WO2007137351A1 - Core orientation determination - Google Patents
Core orientation determination Download PDFInfo
- Publication number
- WO2007137351A1 WO2007137351A1 PCT/AU2007/000745 AU2007000745W WO2007137351A1 WO 2007137351 A1 WO2007137351 A1 WO 2007137351A1 AU 2007000745 W AU2007000745 W AU 2007000745W WO 2007137351 A1 WO2007137351 A1 WO 2007137351A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- core
- space
- reference member
- orientator
- face
- Prior art date
Links
- 239000007788 liquid Substances 0.000 claims abstract description 30
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000000717 retained effect Effects 0.000 claims description 4
- 238000005553 drilling Methods 0.000 description 5
- 238000000605 extraction Methods 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
- E21B25/16—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors for obtaining oriented cores
Definitions
- This invention relates to an orientation device for determining the orientation of the bore hole from which a core sample is extracted.
- orientation device which has been used in the past is known as the "Van Ruth Core Orientator" which is also disclosed in AU-240221. Another form is disclosed in US patent specification 4311201. In both cases the devices are intended to provide a record of the profile of the base of a bore hole prior to the drilling and extraction of a core from a borehole in order to assist in the accurate re-orientation of the extracted core relative to the previously extracted core when they are on the surface in order to assist in the analysis of the cores
- orientation devices have provided means of determining which part of the core is lowermost and examples of arrangements which providing such an indication are disclosed in AU-240221 , US-4311201 , WO-00/75480 and WO-03/038232.
- WO-03/038232 discloses a further arrangement which enables the inclination of the bore hole to be determined.
- AU-240221 and WO-03/038232 disclose an association between an orientation device such that the orientation device can be used in association with a core drill where the orientation device initially records the characteristics of the bore hole and is connected to the drill string such that subsequently the drill can be operated to cut a drill core and the orientation device can be extracted from the bore hole with the cut core at the conclusion of the drilling
- a core orientator comprising a body configured to be receivable in a bore hole and to be lowered into the bore hole, the body defining a space which in use is intended to receive a liquid, the space supporting a reference member which is at least substantially supported by the liquid, the reference member having a reference face with a centre, the reference member being weighted such that when the space is at least partially filled by the liquid, the centre will be uppermost, a clamping means adapted to clamp the reference member in position within the space on the lower end of the body being engaged with the bottom of the bore hole.
- the lower end of the body supports a face orientator having a face which in use is able to be forced into contact with the bottom of the bore hole and to provide an indication of the profile of the end of the bore hole.
- the reference member has a configuration of a sphere.
- the reference face of the reference member is provided with a set of circular graduations concentric with the centre.
- the core orientator is to be used in a bore hole in which liquid is present, and the body is adapted to permit the entry of the liquid into the space on being located in the liquid within the bore hole.
- the space accommodates the liquid.
- the space is defined by a closed reservoir having a wall which is deformable on engagement with the clamping means in order to fixable engage the reference member within the space, said deformation being permanent said space containing the reference member and liquid.
- the reservoir has the configuration of a sphere.
- the reservoir is removable from the body wherein in use the position of said deformation provides an indication of the position of the reservoir relative to the body.
- the clamping means is associated with a deformation means which is supported in the space proximate the reservoir and which is movable into engagement with the wall on the clamping means clampingly engaging the wall to cause the deformation means to cause said deformation of the wall.
- the deformation means comprises a separable element which on causing said deformation may be retained by the deformation.
- the - A - deformation means comprises a ball element supported in the space between the reservoir and the clamping means.
- the reference member is magnetised to have a North and South Pole at opposed sides of the reference member, said reference member bearing indicial indicative of the location of the North and/or the South Pole.
- the Poles are substantially equi-distant from the reference face.
- the face orientator comprises a plurality of axial pin elements which are slidably received within the body such that a force of a predetermined magnitude is required in order to slidably move the elements within the body.
- the clamping means comprises a clamping member slidably received in the body and extending between the one face and the space wherein the end of clamping member within the space is adapted to be engageable with the reference member, the upper end of the space being adapted to support the uppermost face of the reference member when engaged by the clamping member.
- the clamping member comprises an upper portion and a lower portion, both upper and lower portion being slidably received within the body along a common axis, a first locking means provided between the body and the one portion to retain the one portion in a position, the other portion being biased to an outermost position with respect to the face.
- the other end of the body is associated with a first tube clamping means which is adapted to clampingly retain the body within the inner tube of a core drill, said first tube clamping means being dis-engagable from the inner tube on the clamping means, clamping and engaging the reference member.
- a second clamping means is provided between the body and the inner tube, the second clamping means is adapted to clampingly engage the body within the tube to prevent axial movement of the body from the inner tube and permit axial movement of the body into the inner tube.
- the body is associated with a second clamping means which is adapted to retain the body within the inner tube of a core drill to prevent outward displacement of the body with relative to the inner tube.
- the density of the reference member approximates the density of the liquid.
- Figure 1 is a section elevation of a core orientator according to the first embodiment with the reference member in an undamped position;
- Figure 2 is a sectional elevation of the core orientator according to the first embodiment with the reference member in the clamped position;
- Figure 3 is a sectional elevation of the core orientator according to the first embodiment and as shown at Figure 1 in association with an inner tube of a core drill;
- Figure 4 is a sectional elevation of a core orientator according to the second embodiment with the reference member in the undamped position;
- Figure 5 is a sectional elevation of the core orientator according to the second embodiment with the reference member in the clamped position;
- the first embodiment as illustrated at Figures 1 , 2 and 3 comprises a core orientator which can be utilised in determining the orientation and position of a core in a bore hole (including the inclination and azimuth of the portion of the bore hole from which the core is extracted) prior to extraction of the core from the bore hole in order that the position can be replicated on the surface when it becomes necessary to identify the original position of the core within the ground.
- the embodiment comprises a body 11 which is intended to be lowered down a bore hole and which has a lower casing portion 13 which supports a face orientator generally corresponding to a "Van Ruth Core Orientator” and which comprises a set of elongate rods 15 which are slidably supported within the lower casing portion 13 of the body 11 such that they can be displaced axially with respect to the body.
- the slidable engagement of the rods 15 within the body 13 is effected with some frictional resistance in order that a predetermined magnitude of force needs to be applied in order to effect the displacement of the rods 15 within the body.
- the end face of the space remote from the lower casing portion 13 of the body 11 is formed of a reduced diameter portion 19 to define an annulus.
- the body is configured such that in use, when the core orientator is lowered into a bore hole containing a liquid, the liquid will fill the space 17.
- the space is associated with a tapered space 21 which is above the space 17 and open to the space 17 through the annulus.
- the space 17 accommodates a reference member 23 which is spherical and which has a density a little greater than the density of the liquid which is likely to be anticipated in the bore hole in order that it will be substantially supported by the liquid within the space.
- the reference member 23 is weighted and is provided with a reference face having a centre which will be uppermost when the reference member is supported by the liquid.
- the reference face 23 is provided with a set of circular graduations (not shown) which are concentric with the centre and which represent angular displacements away from the centre when supported in the liquid and which can provide an indication of the inclination of the bore hole when observed through the annulus.
- the reference member 23 accommodates a magnet or alternatively is magnetised to have a North and South Pole which are located at opposed side of the reference member 23 and are spaced equidistant from centre of the reference face 23.
- the reference face is provided with at least one marking representative of the markings of a compass. As a result when the reference face is observed though the annulus it can provide an indication of the azimuth of the bore hole.
- the lower casing portion 13 of the body 11 is formed with a central bore which slidably accommodates a clamping rod 27 which is restrained frictionally at the one end by an O-ring 31 supported within the bore.
- the one end of the clamping rod is located adjacent the space 17 and supports a bearing member 29 which is in opposed relation to the reference member 23.
- the other end of the clamping rod 27 is accommodated within the bore.
- the bore also slidably supports an actuating rod 35 which extends beyond the lower end of the lower casing portion 13.
- a pair of first biasing springs 37 are provided between the clamping rod 27 and the actuating rod 35 and serve to resiliently bias the actuating rod to its outermost position with respect to the lower casing portion at which position it extends beyond the lower ends of the rods 15 of the face orientator as shown at Figure 1.
- the body 11 is clampingly supported in the lower end of a drill tube 50 (see Figure 3).
- a drill tube 50 On the body being lowered into a bore hole it is carried with the inner tube 50 of the drill string (see Figure 3) to the bottom of the bore hole.
- the weight of the inner tube On the drill tube reaching the bottom of the bore hole the weight of the inner tube is borne by the body which will cause the actuating rod 35 to slide into the body until it reaches an intermediate position at which the free ends of the elongate rods 15 will engage the surface of the end face of the bore.
- the array of the outer ends of the elongate rods On further movement of the actuating rod 35 into the body the array of the outer ends of the elongate rods will adopt a profile according to the profile of the end face.
- the other end of the lower casing portion is closed by a plug 39 which is slidably accommodated within an upper casing portion 14 of the body 11 for axial movement relative to the plug.
- the lower end face of the plug 39 of the plug defines the tapered space 21 above the space 17 and the plug is separable from the body 11 to provide visual access to the portion of the reference face of the reference member 23 bounded by the annulus 19.
- the inner end of the tapered space resiliently supports a second bearing member 40 which is movable resiliently in the axial direction in the direction of the space 17.
- the inner end of the second bearing member 40 will bear on the upper face of the reference member, when not clampingly engaged, to hold the reference member away from the annulus. Because of the resultant point contact between the reference member 23 and the second bearing member 40 the reference member will be able to rotate as a result of it being weighted such that the centre is maintained uppermost.
- a shear pin 38 is mounted between the upper casing portion and the plug and serves to maintain the upper casing portion at its inner most position relative to the lower casing portion 13 as shown at Figure 1.
- the upper end of the upper casing portion 14 is closed by an end element 16 and a second biasing spring 42 is located between the plug and the end element 16 of the body and applies a biasing force between the lower and upper casing portions which would cause them to separate axially if not for the shear pin.
- the body is provided with a first tube clamping means provided at the upper end of the body 11 which is to clampingly engage with the inner bore of an inner tube
- the first tube clamping means comprises a locking cap 41 which is supported from the uppermost end of an extension 44 which is fixed at its lower end to the plug 39 and is slidable over the end element 16.
- the locking cap 41 is formed with a downwardly extending skirt 49 which is received over the upper end of the body and the opposed faces of the skirt and the body are of a complementary tapered configuration such that on the cap moving upwardly from the body the opposed faces will separate.
- the skirt is formed with a set of circumferentially spaced apertures which each accommodate a locking ball 51 which is to be entrapped between the tapered face of the upper end of the body and the inner tube 50.
- a third biasing spring 47 is provided between the end cap 41 and the end element of the body to pre- load and retain the shear pin 38.
- the reference member 23 On the actuating rod 35 moving inwardly into the body to cause the reference member 23 to be clampingly engage with the annulus, the reference member 23 will bear on the second bearing member 40 and thus on the lower end of the plug to cause the shear pin 38 to break. This will cause the plug 39 and end cap 41 to move upwardly within the upper casing portion 14 against the biasing action of the second biasing spring 42. This action will cause the locking cap to move away from the end element 16 (as shown at Figure 2) and will cause the locking balls to be released from being clamped between the end element 16 and the inner face of the inner tube 50. This releasing of the balls will then enable the locking cap to move to a position (not shown) away from the end element 16 and as result the first tube clamping means is deactivated fully.
- a second tube clamping means which comprises a set of circumferentially spaced keys or collets 53 which are accommodated within a tapered groove 55 provided in the inner face of the inner tube 50 and which will engage with the outer face of the body 11 whereby any outward movement of the body 11 relative to the inner tube 50 will cause the collets to become frictionally engaged between the inner tube and the body 11.
- the body 11 is retained in position within the inner tube 50 by the first and second tube clamping means whereby the first clamping means is released on the body being lowered into the hole such that the reference member is clamped into position to allow for slidable movement of the body within the inner tube while the second clamping means ensures that the resultant slidable movement of the body can only be inward with respect to the inner tube.
- the body In use the body is located in the lower end of an inner tube as described above such that the lower casing portion of the body extends from the lower casing portion 13 of the inner tube as shown at Figure 1 at which position the actuating rod 35 is located at its outermost position within the body 11 , and the clamping rod 27 is located at a most remote position from the reference member 23 as shown at Figures 1 and 3.
- the pins 15 are located at their outermost positions relative to the body 11. On the introduction of the core orientator into the bore hole and being lowered onto the bottom of the bore hole, the actuating rod 35 will be depressed such that it moves into the body 11.
- the reference member Because of the frictional retention of the clamping rod 27 within the bore of the body 11 by the O-rings 27, the reference member is held in its clamped position and because of the influence of the third biasing spring the first tube clamping means is held in its disengaged position. This will then cause the first biasing springs 37 to cause the slidable movement of the body along the actuating rod 35 to cause the body to move relative to the actuating rod away from the base of the bore hole and into the inner tube 50 beyond the outer end of the inner tube and the drill bit associated therewith (not shown) into the inner tube which will enable the core drill to be utilised to drill a core. The rotation of the drill bit and inner tube will cause the body to rotate about the actuating rod 35, while the continued operation of the drill bit will cause the body to move inwardly with the core.
- the inner tube, the cut core and the body are extracted from the bore hole.
- the body is then opened by separating the lower portion from the body to expose the annulus and the portion of the reference face visible through the annulus whereby the graduations and compass markings on the reference face can be used to provide an indication of the inclination of the bore hole, the azimuth of the bore hole and the lowermost part of the bore hole in the region from which the core has been extracted while the array of the outer ends of the elongate rods provide an indication of the profile of the face of the upper end of the core.
- the second embodiment as shown at Figures 4 and 5 differs from the first embodiment in regard to the nature of the space and the reference member supported thereby.
- the spaces 17 comprises a "ball compass" which comprises closed spherical reservoir which accommodates the reference member (not shown) in a liquid contained within the reservoir.
- the reference member is magnetised and is provided with compass indicia which at least comprise an indication of the position of the North and/or South Pole.
- the walls of the reservoir are transparent.
- the reference member is of the same form as that of the first embodiment with the exception its density approximates the density of the liquid.
- the reservoir is supported from the first bearing member 29 in opposed relation to the tapered space.
- clamping means is associated with a clamping ball 61 which is supported between the surface of the tapered space 21 and the reservoir and is able to move in an upward direction from a lowermost position on that surface.
- clamping ball 61 which is supported between the surface of the tapered space 21 and the reservoir and is able to move in an upward direction from a lowermost position on that surface.
- the clamping rod 25 On the inward movement of the clamping rod 25 the reservoir is forced against the clamping ball to cause indentation of the wall of the reservoir and thus the fixing of the reference member in position.
- the reservoir On removal of the body from the bore hole and the opening of the body the reservoir is extracted form the body. Because of the engagement of the clamping ball 61 into the indentation formed in the wall of the reservoir the clamping ball remains fixed to the reservoir. By means of the location of the clamping ball on the reservoir and the reading of the reference face of the reference member through the wall of the reservoir the inclination of the bore hole, the lowest portion of the bore hole and the azimuth of the borehole in the region of the extracted core can be determined.
- a further embodiment comprises a variation of the first embodiment and is of the same form with the exception that the space is sealed from the bore hole provided with a liquid to support the reference member.
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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)
- Earth Drilling (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2007266330A AU2007266330A1 (en) | 2006-05-31 | 2007-05-29 | Core orientation determination |
US12/299,159 US20090071716A1 (en) | 2006-05-31 | 2007-05-29 | Core orientation determination |
CA002651818A CA2651818A1 (en) | 2006-05-31 | 2007-05-29 | Core orientation determination |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2006902938A AU2006902938A0 (en) | 2006-05-31 | Core Orientation Determination | |
AU2006902938 | 2006-05-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007137351A1 true WO2007137351A1 (en) | 2007-12-06 |
Family
ID=38778012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU2007/000745 WO2007137351A1 (en) | 2006-05-31 | 2007-05-29 | Core orientation determination |
Country Status (4)
Country | Link |
---|---|
US (1) | US20090071716A1 (en) |
AU (1) | AU2007266330A1 (en) |
CA (1) | CA2651818A1 (en) |
WO (1) | WO2007137351A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101672170B (en) * | 2009-09-01 | 2013-10-23 | 中国地质大学(北京) | Novel electronic directional corer |
WO2019227123A1 (en) * | 2018-05-30 | 2019-12-05 | Briody Justin John | A tool assembly and related kit for in-situ borehole orientation |
CN110018510B (en) * | 2019-04-28 | 2024-04-09 | 核工业北京地质研究院 | Uranium ore core beta-gamma automatic cataloging and image scanning device |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3100350A (en) * | 1960-07-18 | 1963-08-13 | Clifford K Brown | Magnetic direction and inclination indicating device |
SU595495A1 (en) * | 1974-07-26 | 1978-02-28 | Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Буровой Техники | Device for measuring slope angle and direction of drill |
SU956743A1 (en) * | 1980-01-14 | 1982-09-07 | Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Буровой Техники | Device for extracting oriented core |
WO2003038232A1 (en) * | 2001-11-02 | 2003-05-08 | Industrial Innovations And Concepts Pty Ltd | Orientation device for a core sample |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2670179A (en) * | 1950-02-13 | 1954-02-23 | Richfield Oil Corp | Punch core orienting device |
US2824378A (en) * | 1953-06-12 | 1958-02-25 | Petroleum Recovery Engineering | Apparatus for determining the contour and position of obstructions in wells |
US5979569A (en) * | 1993-09-21 | 1999-11-09 | Simulprobe Technologies, Inc. | Method and apparatus for environmental sampling |
US5568838A (en) * | 1994-09-23 | 1996-10-29 | Baker Hughes Incorporated | Bit-stabilized combination coring and drilling system |
-
2007
- 2007-05-29 WO PCT/AU2007/000745 patent/WO2007137351A1/en active Application Filing
- 2007-05-29 AU AU2007266330A patent/AU2007266330A1/en not_active Abandoned
- 2007-05-29 US US12/299,159 patent/US20090071716A1/en not_active Abandoned
- 2007-05-29 CA CA002651818A patent/CA2651818A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3100350A (en) * | 1960-07-18 | 1963-08-13 | Clifford K Brown | Magnetic direction and inclination indicating device |
SU595495A1 (en) * | 1974-07-26 | 1978-02-28 | Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Буровой Техники | Device for measuring slope angle and direction of drill |
SU956743A1 (en) * | 1980-01-14 | 1982-09-07 | Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Буровой Техники | Device for extracting oriented core |
WO2003038232A1 (en) * | 2001-11-02 | 2003-05-08 | Industrial Innovations And Concepts Pty Ltd | Orientation device for a core sample |
Non-Patent Citations (2)
Title |
---|
DATABASE WPI Week 197903, Derwent World Patents Index; Class H01, AN 1979-05808B, XP003019827 * |
DATABASE WPI Week 198329, Derwent World Patents Index; Class Q49, AN 1983-715272, XP003019826 * |
Also Published As
Publication number | Publication date |
---|---|
CA2651818A1 (en) | 2007-12-06 |
AU2007266330A1 (en) | 2007-12-06 |
US20090071716A1 (en) | 2009-03-19 |
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