US20120273272A1 - Lockable core barrel head for drilling system and survey instrument assembly provided with a connection link for arrangement in a drilling system - Google Patents
Lockable core barrel head for drilling system and survey instrument assembly provided with a connection link for arrangement in a drilling system Download PDFInfo
- Publication number
- US20120273272A1 US20120273272A1 US13/508,140 US201013508140A US2012273272A1 US 20120273272 A1 US20120273272 A1 US 20120273272A1 US 201013508140 A US201013508140 A US 201013508140A US 2012273272 A1 US2012273272 A1 US 2012273272A1
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- United States
- Prior art keywords
- connection
- survey instrument
- core barrel
- instrument assembly
- assembly
- 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.)
- Abandoned
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- 238000005553 drilling Methods 0.000 title claims abstract description 35
- 241001449342 Chlorocrambe hastata Species 0.000 claims abstract description 26
- 238000005259 measurement Methods 0.000 claims abstract description 3
- 210000000078 claw Anatomy 0.000 claims description 20
- 239000007787 solid Substances 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
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
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/06—Releasing-joints, e.g. safety joints
Definitions
- the invention relates to a core barrel head for a wire line operated drilling system used for taking core samples of bedrock, as described in the introduction to claim 1 .
- the invention also relates to a survey instrument assembly provided with a connection link for arrangement in a drilling system, as described in the introduction to claim 7 .
- a survey instrument assembly provided with a connection link for connection to a spearhead, drill pipe, latch assembly, core barrel head or other drilling or geotechnical equipment.
- knowing bore hole trajectory (depth, azimuth and inclination) as well as rotational orientation of the core sample are vital information to be able to process the data given by the collected core.
- the main object of the invention is to improve prior art core drilling technology. More specifically it is an object to provide a core barrel head, allowing accurate reading and logging of the core sample rotational orientation without increasing the total length between the core catcher and latch unit or reduce free space/length inside the inner tube.
- the invention introduce to the marked a specially designed barrel head that can be locked/unlocked in any positions, more specifically locked for axial rotation, making it possible to do down hole readings of core sample rotational orientation, as well as the orientation of other down hole applications, without increasing the total length between the core catcher and latch unit or reduce free space/length inside the inner tube.
- a further object of this invention is to allow the recording of borehole and core sample inclination, without need of making a separate survey-run.
- An object of the invention is to provide a survey instrument assembly provided with a connection link arranged for connection to a spearhead or spearhead assembly.
- Another object of the invention is to provide a survey instrument assembly provided with a connection link arranged for connection to a drill pipe, latch assembly, core barrel head or other drilling or geotechnical equipment.
- a core barrel head according to the invention is described in claim 1 .
- Advantageous features of the core barrel head according to the invention are described in claims 2 to 6 .
- a survey instrument assembly according to the invention is described in claim 7 .
- Advantageous features of the survey instrument are described in claims 8 - 14 .
- a first aspect of the invention in the form of a core barrel head assembly provided with a latch unit equipped with instruments and mechanisms to access the inclination and rotational orientation of the core sample.
- a core barrel head for connection to a core barrel and inner tube for collecting core samples, and for connection to a latch assembly, with a sleeve for carrying the inner tube.
- the core barrel head further includes a controllable locking device arranged inside the core barrel head for locking the sleeve in a fixed rotational position relatively to the latch assembly, to allow measurement of the rotational orientation of the core samples.
- the locking device is provided with at least one movable locking pad, to engage the inner wall of the sleeve.
- the locking device comprises a locking element, which is movable relatively to a radial and/or axial face, to provide a locking between the sleeve and a spindle carried by the latch assembly.
- the locking pad(s) is/are arranged tiltable instead of being rotational or axially movable.
- the engagement/disengagement of the locking device is operated mechanically by the latch unit.
- the engagement/disengagement of the locking element is hydraulically operated.
- a survey instrument assembly is attached at the upper side of the latch assembly.
- a seventh aspect of the invention in the form of a survey instrument assembly provided with a connection link at a lower end arranged for connection to a spearhead, drill pipe, latch assembly, core barrel head or other drilling or geotechnical equipment.
- connection link is at an upper end provided with means for arrangement to the survey instrument assembly, such as a protruding element provided threads.
- connection link For connection to a spearhead the connection link is at a lower end of the body provided with a quick snap connection adapted for retaining the spearhead.
- connection link For connection to a drill pipe, latch assembly, core barrel head or other drilling or geotechnical equipment the connection link is at a lower end provided with a radial hole, via which hole a drill pipe, latch assembly, core barrel head or other drilling or geotechnical equipment can be connected by insertion of a pin in the radial hole.
- the survey instrument assembly is at an upper end provided with means, such as a spearhead point, for attachment to a wire line or a radial hole for attachment to suitable means for operating the survey instrument assembly.
- means such as a spearhead point
- connection means at the lower end of the connection link is a quick-snap connection provided with at claw for accommodating the spearhead and secure retaining of this, and for locking axial and rotational movement of this.
- the claw at the lower end of the connection link is provided with at least one claw arm being movable about an axes being offset from a central axis of the body.
- claw at the lower end of the connection link is provided with two arms being movable about parallel axes being offset from a central axis of the body.
- the claw arms at the lower end of the connection link are spring-biased and designed for retaining the spearhead.
- FIG. 1 is showing a side view of a drilling assembly for wire line suspension, with a core barrel head according to the invention at the lower end,
- FIG. 2 is showing an axial section of an embodiment of a lockable core barrel head according to the invention, for carrying an inner tube (not shown),
- FIG. 3 is showing a cross section through a further embodiment of a core barrel head according to the invention, with an alternative locking means,
- FIG. 4 show a side view of a survey instrument assembly for wire line suspension, with a connection link provided with a quick snap connection according to the invention at the lower end,
- FIG. 5 a is showing a perspective view of a connection link provided with a quick snap connection according to the invention
- FIG. 5 b is showing a cross sectional view of a the connection link in FIG. 5 a .
- FIG. 5 c is showing a perspective view of an alternative connection link.
- FIG. 1 shows at the upper end of a drilling system 10 a spearhead point 11 for attachment to a wire line during operation, a survey instrument assembly 12 containing the circuits and units needed for logging the position of the drilling assembly, including the inclination and the rotational orientation of the core samples.
- a communication port 13 is arranged at the lower end of the survey instrument assembly 12 . Following the communication port 13 is a latch assembly 14 with a latch housing 15 and a pair of latch elements 16 and 17 .
- the latch elements 16 and 17 are operated by prior art technology to lock the drilling head assembly inside the core barrel.
- an axial threaded hole indicated at 18 is arranged, for the upper threaded end 19 of a core barrel head 20 according to the invention.
- the core barrel head 20 is locked with a locking nut 21 .
- Through the threaded hole 18 access to the interior of the latch assembly 14 is provided, to get an input for controlling the core barrel head according to the invention, as will be described.
- FIG. 2 shows the core barrel head 20 of FIG. 1 .
- Its main parts are a cylindrical spindle 22 with the treaded end 19 and with an axial bore 23 for a locking bolt 24 .
- the spindle 22 is carrying a spindle bushing 25 , a trust bearing 26 being arranged between the upper part of the spindle and the spindle bushing 25 .
- the spindle bushing 25 is connected to a spindle sleeve 27 with a threaded connection 28 .
- At the lower end of the spindle sleeve 27 there is a threaded bore 29 for carrying an inner tube collecting core samples. More structural and functional details of this assembly are described in the following.
- a slider or piston 30 is arranged at the upper end of the axial bore 23 of the spindle 22 .
- the piston 30 has a threaded bore 31 to be attached to the upper end of the locking bolt 24 .
- the upper end of the piston 30 carries an adjustment screw 32 protruding into the latch unit 14 . The adjustment screw 32 and thus the locking bolt 24 are operated from the latch unit 14 .
- the locking bolt 24 is extending through the bore 23 in the spindle 22 , and into a bore 33 in the spindle sleeve 27 .
- a hub 34 is arranged in the bore 33 .
- the hub 34 is carried by the lower end of the spindle 22 and is having a central axial bore 35 for the locking bolt 24 .
- two locking pads 38 , 39 are arranged in two opposing radial slots 36 , 37 .
- the inner end of the locking pads 38 , 39 are engaging a conical neck 40 on the locking bolt 24 with a ball 41 as connection.
- FIG. 3 an alternative embodiment of the invention is shown, with a core barrel head assembly 44 based on a sleeve 45 .
- the lower end of the sleeve 45 is accommodating a piston 46 and a downward projecting piston rod 47 linked to the sleeve 45 with a cross pin 48 .
- the piston rod 47 carries a lower screw spring 49 compressed between the piston 46 and a stop dish 50 locked with a locking ring 51 to the inner wall of the sleeve 45 .
- the screw spring 49 will urge the piston 46 towards an upper position.
- a stack of four roller bearings 52 , 53 , 54 , 55 is carried by a spindle 56 .
- the spindle 56 is protruding at the upper end of the core barrel head 44 .
- the top of the spindle 56 is provided with a flange 57 and a crossing hole 58 .
- the purpose of these parts is to connect the spindle 56 to the latch unit of FIG. 1 .
- the spindle 56 is at the lower end carrying a cylindrical nut 59 provided with a friction dish 60 facing the upper end of the piston 46 .
- the cylindrical nut 59 is fixed in an end position of the spindle 56 .
- An upper screw spring 61 is arranged behind the nut 59 for allowing the sleeve 45 to move forward between the spindle 56 and sleeve 45 when the pull force exceeds a certain load.
- the wall of the sleeve 45 has two openings 62 , 63 for access of drilling fluid.
- the drilling fluid will act upon the piston 46 and urge it downward, releasing the frictional locking of the sleeve 45 .
- the piston 46 When the piston 46 is engaged, the sleeve 45 will be free to rotate independently of the latch unit.
- the hub 34 of FIG. 2 may have alternative embodiments. Any locking means which can be operated by mechanical or hydraulic pressure may be utilized.
- the locking pads 38 , 39 may be replaced by a ring of compressible, expandable material being expandable by the force from a screw spring and releasable by hydraulic fluid.
- the locking pads 38 , 39 may be arranged tiltable instead of being rotational or axially movable.
- the piston 30 may also be operated by restricting the waterflow, thus building up a pressure inside the latch unit 14 .
- the spindle 56 of FIG. 3 may have a longitudinal bore, corresponding to bore 23 , extending throughout the spindle and through the friction dish 60 .
- the longitudinal bore may accommodate a locking bolt corresponding to the locking bolt 24 of the embodiment in FIG. 2 .
- the latch unit may engage this locking bolt to depress the piston 46 . This will be an alternative way of unlocking of the friction means.
- FIG. 4 shows a survey instrument assembly 12 provided with a spearhead point 11 for attachment to a wire line during operation.
- the survey instrument assembly 12 may also be provided with other suitable means replacing the spearhead point for operation of the survey instrument assembly 12 .
- a survey instrument assembly 12 contains circuits and units needed for logging the position of a drilling assembly, including the inclination and the rotational orientation of core samples or other geotechnical instruments.
- a communication port 13 is arranged at the lower end of the survey instrument assembly 12 .
- a survey instrument assembly 12 further includes a connection link 70 arranged for connection to a spearhead point 11 or spearhead assembly, as shown in FIGS. 5 a - b, or to a drill pipe, latch assembly, core barrel head or other drilling or geotechnical equipment as shown in FIG. 5 c.
- connection link 70 is formed by a mainly elongated body 71 which at its upper end is provided with means for connection to the survey instrument assembly 12 , such as a protruding element 72 provided with threads 73 adapted to a threaded hole at the lower end of the survey assembly 12 .
- the connection link 70 is provided with means for accommodating and retaining the spearhead point 11 , preferably in the form of a quick snap connection.
- a quick snap connection is, for example, provided by means of a claw 74 arranged for accommodating and secure retaining of the spearhead point 11 , and for locking the axial and rotational movement of this.
- a claw 74 including two claw arms 75 which are movable about two parallel axes 76 being offset from the central axis of the body 71 .
- the claw arms 75 are preferably spring-biased and designed for retaining the spearhead point 11 , and for locking the axial and rotational movement of this.
- connection link 70 adapted for connection to a drill pipe, latch assembly 14 , core barrel head 20 or other drilling or geotechnical equipment.
- the connection link 70 is here formed by a solid mainly elongated body 71 which at its upper end is provided with means for connection to the survey instrument assembly 12 , such as a protruding element 72 provided with threads 73 adapted to a threaded hole provided at a lower end of the survey assembly 12 .
- connection link 70 is provided with connection means adapted to connection means of a drill pipe, latch assembly 14 , core barrel head 20 or other drilling or geotechnical equipment for connection thereto.
- the connection means are in the shown example a radial hole 77 for insertion of a pin for secure connection to corresponding holes in a drill pipe, latch assembly, core barrel head 20 or other drilling or geotechnical equipment.
- connection link 70 By use of a survey instrument assembly 12 provided with a connection link 70 according to the invention the drill operation will become more rapid, due to the number of separate survey runs are reduced, as well as one will have better control of bore hole trajectory by continuous logging of bore hole trajectory.
- the survey instrument assembly 12 provided with a connection link 70 according to the invention provides MWD—Measure while Drilling—operation.
- connection link 70 may be used with the core barrel head 20 or without the core barrel head 20 .
- the survey instrument assembly provided with a connection link may be provided with other drilling equipment, such as packers or wedges, or geotechnical instruments.
- the claw of the connection link can include only one claw arm if the body is adapted with means for accommodating and retaining the spearhead, and for locked axial and rotational movement of this
- connection link may be adapted to other suitable connection means.
- connection link may be adapted to other suitable connection means.
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- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Drilling And Boring (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Core barrel head for connection to a core barrel for collecting core samples, and for connection to a latch assembly, to mount a drill assembly in a bore hole, with a sleeve for carrying the inner tube. A controllable locking device is arranged inside the core barrel head for locking the sleeve in a fixed rotational position relatively to the attached latch assembly, to allow measurement of the inclination and the orientation of the core. The invention also includes a survey instrument assembly provided with a connection link for connection to a spearhead, drill pipe, latch assembly, core barrel head or other drilling or geotechnical equipment.
Description
- The invention relates to a core barrel head for a wire line operated drilling system used for taking core samples of bedrock, as described in the introduction to claim 1.
- The invention also relates to a survey instrument assembly provided with a connection link for arrangement in a drilling system, as described in the introduction to claim 7. Especially a survey instrument assembly provided with a connection link for connection to a spearhead, drill pipe, latch assembly, core barrel head or other drilling or geotechnical equipment.
- When taking core samples of bedrock using core drilling equipment, knowing bore hole trajectory (depth, azimuth and inclination) as well as rotational orientation of the core sample are vital information to be able to process the data given by the collected core.
- Existing systems for reading the core sample orientation demands that total length between the core catcher and latch unit or free space/length inside the inner tube is reduced to accommodate the instrumentation.
- Existing systems for reading borehole inclination demands that a separate survey instrument is lowered inside the drill string by wire.
- The main object of the invention is to improve prior art core drilling technology. More specifically it is an object to provide a core barrel head, allowing accurate reading and logging of the core sample rotational orientation without increasing the total length between the core catcher and latch unit or reduce free space/length inside the inner tube.
- The invention introduce to the marked a specially designed barrel head that can be locked/unlocked in any positions, more specifically locked for axial rotation, making it possible to do down hole readings of core sample rotational orientation, as well as the orientation of other down hole applications, without increasing the total length between the core catcher and latch unit or reduce free space/length inside the inner tube.
- A further object of this invention is to allow the recording of borehole and core sample inclination, without need of making a separate survey-run.
- An object of the invention is to provide a survey instrument assembly provided with a connection link arranged for connection to a spearhead or spearhead assembly.
- Another object of the invention is to provide a survey instrument assembly provided with a connection link arranged for connection to a drill pipe, latch assembly, core barrel head or other drilling or geotechnical equipment.
- A core barrel head according to the invention is described in claim 1. Advantageous features of the core barrel head according to the invention are described in claims 2 to 6.
- A survey instrument assembly according to the invention is described in claim 7. Advantageous features of the survey instrument are described in claims 8-14.
- For performing core drilling there is provided a first aspect of the invention in the form of a core barrel head assembly provided with a latch unit equipped with instruments and mechanisms to access the inclination and rotational orientation of the core sample.
- According to the first aspect there is provided a core barrel head for connection to a core barrel and inner tube for collecting core samples, and for connection to a latch assembly, with a sleeve for carrying the inner tube. The core barrel head further includes a controllable locking device arranged inside the core barrel head for locking the sleeve in a fixed rotational position relatively to the latch assembly, to allow measurement of the rotational orientation of the core samples.
- According to the first aspect the locking device is provided with at least one movable locking pad, to engage the inner wall of the sleeve.
- According to a second aspect of the invention the locking device comprises a locking element, which is movable relatively to a radial and/or axial face, to provide a locking between the sleeve and a spindle carried by the latch assembly.
- According to a third aspect the locking pad(s) is/are arranged tiltable instead of being rotational or axially movable.
- According to a fourth aspect of the invention the engagement/disengagement of the locking device is operated mechanically by the latch unit.
- According to a fifth aspect of the invention the engagement/disengagement of the locking element is hydraulically operated.
- According to a sixth aspect of the invention a survey instrument assembly is attached at the upper side of the latch assembly.
- For performing core drilling, there is provided a seventh aspect of the invention in the form of a survey instrument assembly provided with a connection link at a lower end arranged for connection to a spearhead, drill pipe, latch assembly, core barrel head or other drilling or geotechnical equipment.
- The connection link is at an upper end provided with means for arrangement to the survey instrument assembly, such as a protruding element provided threads.
- For connection to a spearhead the connection link is at a lower end of the body provided with a quick snap connection adapted for retaining the spearhead.
- For connection to a drill pipe, latch assembly, core barrel head or other drilling or geotechnical equipment the connection link is at a lower end provided with a radial hole, via which hole a drill pipe, latch assembly, core barrel head or other drilling or geotechnical equipment can be connected by insertion of a pin in the radial hole.
- The survey instrument assembly is at an upper end provided with means, such as a spearhead point, for attachment to a wire line or a radial hole for attachment to suitable means for operating the survey instrument assembly.
- According to an eight aspect of the invention the connection means at the lower end of the connection link is a quick-snap connection provided with at claw for accommodating the spearhead and secure retaining of this, and for locking axial and rotational movement of this.
- According to a ninth aspect of the invention the claw at the lower end of the connection link is provided with at least one claw arm being movable about an axes being offset from a central axis of the body.
- According to a tenth aspect of the invention claw at the lower end of the connection link is provided with two arms being movable about parallel axes being offset from a central axis of the body.
- According to an eleventh aspect of the invention the claw arms at the lower end of the connection link are spring-biased and designed for retaining the spearhead.
- Further advantageous features and details of the invention will appear from the following example description.
-
FIG. 1 is showing a side view of a drilling assembly for wire line suspension, with a core barrel head according to the invention at the lower end, -
FIG. 2 is showing an axial section of an embodiment of a lockable core barrel head according to the invention, for carrying an inner tube (not shown), -
FIG. 3 is showing a cross section through a further embodiment of a core barrel head according to the invention, with an alternative locking means, -
FIG. 4 show a side view of a survey instrument assembly for wire line suspension, with a connection link provided with a quick snap connection according to the invention at the lower end, -
FIG. 5 a is showing a perspective view of a connection link provided with a quick snap connection according to the invention, -
FIG. 5 b is showing a cross sectional view of a the connection link inFIG. 5 a, and -
FIG. 5 c is showing a perspective view of an alternative connection link. -
FIG. 1 shows at the upper end of a drilling system 10 aspearhead point 11 for attachment to a wire line during operation, asurvey instrument assembly 12 containing the circuits and units needed for logging the position of the drilling assembly, including the inclination and the rotational orientation of the core samples. - A
communication port 13 is arranged at the lower end of thesurvey instrument assembly 12. Following thecommunication port 13 is alatch assembly 14 with alatch housing 15 and a pair oflatch elements latch elements - At the lower end of the
latch assembly 14 an axial threaded hole indicated at 18 is arranged, for the upper threadedend 19 of acore barrel head 20 according to the invention. Thecore barrel head 20 is locked with alocking nut 21. Through the threadedhole 18, access to the interior of thelatch assembly 14 is provided, to get an input for controlling the core barrel head according to the invention, as will be described. -
FIG. 2 shows thecore barrel head 20 ofFIG. 1 . Its main parts are acylindrical spindle 22 with thetreaded end 19 and with anaxial bore 23 for alocking bolt 24. Thespindle 22 is carrying a spindle bushing 25, a trust bearing 26 being arranged between the upper part of the spindle and the spindle bushing 25. The spindle bushing 25 is connected to aspindle sleeve 27 with a threadedconnection 28. At the lower end of thespindle sleeve 27, there is a threadedbore 29 for carrying an inner tube collecting core samples. More structural and functional details of this assembly are described in the following. - At the upper end of the
axial bore 23 of the spindle 22 a slider orpiston 30 is arranged. Thepiston 30 has a threadedbore 31 to be attached to the upper end of thelocking bolt 24. The upper end of thepiston 30 carries anadjustment screw 32 protruding into thelatch unit 14. The adjustment screw 32 and thus thelocking bolt 24 are operated from thelatch unit 14. - The locking
bolt 24 is extending through thebore 23 in thespindle 22, and into abore 33 in thespindle sleeve 27. In the bore 33 ahub 34 is arranged. Thehub 34 is carried by the lower end of thespindle 22 and is having a central axial bore 35 for the lockingbolt 24. In two opposingradial slots pads locking pads conical neck 40 on the lockingbolt 24 with aball 41 as connection. - When the locking
bolt 24 is not engaged by the latch unit, it is lifted to an upper position by ascrew spring 42 under thepiston 30. In this position, theconical neck 40 will expand thelocking pads splines 43 in the surrounding bore and thus lock thesleeve 27 in relation to the spindle. The locking is facilitated by mating splines on the free end of thelocking pads splines 43 on the surrounding wall of thebore 33. - When the locking
bolt 24 is engaged by thelatch assembly 14, thelocking pads splines 43. In this position, thespindle bushing 25 and thespindle sleeve 27 are allowed to rotate freely. - In
FIG. 3 an alternative embodiment of the invention is shown, with a corebarrel head assembly 44 based on asleeve 45. The lower end of thesleeve 45 is accommodating apiston 46 and a downward projectingpiston rod 47 linked to thesleeve 45 with across pin 48. Thepiston rod 47 carries alower screw spring 49 compressed between thepiston 46 and astop dish 50 locked with a lockingring 51 to the inner wall of thesleeve 45. Thescrew spring 49 will urge thepiston 46 towards an upper position. The purpose of this arrangement will appear from the following description. - A stack of four
roller bearings spindle 56. Thespindle 56 is protruding at the upper end of thecore barrel head 44. The top of thespindle 56 is provided with aflange 57 and acrossing hole 58. The purpose of these parts is to connect thespindle 56 to the latch unit ofFIG. 1 . - The
spindle 56 is at the lower end carrying acylindrical nut 59 provided with afriction dish 60 facing the upper end of thepiston 46. Thecylindrical nut 59 is fixed in an end position of thespindle 56. - An
upper screw spring 61 is arranged behind thenut 59 for allowing thesleeve 45 to move forward between thespindle 56 andsleeve 45 when the pull force exceeds a certain load. - Under the force of the
lower screw spring 49, the upper end of thepiston 46 is pressed against thefriction dish 60 attached to thecylindrical nut 59. The faces of the elements involved in the frictional locking may be suitably errated. - The wall of the
sleeve 45 has twoopenings piston 46 and urge it downward, releasing the frictional locking of thesleeve 45. When thepiston 46 is engaged, thesleeve 45 will be free to rotate independently of the latch unit. - The
hub 34 ofFIG. 2 may have alternative embodiments. Any locking means which can be operated by mechanical or hydraulic pressure may be utilized. Thelocking pads - The
locking pads - The
piston 30 may also be operated by restricting the waterflow, thus building up a pressure inside thelatch unit 14. - The
spindle 56 ofFIG. 3 may have a longitudinal bore, corresponding to bore 23, extending throughout the spindle and through thefriction dish 60. In an alternative embodiment, the longitudinal bore may accommodate a locking bolt corresponding to the lockingbolt 24 of the embodiment inFIG. 2 . The latch unit may engage this locking bolt to depress thepiston 46. This will be an alternative way of unlocking of the friction means. - Reference is now made to
FIG. 4 which shows asurvey instrument assembly 12 provided with aspearhead point 11 for attachment to a wire line during operation. Thesurvey instrument assembly 12 may also be provided with other suitable means replacing the spearhead point for operation of thesurvey instrument assembly 12. Asurvey instrument assembly 12 contains circuits and units needed for logging the position of a drilling assembly, including the inclination and the rotational orientation of core samples or other geotechnical instruments. Acommunication port 13 is arranged at the lower end of thesurvey instrument assembly 12. - A
survey instrument assembly 12 according to the invention further includes aconnection link 70 arranged for connection to aspearhead point 11 or spearhead assembly, as shown inFIGS. 5 a-b, or to a drill pipe, latch assembly, core barrel head or other drilling or geotechnical equipment as shown inFIG. 5 c. - Reference is now made to
FIGS. 5 a-b which show details of aconnection link 70 arranged for connection to aspearhead 11. Theconnection link 70 is formed by a mainlyelongated body 71 which at its upper end is provided with means for connection to thesurvey instrument assembly 12, such as a protrudingelement 72 provided withthreads 73 adapted to a threaded hole at the lower end of thesurvey assembly 12. At a lower end of thebody 71 theconnection link 70 is provided with means for accommodating and retaining thespearhead point 11, preferably in the form of a quick snap connection. A quick snap connection is, for example, provided by means of aclaw 74 arranged for accommodating and secure retaining of thespearhead point 11, and for locking the axial and rotational movement of this. In the example there is shown aclaw 74 including twoclaw arms 75 which are movable about twoparallel axes 76 being offset from the central axis of thebody 71. Theclaw arms 75 are preferably spring-biased and designed for retaining thespearhead point 11, and for locking the axial and rotational movement of this. - Reference is now made to
FIG. 5 c which shows details of aconnection link 70 adapted for connection to a drill pipe,latch assembly 14,core barrel head 20 or other drilling or geotechnical equipment. Theconnection link 70 is here formed by a solid mainlyelongated body 71 which at its upper end is provided with means for connection to thesurvey instrument assembly 12, such as a protrudingelement 72 provided withthreads 73 adapted to a threaded hole provided at a lower end of thesurvey assembly 12. At a lower end of thesolid body 71 theconnection link 70 is provided with connection means adapted to connection means of a drill pipe,latch assembly 14,core barrel head 20 or other drilling or geotechnical equipment for connection thereto. The connection means are in the shown example aradial hole 77 for insertion of a pin for secure connection to corresponding holes in a drill pipe, latch assembly,core barrel head 20 or other drilling or geotechnical equipment. - By using a
survey instrument assembly 12 provided with aconnection link 70 as described above it will be possible to always have thesurvey instrument assembly 12 close to the drilling assembly, which is preferable for the accuracy of the drilling operation. - By use of a
survey instrument assembly 12 provided with aconnection link 70 according to the invention the drill operation will become more rapid, due to the number of separate survey runs are reduced, as well as one will have better control of bore hole trajectory by continuous logging of bore hole trajectory. In other words thesurvey instrument assembly 12 provided with aconnection link 70 according to the invention provides MWD—Measure while Drilling—operation. - The above described
connection link 70 may be used with thecore barrel head 20 or without thecore barrel head 20. - The survey instrument assembly provided with a connection link may be provided with other drilling equipment, such as packers or wedges, or geotechnical instruments.
- The claw of the connection link can include only one claw arm if the body is adapted with means for accommodating and retaining the spearhead, and for locked axial and rotational movement of this
- The means for connection of the survey instrument assembly to the connection link may be adapted to other suitable connection means.
- The means for connection of a drill pipe, latch assembly, core barrel head or other drilling or geotechnical equipment to the connection link may be adapted to other suitable connection means.
- 10 drilling head assembly
- 11 spearhead point
- 12 survey instrument assembly
- 13 communication port assembly
- 14 latch assembly
- 15 latch housing
- 16, 17 latch elements
- 18 hole in latch assembly
- 19 threaded end
- 20 core barrel head
- 21 locking nut
- 22 spindle
- 23 axial bore
- 24 locking bolt
- 25 spindle bushing
- 26 thrust bearing
- 27 spindle sleeve
- 28 threaded connection
- 29 threaded bore
- 30 piston
- 31 threaded bore
- 32 adjustment screw
- 33 bore in the spindle sleeve
- 34 hub
- 35 axial bore
- 36, 37 slots for locking pads
- 38, 39 locking pads
- 40 conical neck
- 41 ball
- 42 screw spring
- 43 splines
- 44 core barrel head assembly
- 45 sleeve
- 46 piston
- 47 piston rod
- 48 cross pin
- 49 lower screw spring
- 50 stop dish
- 51 locking ring
- 52-55 roller bearings
- 56 spindle
- 57 flange
- 58 crossing hole
- 60 friction dish
- 61 upper screw spring
- 62, 63 openings
- 70 connection link
- 71 body
- 72 protruding element
- 73 threads
- 74 claw
- 75 claw arms
- 76 parallel axes
- 77 radial hole
Claims (14)
1. Core barrel head (20) for connection to a core barrel for collecting core samples, and for connection to a latch assembly (14), with a sleeve (27) for carrying an inner tube, characterized in that a controllable locking device (38, 39; 60) is arranged inside the core barrel head (20) for locking the sleeve (27) in a fixed rotational position relatively to the latch assembly (14), to allow measurement of the rotational orientation of the core samples.
2. Core barrel head according to claim 1 , characterized in that the locking device is provided with at least one movable locking pad (38, 39), to engage the inner wall of the sleeve (27).
3. Core barrel head according to claim 1 , characterized in that the locking device comprises a locking element (60), which is movable relatively to a radial and/or axial face, to provide locking between the sleeve (45) and a spindle (22, 56) carried by the latch assembly (14).
4. Core barrel head according to claim 2 , characterized in that engagement/disengagement of the locking device (38, 39) is operated mechanically by the latch unit (14).
5. Core barrel head according to claim 1 , characterized in that the engagement/disengagement of the locking element (60) is hydraulically operated.
6. Core barrel head according to claim 1 , characterized in that a survey instrument assembly (12) is attached at the upper side of the latch assembly (14).
7. Survey instrument assembly (12) containing circuits and units needed for logging the position of a drilling assembly, including the inclination and the rotational orientation of core samples or other geotechnical instruments, which survey instrument assembly at a lower end is provide with a connection means and at an upper end is provided with means (11) for connection to a wire line or other suitable means for operating a drilling assembly, characterized in that the survey instrument assembly (12) is provided with a connection link (70) at a lower end of the survey instrument assembly (12), which connection link (70) includes a body (71) which at an upper end thereof is provided with connection means (72) for connection to the survey instrument assembly (12) and at a lower end thereof is provided with connection means (74, 77) for connection to a spearhead (11), drill pipe, latch assembly (14), core barrel head (20) or other drilling or geotechnical equipment.
8. Survey instrument assembly according to claim 7 , characterized in that connection means (72) for connection to the survey instrument assembly (12) is a protruding element provided with threads (73) adapted to a threaded hole provided at a lower end of the survey instrument assembly (12).
9. Survey instrument assembly according to claim 7 , characterized in that the connection means (74) at the lower end of the body (102) for connection to a spearhead (11) is a claw arranged for accommodating and retaining the spearhead (11), and for locking axial and rotational movement of this.
10. Survey instrument assembly according to claim 9 , characterized in that the claw includes two claw arms (75), which arms (75) are movable about two parallel axes (76) being offset from a central axis of the body (71).
11. Survey instrument assembly according to claim 10 , characterized in that the claw arms (76) are spring-biased and designed for retaining the spearhead (11), and for locking axial and rotational movement of this.
12. Survey instrument assembly according to claim 9 , characterized in that the claw includes one claw arm (76) and that the body (71) is adapted for together with the claw arm (76) to accommodate and secure retain the spearhead (11), and for locking axial and rotational movement of this.
13. Survey instrument assembly according to claim 7 , characterized in that the body (71) is a solid body and the connection means (77) at the lower end are adapted to connection means of a drill pipe, latch assembly (14), core barrel (20) or other drilling or geotechnical equipment for connection thereto.
14. Survey instrument assembly according to claim 13 , characterized in that the connection means (77) at the lower end of the solid body (71) is a radial hole via which a drill pipe, latch assembly (14), core barrel (20) or other drilling or geotechnical equipment can be connected by insertion of a pin.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20093281A NO334083B1 (en) | 2009-11-04 | 2009-11-04 | Core drill head for drilling system |
NO20093281 | 2009-11-04 | ||
PCT/NO2010/000402 WO2011056077A1 (en) | 2009-11-04 | 2010-11-04 | Lockable core barrel head for drilling system and survey instrument assembly provided with a connection link for arrangement in a drilling system |
Publications (1)
Publication Number | Publication Date |
---|---|
US20120273272A1 true US20120273272A1 (en) | 2012-11-01 |
Family
ID=43970128
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/508,140 Abandoned US20120273272A1 (en) | 2009-11-04 | 2010-11-04 | Lockable core barrel head for drilling system and survey instrument assembly provided with a connection link for arrangement in a drilling system |
Country Status (5)
Country | Link |
---|---|
US (1) | US20120273272A1 (en) |
AU (1) | AU2010315986A1 (en) |
CA (1) | CA2779932A1 (en) |
NO (1) | NO334083B1 (en) |
WO (1) | WO2011056077A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO20161581A1 (en) * | 2016-04-08 | 2017-10-09 | Huygens As | A core drilling system and method for obtaining an orientated rock core sample using said core drilling system |
CN111550210A (en) * | 2019-01-23 | 2020-08-18 | 中石化石油工程技术服务有限公司 | Coring tool for shale oil gas trapping and warm-pressing detection in tripping process |
US11466529B2 (en) | 2014-04-21 | 2022-10-11 | Longyear Tm, Inc. | Core barrel head assembly with an integrated sample orientation tool and system for using same |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8770322B2 (en) | 2012-08-23 | 2014-07-08 | Longyear Tm, Inc. | Latch body components having multiple functions, and drilling head assembly incorporating same |
BR112014017540A8 (en) | 2012-01-17 | 2017-07-04 | Globaltech Corp Pty Ltd | Improvements to equipment and methods for topography and well data acquisition for a drilling operation |
BR112014033068A2 (en) * | 2012-08-23 | 2017-06-27 | Longyear Tm Inc | lock structure, and drill head assembly. |
AU2017210756A1 (en) * | 2016-01-27 | 2018-08-16 | Reflex Instruments Asia Pacific Pty Ltd | Method and system for enabling acquisition of borehole survey data and core orientation data |
WO2017176127A1 (en) * | 2016-04-08 | 2017-10-12 | Huygens As | A core drilling system and method for obtaining an orientated rock core sample using said core drilling system |
CN111636862A (en) * | 2020-07-10 | 2020-09-08 | 北京同永亨科技有限公司 | Five-claw positioning hanger for well logging |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2080978A (en) * | 1936-08-27 | 1937-05-18 | C M P Fishing Tool Corp | Method of taking oriented cores |
US2628816A (en) * | 1949-08-20 | 1953-02-17 | Raymond I Mahan | Core-sampling tool |
US5450913A (en) * | 1993-10-01 | 1995-09-19 | Gold Star Manufacturing, Inc. | Continuous soil sampling system and method |
CA2542679C (en) * | 2005-04-12 | 2009-02-24 | Advantage R&D, Inc. | Apparatus and methods for logging a well borehole with controllable rotating instrumentation |
US8020634B2 (en) * | 2005-10-05 | 2011-09-20 | Schlumberger Technology Corporation | Method and apparatus for supporting a downhole component in a downhole drilling tool |
-
2009
- 2009-11-04 NO NO20093281A patent/NO334083B1/en unknown
-
2010
- 2010-11-04 CA CA2779932A patent/CA2779932A1/en not_active Abandoned
- 2010-11-04 AU AU2010315986A patent/AU2010315986A1/en not_active Abandoned
- 2010-11-04 WO PCT/NO2010/000402 patent/WO2011056077A1/en active Application Filing
- 2010-11-04 US US13/508,140 patent/US20120273272A1/en not_active Abandoned
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11466529B2 (en) | 2014-04-21 | 2022-10-11 | Longyear Tm, Inc. | Core barrel head assembly with an integrated sample orientation tool and system for using same |
NO20161581A1 (en) * | 2016-04-08 | 2017-10-09 | Huygens As | A core drilling system and method for obtaining an orientated rock core sample using said core drilling system |
NO342901B1 (en) * | 2016-04-08 | 2018-08-27 | Huygens As | A core drilling system and method for obtaining an orientated rock core sample using said core drilling system |
CN111550210A (en) * | 2019-01-23 | 2020-08-18 | 中石化石油工程技术服务有限公司 | Coring tool for shale oil gas trapping and warm-pressing detection in tripping process |
Also Published As
Publication number | Publication date |
---|---|
CA2779932A1 (en) | 2011-05-12 |
NO20093281A1 (en) | 2011-05-05 |
WO2011056077A1 (en) | 2011-05-12 |
NO334083B1 (en) | 2013-12-09 |
AU2010315986A1 (en) | 2012-05-31 |
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Owner name: DEVICO AS, NORWAY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BORG, EIRIK;REEL/FRAME:028604/0020 Effective date: 20120626 |
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STCB | Information on status: application discontinuation |
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