WO2015009213A1 - Method for boring holes and installing collection pipes in holes - Google Patents
Method for boring holes and installing collection pipes in holes Download PDFInfo
- Publication number
- WO2015009213A1 WO2015009213A1 PCT/SE2014/000099 SE2014000099W WO2015009213A1 WO 2015009213 A1 WO2015009213 A1 WO 2015009213A1 SE 2014000099 W SE2014000099 W SE 2014000099W WO 2015009213 A1 WO2015009213 A1 WO 2015009213A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hole
- bedrock
- accordance
- casing
- collection pipe
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 52
- 238000005553 drilling Methods 0.000 claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000012530 fluid Substances 0.000 claims abstract description 6
- 238000005192 partition Methods 0.000 claims abstract description 4
- 239000003566 sealing material Substances 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000009527 percussion Methods 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 7
- 239000004927 clay Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
- 235000020681 well water Nutrition 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing 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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
- E21B4/14—Fluid operated hammers
Definitions
- the present invention concerns a method for boring holes and the installation of collection pipes in the bored holes, in accordance with the claims.
- ground source heat pump systems geothermal heat pump, downhole heat, borehole heat
- geothermal heat pump downhole heat pump
- borehole heat borehole heat
- one or more holes are drilled in the bedrock at the point of construction of the geothermal heating system.
- at least one collection pipe, or other type of collector is partially inserted down. After the collection pipe is partially inserted into the hole, it is then connected to a ground heat pump included in the geothermal heating system that is commonly located above ground.
- a further problem with the installation of casing and the like is that it consists of pipes which are welded together, resulting in significantly longer time being required for joining of the casing pipes compared with using the method according to the present patent application.
- a further problem with existing methods for installing geothermal heating and the like is caused by the casing being left in the ground after the hole in the ground is drilled and the collection pipe is installed (connected) in the hole. The costs for casing pipes, especially if the depth down to the bedrock from the ground surface is great, will therefore be high or very high. There is thus a need for a method that reduces the costs associated with casing pipes.
- Drilling holes in the ground and in bedrock is previously known in a number of different variations of equipment and methods.
- SE527590 describes a drilling device for boring holes in bedrock.
- the drilling device in accordance with its description differs substantially from the present method and device.
- the design according to its description does not include a water driven hammer.
- SE531106 describes a variant of a sealing member designed to separate sections within an elongated hole.
- the design differs from the present invention. For example, its description does not describe a method for drilling boreholes in the ground. Further, its description does not include a method for sealing the hole above the seal with concrete in accordance with the present application.
- SE429375 describes a variant of a method to utilize heat energy in well water from a drilled borehole.
- the device and method in accordance with its description differs greatly from the design and method in accordance with the present patent application.
- SE391373 describes a variant of a sealing device to close off the connection between parts of bedrock borehole at different levels.
- the design in accordance with its description differs greatly from the design and method in accordance with the present patent application. For example, its description does not include a similar method drilling boreholes and installing collection pipes.
- SE444127 describes a variant of a pressure fluid driven sinker drill that includes a hammer drill bit. Its description does not describe a method in accordance with the present patent application. Purpose of the Invention
- the main purpose of the present invention is to create an improved method and device for solving or reducing at least one of the above mentioned problems.
- the purpose is achieved with a method in accordance with the claims. Detailed Description of the Invention
- the present invention relates to a method of boring one or more holes and in the bored hole (or holes) installing at least one collection pipe (collector), in accordance with the present application.
- the method may preferably be used in the installation of ground source heat pump systems (geoexchange, borehole, geothermal systems) and the like. It is conceivable that the method be used in other types of applications and methods or parts of methods.
- collector in geothermal applications preferably refers to collection pipe or the like.
- the collector consists of another suitable for the purpose collector.
- the drilling equipment may include a drilling rig or similar.
- Unique to the present equipment is that it is comprised of a percussion (hammer) device and/or vibration generating unit and at least one pressure fluid driven bore hammer (sinker drill or similar) which is preferably driven by pressurized water.
- a unique feature of the present method is that pipe is inserted into the ground by rotation of the casing while the casing is affected by percussion (vibrations) from a hammer (or a vibration generating unit) included in the drilling rig.
- some variant of a drill bit with through holes in the center (pronounced of a hole cutter bit) is used during insertion of the casing pipe.
- a large part of the material in the borehole is pressed into the surrounding ground.
- casing pipe which may be connected together and disconnected are used in the method for inserting casing pipe into the ground.
- this is accomplished by the casing pipes being threaded at their ends.
- the one end of the casing pipe includes external thread and the other end of the casing pipe includes an internal thread.
- This allows an internally threaded portion of a casing pipe and an externally threaded portion in another casing pipe to be screwed together.
- the pipes may be connected together with another for the purpose suitable technique.
- the required number of casing pipes are connected together and inserted (driven) into the ground until the casing pipe reaches the bedrock.
- the pipe is also inserted down a stretch into the bedrock.
- the method also leaves a length, which is suitable for the purpose, of the uppermost casing pipe above the ground surface.
- a drill bit is inserted down through the casing pipe down to the bedrock.
- a hole in the bedrock is bored to the desired depth with the drill bit.
- Unique to the present method is that the rotation of the drill is accomplished with a hydraulic drive and that the percussion function is achieved by a bore hammer, sinker drill, or similar, which for example, includes a hammer drill bit which is preferably powered by pressurized water. This means that the aforementioned problem regarding risk of contamination of the hole with hydraulic fluid, or other inappropriate substances, essentially no longer exists.
- a suitable length, relative to the borehole depth, of the collection pipe is inserted into the borehole.
- at least one sealing member is connected to the collection pipe.
- the seal is inserted with the collection pipe at a level that is suitable for the purpose.
- the seal is intended to partition the borehole into at least one upper section and at least one lower section.
- the casing pipe is removed from the hole.
- the hole by way of the relatively loose material above the bedrock is then filled by the ground around the hole. If needed ground material may be filled into the hole.
- the collection pipe is then connected with known technology to a known heat pump or the like included in the geothermal heating equipment.
- equipment and any surplus material are preferably removed from the site of the borehole and the installation site of the collection pipe.
- the most important advantage is that at least one of the above disadvantages of known types of methods for boring holes, and installing collection pipes in the bored holes is alleviated.
- the present method also has the advantage of having low noise emissions and low fuel consumption.
- the method also has the advantage of the casing pipes being reused and thus the cost for them is avoided.
- the method further includes relatively light pipe and hammer, which means that the amount of heavy lifting that needs to be performed is substantially reduced.
- the method also eliminates or substantially eliminates the risk that pressure accumulates in the cracks under buildings.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (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)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE1300498A SE1300498A1 (en) | 2013-07-19 | 2013-07-19 | Procedure for drilling holes and installing collector hose in the hole |
SESE1300498-1 | 2013-07-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015009213A1 true WO2015009213A1 (en) | 2015-01-22 |
Family
ID=52346539
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE2014/000099 WO2015009213A1 (en) | 2013-07-19 | 2014-07-18 | Method for boring holes and installing collection pipes in holes |
Country Status (2)
Country | Link |
---|---|
SE (1) | SE1300498A1 (en) |
WO (1) | WO2015009213A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108194025A (en) * | 2017-11-08 | 2018-06-22 | 中国石油天然气股份有限公司 | Method for lowering oil pipe of gas well without killing well |
US11313192B2 (en) | 2017-11-08 | 2022-04-26 | Petrochina Company Ltd. | Method for lowering oil pipe in gas well without well-killing, soluble bridge plug and material preparation method thereof |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3134177A1 (en) * | 1981-08-28 | 1983-03-17 | Siemens AG, 1000 Berlin und 8000 München | Heating or cooling arrangement with a heat pump |
WO2005003648A1 (en) * | 2003-07-03 | 2005-01-13 | Enlink Geoenergy Services, Inc. | A method of constructing a geothermal heat exchanger |
WO2010053424A1 (en) * | 2008-11-10 | 2010-05-14 | Pemtec Ab | System for exchanging energy with a ground |
-
2013
- 2013-07-19 SE SE1300498A patent/SE1300498A1/en not_active Application Discontinuation
-
2014
- 2014-07-18 WO PCT/SE2014/000099 patent/WO2015009213A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3134177A1 (en) * | 1981-08-28 | 1983-03-17 | Siemens AG, 1000 Berlin und 8000 München | Heating or cooling arrangement with a heat pump |
WO2005003648A1 (en) * | 2003-07-03 | 2005-01-13 | Enlink Geoenergy Services, Inc. | A method of constructing a geothermal heat exchanger |
WO2010053424A1 (en) * | 2008-11-10 | 2010-05-14 | Pemtec Ab | System for exchanging energy with a ground |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108194025A (en) * | 2017-11-08 | 2018-06-22 | 中国石油天然气股份有限公司 | Method for lowering oil pipe of gas well without killing well |
US11313192B2 (en) | 2017-11-08 | 2022-04-26 | Petrochina Company Ltd. | Method for lowering oil pipe in gas well without well-killing, soluble bridge plug and material preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
SE1300498A1 (en) | 2015-01-20 |
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