EP0995010B1 - Kernbohrwerkzeug - Google Patents

Kernbohrwerkzeug Download PDF

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Publication number
EP0995010B1
EP0995010B1 EP98933379A EP98933379A EP0995010B1 EP 0995010 B1 EP0995010 B1 EP 0995010B1 EP 98933379 A EP98933379 A EP 98933379A EP 98933379 A EP98933379 A EP 98933379A EP 0995010 B1 EP0995010 B1 EP 0995010B1
Authority
EP
European Patent Office
Prior art keywords
core
suspension
assembly
tube
inner tube
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.)
Expired - Lifetime
Application number
EP98933379A
Other languages
English (en)
French (fr)
Other versions
EP0995010A1 (de
Inventor
Philippe Fanuel
Paul Serron
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.)
DII Industries LLC
Original Assignee
Halliburton Energy Services Inc
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 Halliburton Energy Services Inc filed Critical Halliburton Energy Services Inc
Publication of EP0995010A1 publication Critical patent/EP0995010A1/de
Application granted granted Critical
Publication of EP0995010B1 publication Critical patent/EP0995010B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E21B25/02—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe
    • 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
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/48—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core 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
    • E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors

Definitions

  • the present invention relates to a core barrel, in particular in the field of oil prospecting, comprising, on the one hand, an outer tube and a coring ring which form a external assembly and, on the other hand, an internal tube which forms with a carrot inside of it, and with part of the formations arranged under the foot of the carrot, an interior assembly, means of suspension and guide being provided to maintain the interior assembly in the whole exterior.
  • the inventors of the present invention resolutely chose to go against the grain with respect to the practice explained above and to consider that the inner tube and the core which is lodged there as as coring progresses must be relieved of the constraints that the above exterior assembly undergoes during the same coring and transmits to the interior assembly.
  • the suspension means and guide are arranged so that, at least at the location of these means, the interior assembly preserves, in relation to the whole exterior, a defined freedom of movement axial, radial and angular in order to isolate at at least partially the interior assembly of the brutal movements of the exterior assembly due to coring and thus protect the carrot contained in the inner tube and the formations located near the foot of said carrot.
  • the suspension and guide means comprise at least one stop swivel for suspension and support of the inner tube in the tube exterior, this stop being mounted therewith a radial, axial clearance and angular higher than the usual clearance.
  • the suspension and guide means include means for hydrostatic bearing in which pressurized core fluid form, during coring, one or more elastic cushions of radial, axial and angular localization.
  • means are arranged therein to maintain during core, in cooperation with the effects of fluid pressure coring on the interior assembly, the latter in lift in the exterior set between the limits of said freedom of movement and the aforementioned game.
  • Figure 1 shows an anterior end of a core barrel in which the present invention can be implemented.
  • Figure 2 shows the core sampler of Figure 1 at the location of the rear end of the inner tube and the suspension thereof in the outer tube.
  • Figure 3 shows on a larger scale the location of said suspension of the inner tube in the outer tube.
  • Figure 4 shows the ends on a larger scale anterior and inner tubes and the core bit.
  • FIG. 5 shows an embodiment of a means of intermediate guide implementing the present invention.
  • Figure 6 shows another embodiment of the suspension of the inner tube in the outer tube.
  • Figure 7 shows another variant of the means of suspension and / or guide of the inner tube in the outer tube.
  • Figure 8 shows a cross section along the plane VII-VII of figure 7.
  • Figure 9 shows, at the location of the posterior end of the inner tube and the suspension thereof in the outer tube, a "wireline" type corer whose anterior end can be similar to that shown in Figure 1.
  • Figure 10 shows, in a view similar to that of the Figure 9, an embodiment of a core barrel whose inner tube does not cannot be removed from the outer tube by the "wireline" technique.
  • Figure 11 shows on a larger scale the location of suspension mentioned above in Figure 10, the inner tube occupying a support position in the outer tube.
  • Figure 12 shows on the same scale as that of Figure 11, the same place of suspension, the inner tube occupying a so-called lift position in the outer tube.
  • the core barrel 1 ( Figures 1 and 2) of the invention comprises, from a share, an outer tube 2 and a core bit 3 which can be considered as forming an external assembly 4 and, on the other hand, at minus an inner tube 5 which can be considered as forming, with a core 6 possibly present inside of it, a interior set 7.
  • a core 6 possibly present inside of it, a interior set 7.
  • Means 9 for suspending and guiding the interior assembly 7, essentially of the interior tube 5, in the exterior assembly 4 are provided.
  • the means 9 for suspension and guide are arranged so that the interior assembly 7 preserved, at least in the place of these, compared to the whole exterior 4 greater freedom of movement than usual, axially, radially and angularly relative to the longitudinal axis of the exterior assembly 4.
  • element 13 carries for this purpose a male thread ( Figure 3) and the element 14 a female thread or vice versa.
  • a radial clearance can also be provided between said rotary stop 12 and, on the one hand, the elements 13, 14, and, on the other hand, the clamping elements 16 and 17.
  • the means 9 for suspension and guidance have at least one bearing 20 (Figures 1 and 4) and / or 21 ( Figure 5) radial support of the inner tube 5 in the outer assembly 4, this bearing 20, 21 being arranged so as to allow between the outer tubes 2 and inside 5 a radial clearance ( Figures 1 and 4), axial ( Figures 4 and 5) and angular (by a combination of radial and axial clearances greater than games usually adjusted).
  • the bearing 21 presents, for the part of the tube interior 5 which constitutes the tree, a barrel-shaped so as to increase possible angular play between the axes of the inner tubes 5 and exterior 2, and therefore flexibility of the mechanical connection to this place.
  • the means 9 for suspension and guidance may comprise (FIG. 6) elastic means 22.
  • These elastic means 22, intended for them also to soften the mechanical connection between the exterior assemblies 4 and interior 7 and to absorb shock transmission, may include rings 23 of rubber or synthetic material arranged by example above and below the mounted rotary stop 12, for the rest, like that of FIG. 3. These rings 23 can include annular beads 23A intended to cooperate with grooves in surrounding parts to ensure positioning adequate reciprocal of the constituent elements thus stacked.
  • the means 9 for suspending and guidance may include (FIG. 7) hydro-static bearing means 24 in which pressurized coring fluid, arriving from the surface by a central conduit 25 and exiting by radial conduits 26 shape during coring, between a cylindrical inner wall or conical 27 of the external assembly 4 and, opposite, an external wall cylindrical or conical 28 of the interior assembly 7, one or more cushions radial and angular localization elastic of this set interior 7 relative to the exterior assembly 4.
  • Adjustment and distribution of the coring fluid flow between the radial conduits 26 and standard connecting conduits 29 supplying the fluid from the central conduit 25 at the interval between the outer 2 and inner 5 tubes provides a pressure difference causing a centrifugal radial flow from the radial conduits 26, for example in chambers oblong 31 whose dimension (longitudinal) is visible in Figure 7 and the other dimension of which is visible in Figure 8.
  • Each room oblong 31 can then cause a cushion of fluid between the walls 27 and 28.
  • FIG. 9 shows a case of a core barrel 1 of the "wireline” type, in which the inner tube 5 is suspended in the outer assembly 4 due to its own weight and the pressure of the coring fluid arriving in 32 from the ground surface.
  • means 33 can be arranged to keep in progress coring, in cooperation with the effects of fluid pressure coring pushing the inner tube 5 down and with friction carrot 6 entering this inner tube 5, the latter in lift in the exterior assembly 4 between the limits of said freedom movement and the aforementioned game.
  • the means 33 can include example a set of bristles, or another coating, (not shown) disposed on the inner wall of the inner tube 5 to oppose with a known resistance to the entry of the core 6 into this tube 5.
  • the means 33 may alternatively include means for regulating the escape of a fluid contained in the inner tube 5, arranged so to oppose by an exhaust controlled a known resistance at the entry of the core 6 into the tube 5.
  • Means 33 may include a combination of coring fluid passages 34, including outlet ports 35 open onto a peripheral surface of the interior assembly 7, and internal surfaces 36 and 37 of the external assembly 4 which have different diameters.
  • the fluid outlet orifices 35 occupy at rest a position, shown in Figures 9 and 11, in which they face an internal surface 36 separated, so as to allow an exit therefrom not throttled with the coring fluid.
  • the inner tube 5 will tend to be pushed back by the carrot 6 in opposite direction in advance S of the core drilling, so as no longer to be pressed against a suspension shoulder 38 (FIGS. 9 and 11) of the exterior assembly 4. Therefore, the orifices 35 occupy a position shown in the figure 12, in which they gradually face another surface internal 37 less spaced from the orifices 35, so as to gradually throttle the outlet of the coring fluid and therefore increase its pressure upstream of the orifices 35 as the interior assembly 7 goes up in the exterior assembly 4.
  • the pressure increase will have tendency to push back in the direction of advance S of the core assembly interior 7 and a balance will be sought thus, away from the shoulder 38, between opposing thrusts due to said known resistance and the increase in fluid pressure which results from its constriction progressive.
  • the interior assembly 7 comprises at the rear end of its suspension and / or guide means 9 a gripping means 39, known per se in the technique of "wireline", from the inner tube 5 to at least remove it (with a core 6) of the outer tube 2.
  • the interior assembly 7 is similar to that of FIG. 9, except that it does not include any means gripping 39 because, for example due to a diameter restricted interior of the outer tube 4 upstream of the interior assembly 7 (considering the direction of flow of the coring fluid in the core barrel), the interior assembly 7 cannot be reassembled by said "wireline” technique.
  • the configuration of the conduits passage of the coring fluid from location 32 and directed towards the anterior end of the core barrel 1 may be different from that of Figure 9 and present for example a funnel shape. Pressure of this fluid at location 32 is transformed into the pushing force of the tube inside 5 in direction S towards said anterior end of the core barrel 1, in the coring position, to the exclusion of all mechanical means.
  • FIG. 7 shows, as a variant, that the means 9 of suspension and guide may include a ball joint 40 for increase the flexibility of mechanical connections between assemblies exterior 4 and interior 7.
  • Figure 4 shows that advantageously the crown 3 has an internal passage 41 whose diameter is greater than that that presents one or more knives 42: closest to its axis of rotation and intended to determine the external diameter of the core 6.
  • This is intended to give play to this place, so as to reduce a embedding the carrot 6 in the crown 3, and therefore not solicit this carrot 6 by unfavorable reactions from the crown 3 during work.
  • This embedding can also be reduced by reducing as much as possible the axial length of the so-called the internal guard 48 (FIGS. 1 and 4) of the crown 3 (that is to say the passage provided in it for the carrot 6).
  • the geometric dimensions of the means of suspension and guide 8 are preferably optimized in particular to increase clearances between these exterior 4 and interior 7 assemblies, to reduce diameters and / or lengths (for example to reduce or avoid as soon as built-in) compared to what the skilled person has tendency to do so far.
  • a labyrinth seal 49 disposed on a body part 50 of the means suspension 9, below the rotating ball stop 12 (or, if applicable ball joint).
  • the labyrinth seal 49 may consist, for example, of an annular seal 51, mounted tight on the body part 50, and a ring support 52 which, for example, cooperates with the suspension shoulder 38 as described above and which has an annular groove in which the annular seal 51 can be housed with annular games.
  • a middle tube between the outer 2 and inner 5 tubes and substantially coaxial to these, may, as the case may be, be part of the exterior assembly 4 or of the interior assembly 7.

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  • 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)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Electromagnets (AREA)
  • Joints Allowing Movement (AREA)

Claims (10)

  1. Kernbohrgerät, umfassend einerseits eine äußere Röhre (2) und deren Kernbohrkrone (3) (nachfolgend jeweils als äußerer Aufbau (4) bezeichnet), sowie andererseits eine innere Röhre (5) und den Bohrkern (6), der in Letzterer vorliegtund Teil der Formationen ist, die unter ihrem unteren Ende vorliegen (nachfolgend als innerer Aufbau (7) bezeichnet), sowie Mittel (9) zur Aufhängung und Führung, die vorgesehen werden, um den inneren Aufbau (7) im äußeren Aufbau (4) zu halten, dadurch gekennzeichnet, dass diese Mittel (9) zur Aufhängung und Führung derart vorgesehen sind, dass zumindest an der Stelle der Mittel (9), der innere Aufbau (7) im Hinblick auf den äußeren Aufbau (4) eine bestimmte axiale, radiale und winklige Bewegungsfreiheit beibehält, damit der innere Aufbau (7) zumindest teilweise von den aufgrund des Kernbohrens brutalen Bewegungen des äußeren Aufbaus (4) isoliert wird, und um auf diese Weise den Bohrkern (6), der in der inneren Röhre (5) enthalten ist, und die Formationen, die in der Nähe des unteren Endes des Bohrkerns (6) vorliegen, zu schützen.
  2. Kernbohrgerät nach Anspruch 1, dadurch gekennzeichnet, dass die Mittel (9) zur Aufhängung und Führung mindestens ein drehbahres Axiallager (12) zur Aufhängen und zur Auflage der inneren Röhre (5) in der äußeren Röhre (2) umfassen, wobei dieses Lager (12) dort mit einem radialen, axialen und angulären Spiel montiert ist, das größer ist als das herkömmliche Spiel.
  3. Kernbohrgerät nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Mittel (9) zur Aufhängung und Führung mindestens ein Traglager (20,21) der inneren Röhre (5) im äußeren Aufbau (4) umfassen, wobei dieses Traglager (20,21) vorgesehen wird, um zwischen der äußeren Röhre (2) und der inneren Röhre (5) ein radiales, axiales oder winkliges Spiel zuzulassen, das größer ist als das herkömmliche Spiel.
  4. Kernbohrgerät nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Mittel (9) zur Aufhängung und Führung elastische Mittel (22) umfassen.
  5. Kernbohrgerät nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Mittel (9) zur Aufhängung und Führung hydrostatische Drucklagermittel (24) umfassen in denen Kernbohrfluidum unter Druck während des Kernbohrens ein oder mehrere radial, axial und winklig angeordnete elastische Kissen bildet.
  6. Kernbohrgerät nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Mittel (9) zur Halterung und Führung mindestens ein Axialrollenlager (40) umfassen.
  7. Kernbohrgerät nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Mittel (33) vorgesehen sind, um im Laufe des Kernbohrens in Zusammenwirkung mit Effekten des Kernbohrfluidumsdrucks auf den inneren Aufbau (7) Letzteren im äußeren Aufbau (4) zwischen den Grenzen der besagten Bewegungsfreiheit und des vorgenannten Spiels schwimmend zu halten.
  8. Kernbohrgerät nach Anspruch 7, dadurch gekennzeichnet, dass die Mittel (33) zur Verleihung von Schwimmfähigkeit Mittel umfassen, die an der Innenwand der inneren Röhre (5) vorgesehen werden, so dass sie beim Eintritt des Bohrkerns (6) in diese Röhre (5) einem Widerstand entgegenwirken.
  9. Kernbohrgerät nach Anspruch 7, dadurch gekennzeichnet, dass die Mittel (33) zur Verleihung von Schwimmfähigkeit Mittel zur Regulierung des Austritts eines Fluidums umfassen, das in der inneren Röhre (5) enthalten ist, um beim Eintritt des Bohrkerns (6) in diese Röhre (5) einen Widerstand entgegen zu setzen.
  10. Kernbohrgerät nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Bohrkrone (3) einen inneren Durchgang (41) mit einem Durchmesser aufweist, der größer ist als derjenige, der ein oder mehrere Messer (42), die am nächsten an ihrer Rotationsachse liegen, aufweisen und dazu bestimmt sind den Außendurchmesser des Bohrkerns (6) zu bestimmen und dadurch, dass vorzugsweise die axiale Länge (48) der Abstreifmeißel der Bohrkrone (3) kurz sind.
EP98933379A 1997-07-08 1998-07-08 Kernbohrwerkzeug Expired - Lifetime EP0995010B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
BE9700590A BE1011266A3 (fr) 1997-07-08 1997-07-08 Carottier.
BE9700590 1997-07-08
PCT/BE1998/000104 WO1999002816A1 (fr) 1997-07-08 1998-07-08 Carottier

Publications (2)

Publication Number Publication Date
EP0995010A1 EP0995010A1 (de) 2000-04-26
EP0995010B1 true EP0995010B1 (de) 2004-03-17

Family

ID=3890624

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98933379A Expired - Lifetime EP0995010B1 (de) 1997-07-08 1998-07-08 Kernbohrwerkzeug

Country Status (7)

Country Link
US (1) US6341656B1 (de)
EP (1) EP0995010B1 (de)
BE (1) BE1011266A3 (de)
CA (1) CA2295655C (de)
DE (1) DE69822466T2 (de)
NO (1) NO316529B1 (de)
WO (1) WO1999002816A1 (de)

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US6729416B2 (en) 2001-04-11 2004-05-04 Schlumberger Technology Corporation Method and apparatus for retaining a core sample within a coring tool
US7055626B2 (en) * 2002-03-15 2006-06-06 Baker Hughes Incorporated Core bit having features for controlling flow split
US7431107B2 (en) * 2003-01-22 2008-10-07 Schlumberger Technology Corporation Coring bit with uncoupled sleeve
US20050133267A1 (en) * 2003-12-18 2005-06-23 Schlumberger Technology Corporation [coring tool with retention device]
US7942213B2 (en) * 2006-10-27 2011-05-17 Schlumberger Technology Corporation Using hydrostatic bearings for downhole applications
US20090133931A1 (en) * 2007-11-27 2009-05-28 Schlumberger Technology Corporation Method and apparatus for hydraulic steering of downhole rotary drilling systems
US8739898B2 (en) 2010-04-09 2014-06-03 Bp Corporation North America Inc. Apparatus and methods for detecting gases during coring operations
CN102296950B (zh) * 2011-05-16 2014-01-15 中海油田服务股份有限公司 一种液压剪切式取样钻具
US8613330B2 (en) 2011-07-05 2013-12-24 Schlumberger Technology Corporation Coring tools and related methods
CA2784195C (en) 2011-08-01 2014-08-05 Groupe Fordia Inc. Core barrel assembly including a valve
RU2509867C1 (ru) * 2012-07-27 2014-03-20 Общество с ограниченнной ответственностью "Фирма "Радиус-Сервис" Керноотборный снаряд
US11661810B2 (en) * 2016-01-27 2023-05-30 Reflex Instruments Asia Pacific Pty Ltd Method and system for enabling acquisition of borehole survey data and core orientation data
NO343861B1 (no) * 2016-02-16 2019-06-24 Comrod As Fremgangsmåte for innfesting av en komposittmast til grunnen.
CN108798574B (zh) * 2017-04-28 2024-06-21 中石化石油工程技术服务有限公司 一种带减震功能的双轴承钻井取芯悬挂装置
CN108286416B (zh) * 2017-12-07 2020-03-20 中国海洋石油集团有限公司 一种用于软地层的常规取心工具
CN108266146B (zh) * 2018-01-03 2024-03-12 中国石油天然气集团有限公司 石油钻井快速取心装置
CN108333012B (zh) * 2018-03-20 2023-12-05 山东大学 一种井口岩芯盛放和切分装置及其使用方法
CN110617022B (zh) * 2019-10-24 2024-07-19 四川康克石油科技有限公司 一种取心率高的取心钻具及其工作方法
CN111720084A (zh) * 2020-06-30 2020-09-29 中国石油天然气集团有限公司 水平井取心用分流悬挂装置
CN112377131B (zh) * 2020-10-29 2022-09-06 中煤科工集团西安研究院有限公司 一种近水平定向连续取芯装置与方法
CN113090194B (zh) * 2021-04-20 2022-07-19 中国地质科学院勘探技术研究所 取心钻头及取心钻具

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Also Published As

Publication number Publication date
DE69822466D1 (de) 2004-04-22
BE1011266A3 (fr) 1999-07-06
CA2295655C (en) 2007-06-26
DE69822466T2 (de) 2005-03-24
WO1999002816A1 (fr) 1999-01-21
NO20000057D0 (no) 2000-01-06
EP0995010A1 (de) 2000-04-26
NO20000057L (no) 2000-02-11
CA2295655A1 (en) 1999-01-21
US6341656B1 (en) 2002-01-29
NO316529B1 (no) 2004-02-02

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