AU2013101793A4 - Inflatable borehole plug and inflation medium - Google Patents
Inflatable borehole plug and inflation medium Download PDFInfo
- Publication number
- AU2013101793A4 AU2013101793A4 AU2013101793A AU2013101793A AU2013101793A4 AU 2013101793 A4 AU2013101793 A4 AU 2013101793A4 AU 2013101793 A AU2013101793 A AU 2013101793A AU 2013101793 A AU2013101793 A AU 2013101793A AU 2013101793 A4 AU2013101793 A4 AU 2013101793A4
- Authority
- AU
- Australia
- Prior art keywords
- propellant
- canister
- borehole plug
- inflatable borehole
- global warming
- 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.)
- Expired
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- 239000003380 propellant Substances 0.000 claims abstract description 82
- 238000010792 warming Methods 0.000 claims abstract description 37
- CDOOAUSHHFGWSA-OWOJBTEDSA-N (e)-1,3,3,3-tetrafluoroprop-1-ene Chemical compound F\C=C\C(F)(F)F CDOOAUSHHFGWSA-OWOJBTEDSA-N 0.000 claims description 24
- LVGUZGTVOIAKKC-UHFFFAOYSA-N 1,1,1,2-tetrafluoroethane Chemical compound FCC(F)(F)F LVGUZGTVOIAKKC-UHFFFAOYSA-N 0.000 claims description 21
- FXRLMCRCYDHQFW-UHFFFAOYSA-N 2,3,3,3-tetrafluoropropene Chemical compound FC(=C)C(F)(F)F FXRLMCRCYDHQFW-UHFFFAOYSA-N 0.000 claims description 21
- NPNPZTNLOVBDOC-UHFFFAOYSA-N 1,1-difluoroethane Chemical class CC(F)F NPNPZTNLOVBDOC-UHFFFAOYSA-N 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 229930195733 hydrocarbon Natural products 0.000 claims description 4
- 150000002430 hydrocarbons Chemical class 0.000 claims description 4
- 239000004215 Carbon black (E152) Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 13
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 9
- 239000000443 aerosol Substances 0.000 description 8
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 description 3
- 235000019404 dichlorodifluoromethane Nutrition 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000001273 butane Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- 239000001294 propane Substances 0.000 description 2
- SJSSFUMSAFMFNM-NSHDSACASA-N (2s)-5-(diaminomethylideneamino)-2-(phenylmethoxycarbonylamino)pentanoic acid Chemical compound NC(N)=NCCC[C@@H](C(O)=O)NC(=O)OCC1=CC=CC=C1 SJSSFUMSAFMFNM-NSHDSACASA-N 0.000 description 1
- WMFBGXXJQTWHFB-VOQLAZDYSA-N (2s,3r)-2-acetamido-n-[(2r)-1-[[(2s)-1-[benzyl(methyl)amino]-1-oxo-3-phenylpropan-2-yl]amino]-3-(1-formylindol-3-yl)-1-oxopropan-2-yl]-3-hydroxybutanamide Chemical compound C([C@H](NC(=O)[C@@H](CC=1C2=CC=CC=C2N(C=O)C=1)NC(=O)[C@@H](NC(C)=O)[C@H](O)C)C(=O)N(C)CC=1C=CC=CC=1)C1=CC=CC=C1 WMFBGXXJQTWHFB-VOQLAZDYSA-N 0.000 description 1
- YFMFNYKEUDLDTL-UHFFFAOYSA-N 1,1,1,2,3,3,3-heptafluoropropane Chemical compound FC(F)(F)C(F)C(F)(F)F YFMFNYKEUDLDTL-UHFFFAOYSA-N 0.000 description 1
- VOPWNXZWBYDODV-UHFFFAOYSA-N Chlorodifluoromethane Chemical compound FC(F)Cl VOPWNXZWBYDODV-UHFFFAOYSA-N 0.000 description 1
- 239000004338 Dichlorodifluoromethane Substances 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- DQYBDCGIPTYXML-UHFFFAOYSA-N ethoxyethane;hydrate Chemical compound O.CCOCC DQYBDCGIPTYXML-UHFFFAOYSA-N 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- GTLACDSXYULKMZ-UHFFFAOYSA-N pentafluoroethane Chemical compound FC(F)C(F)(F)F GTLACDSXYULKMZ-UHFFFAOYSA-N 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
- F42D1/18—Plugs for boreholes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/127—Packers; Plugs with inflatable sleeve
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/127—Packers; Plugs with inflatable sleeve
- E21B33/1277—Packers; Plugs with inflatable sleeve characterised by the construction or fixation of the sleeve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
- F42D1/22—Methods for holding or positioning for blasting cartridges or tamping cartridges
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Geochemistry & Mineralogy (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Medicinal Preparation (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
An inflatable borehole plug with a sealed gas tight container containing a pressure canister, said pressure canister containing a non-flammable fluorinated propellant with a global warming potential below.
Description
Inflatable Borehole Plug and Inflation Medium
Field of the Invention
The present invention relates to borehole plugs of the types described in AU595887, US 5,346,005 and AU4,846,278 and the propellant for inflation of these borehole plugs, more particularly, to low vapour pressure non flammable propellant for aerosol cans used for the inflation of borehole plugs,
Background
Typically explosive charges for mining and other excavation activities are placed in boreholes. Frequently such charges are supported at some point below the surface that is at some desired depth in the borehole. Inflatable plugs in the form of gas tight bags 15 are used for this purpose. A plug pressure release valve is activated then the plug is lowered to a desired depth and Inflated such that it becomes firmly engaged with the sides of the borehole.
Typically, inflation is by means of an aerosol canister attached to the bag and arranged 20 so as to discharge its pressurised contents during the descent of the bag down the borehole.
A common problem experienced with such an arrangement is that in some situations the high ambient temperatures can raise the internal pressure of the aerosol canister above 25 the rated capacity of the aerosol canister. A second problem is that common aerosol propellants are flammable increasing the hazards associated with the use and storage of the Inflatable borehole plugs.
Typically refrigerant gases are used as non flammable propellants HFC-I34a, 1,1,1. 30 2-tetrafluoroethane, HFC-152a, HFC125 and alike. There are also those propellants that have been deemed to affect the ozone layer such as CFC-12, R-11.R-12, R-500, R40, Dichlorodifluoromethane, HCFC-22.HFC-22, HFC-123, HFC-227 and alike. It has been realised lately that HFC-134a has a high global warming potential.
It is with this background that the present invention has been developed.
SUBSTITUTE SHEET (RULE 26) RO/AU
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- 2 Reference to prior art documents is not an admission that they form part of the common general knowledge of a skilled person in any jurisdiction.
Summary of the Present Invention
The invention relates to a more reliable and safer gas or liquid propellant for use in borehole plugs.
According to one aspect of the present invention there a gas or liquid propellant that is non flammable, non toxic, has a low vapour pressure and low global warming potential.
According to an aspect of the present invention there is an inflatable borehole plug with a sealed gas tight container containing a pressure canister, said pressure canister containing a non-flammable fluorinated propellant with a global warming potential below 500.
In an embodiment the propellant has a global warming potential below 200,100, 50, 20 or 10.
In an embodiment the propellant comprises HFO-1234ze, HFO-1234yf or a mixture of both. In an example embodiment the propellant comprises about equal amounts of HFO25 1234ze and HFO-1234yf.
In an embodiment the propellant comprises a mixture of a low global warming potential fluorinated propellant and R-134a.
In an embodiment the propellant comprises about 34%, 13%, 6.5%, 3.2% or 1 % by weight R-134a.
In an embodiment the propellant comprises a mixture of a low global warming potential fluorinated propellant and R-152a.
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-3ln an embodiment the propellant comprises about 20%, 15%, 12%, 10%, 8%, 6%, or 4% by weight R-152a.
In an embodiment the propellant comprises HFO-1233zd.
In an embodiment the propellant also contains a hydro carbon or other forms of fluid.
In an embodiment the propellant comprises dimethyl ethane.
In an embodiment the canister also contains water.
According to another aspect of the present invention there is a method of plugging a borehole comprising inflating a borehole plug by a non-flammable flow of gas or liquid from a canister sealed within a gas tight bag or bladder; said method including the steps of:
a) providing an inflatable borehole plug as defined above;
b) operating a pressure release mechanism so as to release the propellant from the canister into the inflatable bag;
c) lowering or moving inflatable borehole plug into position; and
d) holding the inflatable borehole plug in position until the inflatable borehole plug has inflated and engaged the walls of the borehole.
According to another aspect of the present invention there is a method of inflating a borehole plug by a non-flammable flow of gas or liquid from a canister sealed within a gas tight bag or bladder; said method including the steps of:
e) providing an inflatable borehole plug according to any of the previous claims;
f) operating a pressure release mechanism so as to release the propellant from the canister into the inflatable bag;
g) lowering or moving inflatable borehole plug into position; and
h) holding the inflatable borehole plug in position until the inflatable borehole plug has inflated and engaged the walls of the borehole.
In this specification the terms “having”, “comprising” or “comprises” are used inclusively and not exclusively or exhaustively.
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-4Description of Drawings
In order to provide a better understanding of the present invention preferred embodiments will now be described, byway of example only, with reference to the accompanying drawings, in which:
Figure 1 is a plan view of an inflatable borehole plug consists of a gas tight bladder or bag (1) with a pressure canister or aerosol can (3) sealed inside the gas tight bladder (1) usually by means of heat sealing or welding (2) of the gas tight bladder.
The pressure canister or aerosol can is filled with a suitable propellant, as described below, and in some cases a further liquid that may delay the release of propellant or increase the density of the propellant. The inflatable borehole is operated via a latch (4) on the pressure canister or aerosol can. Thereby releasing the inflating agent and thus inflating the borehole plug.
Such further liquid may be for example, water, or dimethyl ether, or a combination, or other of the liquids described in AU656051.
After operation of the latch (4) the inflatable borehole plug is usually lowered into the borehole on a string or similar device and held in place until the inflatable plug inflates and secures itself against the walls of the borehole.
Description of Embodiments of the Invention
According to an embodiment of the present invention there is a low vapour pressure non flammable propellant used in an inflatable borehole plug which uses a pressurised canister such as an aerosol can to inflate the borehole plug. Suitable Inflatable borehole plugs are described in AU 656051, the contents of which are incorporated herein by reference.
The high global warming potential and/or ozone depletion potential of prior propellants has been recognised by the inventor as needing redress.
Global warming potential (GWP) is an index for estimating relative global warming
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-5contribution due to atmospheric emission of a kilogram of a particular greenhouse gas compared to emission of a kilogram of carbon dioxide. GWP can be calculated for different time horizons showing the effect of atmospheric lifetime for a given gas. The GWP for the 100 year time horizon is commonly the value referenced. For mixtures, a weighted average can be calculated based on the individual GWPs for each component.
The inventor has identified low GWP fluorinated propellants as suitable propellants for use in inflatable borehole plugs. In particular the inventor has identified that a nonflammable fluorinated propellant, with a global warming potential below 500, is suitable for use in a pressure canister for inflation of an inflatable borehole plug. Further the inventor has identified that a non-flammable fluorinated propellant with a global warming potential below 200 is suitable. Further the inventor has identified that a non-flammable fluorinated propellant with a global warming potential below 100 is suitable. Further the inventor has identified that a non-flammable fluorinated propellant with a global warming potential below 50 is suitable. Further the inventor has identified that a non-flammable fluorinated propellant with a global warming potential below 20 is suitable. Further the inventor has identified that a non-flammable fluorinated propellant with a global warming potential below 10 is suitable. Further the inventor has identified that a non-flammable fluorinated propellant with a global warming potential of about 5 is suitable.
Trans-1,3,3,3-tetrafluoropropene, also known as HFO-1234ze and sold by Honeywell™ and 2,3,3,3-tetrafluoropropene, also known as HFO-1234yf and sold by Honeywell™ are examples of such a propellant. HFO-1234ze has a GWP of 6. HFO-1234yf has a GWP of
4. These fluorinated propellants also have no appreciable ozone depletion potential.
Additionally, HFO-1234ze is non-flammable, meeting the additional requirement of a nonflammable propellant. The mildly flammable HFO-1234yr, in mixtures with HFO-1234ze and other non-flammable fluids, may also be non-flammable, so blends of these propellants also meet this requirement. Equal weights of HFO-1234ze and HFO-1234yf with have a GWP of about 5.
Mixtures including 1,1,1,2-tetrafluoroethane, also known as HFC-134a and R-134a, can be used to ensure that the vapour pressure is not too low, while ensuring that the mixture remains non-flammable, at the expense of a higher global warming potential. R-134a has a GWP of 1430.
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-6Examples of suitable mixtures, by weight
HFO-1234ze 33% HFO-1234yf 33% R-134a 34%. This will have a GWP of about 490.
HFO-1234ze 43% HFO-1234yf 44% R-134a 13%. This will have a GWP of about 190.
HFO-1234ze 45% HFO-1234yf 48.5% R-134a 6.5%. This will have a GWP of about 100.
HFO-1234ze 48.3% HFO-1234yf 48.5% R-134a3.2%. This will have a GWP of about 50.
HFO-1234ze 49.5% HFO-1234yf 49.5% R-134a 1%. This will have a GWP of about 20.
Mixtures including 1,1-difluoroethane, also known as HFC-152a and R-152a, can be used to ensure that the vapour pressure is not too low while lowering the GWP. It may be added in combination with R-134a to lower the GWP in quantities to remain non-flammable, at the expense of a higher global warming potential. R-152a has a GWP of 120.
Examples of suitable mixtures, by weight
HFO-1234ze 40% HFO-1234yf 40% R-152a 10% R-134a 10%. This will have a GWP of about 170.
HFO-1234ze 80% R-152a 20%. This will have a GWP of about 30.
HFO-1234ze 44% HFO-1234yf 44% R-152a 12%. This will have a GWP of about 20.
HFO-1234ze 48% HFO-1234yf 48% R-152a 4%. This will have a GWP of about 10.
Mixtures including dimethyl ether, also known as DME and R-E170, can be used to ensure that the vapour pressure is not too low. DME has a GWP of about 2. DME can be used with about 7% ethanol to dissolve water, thereby reducing the flammability of the mixture. In an embodiment the water is about 10-40% by weight. In an embodiment the water is about 15-35% by weight. In an embodiment the water is about
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-720-30% by weight. Use of DME and water is described in Australian Patent 763474, the contents of which are incorporated herein by reference.
Propane and/or butane may be used so that the vapour pressure is not too low. In these embodiments the HFO as a base, R134a to offset flammability if DME, propane, butane (or other hydrocarbons) or R152 is used.
1-Choro-3,3,3-trifluropropane also known as HFO-1233zd may be used as the low GWP fluorinated propellant, with a GWP of 7. Other hydroflouroolefins (HFOs) or combinations may also be used as the low GWP fluorinated propellant.
In an embodiment the ratio of HFO-1234yf to HFO-1234ze is in the range of from about 0.01 to about 100. The HFO-1234yf to HFO-1234ze ratio or the HFO-1234ze to HFO1234yf ratio may be about 1, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2, 2.2, 2.4, 2.6, 2.7,
2.8, 3,3.5, 4, 4.5, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 22, 24, 26, 28, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, or 100.
In an embodiment the ratio of HFO-1234yf and/or HFO-1234ze with a mixture thereof to R-134a is in the range of from about 3 to about 100 and more particularly in the range of from about 3 to about 20. The ratio can be about 2.9, 3.0, 3.1 , 3.2, 3.3, 3.4, 3.5, 3.6, 3.7,
3.8, 3.9, 4.0, 4.1 , 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9, 5.0, 5.1 , 5.2, 5.3, 5.4, 5.5, 5.6,5.7,
5.8, 5.9, 6.0, 6.1 , 6.2, 6.3, 6.4, 6.5, 6.6, 6.7, 6.8, 6.9, 7.0, 7.1 , 7.2, 7.3, 7.4, 7.5, 7.6,7.7,
7.8, 7.9, 8.0, 8.1 , 8.2, 8.3, 8.4, 8.5, 8.6, 8.7, 8.8, 8.9, 9.0, 9.1 , 9.2, 9.3, 9.4, 9.5, 9.6,9.7,
9.8, 9.9, 10.0, 10.1 , 10.2, 10.3, 10.4, 10.5, 10.6, 10.7, 10.8, 10.9, 11.0, 11.1 , 11.2, 11.3,
11.4, 11.5, 11.6, 11.7, 11.8, 11.9, 12.0, 12.1 , 12.2, 12.3, 12.4, 12.5, 12.6, 12.7, 12.8,
12.9, 13.0, 13.1 , 13.2, 13.3, 13.4, 13.5, 13.6, 13.7, 13.8, 13.9, 14.0, 14.1 , 14.2, 14.3,
14.4, 14.5, 14.6, 14.7, 14.8, 14.9, 15.0, 15.1 , 15.2, 15.3, 15.4, 15.5, 15.6, 15.7, 15.8,
15.9, 16.0, 16.1 , 16.2, 16.3, 16.4, 16.5, 16.6, 16.7, 16.8, 16.9, 17.0, 17.1 , 17.2, 17.3,
17.4, 17.5, 17.6, 17.7, 17.8, 17.9, 18.0, 18.1 , 18.2, 18.3, 18.4, 18.5, 18.6, 18.7, 18.9, 19.0, 19.1 , 19.2, 19.3, 19.4, 19.5, 19.6, 19.7, 19.8, 19.9, or 20.0.
One aspect of the present invention is to provide a propellant with a global warming potential of less than 500, less than 400, less than 300, or less than 150, less than 100, less than 90, less than 80, less than 70, or less than 60, less than 50, less than 40, less than 30, or less than 20, less than 10, less than 7, 6, about 5, or 4.
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-8Advantages of the present invention are that inflatable borehole plugs can be suitably inflated with a propellant that is non flammable or has low flammability and contributes significantly less to global warming when the inflation medium is released to the atmosphere.
The above describes only some embodiments of the present invention and modifications, obvious to those skilled in the art, can be made thereto without departing from the scope and spirit of the present invention. Modifications may be made to the present invention 10 with the context of that described and shown in the drawings. Such modifications are intended to form part of the invention described in this specification.
Claims (37)
1. An inflatable borehole plug with a sealed gas tight container containing a pressure canister, said pressure canister containing a non-flammable fluorinated propellant with a global warming potential below 500.
2. An inflatable borehole plug as claimed in Claim 1, wherein the propellant has a global warming potential below 200.
3. An inflatable borehole plug as claimed in Claim 1, wherein the propellant has a global warming potential below 100.
4. An inflatable borehole plug as claimed in Claim 1, wherein the propellant has a global warming potential below 50.
5. An inflatable borehole plug as claimed in Claim 1, wherein the propellant has a global warming potential below 20.
6. An inflatable borehole plug as claimed in Claim 1, wherein the propellant has a global warming potential below 10.
7. An inflatable borehole plug as claimed in Claim 1, where the propellant comprises HFO-1234ze, HFO-1234yf or a mixture of both.
8. An inflatable borehole plug as in Claim 2, where the propellant comprises about equal amounts of HFO-1234ze and HFO-1234yf.
9. An inflatable borehole plug as in Claim 1 where the propellant comprises a mixture of a low global warming potential fluorinated propellant and R-134a.
10. An inflatable borehole plug as in Claim 1 where the propellant comprises about 34% by weight R-134a.
11. An inflatable borehole plug as in Claim 1 where the propellant comprises about 13% by weight R-134a.
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- ΙΟΙ 2. An inflatable borehole plug as in Claim 1 where the propellant comprises about 6.5% by weight R-134a.
13. An inflatable borehole plug as in Claim 1 where the propellant comprises about 3.2% by weight R-134a.
14. An inflatable borehole plug as in Claim 1 where the propellant comprises about 1% by weight R-134a.
15. An inflatable borehole plug as in Claim 1 where the propellant comprises a mixture of a low global warming potential fluorinated propellant and R-152a.
16. An inflatable borehole plug as in Claim 1 where the propellant comprises about 20% by weight R-152a.
17. An inflatable borehole plug as in Claim 1 where the propellant comprises about 12% by weight R-152a.
18. An inflatable borehole plug as in Claim 1 where the propellant comprises about 10% by weight R-152a.
19. An inflatable borehole plug as in Claim 1 where the propellant comprises about 4% by weight R-152a.
20. An inflatable borehole plug as in Claim 1 where the propellant comprises HFO1233zd.
21. An inflatable borehole plug as in Claim 1 where the propellant also contains a hydro carbon or other forms of liquid.
22. An inflatable borehole plug as in Claim 1 where the propellant comprises dimethyl ethane.
23. An inflatable borehole plug as in Claim 1 where the canister also contains water.
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24. A method of inflating a borehole plug by a non-flammable flow of gas or liquid from a canister sealed within a gas tight bag or bladder; said method including the steps of:
i) providing an inflatable borehole plug according to any of the previous claims;
j) operating a pressure release mechanism so as to release the propellant from the canister into the inflatable bag;
k) lowering or moving inflatable borehole plug into position; and
l) holding the inflatable borehole plug in position until the inflatable borehole plug has inflated and engaged the walls of the borehole.
25. A pressurised canister suitable for inflation of an inflatable borehole plug, said pressure canister containing a non-flammable fluorinated propellant with a global warming potential below 500.
26. A canister as claimed in Claim 25, wherein the propellant has a global warming potential below 200.
27. A canister as claimed in Claim 25, wherein the propellant has a global warming potential below 100.
28. A canister as claimed in Claim 25, wherein the propellant has a global warming potential below 50.
29. A canister as claimed in Claim 25, wherein the propellant has a global warming potential below 20.
30. A canister as claimed in Claim 25, wherein the propellant has a global warming potential below 10.
31. A canister as claimed in Claim 25, where the propellant comprises HFO-1234ze, HFO-1234yf or a mixture of both.
32. A canister as claimed in Claim 25, where the propellant comprises about equal amounts of HFO-1234ze and HFO-1234yf.
WO 2013/188906
PCT/AU2013/000642
2013101793 18 Jun 2013
33. A canister as claimed in Claim 25, where the propellant comprises a mixture of a low global warming potential fluorinated propellant and R-134a.
5
34. A canister as claimed in Claim 25, where the propellant comprises a mixture of a low global warming potential fluorinated propellant and R-152a.
35. A canister as claimed in Claim 25, where the propellant comprises HFO-1233zd.
10
36. A canister as claimed in Claim 25, where the propellant also contains a hydro carbon or other forms of liquid.
37. A canister as claimed in Claim 25, where the propellant comprises dimethyl ethane.
38. A canister as claimed in Claim 25, where the canister also contains water.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2012100894A AU2012100894A4 (en) | 2012-06-18 | 2012-06-18 | Inflation Medium |
| AU2012100894 | 2012-06-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2013101793A4 true AU2013101793A4 (en) | 2019-05-02 |
Family
ID=46634764
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2012100894A Expired AU2012100894A4 (en) | 2012-06-18 | 2012-06-18 | Inflation Medium |
| AU2013277923A Pending AU2013277923A1 (en) | 2012-06-18 | 2013-06-18 | Inflatable borehole plug and inflation medium |
| AU2013101793A Expired AU2013101793A4 (en) | 2012-06-18 | 2013-06-18 | Inflatable borehole plug and inflation medium |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2012100894A Expired AU2012100894A4 (en) | 2012-06-18 | 2012-06-18 | Inflation Medium |
| AU2013277923A Pending AU2013277923A1 (en) | 2012-06-18 | 2013-06-18 | Inflatable borehole plug and inflation medium |
Country Status (2)
| Country | Link |
|---|---|
| AU (3) | AU2012100894A4 (en) |
| WO (1) | WO2013188906A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110591652A (en) * | 2019-09-12 | 2019-12-20 | 珠海格力电器股份有限公司 | Heat transfer composition and heat exchange system |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2013360017A1 (en) * | 2012-12-10 | 2015-07-09 | Mti Group Pty Ltd | Temperature sensitive indicia for dangerous goods |
| CN108533213B (en) * | 2018-05-28 | 2023-06-23 | 长江岩土工程有限公司 | Device for plugging and exposing drilling holes in bearing water of covering layer and plugging method of device |
| CN111322918A (en) * | 2020-03-20 | 2020-06-23 | 威海埃姆提爱矿山设备有限公司 | Gas of gas spacer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR9205162A (en) * | 1991-12-24 | 1993-06-29 | Specialised Polyurethane Appli | INFLATABLE SHUTTER SET FOR DRILLING HOLES, COMBINATION AND PROCESS OF POSITIONING THE SUCH SHUTTER SET |
| AU2005100115A4 (en) * | 2005-02-09 | 2005-03-24 | Jadefoil | Inflation Medium |
-
2012
- 2012-06-18 AU AU2012100894A patent/AU2012100894A4/en not_active Expired
-
2013
- 2013-06-18 AU AU2013277923A patent/AU2013277923A1/en active Pending
- 2013-06-18 AU AU2013101793A patent/AU2013101793A4/en not_active Expired
- 2013-06-18 WO PCT/AU2013/000642 patent/WO2013188906A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110591652A (en) * | 2019-09-12 | 2019-12-20 | 珠海格力电器股份有限公司 | Heat transfer composition and heat exchange system |
| WO2021047231A1 (en) * | 2019-09-12 | 2021-03-18 | 珠海格力电器股份有限公司 | Heat transfer composition and heat exchange system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013188906A1 (en) | 2013-12-27 |
| AU2012100894A4 (en) | 2012-08-09 |
| AU2013277923A1 (en) | 2015-02-05 |
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