EP3117068A1 - Dispositif de forage immergé et procédé d'obtention et d'analyse d'échantillons de sol du fond d'un plan d'eau - Google Patents

Dispositif de forage immergé et procédé d'obtention et d'analyse d'échantillons de sol du fond d'un plan d'eau

Info

Publication number
EP3117068A1
EP3117068A1 EP14729223.9A EP14729223A EP3117068A1 EP 3117068 A1 EP3117068 A1 EP 3117068A1 EP 14729223 A EP14729223 A EP 14729223A EP 3117068 A1 EP3117068 A1 EP 3117068A1
Authority
EP
European Patent Office
Prior art keywords
drill
drilling
core
base frame
water
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
Application number
EP14729223.9A
Other languages
German (de)
English (en)
Other versions
EP3117068B1 (fr
Inventor
Stefan Michael Finkenzeller
Leonhard Weixler
Tim Freudenthal
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.)
Universitaet Bremen
Bauer Maschinen GmbH
Original Assignee
Universitaet Bremen
Bauer Maschinen 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 Universitaet Bremen, Bauer Maschinen GmbH filed Critical Universitaet Bremen
Publication of EP3117068A1 publication Critical patent/EP3117068A1/fr
Application granted granted Critical
Publication of EP3117068B1 publication Critical patent/EP3117068B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/14—Racks, ramps, troughs or bins, for holding the lengths of rod singly or connected; Handling between storage place and borehole
    • E21B19/143—Racks, ramps, troughs or bins, for holding the lengths of rod singly or connected; Handling between storage place and borehole specially adapted for underwater drilling
    • 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
    • E21B25/10—Formed core retaining or severing 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
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/0007—Equipment or details not covered by groups E21B15/00 - E21B40/00 for underwater installations
    • 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
    • E21B47/00—Survey of boreholes or wells
    • E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
    • 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
    • E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
    • E21B49/02—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil
    • E21B49/025—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil of underwater soil, e.g. with grab devices
    • 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 invention relates to an underwater drilling device for obtaining and analyzing soil samples of a water bottom, comprising a base frame adapted for lowering in a body of water and for placing on the bottom of the water, a drill drive for rotationally driving a drill string, which is constructed of tubular drill string elements, wherein the drill drive is movably supported vertically along a drilling axis between a lower borehole opening and an upper return position, a first storage area on the base frame for supporting the individual tubular drill string elements for construction of the drill string, wherein in each of the drill string elements a receptacle for a drill core is detachably supported, a second storage area on the base frame for storing the recordings with the obtained drill cores as a soil sample, a feed device, with which individual drill string elements from the first layer region to the drilling axis for discharging a receptacle with drill core from the drill string and depositing it at a specific storage location in the second storage area, according to the preamble of claim 1.
  • the invention further relates to a method for obtaining and analyzing soil samples of a water bottom, in which an underwater drilling device is lowered with a base frame in a body of water and deposited on a water bottom, with a drill drive, which moves vertically is mounted on the base frame, a drill string is drilled consisting of at least one tubular drill string element in the water bottom in a first drilling step, wherein in a receptacle in the tubular drill string a drill core is received, the recording with the core removed by means of a discharge device from the drill string and at least one further drilling step is carried out, wherein a second drill string element with a receptacle for a drill core is fed to the drill string by means of a feed device and a further drilling of the drill pipe takes place with the drill drive, according to the preamble of claim 9.
  • a generic underwater drilling device and a generic method, for example, from WO 2012/000077 A1 or US 7,380,614 B1 show.
  • a borehole is gradually created according to the length of a drill string element.
  • the core formed in the tubular drill string is received with a drill core catcher, removed from the drill pipe and stored in a storage area on a base frame of the drilling device.
  • a plurality of cores can be obtained as soil samples and stored in the storage area of the drilling apparatus. The cores allow a very good statement about the structure of the waterbed.
  • WO 2013/188903 A1 discloses a method for testing a watercourse, in which the electrical conductivity and a magnetic property of the soil are detected along a borehole by means of a sensor device. For this purpose, a sensor is moved along the borehole wall. For a reliable measurement, however, two basic process steps are necessary. First, the borehole is to be created, and then the measurement is to be made. When drilling out of the wellbore and the removal of the drilled soil material from the well, there is also the fundamental problem that a smearing between the individual soil layers can take place. This makes reliable determination of the layer structure of the river bottom difficult.
  • DE 695 01 539 D2 discloses a method and a device for detecting radioactivity on a drill core.
  • a sensor device is arranged directly on the drilling device, which can detect radioactive radiation to a drill core.
  • the invention is based on the object of specifying an underwater drilling device and a method for acquiring and analyzing soil samples of a waterbed, with which soil samples can be obtained and analyzed both reliably and time-consuming and thus cost-effectively.
  • the invention is achieved on the one hand by an underwater drilling device with the features of claim 1 and on the other hand by a method having the features of claim 9.
  • Preferred embodiments of the invention are specified in the respective dependent claims.
  • the underwater drilling device is characterized in that at least one sensor device, which is designed to determine at least one physical and / or chemical property of the drill core, is arranged on the base frame in a surrounding region of the drilling axis, and that a data processing device is provided for storing determined data to the at least one physical and / or chemical property of the core and data to the storage location of the core in the second storage area.
  • a basic idea of the invention is, as in the case of the method known from the generic state of the art, with an underwater drilling device to obtain cores during the complex core drilling process.
  • the cores obtained in this way can be thoroughly analyzed after being lifted from the bottom of the water and can be used in particular for carrying out a large number of test bores at different points for the creation of an exact geological profile.
  • It is an essential aspect of the invention is not to wait until the completion of the drilling with the beginning of the analysis of the cores. Rather, it is possible to obtain first data on the property and in particular on the construction of the drill core during the drilling process when the drill core is being removed from the drill string. Especially in the exploration of mineral resources, this first analysis of certain parameters allows a statement as to whether further drilling at one point still makes sense or should be discontinued. An unsuccessful hole can thus be detected and terminated early, which saves time and money.
  • a preferred embodiment of the invention is that a data transmission device is provided, with which the determined data can be transmitted to a remote center.
  • the data transmission can be wireless or wired. This allows for early analysis of cores on, for example, the supply ship or a remote center while the test well continues to run.
  • a particularly efficient method implementation is achieved according to a further development of the underwater drilling device according to the invention in that the data processing device has an evaluation unit in which decision criteria are stored and which is designed to make a decision about a progress or termination of the bore based on the stored decision criteria .
  • Minimum or maximum values for particular physical or chemical quantities, which are of particular importance for a decision on the progress or termination of the well, may be provided as decision criteria.
  • a statement about the electrical conductivity or the induction behavior of the drill core may indicate that special metallic minerals are present or not present.
  • These decision criteria can be determined by pre-testing or empirical results from previous drilling. The decision criteria depend to a large extent on the respective type of mineral resources, which are searched for purposefully.
  • the sensor device can be designed and arranged in any desired manner.
  • the at least one sensor device is arranged annularly and in the region above the borehole opening.
  • the well bore may be a downhole closure or other arrangement for stabilizing the well bore opening.
  • the sensor device can be configured so that a determination is also made without contact by the wall of the tubular receptacle, for example by an interaction with a magnetic or electromagnetic field. For example, an increased or decreased proportion of petroleum in a rock can significantly alter its electromagnetic resonance behavior and its conductivity.
  • a suitable sensor device can be selected. It may also be provided optical sensors or sensors for measuring the radioactivity. According to a preferred embodiment of the invention, it is provided that the sensor device is designed to measure an inductance, electrical conductivity, a capacitance and / or further physical or chemical variables. In particular, various types of sensors can be provided in an annular housing, so that at the same time a review and analysis can be carried out according to different characteristics.
  • the receptacle is tubular formed as a core raw catcher, which has at its upper end a connection means for the discharge device.
  • the core pipe catcher can be formed, in particular, as a thin-walled pipe made of a metal or a plastic, in which an inner remaining bottom area as a drill core is bored in a hole when the tubular drill string is bored. insertion space of the core pipe catcher.
  • the receptacle with the drill core enclosed therein can be pulled out of the drill pipe via the discharge device and conveyed to the second storage area, wherein the receptacle with the drill core is deposited at a specific intended storage location of the second storage area becomes.
  • the discharge device can be released from the receptacle, so that after a further drilling step, a further receptacle can be removed with a drill core.
  • the discharge device comprises a winch with a hoisting rope, at the free end of a locking device is arranged, which cooperates with a connecting device on the receptacle for the core.
  • the locking device may in particular be a hook arrangement, which engages in an approximately formed as an eyelet connection means on the tubular receptacle. In this way, a positive connection for discharging the recording with the core can be formed.
  • connection methods such as an electromagnetic connection by an arrangement of corresponding electromagnets.
  • a further preferred embodiment of the invention consists in that the base frame is connected to a supply ship via a maritime umbilical cord.
  • the maritime umbilical cord can be provided both for the supply of energy, in particular electrical energy and hydraulic fluid, as well as a data line for data communication.
  • the maritime umbilical cord can also be designed as a hoisting rope with which, in addition to the supply function, the underwater drilling device can be lowered and lifted again.
  • the object stated at the outset is achieved by virtue of at least one physical and / or chemical property of the drill core by means of at least one sensor device which is arranged on the base frame in a surrounding region of the drilling axis is determined, and that the data determined thereby are stored in a data processing device together with the data to the storage location of the core in the second storage area.
  • the inventive method can be carried out in particular with the underwater drilling device described above.
  • a preferred variant of the method according to the invention is that based on the determined data on the at least one physical and / or chemical property of the drill core, a decision about a continuation or termination of the hole is taken while the drilling device continues to be in the water on the Water bottom are located. This decision then preferably be made by the underwater drilling device itself by an evaluation in the data processing device or by remote data transmission from a remote center, such as on the supply ship or a station on land.
  • 1 is a schematic perspective view of an underwater
  • Fig. 2 is a schematic side view of the underwater drilling apparatus of Fig. 1;
  • Fig. 3 is a schematic representation with a plurality of test bores.
  • the structure and function of an underwater drilling device 10 according to the invention will be explained in connection with FIGS. 1 and 2.
  • the underwater drilling apparatus 10 comprises a box-shaped base frame 12 which is constructed of steel girders.
  • a vertically directed drill guide 24 is provided, along which a drill drive 20 is mounted and driven with a clamping device 22 for clamping drill pipe elements 32 vertically movable along a drilling axis 21.
  • the drill drive 20 is displaceable perpendicular to the drilling axis 21 in a horizontal direction along a transverse rail 23 of the drilling axis 21 away.
  • the drill drive 21 can serve as part of a feed device 38 to grip in a first storage area 14 of the base frame 12, not shown, mounted drill string elements 32 and to guide them into the drilling axis 21.
  • the feed device 38 which is indicated only schematically, can have further handling devices in order to grasp, in a known manner, vertically oriented, mounted drill pipe elements 32 and to convey them to the drilling axis 21.
  • a new drill pipe element 32 is connected to an existing drill pipe element 32 by means of a screw connection.
  • a drill string element 32 In this initial drill pipe element 32, a drill head 31 with ground-removing cutting tools is provided at the lower end.
  • a cylindrical core of the upcoming soil material is formed. This drill core is received in a tubular receptacle 34, which is arranged in the interior of the drill string 30.
  • the drilling drive 20 For discharging the tubular receptacle 34 with the core arranged and held therein, the drilling drive 20 is first moved out of the drilling axis 21. Subsequently, a hoisting cable 43 of an evacuation device 40 is moved into the area of the drilling axis 21 via a pivoting lever mechanism 41. At the lower free end of the hoist cable 43, a sleeve-shaped locking device 44 is provided. The hoisting cable 43 extends from a laterally attached to the base frame 12 The winch 42 is lowered over the winch 42 several times on the frame deflected hoist rope 43 down, wherein the locking device 44 on the hoist cable 43 with a connecting device 36 at the upper end of the sleeve-shaped receptacle 34 comes into engagement.
  • the sleeve-shaped receptacle 34 is conveyed to the core through the discharge device 40 laterally to a second storage area 15 on the base frame 12 and stored therein. Also with regard to the second storage area 15, the magazine-like bearing is not shown in detail for reasons of clarity.
  • the sleeve-shaped receptacles 34 with the cores located therein are stored vertically in brackets, so that the cores can be transported for further investigation together with the underwater drilling apparatus 10 after completion of drilling to a supply ship, not shown.
  • an annular sensor device 50 is provided concentrically to the drilling axis 21 directly above the borehole opening 18, on which a clamping unit 17 for holding the drill pipe 30 is arranged.
  • the sensor device 50 is designed with non-contact sensors for determining physical and / or chemical properties of the drill core.
  • a data processing device 52 is provided, in which the respectively determined data can be stored to a core.
  • the position data and in particular the storage location at which the respective core is stored in the second storage area 15 can also be stored with the data processing device 52. In the case of a subsequent further analysis of the drill cores, this allows targeted access to the drill cores, which after the first on-site analysis and the data transmitted in advance by the data processing device 52 are of particular interest for a further investigation.
  • the removal device 40 is again moved away from the drilling axis 21, so that subsequently the drilling drive 20 is connected to a new drill pipe element 32 from the first storage area.
  • rich 14 can be moved back into the drilling axis 21.
  • the new drill string member 32 may then be connected to the upper drill string member 32 of the drill string 30.
  • the drill pipe 30 can be drilled again by a drilling step by the length of a drill pipe element 32 in the water bottom 5.
  • a new core is formed, which can be removed according to the method described above from the drill pipe 30 and stored again in the second storage area 15. It can then be done according to further drilling steps, if desired.
  • FIG. 3 schematically shows the determination of a mineral resource deposit 7 in a water bottom 5 by means of an underwater drilling device 10 according to the invention and a method according to the invention.
  • the underwater drilling device 10 is first placed on the water bottom 5 to create a first bore 8.1. There then takes place a stepwise drilling with procurement and investigation of the drill cores, as described above in connection with FIGS. 1 and 2.
  • the first borehole 8.1 no data on a mineral resource 7 was found by the underwater boring device 10 according to the invention in the immediate analysis of the cores obtained locally. Accordingly, the first bore 8.1 is performed up to the maximum achievable drilling depth, which is represented by the drill pipe 30 with four drill pipe elements 32 in the present case.
  • the underwater drilling apparatus 10 can be moved to a second position to perform a second bore 8.2.
  • the second drilling step in the creation of the second bore 8.2 can be found in the in-situ investigation of the core, that in this hole area the treasure 7 in this depth is over again. Since this can be determined immediately by an evaluation unit, a continuation of the second bore 8.2 can be terminated.
  • the underwater drilling device 10 can then be set to perform additional holes 8.3, 8.4, 8.5 and 8.6 again.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Soil Sciences (AREA)
  • Remote Sensing (AREA)
  • Geophysics (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

L'invention concerne un dispositif de forage immergé et un procédé d'obtention et d'analyse d'échantillons de sol du fond d'un plan d'eau. Pour cela, on fait descendre un dispositif de forage immergé comprenant un bâti support dans un plan d'eau et on le pose sur le fond de ce plan d'eau. Dans une première étape de forage, au moyen d'un mécanisme de forage monté sur le bâti support de manière à pouvoir se déplacer verticalement, on enfonce un train de tiges constitué d'au moins un élément de train de tiges tubulaire dans le fond du plan d'eau. Ce faisant, une carotte est reçue dans un réceptacle à l'intérieur de l'élément de train de tiges tubulaire. On dépose alors le réceptacle avec la carotte à un emplacement de stockage d'une deuxième zone de stockage sur le bâti support. Ensuite, on effectue au moins une autre étape de forage avec un autre élément de train de tiges. A l'aide d'au moins un système de détection disposé sur un bâti support dans une zone voisine de l'axe de forage, on détermine au moins une propriété physique et/ou chimique de la carotte puis on sauvegarde les données ainsi obtenues dans un équipement de traitement de données conjointement avec les données relatives à l'emplacement de stockage de la carotte dans la deuxième zone de stockage.
EP14729223.9A 2014-05-13 2014-05-13 Dispositif de forage immergé et procédé d'obtention et d'analyse d'échantillons de sol du fond d'un plan d'eau Active EP3117068B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2014/059760 WO2015172818A1 (fr) 2014-05-13 2014-05-13 Dispositif de forage immergé et procédé d'obtention et d'analyse d'échantillons de sol du fond d'un plan d'eau

Publications (2)

Publication Number Publication Date
EP3117068A1 true EP3117068A1 (fr) 2017-01-18
EP3117068B1 EP3117068B1 (fr) 2019-03-06

Family

ID=50928056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14729223.9A Active EP3117068B1 (fr) 2014-05-13 2014-05-13 Dispositif de forage immergé et procédé d'obtention et d'analyse d'échantillons de sol du fond d'un plan d'eau

Country Status (7)

Country Link
US (1) US9909377B2 (fr)
EP (1) EP3117068B1 (fr)
JP (1) JP6307177B2 (fr)
CN (1) CN106661932B (fr)
CA (1) CA2944062C (fr)
ES (1) ES2729345T3 (fr)
WO (1) WO2015172818A1 (fr)

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JP5912613B2 (ja) * 2012-02-07 2016-04-27 株式会社竹中工務店 掘削孔の掘削精度計測装置及び掘削孔の掘削精度計測方法
CN104334830A (zh) * 2012-06-22 2015-02-04 诺蒂勒斯矿物太平洋有限公司 用于在海底钻井作业中启动井下工具的设备、系统和方法
WO2014015362A1 (fr) * 2012-07-27 2014-01-30 Nautilus Minerals Pacific Pty Ltd Appareil et procédé pour effectuer des essais sous-marins
EP2860341A1 (fr) * 2013-10-10 2015-04-15 Soil Machine Dynamics Limited Appareil de support sous-main destiné à supporter des moyens d'entraînement et appareil d'entraînement comprenant un tel dispositif de support

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CA2944062A1 (fr) 2015-11-19
US20170152719A1 (en) 2017-06-01
JP6307177B2 (ja) 2018-04-04
JP2017519130A (ja) 2017-07-13
US9909377B2 (en) 2018-03-06
WO2015172818A1 (fr) 2015-11-19
ES2729345T3 (es) 2019-10-31
CN106661932A (zh) 2017-05-10
EP3117068B1 (fr) 2019-03-06
CA2944062C (fr) 2018-11-06
CN106661932B (zh) 2020-12-22

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