EP2635767A2 - Verfahren und vorrichtung zum verschliessen eines erdbohrlochs - Google Patents
Verfahren und vorrichtung zum verschliessen eines erdbohrlochsInfo
- Publication number
- EP2635767A2 EP2635767A2 EP11776713.7A EP11776713A EP2635767A2 EP 2635767 A2 EP2635767 A2 EP 2635767A2 EP 11776713 A EP11776713 A EP 11776713A EP 2635767 A2 EP2635767 A2 EP 2635767A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- closure body
- sealing
- chamber
- axialdichtfläche
- erdbohrloch
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 91
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 230000002441 reversible effect Effects 0.000 claims abstract description 3
- 239000012530 fluid Substances 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 12
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 2
- 238000011161 development Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—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
- the present invention relates to a method and apparatus for closing an earth well, wherein an expandable closure body is inserted into the wellbore and expanded in diameter for the purpose of closure.
- Subterranean resources such as oil fields or gas fields
- Such Erdbohrlöcher can hereby be introduced from the earth's surface, but also under water from the sea or water bottom into the soil.
- Blowout Preventer is usually attached to the upper end of the well bore or out there from the Erdbohrloch pipe section, by means of the wellbore or the thereto subsequent raw material line can be closed.
- the said blowout preventer has a valve device which is open only when selectively controlled and otherwise automatically closes. Problems arise, however, if this closure mechanism, for example, as a result of damage does not work, or leaks between said blowout preventer and the Erdbohrloch occur in the region of the mouth of the Erdlochloch at the earth's surface.
- the radial expansion of the sealing portion takes place here for example via a clamping cone which presses an elastic clamping ring by axial displacement to the outside, or for example by axial squeezing of rubber rings between two collapsible abutment shoulders, so that the axially crushed rubber rings dodge radially.
- complete sealing with such radially expandable closure bodies in the wellbore is not easy in softer earth strata or irregularly-shaped wellbores.
- the sealing portions of said closure body are only limited radially expandable, so that when a yielding of the wall of the Erdbohrlochs sufficient contact pressure and sealing effect can not be achieved.
- the present invention has for its object to provide an improved method and an improved device of the type mentioned, avoid the disadvantages of the prior art and further develop the latter in an advantageous manner.
- a secure seal the Erdbohrlochs be achieved without having to take this long processing times and difficult handling in purchasing.
- the borehole at its lower end where the borehole passes into the earth chamber filled with raw materials, should be removed from below.
- the closure body is at least partially led out of the lower end of the Erdbohrlochs, expanded in the earth chamber below the Erdbohrloch and out with an Axialdicht Structure from below against the Erdbohrloch surrounding chamber ceiling of the Erdsch.
- the closure body has an axial sealing surface on an expandable section, the diameter of which in the expanded state of the closure body being significantly larger than the diameter of the groundwater hole.
- a reversible feed drive is provided, by means of which the closure body is first passed through the Erdbohrloch and beyond the end of Erdbohrlochs in said earth chamber and After the expandable portion of the closure body is widened, it is moved backwards until the axial sealing surface is present at the Erdhuntdecke surrounding the Erdbohrloch.
- the sealing or pressing forces effecting the sealing seat increase automatically with increasing pressure in the earth chamber, since the liquid and / or gas pressure prevailing in the earth chamber is used to press the closure body seated above the lower earth hole mouth against the chamber ceiling.
- the Axialdicht Structure is pressed with a sealing force, which is directed substantially parallel to the longitudinal axis of the Erdbohrlochs upwards, against the chamber ceiling.
- the closure body is not expanded in widened intermediate sections of the borehole, but moved directly into the earth chamber storing the liquid or gaseous raw materials to be stored, and immediately expanded there to be driven from below against the chamber ceiling.
- the chamber ceiling of such raw material storage chambers often have Approximately considered planar chamber ceilings, which extend at least approximately perpendicular to the longitudinal axis of the Erdlochloch depending on the inclination of the Erdlochloch or such raw material storage chambers can be advantageously drilled so that the chamber ceilings around the mouth of the Erdbohrlochs extend substantially perpendicular to the longitudinal direction of the Erdbohrlochs in the mouth region ,
- chamber sections can be drilled in which the chamber ceiling around the mouth of the Erdbohrlochs around at an angle in the range of 70 ° - 1 10 °, in particular about 80 ° -100 ° and in particular about 90 ° +/- 5 °, ie the chamber ceiling extends at least approximately around the mouth of the borehole approximately
- the sealing of the earth borehole exclusively by axial, i. in the direction of the Erdbohrlochs acting pressing of the Axialdicht Structure the closure body against the chamber ceiling done, the seal causing axial contact pressure by retraction of the closure body to the Erdbohrloch out, but in particular can also be done by taking advantage of the prevailing in the chamber fluid pressure forces.
- the closure body may have a sufficiently large in the expanded state Axialdruck-Beetzschlagungs constitutional which is provided on the side facing away from the chamber ceiling of the closure body and advantageously at least approximately parallel to the chamber ceiling extends and / or may be approximately planar, so that the fluid pressure forces a predominantly axially exert upward force on the closure body.
- the said axial pressure-loading surface of the closure body thus captures, as it were, the fluid pressure and is thus contoured and sized sufficiently large to press the axial sealing surface of the closure body against the chamber ceiling with sufficient contact pressure.
- the aforementioned expandable sealing portion of the closure body can basically be designed differently and expanded in various ways.
- the mentioned expandable sealing portion comprise a hinged or foldable screen element whose outer edge portion forms said Axialdicht Structure.
- a hinged or foldable screen element By means of such a hinged or foldable screen element, a large coverage of the mouth region of the Erdbohrlochs can be achieved, ie it can be accomplished a very strong expansion to give the sealing portion a much larger diameter than the Erdbohrloch.
- the risk of leaks is eliminated by eruptions of the Erdloch in its mouth area.
- a large area is achieved, on which the fluid pressure in the earth chamber can act, whereby the closure body is pressed with high force against the chamber ceiling.
- the closure body and / or its expandable sealing portion is designed such that the Axialdicht Operations spreads under the pressure of the liquid in the earth chamber with the chamber ceiling and schabend or digging to the said chamber ceiling applies or in this piece digs.
- the expandable sealing portion may be formed as a Sp Dretzkorpus, which is set after widening with an edge portion on the chamber ceiling and spread by depressing a further inner portion opposite to the insertion direction. Upon depression of the central portion of the Sp DrISSkorpus the Axialdicht Structure forming edge portion widens a bit further, so that the said Axialdichtabites digs into the wall of the chamber ceiling or hineinschabt, whereby a particularly efficient sealing is achieved.
- the depression of the central portion of the Sp Schwarzkorpus can be advantageously effected by the pending Erdhunt réelle there or at least supported.
- said Sp Schwarzkorpus be sufficiently elastic and / or deformable, so that it can be deformed under the Erdsch réelle accordingly.
- Said Sp Schwarzkorpus can be formed in a development of the invention - roughly speaking - conical, trough, cup or cone-shaped, so that in the expanded state of the sealing portion of the outer edge portion of the Sp Schwarzkorpus is present on the chamber ceiling and from said edge portion of the Contour of Sp Schwarzkorpus extending inwardly rising so that the Sp Schwarzkorpus is increasingly spaced from the borehole away from the chamber ceiling.
- said Sp Schwarzkorpus have an umbrella shape in which the flanks of the Sp Dr DrISSkorpus - viewed in section - flat angle, for example in an angular range between 10 ° and 35 ° to a plane extending perpendicular to the longitudinal axis of Erdbohrlochs or the closure body is.
- the umbrella-like Sp Schwarzkorpus is hereby spread with its pointing to the chamber ceiling edge portion, so that there is a flat concave to the Erdbohrloch Sp Schwarzschadorel.
- This umbrella-shaped Sp Schwarzkorpus is then pressed from below against the chamber ceiling so that the umbrella-shaped Sp Schwarzkorpus spread even further and / or is suppressed, so that the Sp Schwarzkorpus spreads with its Axialdicht Structure forming edge portion against the chamber ceiling.
- Eingrab Koch thereby produced a particularly effective sealing can be achieved.
- the fluid pressure acting against the screen from below tries to further spread the screen, causing it to spread on the chamber ceiling.
- the expandable sealing portion of the closure body may also comprise an expandable by pressurized fluid filling annular balloon or balloon portion comprising a collapsible shell defining a pressure fluid space into which a pressurized fluid, such as oil or a gas can be introduced.
- a pressurized fluid such as oil or a gas
- the balloon is guided in the collapsed state, so that the annular balloon has a diameter smaller than the Erdbohrloch.
- pressurized fluid is forced into the interior of the balloon, causing it to expand to a diameter significantly greater than that of the borehole so that the rearwardly oriented annular balloon section can be pressed against the chamber ceiling to seal.
- the expandable sealing portion of the closure body may also have other expansion mechanisms, such as radially outwardly movable sealing jaws or the like.
- the sealing portion of the closure body and / or the Axialdicht Structure provided thereon has an outer diameter which is at least 150% of the Erdbohrloch tomessers, preferably more than 200% of the Erdbohrloch bemessers.
- Said Axialdicht preparation may be formed as an annular surface whose inner diameter is also significantly larger than said Erdbohrloch tomesser.
- the width of said annular surface is relatively narrow in order to achieve high surface pressures on the chamber ceiling.
- the inner diameter of said annular sealing surface may be more than 125% of the Erdbohrloch tomessers, or if the outer diameter of the Axialdicht composition is more than 200% of the Erdbohrloch tomessers, 150% or amount to more of the Erdbohrloch bemessers.
- the closure body can in principle be introduced in various ways into the earth borehole and the borehole mouth can be positioned in the earth chamber from below to cover the borehole.
- the closure body is introduced together with a drill head on a drill rod in the Erdbohrloch, wherein the drill head can be operated drilling, for example by rotating the boring bar about its longitudinal axis.
- the advantageously arranged in the insertion direction in front of the closure body drill head can be left in the earth chamber, when the closure body is mounted, the drill head can remain in principle connected to the closure body, or optionally alternatively separated and can be sunk in the earth chamber.
- said closure body can also be introduced into the earth borehole on a self-propelled wagon, said self-propelled wagon being able to be designed, for example, in the manner of a cartridge or a lift cage, which can comprise driving drums that can be driven in the area of radial peripheral surfaces pressed against the Erdbohrlochwandung.
- the closure body is also guided through the Erdbohrloch until the closure body has at least partially reached the underlying Erdhunt. After widening of the closure body of the car still located in the Erdbohrloch is moved back until the closure body is pending with its Axialdicht Structure on the chamber ceiling.
- the closure body can in this case comprise in an advantageous embodiment of the invention, a valve to selectively enter even with mounted closure body liquid or gas from the earth chamber in the Erdbohrloch and leak over this, for example to allow a pressure reduction or located in the Erdhunt raw materials win.
- a valve to selectively enter even with mounted closure body liquid or gas from the earth chamber in the Erdbohrloch and leak over this, for example to allow a pressure reduction or located in the Erdcrohrloch.
- a closure body provided with such a valve device can also be introduced into the earth borehole even before any problems or leaks occur, for example, during the formation of the earth borehole.
- the valve device is kept open. As soon as problems occur, it can be sealed by closing the valve device.
- the valve device is self-switching designed such that it only goes into the open position with targeted control and automatically closes in case of failure of the control, for example, by appropriate bias.
- FIG. 1 is a schematic sectional view of an apparatus for closing an earth borehole according to an advantageous embodiment of the invention, which is introduced from a ship into an existing in the seabed Erdloch,
- FIG. 4 is a fragmentary, enlarged view of the closure body in a position similar to Figure 3, but wherein the sealing portion is already expanded in the form of a deployable expansion body, but is not brought into contact with the chamber ceiling of the Erdsch.
- FIG. 5 is a fragmentary enlarged view of the closure body in fully expanded position and in sealing engagement with the chamber ceiling of the earth chamber, so that the Erdbohrloch is closed,
- FIG. 6 is a fragmentary enlarged view of the closure body in one
- FIG. 7 is a fragmentary, enlarged view of the closure body according to a further embodiment of the invention, according to which the expandable sealing portion of the closure body can be inflated by filling Balloon comprises and the closure body was introduced by means of a self-propelled wagon in the Erdbohrloch.
- Fig. 1 shows an earth well 1, which connects the seabed 2 with an underlying earth chamber 3, in which, for example, petroleum or other degradable raw materials are stored.
- the device 5 is lowered to close the Erdloch 1 from above and introduced into the Erdloch 1.
- Said device 5 in this case comprises the closing body 6, which can be seen in greater detail from FIGS. 2 to 5, which is introduced from above into the earth borehole 1 via a boring bar 7 or other suitable feed and / or guide means and driven there. If a boring bar 7 is used in the above-mentioned manner, the boring bar feed drive provided on the platform 4 can be used as the feed device 8.
- the closure body 6 In the position shown in FIG. 2, which is still located in the borehole 1, the closure body 6 has collapsed, so that the outer diameter of the closure body 6, including its expandable sealing section 9, is smaller than the diameter of the borehole. As shown in FIG. 3, the shutter body 6 is moved beyond the lower end of the earth borehole 1 into the earth chamber 3, so that the entire expandable seal portion 9 is completely outside the earth borehole 1 in the earth chamber 3. If this position is reached, the sealing portion 9 is radially expanded until its outer diameter D is significantly greater than the diameter d of the Erdbohrlochs 1, see. 4 and FIG. 5.
- the sealing section 9 comprises a hinged or unfoldable shield element 10, which may comprise stabilizing support struts in the manner of a rain or parasol and a shielding membrane carried thereby.
- the mentioned support struts can to be folded transversely to the longitudinal axis of the closure body or tangentially on the outer periphery of subsequent folding axes, so that the shield membrane unfolds in the manner shown.
- Said umbrella membrane is made of a sufficiently stable, deformable material such as a high-strength, for example, fiber fabric-reinforced cloth and / or laminate and / or sheet material, for example in the form of a multi-layer Aramidmaschinelaminats.
- a widening drive 1 1 is provided, which may be in the illustrated embodiment, for example, a mechanical adjusting mechanism for the screen element 10 on the closure body 6.
- the closing body 6 is retracted upward by reversing the feeding device 8 against the direction of insertion until the sealing section 9 abuts the chamber ceiling 12 of the earth chamber 3 and the axial sealing surface 3 located on the sealing section 9 is pressed against the said chamber ceiling 12 becomes.
- the Axialdicht Structure 13 is formed as an annular surface and advantageously disposed on the outer edge of the sealing portion 9, wherein the Axialdicht Structure 13 is located on a rearwardly oriented contour of said sealing portion 9.
- the axial sealing surface 13 is located at a portion of said sealing portion 9, which faces the chamber ceiling 12 in the expanded state of said sealing portion 9, cf. Fig. 5.
- the sealing portion 9 in the expanded state forms a slightly concave to the chamber ceiling 12, cup-shaped expansion body whose flanks rise at a low angle to the chamber ceiling 12, see. Fig. 5.
- the angle of inclination of the contour or the flanks of the sealing portion 9 may vary here, advantageously quite flat designs are provided in order to achieve a high spreading effect.
- the sealing portion 9 may be inclined at an angle of 2x 5 ° to 2x 20 °, so that results in a total of shallow cone. Is the sealing portion 9 in the sealing Position of FIG. 5, the pressure prevailing in the earth chamber 3 pressure p tries to flatten toward the center sealing portion 9 of the closure body 6 flat. If this yields slightly, there is a spreading effect in which the axial sealing surface 13 provided at the edge widens slightly further radially, thereby incorporating it into the material of the chamber cover 2.
- the closure body 6 can be introduced, for example together with a drill head 14 in the Erdbohrloch 1, wherein advantageously the drill head 14 is arranged in the insertion direction in front of the closure body 6 and has an at least slightly larger diameter than the closure body 6 in the collapsed Status.
- the closure body 6 can be inserted into the earth chamber 3 at the same time as the earth borehole 1 is being introduced into it, and be mounted in the earth chamber 3 at its mouth region.
- the drill head 14 can remain in the earth chamber 3 and / or remain connected to the closure body 6.
- the drill head 14 could also be loosened and sunk in the earth chamber 3.
- the embodiment of FIG. 6 corresponds to that described above, so that reference is made to the preceding embodiment.
- Fig. 7 shows a further embodiment of the invention, according to which the closure body 6 is inserted by means of a self-propelled trolley 15 in the Erdbohrloch.
- Said carriage 15 in this case comprises on its peripheral side feed means, which may be formed as drivable wheels 16, which are pressed against the inner wall of the Erdbohrlochs 1.
- the carriage 15 may comprise pairs of wheels arranged on opposite sides.
- the feed device 8 is in this case arranged on the self-propelled carriage 15 and may for example comprise a motor drive for said wheels 16, wherein a power supply, for example via a line from the Erdgg. Sea surface can be done forth.
- an expandable sealing portion 9 which comprises a fillable balloon 17, which has a diameter smaller than the Erdbohrloch designedmesser in the collapsed state.
- a fillable balloon 17 which has a diameter smaller than the Erdbohrloch tomesser in the collapsed state.
- Said balloon 17 is annular in the illustrated embodiment, but could also be mushroom-shaped or disc-shaped.
- the rearwardly oriented contour of said balloon 17 forms in the expanded state shown in FIG. 7, the Axialdicht Structure 13, which can be pressed against the chamber ceiling 12 of the earth chamber 3.
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)
- Sealing Devices (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010050368A DE102010050368A1 (de) | 2010-11-03 | 2010-11-03 | Verfahren und Vorrichtung zum Verschließen eines Erdbohrlochs |
PCT/EP2011/005459 WO2012059202A2 (de) | 2010-11-03 | 2011-10-28 | Verfahren und vorrichtung zum verschliessen eines erdbohrlochs |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2635767A2 true EP2635767A2 (de) | 2013-09-11 |
EP2635767B1 EP2635767B1 (de) | 2014-09-03 |
Family
ID=44903161
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11776713.7A Active EP2635767B1 (de) | 2010-11-03 | 2011-10-28 | Verfahren und vorrichtung zum verschliessen eines erdbohrlochs |
Country Status (6)
Country | Link |
---|---|
US (1) | US20130269939A1 (de) |
EP (1) | EP2635767B1 (de) |
CA (1) | CA2816761A1 (de) |
DE (1) | DE102010050368A1 (de) |
RU (1) | RU2013125474A (de) |
WO (1) | WO2012059202A2 (de) |
Families Citing this family (3)
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 |
CN114233203B (zh) * | 2021-11-22 | 2023-09-26 | 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 |
CN114233202B (zh) * | 2021-11-22 | 2023-09-26 | 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 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1676785A (en) * | 1924-10-20 | 1928-07-10 | James O Lewis | Method of and apparatus for grouting the walls of an oil well |
US3130787A (en) * | 1960-09-12 | 1964-04-28 | James C Mason | Well bridging tool |
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 |
AR018459A1 (es) * | 1998-06-12 | 2001-11-14 | Shell Int Research | Metodo y disposicion para mover equipos hacia y a traves de un conducto y dispositivo de vaiven para ser usado en dicha disposicion |
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 |
US20120000656A1 (en) * | 2010-07-01 | 2012-01-05 | Basimah Khulusi | Apparatus And Methods For Producing Oil and Plugging Blowouts |
-
2010
- 2010-11-03 DE DE102010050368A patent/DE102010050368A1/de not_active Withdrawn
-
2011
- 2011-10-28 RU RU2013125474/03A patent/RU2013125474A/ru not_active Application Discontinuation
- 2011-10-28 CA CA2816761A patent/CA2816761A1/en not_active Abandoned
- 2011-10-28 WO PCT/EP2011/005459 patent/WO2012059202A2/de active Application Filing
- 2011-10-28 EP EP11776713.7A patent/EP2635767B1/de active Active
- 2011-10-28 US US13/882,549 patent/US20130269939A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2012059202A2 * |
Also Published As
Publication number | Publication date |
---|---|
US20130269939A1 (en) | 2013-10-17 |
EP2635767B1 (de) | 2014-09-03 |
WO2012059202A3 (de) | 2013-03-28 |
DE102010050368A1 (de) | 2012-05-03 |
CA2816761A1 (en) | 2012-05-10 |
RU2013125474A (ru) | 2014-12-10 |
WO2012059202A2 (de) | 2012-05-10 |
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