component
Oxygen adhesive or unsaturated polyester (UP) adhesive and the polyurethane swelling agent of built-in two-component, the composite geo-membrane that has intermediate isolating
Bag, the long both ends of bag coated high density polyethylene (HDPE) (HDPE) film item and the polyethylene film truncated cone detached with there are two, the composite earth
Work film physical and mechanical property requires to comply with standard the 4th article of GB/T17642-2008.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510491408.8A CN106437603B (en) | 2015-08-09 | 2015-08-09 | Resin hole packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510491408.8A CN106437603B (en) | 2015-08-09 | 2015-08-09 | Resin hole packer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106437603A CN106437603A (en) | 2017-02-22 |
| CN106437603B true CN106437603B (en) | 2018-11-02 |
Family
ID=58092911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510491408.8A Active CN106437603B (en) | 2015-08-09 | 2015-08-09 | Resin hole packer |
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| CN113339043B (en) * | 2021-07-05 | 2022-04-08 | 山东科技大学 | Uniform water injection disaster prevention method for high-impact-tendency coal seam |
| CN114673469A (en) * | 2022-03-06 | 2022-06-28 | 辽宁兰特科技发展有限公司 | Semi-overlapping sleeve bag type gas drilling and sealing device |
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| WO2015094897A1 (en) * | 2013-12-19 | 2015-06-25 | Ge Oil & Gas Esp, Inc. | Method for reducing permeability of downhole motor protector bags |
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| US6619387B2 (en) * | 2001-09-12 | 2003-09-16 | Stemlock, Incorporated | Inflatable gas bag for use as a borehole plug |
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