US20130269939A1 - Method And Apparatus For Closure Of An Earth Borehole - Google Patents

Method And Apparatus For Closure Of An Earth Borehole Download PDF

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Publication number
US20130269939A1
US20130269939A1 US13/882,549 US201113882549A US2013269939A1 US 20130269939 A1 US20130269939 A1 US 20130269939A1 US 201113882549 A US201113882549 A US 201113882549A US 2013269939 A1 US2013269939 A1 US 2013269939A1
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US
United States
Prior art keywords
borehole
cavity
ceiling
sealing surface
expandable
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.)
Abandoned
Application number
US13/882,549
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English (en)
Inventor
Joachim Geyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Checkpoint ABC GmbH
Original Assignee
Checkpoint ABC GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Checkpoint ABC GmbH filed Critical Checkpoint ABC GmbH
Assigned to CHECKPOINT A-B-C GMBH reassignment CHECKPOINT A-B-C GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GEYER, JOACHIM
Publication of US20130269939A1 publication Critical patent/US20130269939A1/en
Abandoned legal-status Critical Current

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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
    • E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
    • 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
    • E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
    • 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
    • E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
    • E21B33/136—Baskets, e.g. of umbrella type
    • 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
    • E21B4/18—Anchoring or feeding in the borehole

Definitions

  • This invention concerns a method and an apparatus for closing an earth borehole, wherein an expandable closure body is inserted into the earth borehole and expanded in its diameter in order to seal the leak.
  • Subterranean raw materials such as oilfields and gas springs are usually reached via boreholes, which are drilled vertically or diagonally through the various layers of earth before reaching the raw materials.
  • boreholes can thereby be inserted from the surface, deep into the ground or to the bottom of the sea.
  • a ‘Blowout-Preventer’ is usually installed at the top end of any borehole (or a continuing piece of piping originating from it), with which the borehole can be closed off.
  • a valve mechanism is in place within the Blowout-Preventer that will only be open if set to do so specifically but will otherwise automatically close. Problems arise, if this closure mechanism fails as a result of damage or any leaks are present between the blowout preventer and the borehole near the junction of the borehole at the surface.
  • the objective underlying the present invention is to provide for an improved process as well as an improved apparatus, in order to avoid the above explained problems and to further develop the process and apparatus in an advantageous manner.
  • this objective is achieved by a method for closing an earth borehole, wherein an expandable closure body is introduced into the borehole and is expanded in its circumference to close the borehole, characterized in that at least part of the closure body is moved out of the lower end the borehole, and expanded within earth cavity, and, with an axially sealing surface, it is urged from below against the ceiling of the cavity surrounding the borehole.
  • the present invention is an apparatus for closing and sealing an earth borehole, comprising an expandable closing device that, in the collapsed state, has a smaller diameter than the borehole, characterized in that said closing device is provided with an axially sealing surface at an expandable sealing portion, whose diameter in the expanded state, is bigger than the borehole circumference, and a reversible feeding drive is provided for moving the closing device forwardly beyond the end of the earth borehole into the cavity below the borehole, and for moving the closing device backwards with the axial sealing surface being urged against the ceiling surrounding the borehole after expansion of said sealing portion.
  • the closure body at least a part thereof, is moved beyond the lower end of the borehole to enter into the raw material filled cavity, and is expanded within the cavity below the borehole and, with an axially sealing surface, is urged from below against the cavity's sealing surrounding the borehole.
  • the expandable part has an expandable portion with an axially sealing surface which, once expanded, has a diameter significantly greater than the diameter of the borehole.
  • a reversible feed motion or advancing drive is provided.
  • This drive allows the end of the device first being inserted into the cavity to allow the device to expand, before retracting it so that the expanded device sits tightly against the borehole thereby sealing it off.
  • both erosions within the borehole wall or axial fixation issues are no longer an issue.
  • the seal will be enforced by increasing pressures within the cavity, as it is this pressure exhibited by the liquid or gas within the cavity which will press the device against the borehole thereby sealing it off. This sealing pressure against the ceiling of the cavity surrounding the borehole, will essentially be running parallel to the longitudinal axis of the borehole.
  • Our device will not be expanded in enlarged areas within the borehole but instead it will be driven all the way into the cavity containing the liquid or gaseous raw materials to be accessed. It will then be expanded and reversed against the ceiling of the cavity sealing off the borehole.
  • the ceilings of such cavities tend to be quite even and according to its slope, will be close to perpendicular to the borehole.
  • those parts of the cavity are usually drilled into, where the angle of the borehole to the cavity ceiling will be between 70-100 degrees but preferably 80-100 degrees or in perfect conditions, 90 +/ ⁇ 5 degrees. This means that the borehole will be nearly perpendicular to the ceiling of the raw material containing cavity, which is an advantage for our device, which can hence exhibit its maximal axial sealing ability.
  • the sealing of the borehole is hence exclusively achieved by axial (i.e. in the direction of the borehole) pressure pushing our closing device's expandable part against the cavity ceiling. This is achieved by the retraction of the closing device pulling the expandable part backwards towards the borehole as well as the pressure exhibited by the raw material pushing it against the ceiling surrounding the borehole.
  • the closing device When expanded, the closing device will have a sufficiently big axial pressure impingement area, which will be facing away from the cavity ceiling. This impingement area will be running close to parallel to the cavity ceiling and/or have an even surface so that the pressure exhibited by the raw material will exhibit a mainly axial force onto our closing device.
  • the impingement area is sufficiently big and constructed in a way that it will be using the pressure exhibited by the raw material to push the sealing area of the closing device sufficiently tight against the ceiling of the cavity.
  • the previously mentioned expandable sealing part of the closing device can essentially be constructed and be expanded in several ways.
  • This can be a collapsible, hinged or folding umbrella—like element, whose surrounding margins will be the sealing area.
  • a hinged, unfolding umbrella element With such a hinged, unfolding umbrella element, a sealing surface area much bigger than the borehole will be achieved.
  • the risk of further leaks is much smaller as it will be unlikely to be affected by erosions surrounding the borehole.
  • a big surface impingement area is achieved against which the raw material will be pushing—this will push the sealing device closely against the cavity ceiling.
  • the closing device and/or its expandable sealing part are constructed as such, that the axial sealing surface (under the pressure of the raw material) will be locked into the ceiling, scraping or digging in a little.
  • the expandable sealing part can be constructed so that, after expansion of a margin piece, this will be pushed against the ceiling. As further pressure is exhibited against the more central area, the device will widen against the direction of its introduction. As the central area is pressed on, the axial sealing area will be expanded further along its margins, so that the axial sealing area is essentially scraping or digging into the ceiling. The pressure within the cavity will exhibit the pressure against the central area.
  • the device can be made of material sufficiently elastic and or moldable so that it can adjust its shape perfectly according to the shape of the ceiling.
  • the expandable part can be shell-like, dome or cone shaped, so that, in the expanded state of the sealing part, the margins will be in touch with the ceiling whilst the central part of the device will be furthest away from the borehole.
  • the device could be in the shape of an umbrella, where each flank has a narrow angle of 10 - 35 degrees. This could then form the covering surface, perpendicular to the borehole and the rest of the device.
  • the umbrella like part will be expanded from the side facing the borehole creating a shallow concave covering surface.
  • the umbrella like part will then be pushed against the ceiling from below (i.e. from within the cavity), this will result in further expansion of the umbrella like part so that the margin's axial sealing area will be locked into the ceiling.
  • This digging in mechanism leads to a particularly effective seal.
  • the pressure below, exhibited by the raw material will hence be working to expand the device further whilst locking/digging it into the ceiling.
  • the expandable sealing part of the closing device may also contain a fluid filled balloon ring with a collapsible cover into which for example oil or gas could be filled.
  • a fluid filled balloon ring with a collapsible cover into which for example oil or gas could be filled.
  • the balloon will be ‘deflated’ so that its diameter is smaller than the borehole.
  • the pressure fluid will be injected into the cover of the balloon in order to inflate it.
  • the balloon ring Once ‘inflated’, the balloon ring will be bigger than the borehole diameter. The balloon ring will then be pressed against the ceiling by the pressure within the cavity, thereby achieving an effective seal.
  • the expandable sealing part may also have different expansion mechanisms.
  • the sealing part of the closing device and/or the within contained axial sealing surface has an outer diameter of at least 150% and preferably 200% of the borehole diameter. This will ensure that any erosion surrounding the borehole will be sufficiently covered and high sealing pressures can be achieved.
  • the previously named axial sealing area can have the shape of a ring as long as the inside diameter of the ring is still substantially larger than the borehole diameter. Ideally, the width of the ring is relatively narrow so that high area pressures can be achieved against the cavity ceiling. If the outer diameter is 150% of the borehole, the inner diameter should be more than 125%, vice versa, if the outer diameter is more than 200%, the inner diameter should be 150% or more.
  • the closing device can generally be inserted into the borehole in different ways and be positioned from within the cavity to cover the borehole opening.
  • the closing device can be inserted into the borehole together with a drill head on a boring bar.
  • the drill head being introduced in front of the closing device, can then be left within the cavity when the closing device is in place.
  • the drill head may in fact be joined onto the closing device or if need be, get disconnected and then dropped into the cavity.
  • the closing device can also be brought into the borehole on a self-driving vehicle.
  • This vehicle may take the form of a cartridge or an escalator basket for example.
  • This vehicle can transport the closing device through the borehole, until at least part of the closing device is placed within the cavity. After expansion of the device, the vehicle, which is still within the borehole, will then be reversed backwards, thereby pulling the axial sealing surface closely against the cavity ceiling.
  • the closing device can also contain a valve, which, even if the closing device is securely in place, allows liquid or gaseous raw material to be extracted through the borehole. This can be finely adjusted and will be used to help prevent dangerously high pressures building up within the cavity.
  • a valve could also be installed prior to any problems arising, such as when the borehole is first put in place.
  • the valve will be open. As soon as problems arise, the valve will be shut close, so that no further raw materials can leak out.
  • this mechanism will be set so that, the valve is closed in its neutral state and will only open if specifically switched to do so. If this switch is not working, the valve would automatically be in its neutral closed state.
  • FIG. 1 a schematic drawing demonstrating the apparatus to close a borehole.
  • the device is lowered from a ship into a borehole located on the bottom of the sea.
  • FIG. 2 a partly enlarged view of the closing device in FIG. 1 . Shown as the device is still in the borehole above the raw material containing cavity.
  • FIG. 3 a partially enlarged view of the closing device. Shown once located within the raw material containing cavity but not expanded.
  • FIG. 4 a partially enlarged view of the closing device. Shown in a similar position to FIG. 3 . Here, the expandable part is expanded but not yet in close contact with the ceiling of the cavity.
  • FIG. 5 a partially enlarged view of the closing device. Here the device is fully expanded and fully pressed against the cavity ceiling thereby sealing the borehole off.
  • FIG. 6 a partially enlarged view of the closing device. Similar to FIG. 4 , although one can see the drill head in place on this schematic drawing.
  • FIG. 7 a partially enlarged view of a further version of the closing device.
  • the expandable part of this device is achieved by filling off a balloon.
  • Ranges may be expressed herein as from “about” or “approximately” or “substantially” one particular value and/or to “about” or “approximately” or “substantially” another particular value. When such a range is expressed, other exemplary embodiments include from the one particular value and/or to the other particular value.
  • substantially free of something can include both being “at least substantially free” of something, or “at least substantially pure”, and being “completely free” of something, or “completely pure”.
  • FIG. 1 shows a borehole 1 , the bottom of the sea 2 with a raw material containing cavity 3 .
  • apparatus 5 Via a platform 4 on the sea surface, such as a ship, apparatus 5 can be inserted into borehole 1 in order to seal off the latter.
  • Apparatus 5 contains as demonstrated in more detail in FIGS. 2 to 5 , the closing device 6 , which can be inserted via boring bar 7 or a similarly suited device, from above into the borehole 1 . If a platform 4 is used in combination with a boring bar 7 , this can be powered by the forward feed apparatus 8 .
  • FIG. 2 the apparatus is shown whilst still positioned in the borehole.
  • the closing device is in its collapsed state so that the outer circumference of the closing device is smaller than the borehole circumference.
  • the closing device 6 is inserted through the inferior end of the borehole 1 into the cavity 3 , so that the entire expandable sealing part 9 is outside borehole 1 and inside cavity 3 . Once this position is established, the sealing part 9 can be radially expanded until its outer diameter D is substantially bigger than the diameter d of borehole 1 . See also FIG. 4 and FIG. 5 .
  • the sealing part 9 is composed of a foldable umbrella element 10 , which similar to the construction of a basic umbrella consists of multiple supporting breams covered by a membrane. From these breams, further foldable axis will be able to unfold in order for the umbrella membrane to unfold as shown in the figure.
  • This membrane is made of a sufficiently stable, moldable material such as a highly resistible laminate or foil material such as in the form of several layers of aramid fiber laminate.
  • the expansion power unit 11 is in place, which in this figure's construction, could for example be in place for the umbrella element 10 at the closing device 6 .
  • the closing device 6 will be reversed by the forward feeding apparatus pulling back against the direction of insertion, until the axial sealing surface 13 of the sealing part 9 is pressed against the ceiling 12 of the cavity 3 .
  • the axial sealing surface 13 is a circular surface conveniently placed at the outer margin of the sealing part 9 and it is on the backward orientated contour of the sealing part 9 . In other words, the axial sealing surface 13 is placed at that part of the sealing part 9 , which in the expanded state, is facing the ceiling 12 . Please see FIG. 5 .
  • sealing part 9 forms a mildly concave cover once expanded. See FIG. 5 .
  • the angle of the contour of sealing part 9 can vary, although shallow shapes would be most beneficial.
  • the sealing part 9 is suited to angles of 2 ⁇ 5 degrees to 2 ⁇ 20 degrees, so that a shallow cone is formed as a result. If the sealing part 9 is in its position covering the borehole 1 as shown in FIG. 5 , the pressure p generated within the cavity to press down on the centrally elevated sealing part 9 of the closing device 6 . Once this is giving in even slightly, the axial sealing surface 13 will be expanded a little further locking itself into the ceiling 12 .
  • the closing device 6 can also be introduced together with the drill head 14 into the borehole 1 .
  • the drill head will be placed ahead of the closing device and have an at least marginally bigger diameter than the closing device in its non-expanded state.
  • the closing device 6 can be brought straight through the borehole 1 into the cavity 3 where it can be fixed into place.
  • the drill head 14 can either stay in the cavity 3 and/or be attached to the closing device 6 .
  • FIG. 6 is similar to the previous ones—please refer to previous explanations for further detail.
  • FIG. 7 shows a further development as part of this invention:
  • the closing device 6 is now brought through the borehole via a self-driving vehicle 15 .
  • the vehicle 15 contains a forward feeding device, which could take the form of wheels 16 , which are pressed against the walls of the borehole.
  • forward feeding device is attached to the vehicle and can be driven by an engine whose energy can be supplied from the water surface or ground level.
  • the expandable sealing part 9 contains a balloon, which in the deflated state has a smaller diameter than the borehole and can hence be easily introduced. Once within the cavity, the balloon 17 can then be filled with fluid or gas so that its diameter will now be bigger than the borehole 1 .
  • the balloon 17 is shown to be ring shaped in the below drawing, but could equally be circular or mushroom shaped.
  • the back contour of the balloon 17 forms—in the expandable state—the axial sealing surface 13 which is pushed against the ceiling 12 of the cavity 3 . This occurs secondary to the retraction of the forward feeding engine, which will now pull the balloon 17 backwards into the borehole 1 . Secondly the pressure within the cavity 3 will push the entire device in the direction towards the ceiling 12 , thereby exacerbating the seal. Please see FIG. 7 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Sealing Devices (AREA)
US13/882,549 2010-11-03 2011-10-28 Method And Apparatus For Closure Of An Earth Borehole Abandoned US20130269939A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010050368A DE102010050368A1 (de) 2010-11-03 2010-11-03 Verfahren und Vorrichtung zum Verschließen eines Erdbohrlochs
DE102010050368.1 2010-11-03
PCT/EP2011/005459 WO2012059202A2 (fr) 2010-11-03 2011-10-28 Procédé et dispositif pour fermer un trou de forage dans le sol

Publications (1)

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US20130269939A1 true US20130269939A1 (en) 2013-10-17

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US13/882,549 Abandoned US20130269939A1 (en) 2010-11-03 2011-10-28 Method And Apparatus For Closure Of An Earth Borehole

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Country Link
US (1) US20130269939A1 (fr)
EP (1) EP2635767B1 (fr)
CA (1) CA2816761A1 (fr)
DE (1) DE102010050368A1 (fr)
RU (1) RU2013125474A (fr)
WO (1) WO2012059202A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112282640A (zh) * 2020-10-21 2021-01-29 重庆市地质矿产勘查开发局南江水文地质工程地质队 一种破碎地层裸孔钻进方法
CN114233202A (zh) * 2021-11-22 2022-03-25 煤炭科学技术研究院有限公司 一种含有能够随风压自动调节开合状态的舱体的钻杆
CN114233203A (zh) * 2021-11-22 2022-03-25 煤炭科学技术研究院有限公司 安装在钻杆壁上由风压控制开合状态的开关装置及钻杆

Citations (2)

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Publication number Priority date Publication date Assignee Title
US20030029618A1 (en) * 1998-06-12 2003-02-13 Hagen Schempf Method and system for moving equipment into and through an underground well
US20120000656A1 (en) * 2010-07-01 2012-01-05 Basimah Khulusi Apparatus And Methods For Producing Oil and Plugging Blowouts

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US4624130A (en) * 1982-06-21 1986-11-25 Testrac, Inc. Method for determining borehole or cavity configuration through inert gas interface
US4462714A (en) * 1983-04-04 1984-07-31 The Dow Chemical Company Method and apparatus for setting a cement plug in the wide-mouth shaft of an earth cavern
US4685834A (en) * 1986-07-02 1987-08-11 Sunohio Company Splay bottom fluted metal piles
US4834175A (en) 1988-09-15 1989-05-30 Otis Engineering Corporation Hydraulic versa-trieve packer
FR2737533B1 (fr) 1995-08-04 1997-10-24 Drillflex Manchon tubulaire gonflable pour tuber ou obturer un puits ou une canalisation
US6454001B1 (en) * 2000-05-12 2002-09-24 Halliburton Energy Services, Inc. Method and apparatus for plugging wells
DE202009010814U1 (de) 2009-08-12 2009-12-17 Desoi Gmbh Vorrichtung zum Verschluss eines Bohrloches und anschließender Injektion mit Injektionsmaterial

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030029618A1 (en) * 1998-06-12 2003-02-13 Hagen Schempf Method and system for moving equipment into and through an underground well
US20120000656A1 (en) * 2010-07-01 2012-01-05 Basimah Khulusi Apparatus And Methods For Producing Oil and Plugging Blowouts

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112282640A (zh) * 2020-10-21 2021-01-29 重庆市地质矿产勘查开发局南江水文地质工程地质队 一种破碎地层裸孔钻进方法
CN114233202A (zh) * 2021-11-22 2022-03-25 煤炭科学技术研究院有限公司 一种含有能够随风压自动调节开合状态的舱体的钻杆
CN114233203A (zh) * 2021-11-22 2022-03-25 煤炭科学技术研究院有限公司 安装在钻杆壁上由风压控制开合状态的开关装置及钻杆

Also Published As

Publication number Publication date
WO2012059202A2 (fr) 2012-05-10
CA2816761A1 (fr) 2012-05-10
EP2635767B1 (fr) 2014-09-03
DE102010050368A1 (de) 2012-05-03
WO2012059202A3 (fr) 2013-03-28
RU2013125474A (ru) 2014-12-10
EP2635767A2 (fr) 2013-09-11

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Owner name: CHECKPOINT A-B-C GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GEYER, JOACHIM;REEL/FRAME:030479/0536

Effective date: 20130510

STCB Information on status: application discontinuation

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