US3874462A - Device for taking core samples from ocean and other submarine floors - Google Patents

Device for taking core samples from ocean and other submarine floors Download PDF

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Publication number
US3874462A
US3874462A US434576A US43457674A US3874462A US 3874462 A US3874462 A US 3874462A US 434576 A US434576 A US 434576A US 43457674 A US43457674 A US 43457674A US 3874462 A US3874462 A US 3874462A
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United States
Prior art keywords
core
core barrel
guide tube
barrel
passage
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Expired - Lifetime
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US434576A
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English (en)
Inventor
Horst Harms
Wilhelm Lucht
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AG 'WESER'DT197304272321291
WESER DT197304272321291 AG
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WESER DT197304272321291 AG
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    • 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

Definitions

  • a core barrel for taking a sample core from a submarine floor is provided, and a guide tube for deploying and recovering the core barrel has a center passage through which the core barrel can move.
  • the guide tube has an open end for entry and exit of the core barrel and its passage diverges conically in the direction towards this open end.
  • Barrel-guiding elements are located within the passage for guiding the barrel.
  • the present invention relates to a device for taking core samples from ocean and other submarine floors.
  • the extracted core is frequently quite long and is, of course, highly susceptible to bending stresses, which may cause it to collapse. It is self-evident that such a collapse is greatly undesirable because it will destroy any chance of studying the stratification of the core and, hence, of the submarine floor from which the core has been extracted. For this reason it is known to provide U-shaped guides which are elongated and are open along one side. These are suspended at one end from a suspending arrangement which may be located onboard a ship, and the core barrel with the core therein is then raised until it is alongside the guide, whereupon it is laterally moved into the guide through the open side of the latter.
  • the core is now protected and supported over its entire length, so that the guide can be moved to a horizontal position and swung onboard where it is deposited horizontally on deck.
  • a second suspending arrangement is provided which engages the other end of the guide so that the latter can be moved until it is in horizontal position.
  • a device for taking core samples from ocean and other submarine floors which, briefly stated, comprises a core barrel for taking a sample core from a submarine floor, and means for deploying and recovering the core barreL'
  • the means comprises a guide tube having a center passage dimensioned for movement of the core barrel therethrough and provided with an open end for entry and exit of the core barrel.
  • the center passage has in the region of its open end a cross section which conically diverges towards the open end.
  • Barrel-guiding elements are provided within the passage for guiding the core barrel during movement in the passage.
  • the core barrel which is suspended from a rope, cable or the like, which extends through the center passage of the guide tube, will automatically be guided into this center passage as the rope is taken up by a winch or other suitable device onboard the ship or platform.
  • the tube itself may be circumferentially complete and longitudinally hinged so that it can be opened up for inspection and access of the core sample, or it may even have an open side.
  • the portion of the tube having the diverging crosssectional passage need not be of one piece with the remainder of the tube, but can be a separate funnelshaped member, or can be composed, for instance, of a plurality of rods or bars which are arranged in funnel shape.
  • a funnel-shaped member which may, for instance, be of glass fiber reinforced synthetic plastic material or any other suitable material, in conjunction with a roller-type hawse, the hawse being provided for the purpose of as.- suring, via its turnably mounted rollers, a smooth lowfriction guidance on the core barrel into the guide tube, or rather to the inner guide elements which are located in the guide tube proper.
  • the rope or tow from which the latter is suspended remains located within the confines of the guide tube.
  • Deploying and recovering units for deploying and recovering the core barrel and the guide tube may be in form of the already known, per se, arms which can be telescoped outwardly beyond and retracted inwardly of shipboard.
  • FIG. 1 is a diagrammatic side view of a marine vessel provided with the device according to the present invcntion:
  • FIG. 2 is a top-plan view of FIG. 1;
  • FIG. 3 is a section taken on line IIl--III of FIG. 1.
  • FIGS. 1 and 2 we have illustrated a ship, for instance a research vessel, a commercial exploration vessel or the like.
  • the vessel has a deck 1 on which in the illustrated embodiment there are mounted four deployment and recovery units 2, 3, 4 and 5.
  • These units have been illustrated only diagrammatically inasmuch as they are already well-known from this art, as outlined earlier; they can be in form of telescopic arms, that is arms having one portion which is fixedly mounted onboard and another portion which can slide along the fixedly mounted portion between two positions in one of which the free end of the slidablc portion extends outwardly ofthe ship (note the unit 2 in FIG. 2) and another position in which the free end is located inwardly of shipboard (note the unit 4 in FIG. 2).
  • the free end ofeach of the units 2, 3, 4 and 5 carries a pulley 14 (shown diagrammatically with respect to the units 3 and 4 in FIG. 1) which, of course, moves with the respective unit.
  • a pulley 14 shown diagrammatically with respect to the units 3 and 4 in FIG. 1 which, of course, moves with the respective unit.
  • Two of the units always cooperate with one another, such as the units 2 and 3 on the one hand, and the units 4 and 5 on the other hand.
  • each of the tubes 6 and 7 has at its free end a guide portion 10 which in the illustrated embodiment is conically enlarged, that is its interior cross section diverges in direction outwardly away from the respective tube.
  • guide portions 10 can be separate elements or they can be an integral part of the respective tube.
  • Each tube 6, 7 also has a center passage and a length which corresponds substantially to the length of a core barrel 8 (shown diagrammatically because well known in the art per se) and the core sample which is to be subsequently removed from the core barrel 8 when the tube is in the position shown for the tube 7.
  • the core barrel 8 is suspended from a rope, cable or the like 9 (compare also FIG. 3) which extends through the center passage of the respective tube and is trained about the pulley 14, to extend from there to a non-illustrated winch onto the drum of which it can be wound up as the core barrel 8 is to be raised, or from the drum of which it can be paid out as the core barrel is to be lowered.
  • a rope, cable or the like 9 (compare also FIG. 3) which extends through the center passage of the respective tube and is trained about the pulley 14, to extend from there to a non-illustrated winch onto the drum of which it can be wound up as the core barrel 8 is to be raised, or from the drum of which it can be paid out as the core barrel is to be lowered.
  • roller-type hawse that is a plurality of rollers 11 which are turnably mounted for rotation about axes extending normal to the elongation of the respective tube (the tube 6 in this case), with the axis of each roller 11 extending at a right angle in the illustrated embodiment to the axis of a circumferentially successive roller 11.
  • the unit 2 which cooperates with the unit 3 is connected with the tube (here the tube 6) in the region of the portion 10 thereof, and when the tube is in more or less vertical orientation the rope, cable or the like will hang loose as shown in broken lines in FIG. 1.
  • the winch associated with the unit 2 is operated to take up the cable 12 and to pivot the tube 6 with the core barrel and the core sample therein about the pulley 14 of the unit 3 to a horizontal position which is shown in broken lines in FIG. 2. Thereupon, the units 2 and 3 are retracted until the tube 6 is located inboard of the ship.
  • the bracket or other member 13 provided on each of the units 2, 3, 4 and 5 can be raised or lowered (the latter possibility is shown with respect to the unit 4) hydraulically, pneumatically, electrically or mechanically (e.g., by means of a screw spindle) so that when this is accomplished for two of the units simultaneously (e.g., the units 2 and 3) the horizontally oriented tube 6 with its core barrel 8 and the sample core can be gently lowered onto the deck 1. In this position, the tube 6 can be opened, for example by removing a side if one side is not already open, and access may now be had to the core for examination or possible removal.
  • the upper end of the tube may be provided with a diagrammatically illustrated guidance device which guides the cable 9.
  • connection between the tubes 6 and 7 and their associated units 3 and 4 is such that during movements of the ship on the waves, the respective tubes will follow any movements of the cable 9 in such a manner that the cable 9 will always be located substantially midway of the passage in the respective tube.
  • the embodiment illustrated is exemplary only and serves to explain the principle of the invention.
  • the tubes 6 and 7 could be of circular cross section, rather than the quadratic cross section which has been shown, or they could be of any other desired and suitable cross section.
  • the cross section of the portion 10 could be other than what has been illustrated, and various other modifications could be made without departing from the intent and scope of the invention.
  • a combination comprising a core barrel for taking a core from a submarine floor; means for deploying and recovering said core barrel, said means comprising a guide tube having a center passage dimensioned for movement of said core barrel therethrough and provided with two end portions one of which is provided with an open end for entry and exit of said core barrel, said center passage having in the region of said open end a cross-section which conically diverges towards said open end, and barrel-guiding elements within said passage for guiding said core barrel during movement in said passage; and at least two shipboard-mounted deploying and recovering units for said guide tube, each connected with one of said end portions of the latter and having a shipboard-mounted first portion, and a second portion guided by and movable along said first portion between a first position in which said second portion projects at least in part overboard, and a second position in which said second portion is fully retracted onboard.
  • each of said second portions has a free end section provided with tackle for connection with a respective one of said end portions of said guide tube, so that the latter may be swung between a substantially vertical and a substantially horizontal position by differential operation of the respective tackles.
  • a combination comprising a core barrel for taking a'core from a submarine floor; means for deploying and recovering said core barrel, said means comprising a guide tube having a center passage dimensioned for movement of said core barrel therethrough and provided with two end portions one of which is provided with an open end region for entry and exit of said core barrel, said center passage having in the region of said open end a cross-section which conically diverges towards said open end, and barrelguiding elements within said passage for guiding said core barrel during movement in said passage; and at least two shipboard-mounted deploying and recovering units for said guide tube, each connected with one of said end portions of the latter, one of said units being connected with said region of said open end of said guide tube and operative to displace said guide tube from a substantially vertical to a substantially horizontal position and vice versa, and the other of said units being pivotably connected with said other end of said guide tube so as to support said guide tube in a substantially vertical orientation.

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  • 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)
  • Earth Drilling (AREA)
US434576A 1973-04-27 1974-01-18 Device for taking core samples from ocean and other submarine floors Expired - Lifetime US3874462A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2321291A DE2321291A1 (de) 1973-04-27 1973-04-27 Kernabsatzgestell und vorrichtung zu seiner handhabung

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US3874462A true US3874462A (en) 1975-04-01

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4143720A (en) * 1977-05-16 1979-03-13 Verdin Sam M Method and apparatus for taking core samples
US4217709A (en) * 1978-02-24 1980-08-19 The Research Corporation Of The University Of Hawaii Submarine sand sampler
US20080115975A1 (en) * 2005-02-04 2008-05-22 Richard Coppola Systems and methods employing a variable angle guide for a drill
US20150136487A1 (en) * 2013-11-15 2015-05-21 Korea Institute Of Geoscience And Mineral Resource Coring system including tensiometer and method of deciding accurate coring using the same
EP2957713A1 (de) * 2014-05-26 2015-12-23 Fugro Engineers B.V. Verfahren, Handhabungseinheit und Ständer zur Erfassung einer Probe aus einer Meeresbodendeckschicht

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US920031A (en) * 1908-12-17 1909-04-27 Walter D Cuthbert Rock-chisel machine for channel-excavation.
US2326435A (en) * 1940-05-24 1943-08-10 Pink T Bynum Coring apparatus
US2391869A (en) * 1940-06-13 1946-01-01 Alvin M Bandy Side-wall production tester
US2650069A (en) * 1949-09-23 1953-08-25 Union Oil Co Submarine core sampling
US3146838A (en) * 1962-10-25 1964-09-01 Willem B Tijmann Rapid sampler
US3491842A (en) * 1967-05-08 1970-01-27 Inst Francais Du Petrole Apparatus for underwater drilling and coring loose sediments

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US920031A (en) * 1908-12-17 1909-04-27 Walter D Cuthbert Rock-chisel machine for channel-excavation.
US2326435A (en) * 1940-05-24 1943-08-10 Pink T Bynum Coring apparatus
US2391869A (en) * 1940-06-13 1946-01-01 Alvin M Bandy Side-wall production tester
US2650069A (en) * 1949-09-23 1953-08-25 Union Oil Co Submarine core sampling
US3146838A (en) * 1962-10-25 1964-09-01 Willem B Tijmann Rapid sampler
US3491842A (en) * 1967-05-08 1970-01-27 Inst Francais Du Petrole Apparatus for underwater drilling and coring loose sediments

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4143720A (en) * 1977-05-16 1979-03-13 Verdin Sam M Method and apparatus for taking core samples
US4217709A (en) * 1978-02-24 1980-08-19 The Research Corporation Of The University Of Hawaii Submarine sand sampler
US20080115975A1 (en) * 2005-02-04 2008-05-22 Richard Coppola Systems and methods employing a variable angle guide for a drill
US7905298B2 (en) * 2005-02-04 2011-03-15 Richard Coppola Systems and methods employing a variable angle guide for a drill
US20150136487A1 (en) * 2013-11-15 2015-05-21 Korea Institute Of Geoscience And Mineral Resource Coring system including tensiometer and method of deciding accurate coring using the same
US9637987B2 (en) * 2013-11-15 2017-05-02 Korea Institute Of Geoscience And Mineral Resources Coring system including tensiometer and method of deciding accurate coring using the same
EP2957713A1 (de) * 2014-05-26 2015-12-23 Fugro Engineers B.V. Verfahren, Handhabungseinheit und Ständer zur Erfassung einer Probe aus einer Meeresbodendeckschicht
NL2012885B1 (en) * 2014-05-26 2016-06-08 Fugro Eng B V Method, handling unit and stand for acquiring a sample from a seabed top layer.
RU2586355C1 (ru) * 2014-05-26 2016-06-10 Фугро Энджинирс Б.В. Способ, обрабатывающий блок и установка для взятия пробы из верхнего слоя морского дна
US9611710B2 (en) 2014-05-26 2017-04-04 Fugro Engineers B.V. Method, handling unit and stand for acquiring a sample from a seabed top layer

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Publication number Publication date
DE2321291A1 (de) 1974-11-07

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