EP2354438B1 - Dispositif pour l'extraction de carottages - Google Patents

Dispositif pour l'extraction de carottages Download PDF

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Publication number
EP2354438B1
EP2354438B1 EP10196252A EP10196252A EP2354438B1 EP 2354438 B1 EP2354438 B1 EP 2354438B1 EP 10196252 A EP10196252 A EP 10196252A EP 10196252 A EP10196252 A EP 10196252A EP 2354438 B1 EP2354438 B1 EP 2354438B1
Authority
EP
European Patent Office
Prior art keywords
frame
sampler
mobile portion
base
mobile
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.)
Not-in-force
Application number
EP10196252A
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German (de)
English (en)
Other versions
EP2354438A1 (fr
Inventor
Alessandro Bacchelli
Gianni Catone
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.)
Geopolaris Srl
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Geopolaris Srl
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Application filed by Geopolaris Srl filed Critical Geopolaris Srl
Publication of EP2354438A1 publication Critical patent/EP2354438A1/fr
Application granted granted Critical
Publication of EP2354438B1 publication Critical patent/EP2354438B1/fr
Not-in-force 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
    • E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
    • E21B25/18—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being specially adapted for operation under water
    • 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
    • E21B7/12—Underwater drilling
    • E21B7/124—Underwater drilling with underwater tool drive prime mover, e.g. portable drilling rigs for use on underwater floors

Definitions

  • the present invention concerns a core sampling apparatus and in particular a core sampling apparatus adapted to collect samples of soil from underwater beds.
  • the analysis of the underwater beds is also essential to evaluate the impacts on the environment and the repercussions on the aquatic ecosystems of interventions and operations such as periodic or special port dredging, making port infrastructures (docks, piers, containment tanks, etc.), the laying of cables and pipelines, monitoring marine protected areas or locations in which there is environmental risk.
  • core sampling apparatuses comprise a tubular sampler provided with an inner cavity and with one or more cutting elements at a distal end.
  • the core sampler is driven into the sea bed and is forced down to a predetermined depth by actuating a hammer and/or a vibrator.
  • the soil at the bed progressively enters the cavity of the sampler progressively making up the sample.
  • the distal end of the sampler is closed and the sampler is retracted.
  • the core sampling apparatus is lifted from the bed; the core sample is extracted from the cavity of the sampler and is placed in suitable boxes to carry out the analysis.
  • the core sampler is generally linked to a support structure in turn slidingly linked to a special frame and guided by actuation means like, for example, a winch.
  • GB 1 244 382 which is considered the closest prior art, discloses a device for taking soil samples.
  • Patent application EP 1564368 in the name of the present applicant, describes for example core sampling equipment comprising a core sampler provided with a cutting edge at the distal end and suitable for being driven into a sea bed to collect the soil samples.
  • the sampler is supported by a plate slidingly linked to a frame provided with a substantially flat base that is adapted to be rested on the underwater bed.
  • the plate slides along linear guides that extend vertically from the base of the frame and is actuated by way of a cable linked to a winch through a group of pulleys.
  • the present invention makes it possible to reach the aforementioned objectives of minimum bulk and improved stability thanks to an apparatus the main characteristics of which are defined in the first of the appended claims, whereas other characteristics are specified in the remaining claims.
  • the core sampling apparatus comprises a core sampler adapted to be driven into a sea bed so as to collect soil samples and to be slidingly linked to a frame.
  • the frame comprises a base adapted to rest on the sea bed, a fixed portion connected to the base, a first mobile portion with respect to the fixed portion and a second mobile portion slidingly linked to the first mobile portion.
  • the second mobile portion of the frame is connected to the first mobile portion through drive means between the mobile portions adapted to realize a displacement multiplication system for multiplying the displacement of said sampler with respect to the displacement of said first mobile portion.
  • such drive means comprise a system of ropes and pulleys in which the pulleys are connected to the first mobile portion and the ropes are respectively connected at an extremity to the upper and lower ends of the second mobile portion and at the opposite extremity to the fixed portion of the frame and they wind around the pulleys, so that a displacement of the first mobile portion with respect to the fixed portion, corresponds to a displacement that at least doubles that of the second mobile portion.
  • the main advantage offered by the invention is that of minimising the bulk of the apparatus in a vertical direction considerably facilitating the transportation and movement operations.
  • the bulk in a vertical direction is in particular reduced substantially of a half thanks to the use of portions of the mobile frame that are connected to one another so as to realize a displacement multiplication system. Consequently, for the same vertical stroke of the first mobile portion of the frame it is substantially possible to (at least) double the displacement (and the length) of the sampler used in the longitudinal direction.
  • the particular configuration of the system of movement of the mobile portions is such as to reduce of a half the traction loads on the ropes, making it possible to use ropes with a smaller section that make the construction of the apparatus lighter and more cost-effective.
  • the core sampling apparatus of the invention is also provided with a plurality of stabilizer feet connected at the base and adapted to pivot with respect to it by way of linear actuators.
  • the stabilizer feet are mobile from a position for transporting and/or transferring the device from the water surface to the underwater bed, in which they are substantially aligned with the frame in a longitudinal direction, to a work position, in which they radially project from the frame outwards, substantially perpendicular to the frame or even further rotated.
  • the stabilizer feet are also mobile independently from one another, thus making it possible to carry out single adjustments of the support points which allowing for easily obtaining a substantially flat arrangement of the apparatus compensating for the irregularities of the underwater bed.
  • the core sampling apparatus comprises a connection system of the core sampler that makes it possible to disconnect the latter from the frame if it is impossible to carry out the extraction due to circumstances beyond control. This makes it possible to protect the core sampling apparatus, wasting only a relatively inexpensive part if necessary.
  • the core sampling apparatus 1 comprises a core sampler 2 and a frame 3 adapted to support the sampler 2.
  • the frame 3 comprises a base 3a on which two first linear actuators 4 are arranged having also the function of uprights, consisting - in the example shown in the figures - of two double-acting hydraulic cylinders, at the free end of which a first mobile portion 3c is linked, configured as a crosspiece, adapted to support the core sampler 2 and to move it in a vertical direction to allow it to be driven into an underwater bed and be extracted from it.
  • a plurality of bars 3b with a protection function can rise, like in the illustrated example, from the base 3a, parallel and spaced apart with respect to the actuators 4.
  • the core sampler 2 is not directly connected to the first mobile portion or carriage 3c of the frame 3, but is mounted on a second mobile portion 3d (or carriage) of the frame 3 slidingly linked to the first mobile portion 3c.
  • the first mobile portion 3c is provided with a pair of vertical uprights 3c', 3c" that extend from it in a vertical direction towards the base 3a of the frame 3. At the lower and upper ends of each upright 3c', 3c" some pulleys 5a, 5b are respectively arranged adapted to engage with the ropes 6a, 6b.
  • the mobile portion 3d of the frame 3 is arranged between the vertical uprights 3c', 3c" and is respectively connected to the ropes 6a, 6b at its lower and upper free ends. From the respective points of connection with the carriage 3d, the ropes 6a, 6b wind around the pulleys 5a, 5b arranged at the ends of the vertical uprights 3c', 3c" and connect to the fixed portion of the frame 3 at a pair of plates 7 respectively linked to the upper ends of the body (that is the part that is fixed with respect to the base 3a) of the linear actuators 4.
  • the displacement of the second mobile portion 3d with respect to the fixed portion of the frame 3 is greater, and in particular double, with respect to the displacement of the first mobile portion 3c, thus making it possible to minimize the bulk of the core sampling apparatus 1 in a vertical direction. Consequently, for the same stroke of the linear actuators 4, it is in fact possible to double the depth of driving the core sampler 2.
  • the core sampler 2 is not mounted on the apparatus and the linear actuators 4 are completely retracted keeping the first mobile portion 3c of the frame 3 at the upper ends of the actuators themselves, acting, as mentioned, also as structural support upright elements. In such a way the dimensions of the core sampling apparatus 1 in a vertical direction are minimized.
  • the linear actuators 4 are completely extended in a vertical direction moving the first mobile portion 3c away from the base of the frame 3. In this position it is possible to connect, to the second mobile portion or carriage 3d, the core sampler 2, that is thus completely housed inside the frame 3 with the lower end near to its base 3a.
  • the actuators 4 are progressively retracted, thus causing the sampler 2 to be driven and progressively forced down into the soil G of the underwater bed.
  • the descent of the core sampler 2 is guided by means of a suitable hole 3a' formed in the base 3a.
  • a hammer or vibrator H is also arranged making it possible to exert a driving-in effect on the sampler 2, with the purpose of facilitating its forcing down into the soil G. Therefore, the driving-in can be due to gravity, due to hydraulic thrust, combined thrust and vibration or drilling.
  • a displacement S of the first mobile portion 3c causes a displacement of equal amount of each pulley 5a, as well as a rotation thereof, with respect to the fixed portion of the frame. Due to the "lever” effect exerted by the diameter of each pulley 5a during the rotation, such a displacement is doubled at a point that is diametrically opposite to the point of contact between each pulley 5a and the portion of each rope 6a linked to the frame 3.
  • the portion of rope 6a that connects each pulley 5a at the lower end of the second mobile portion 3d carries out a double displacement than that which the first mobile portion carries out towards the base 3a of the frame 3, thus causing a double displacement 2S of the second mobile portion or carriage 3d towards the base 3a.
  • the same displacement multiplication effect also occurs during the extraction movement of the sampler 2 from the soil G of the bed.
  • the upper end of the second mobile portion 3d is connected to the fixed portion of the frame 3 through the ropes 6b, that wind around the pulleys 5b arranged at the upper ends of the uprights 3c', 3c" of the first mobile portion 3c, obtaining the same aforementioned system of constraints. Therefore, a displacement of the first mobile portion 3c in a direction away from the base 3a and from the soil G leads to a displacement that is double than that of the second mobile portion 3d of the frame 3 in the same direction.
  • the aforementioned system of constraints also makes it possible to advantageously reduce of a half the traction force borne by the ropes 6a and 6b if compared to the fixing in/extraction force exerted by each linear actuator 4, making it possible to use ropes with a smaller diameter.
  • the driving-in or extraction force transmitted by the linear actuators 4 to the second mobile portion is symmetrically divided amongst the portion of rope 6a or 6b arranged between each pulley 5a or 5b and the fixed portion of the frame 3, and the portion of rope 6a or 6b arranged between each pulley 5a or 5b and the lower or upper end of the second mobile portion or carriage 3d.
  • the core sampling apparatus can advantageously use a plurality of ropes 6a, 6b operating in parallel and a plurality of pulleys 5a, 5b.
  • the base 3a of the frame 3 has rather small dimensions, that are substantially reduced to the minimum necessary to arrange the linear actuators 4 that advantageously also have the structural function of uprights.
  • the core sampling apparatus 1 of the invention is provided with a plurality of stabilizer feet 8, three in the example shown in the figure, pivoted to the base 3a and movable with respect thereto between a transport and transfer position from the water surface to the underwater bed, in which they are substantially aligned with the frame 3 in a vertical direction, and a work position, in which they are substantially perpendicular to the frame, or also beyond.
  • the core sampling apparatus 1 comprises a plurality of second linear actuators 9, respectively associated with each foot 8.
  • the second linear actuators 9 are configured so as to allow an overall rotation of the respective feet 8, starting from the transport and transfer position in which they are lowered parallel to the frame 3, comprised between 0° and 110°, so as to make it possible to arrange the core sampling apparatus 1 perfectly levelled, compensating for possible irregularities in the sea bed.
  • the hydraulic and electrical connections necessary for the working of the core sampling apparatus according to the invention are advantageously housed in a water-proof container 10 mounted on the frame 3.
  • the sampler 2 is connected in a removable fashion to the mobile portion or carriage 3d of the frame 3 to make it possible to disconnect the core sampling apparatus 1 from the sampler 2 in case in which it is impossible to extract the sampler 2 from the soil G.
  • the second mobile portion 3d comprises clasp means 11 arranged at the lower end thereof and the core sampler 2 comprises a pin 12 having a shape suitable to couple with the clasp means 11.
  • the clasp means are pivoted on the second mobile portion 3d, allowing for the core sampler 2 to connect to the core sampling apparatus 1 without having to completely lift the first mobile portion 3c of the frame 3.
  • the core sampler 2 can be for example rested on the ground and connected to the clasp means 11 in a position that is substantially horizontal. Only subsequently the linear actuators 4 are driven, lifting the sampler 2 and making it rotate in a vertical position to proceed with the core sampling operations.
  • This configuration which can be used also more in general in a core sampling apparatus with a different overall configuration, is also advantageous during the step of extraction of the samples. Indeed, once the sampler 2 has been extracted from the soil and the core sampling apparatus 1 has been recovered from the sea bed, it is possible to rotate the sampler 2 outwards from the frame 3 and retract the linear actuators 4 until the sampler is brought back into a horizontal position, for example on the ground. It is then possible to easily disconnect the sampler 2 from the clasp means 11 without having to support the weight of the sampler 2 and of the material contained in it.
  • the core sampling apparatus 1 can be equipped with a system for controlling and monitoring the operation, comprising inclination sensors, video cameras, spot lights and the like, as well as a remote control for the operator, thus allowing effective remote control that is substantially independent from the type of support vessel.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (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)
  • Sampling And Sample Adjustment (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Claims (15)

  1. Un appareil pour carottage (1) comportant un carottier (2) et un châssis (3) adapté pour soutenir ledit carottier (2), ledit châssis (3) comportant une embase (3a), une première partie mobile (3c) du châssis (3) étant liée à ladite embase (3a) au moyen d'une pluralité d'actionneurs linéaires (4) disposés sur cette dernière, caractérisé en ce qu'il comporte en outre au moins une seconde partie mobile (3d) adaptée pour soutenir le carottier (2) et montée coulissante par rapport à la première partie mobile (3c), l'appareil comportant en outre des moyens de commande disposés entre les parties mobiles (3d, 3c), adaptés pour réaliser un système de multiplication de déplacement pour multiplier le déplacement du dit carottier par rapport au déplacement de ladite première partie mobile (3c).
  2. L'appareil selon la revendication 1, où lesdits moyens de commande comportent un système de poulies et de cordes (5a, 5b, 6a, 6b), où les poulies (5a, 5b) sont reliées à la première partie mobile (3c) et les cordes (6a, 6b) sont respectivement reliées, à une extrémité, aux extrémités supérieure et inférieure de la seconde partie mobile (3d) et, à l'extrémité opposée, à la partie fixe du châssis (3), en s'enroulant autour des poulies (5a, 5b).
  3. L'appareil selon la revendication 2, où la première partie mobile (3c) comporte une paire de montants (3c', 3c") s'étendant vers l'embase (3a) du châssis (3) selon une direction verticale, les poulies (5a, 5b) étant respectivement agencées aux extrémités supérieure et inférieure de chaque montant (3c', 3c").
  4. L'appareil selon la revendication 3, où les cordes (6a, 6b) sont reliées à la partie fixe du châssis (3) au moyen d'une paire de plaques (7) respectivement liées aux extrémités supérieures du corps, qui est la partie qui est fixée à ladite embase (3a), des dits actionneurs linéaires (4).
  5. L'appareil selon l'une des revendications précédentes, où l'embase (3a) du châssis (3) comporte un orifice (3a') adapté pour guider la descente du carottier (2) pendant les opérations de carottage.
  6. L'appareil selon l'une des revendications précédentes, caractérisé en ce qu'il comporte en outre un marteau ou un vibreur (H) disposé sur la seconde partie mobile (3d) du châssis (3) et adapté pour exercer sur le carottier (2) un effet de propulsion pendant les opérations de carottage.
  7. L'appareil selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte en outre une pluralité de pieds de stabilisation (8) montés pivotants sur l'embase (3a) du châssis (3) et pouvant être mobiles par rapport à elle entre une position de transport, dans laquelle ils sont sensiblement alignés avec ledit châssis (3) selon une direction verticale, et une position de travail, dans laquelle ils se projettent radialement à partir du châssis (3).
  8. L'appareil selon la revendication 7, caractérisé en ce qu'il comporte en outre une pluralité de seconds actionneurs linéaires (9) respectivement associés à chaque pied de stabilisation (8).
  9. L'appareil selon la revendication 8, où lesdits seconds actionneurs linéaires (9) sont agencés de façon à permettre une rotation des pieds de stabilisation respectifs (8), à partir de la position de transport et de transfert dans laquelle ils sont alignés avec le châssis (3), comprise entre 0° et 110°.
  10. L'appareil selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte en outre un conteneur étanche (10) monté sur la châssis (3) et adapté pour loger les connexions hydrauliques et électriques nécessaires au fonctionnement de l'appareil.
  11. L'appareil selon l'une des revendications précédentes, caractérisé en ce que le carottier (2) est monté de façon amovible sur la partie mobile (3d) du châssis (3).
  12. L'appareil selon la revendication 11, où la seconde partie mobile (3d) comporte des moyens de préhension (11) disposés en correspondance à son extrémité inférieure, et où le carottier (2) comporte une broche (12) ayant une forme appropriée pour se coupler à la forme des dits moyens de préhension (11).
  13. L'appareil selon la revendication 12, où lesdits moyens de préhension (11) sont articulés sur la seconde partie mobile (3d).
  14. L'appareil selon l'une quelconque des revendications précédentes, où lesdits premiers actionneurs linéaires (4) ont également une fonction de montants structurels de support.
  15. L'appareil selon l'une quelconque des revendications précédentes, où plusieurs barres de protection (3b) sont situées sur ladite embase (3a), parallèles aux dits actionneurs linéaires (4) et décalés par rapport à ceux-ci.
EP10196252A 2009-12-29 2010-12-21 Dispositif pour l'extraction de carottages Not-in-force EP2354438B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITFI2009A000276A IT1397151B1 (it) 2009-12-29 2009-12-29 Apparecchiatura di carotaggio

Publications (2)

Publication Number Publication Date
EP2354438A1 EP2354438A1 (fr) 2011-08-10
EP2354438B1 true EP2354438B1 (fr) 2013-03-20

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Family Applications (1)

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EP10196252A Not-in-force EP2354438B1 (fr) 2009-12-29 2010-12-21 Dispositif pour l'extraction de carottages

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EP (1) EP2354438B1 (fr)
IT (1) IT1397151B1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PT107937B (pt) 2014-10-02 2017-08-16 Introsys - Integration For Robotic Systems - Integração De Sist Roboticos S A Robô móvel de serviço com capacidade de recolha de amostras de solo e biológicas para monitorização ambiental
JP6906776B2 (ja) * 2017-04-25 2021-07-21 株式会社Ｋｏｕｗａグローバルビュー 打ち込み機
CN110284837B (zh) * 2019-07-19 2023-12-22 广州海洋地质调查局 一种配备变径岩芯取样钻杆动力头的深海钻机
CN110864931A (zh) * 2019-11-02 2020-03-06 中北大学 一种地质生态环境质量的定量评价参数与测定方法
CN111706281B (zh) 2020-06-17 2021-11-23 中国地质科学院勘探技术研究所 一种绳索取心钻具
CN113063623B (zh) * 2021-03-24 2024-04-05 湖北地矿建设勘察有限公司 一种地质勘察用岩土检测装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3442339A (en) * 1967-02-17 1969-05-06 Hughes Tool Co Sea bottom coring apparatus
GB1244382A (en) * 1967-12-29 1971-09-02 Werf Conrad Ed Stork Hijsch N Device for taking soil samples
NL7601178A (nl) * 1976-02-05 1976-08-10 Taylor Woodrow Const Ltd Inrichting voor het boren en bemonsteren/beproe- ven.
AUPO857197A0 (en) * 1997-08-15 1997-09-04 Benthic Geotech Pty Ltd Improved methods for seabed piston coring
ITLI20040004U1 (it) 2004-02-17 2004-05-17 Alessandro Bacchelli S.h.s.b.d. self sheating-hydraulic-sampling-bottom-device dispositivo di campionamento fondali autoinguainante idraulico.

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Publication number Publication date
IT1397151B1 (it) 2013-01-04
ITFI20090276A1 (it) 2011-06-30
EP2354438A1 (fr) 2011-08-10

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