Abstract: A contactless orientation system coupled with an inner core tube to one or more record carriers on or associated with a core sample held in the core tube having a longitudinal core axis and a core face accessible from an end of the inner core tube. An instrument guide is coupled to the end of the core tube from which the core face is accessible with an axis of the guide parallel to the core axis. Correlation information is generated between a rotational orientation of a known point P on the instrument guide about the guide axis and core orientation data known to the contactless orientation system. The instrument acts as the record carrier or generates the record carrier provided with the correlation information enabling orientation of the core sample to its in-situ orientation when released from the core tube.

Abstract: Extracting a core sample from within a wellbore is optimized based on information extracted from acoustic signals that are generated downhole. The acoustic signals provide an indication of the formation being cored, which is used to obtain or adjust designated coring operating parameters for accomplishing an efficient and effective coring procedure. Coring operating parameters that are adjusted include weight on bit and bit rotational speed. Optimizing coring operating parameters reduces wear on the bit and produces samples with less fractures. Generating acoustic signals is done by the operation of coring itself, or contacting the formation with a coring bit. Contacting includes impacting the coring bit radially against the wellbore's sidewall, or moving the bit laterally after coring operations have initiated.

Abstract: Disclosed herein is a device and method for correlating core sample zones with an actual subterranean depth. The disclosed device has a pair of independent distance measuring devices operably in communication with a core sample apparatus where a first distance measuring device measures the length of a core sample entering a core sampling tube and a second distance measuring device measures a drive depth of the core sampling tube entering into the ground. A processing unit is provided for correlating the two distances so as to allow a determination as to the actual depth below ground from where a given zone of the core sample is extracted.

Abstract: Coring tools for procuring core samples from an earth formations may include an inner barrel and an outer barrel located around, and rotatable with respect to, the inner barrel. A coring bit may be affixed to an end of the outer barrel. A sensor module may be rotationally secured to the inner barrel. The sensor module may include at least one sensor configured to measure a dynamic response of the inner barrel during a coring process and a nontransitory memory operatively connected to the at least one sensor, the nontransitory memory configured to store data generated by the at least one sensor.

Abstract: A device for assisting in the positioning and sizing of an implant includes an elongate member and a block. The elongate member has length indicia at axial locations along a length for measuring a first distance from a predetermined datum of the elongate member. The block is attached to and movable along the elongate member. The block includes width indicia for measuring a second distance in a direction transverse to the first distance. A method for assisting in the positioning and sizing of an implant includes moving the elongate member along the block to axial locations along such member to determine an appropriate width and depth of insertion of the implant.

Abstract: The present invention relates to a coring system considering a tilt of a coring part and a method of compensating for a depth of a coring part using the same. A coring system according to the present invention includes: a coring part with a core to be filled with an object to be cored; a driving unit controlling upward/downward movement of the coring part; a rope connecting the coring part with the driving unit; and a tilt meter measuring a tilt of the coring part.

Abstract: A method and system of validating orientation of a core obtained by drilling the core from a subsurface body of material, the method including: a) determining that vibration from drilling is below a nominated level, b) recording data relating to orientation of the core to be retrieved, the data recorded using a downhole core orientation data recording device, c) separating the core from the subsurface body, and d) obtaining from the core orientation data recording device an indication of the orientation of the core based on the recorded data obtained when the vibration from drilling was below the nominated level and before the core was separated from the subsurface body.

Abstract: A system (10) for monitoring coring operations including a core sample marker (24) to rest in use on the top of a drilled core sample (14) within a core barrel (16). A cable (26) is connected at a first thereof to the core sample marker (24) and a cable tensioner (30) is provided above the core sample marker (24) to apply tension to the cable (26). A cable movement detector (32) is provided such that as the drilled sample (14) moves up the core barrel (16), the cable tensioner (30) draws the cable (26) up the core barrel (16) and the cable movement detector (32) determines the length of cable (26) drawn up the core barrel (16), thereby providing information regarding the distance traveled by the core sample marker (24).

Abstract: A core orientation device (10) for a core drill (12). The device (10) includes an arrangement (14) for providing signals (16) associated with a physical orientation (18) of the core orientation device (10). Processing means (22) are provided for processing the signals (16) so as to provide processed data (23) from which a measure (24) of the physical orientation (18) of the core orientation device (10) can be established. The measure (24) is associated with the physical orientation (18) of the device (10) at a particular moment in time. A memory (26) is coupled to the processing means 22 for storing the processed data 23. To this end there is provided an interface means (27) including first means (28) for storing the processed data (23) in the memory (26) and second means (30) for accessing the memory (26) to provide the measure (24) of the physical orientation (18) of core orientation device (10) when required.

Abstract: A core orientation device (10) for a core drill (12). The device (10) includes an arrangement (14) for providing signals (16) associated with a physical orientation (18) of the core orientation device (10). Processing means (22) are provided for processing the signals (16) so as to provide processed data (23) from which a measure (24) of the physical orientation (18) of the core orientation device (10) can be established. The measure (24) is associated with the physical orientation (18) of the device (10) at a particular moment in time. A memory (26) is coupled to the processing means 22 for storing the processed data 23. To this end there is provided an interface means (27) including first means (28) for storing the processed data (23) in the memory (26) and second means (30) for accessing the memory (26) to provide the measure (24) of the physical orientation (18) of core orientation device (10) when required.

Abstract: An apparatus for use in a downhole survey in conjunction with core sampling comprises a body adapted to receive a downhole surveying instrument, whereby the downhole surveying instrument can be conveyed along a borehole with the apparatus and operated in the borehole.

Abstract: Methods and systems for evaluating the subterranean formation of a wellbore are provided. In one embodiment, a geographical orientation of a downhole tool relative to Earth may be determined. The downhole tool may include a coring tool positioned to extract a core sample from a formation of the Earth. The orientation of the core sample with respect to the down hole tool also may be determined. Further, based on the geographical orientation of the downhole tool and the orientation of the coring sample, a geographical orientation of the core sample with respect to the Earth may be determined.

Abstract: A coring apparatus may be integrated with fluid analysis capabilities for in situ analysis of core samples from a subterranean formation. An instrumented coring apparatus may include an inner core barrel; an outer core barrel; a coring bit; and an instrumented core barrel having an analysis device in fluid communication with the inner core barrel.

Abstract: A core orientation head (12) comprises a substantially cylindrical body (28) having a first end (30) and an opposite end (34). A core face profile recording system (41) is carried by the body (28) to record a profile of the face of a core cut by a core drill in which the orientation head (12) is disposed. The system (41) comprises a plurality of pins (42) housed with an interference fit inside respective axially extending holes (38) provided in the body (28). A bearing scale (48) is marked on an outer circumferential surface 50 of the body (28). A cap (74) is demountably connectable to either of the ends (30) and (34). When connected to the end (30), the caps (74) protects the system (41). The caps (74) is also provided with a vernier scale (110) which, when the cap (74) is connected to the end (34), co-operates with the bearing scale (48) to facilitate marking of the core sample (46).

Abstract: A core orientation device (10) for a core drill (12). The device (10) comprises an arrangement (14) for providing signals (16) associated with a physical orientation (18) of the core orientation device (10). Processing means (22) are provided for processing the signals (16) so as to provide processed data (23) from which a measure (24) of the physical orientation (18) of the core orientation device (10) can be established. The measure (24) is associated with the physical orientation (18) of the device (10) at a particular moment in time. A memory (26) is coupled to the processing means 22 for storing the processed data 23. To this end there is provided an interface means (27) comprising first means (28) for storing the processed data (23) in the memory (26) and second means (30) for accessing the memory (26) to provide the measure (24) of the physical orientation (18) of core orientation device (10) when required.

Abstract: Methods and apparatus for positioning a downhole tool in a wellbore extending into a subterranean formation, commencing coring operations by rotating a coring bit of the downhole tool and extending the rotating coring bit into a sidewall of the wellbore, sensing a parameter associated with the coring operations, and adjusting the coring operations based on the sensed parameter.

Abstract: A coring apparatus including an outer core barrel associated with a drill bit; an inner core barrel adapted to accept a core sample; and at least one strain sensor adapted to measure strain experienced by the inner core barrel selected from the group consisting of tension and compression, wherein an output of the at least one strain sensor is indicative of entry of the core sample into the inner core barrel.

Abstract: Example downhole marking apparatus and methods to use the same are disclosed. A disclosed example apparatus includes a coring tool assembly for use in extracting a core sample from a subterranean formation adjacent a borehole; a sample container retainer operatively coupled to the coring tool assembly, wherein the sample container retainer is configured to hold a sample container configured to receive the core sample; and a scriber operatively coupled to the sample container retainer and configured to mark a surface of the sample container.

Abstract: A system (10) for monitoring coring operations including a core sample marker (24) to rest in use on the top of a drilled core sample (14) within a core barrel (16). A cable (26) is connected at a first thereof to the core sample marker (24) and a cable tensioner (30) is provided above the core sample marker (24) to apply tension to the cable (26). A cable movement detector (32) is provided such that as the drilled sample (14) moves up the core barrel (16), the cable tensioner (30) draws the cable (26) up the core barrel (16) and the cable movement detector (32) determines the length of cable (26) drawn up the core barrel (16), thereby providing information regarding the distance travelled by the core sample marker (24).

Abstract: An apparatus and method obtains a sample from a subterranean formation. The coring apparatus includes an outer core barrel associated with a drill bit; an inner core barrel adapted to accept a core sample; and sensors adapted to provide data relating to downhole conditions. The sensors may be one or more sensors the output of which is indicative of entry of a core sample into the inner core barrel.

Abstract: A core sample orientation system (10) comprising a first portion (11) and a second portion (12). The first portion (11) comprises a downhole unit adapted to be connected to a core tube of a core drill, and the second portion (12) comprises a control unit. The downhole unit (11) is adapted for cooperation with a core tube for recording data relating to the orientation of the core tube, and the control unit (12) is adapted to cooperate with the downhole unit to receive and process orientation data from the downhole unit and provide an indication of the orientation of a core sample within the core tube at a time prior to separation of the core sample from the underground environment from which it was obtained. The downhole unit (11) is configured to cooperate with the control unit (12) to establish an operative connection therebetween.

Abstract: A core orientation device (10) for a core drill (12). The device (10) comprises an arrangement (14) for providing signals (16) associated with a physical orientation (18) of the core orientation device (10). Processing means (22) are provided for processing the signals (16) so as to provide processed data (23) from which a measure (24) of the physical orientation (18) of the core orientation device (10) can be established. The measure (24) is associated with the physical orientation (18) of the device (10) at a particular moment in time. A memory (26) is coupled to the processing means 22 for storing the processed data 23. To this end there is provided an interface means (27) comprising first means (28) for storing the processed data (23) in the memory (26) and second means (30) for accessing the memory (26) to provide the measure (24) of the physical orientation (18) of core orientation device (10) when required.

Abstract: Example downhole marking apparatus and methods to use the same are disclosed. A disclosed example apparatus includes a coring tool assembly for use in extracting a core sample from a subterranean formation adjacent a borehole; a sample container retainer operatively coupled to the coring tool assembly, wherein the sample container retainer is configured to hold a sample container configured to receive the core sample; and a scriber operatively coupled to the sample container retainer and configured to mark a surface of the sample container.

Abstract: Embodiments disclosed herein relate to one or more embodiments and methods to make downhole measurements. Embodiments disclosed herein relate to one or more embodiments and methods to measure the movement generated by a coring tool. The methods and embodiments include disposing a coring tool in a wellbore, coupling a first wave detector to the coring tool, anchoring the coring tool to a formation surrounding the wellbore, operating the coring tool, measuring movement generated by the coring tool with the first wave detector, and outputting a signal based upon the measured movement measured with the first wave detector.

Abstract: A percussive driving apparatus for an environmental sampling or test device. The driving apparatus comprises a percussion stem (10), a weighted percussion plunger (20) having a longitudinal bore through which the percussion stem (10) is received, the percussion plunger (20) being slidable along a length of the percussion stem (10), a lift element (80) to permit lifting of the percussion plunger (20) along at least a portion of said length of the percussion stem (10), and a percussion pad (30) affixed to the percussion stem (10) at or near a first end thereof. The percussion pad (30) is configured to receive percussive driving force from the percussion plunger (20). The percussion tube (10) is also adapted at the first end to connect to a probe (40) (for example a shielded or unshielded piezometer, or a split spoon sampler, a seepage meter, long term data logging monitoring device, or seismic device) for environmental sampling and/or testing.

Abstract: A core orientation device (10) for a core drill (12). The device (10) comprises an arrangement (14) for providing signals (16) associated with a physical orientation (18) of the core orientation device (10). Processing means (22) are provided for processing the signals (16) so as to provide processed data (23) from which a measure (24) of the physical orientation (18) of the core orientation device (10) can be established. The measure (24) is associated with the physical orientation (18) of the device (10) at a particular moment in time. A memory (26) is coupled to the processing means 22 for storing the processed data 23. To this end there is provided an interface means (27) comprising first means (28) for storing the processed data (23) in the memory (26) and second means (30) for accessing the memory (26) to provide the measure (24) of the physical orientation (18) of core orientation device (10) when required.

Abstract: An apparatus and method obtains a sample from a subterranean formation. The coring apparatus includes an outer core barrel associated with a drill bit; an inner core barrel adapted to accept a core sample; and sensors adapted to provide data relating to downhole conditions. The sensors includes: a strain sensor adapted to measure tension and/or compression experienced by the inner core barrel; a first pressure sensor adapted to measure pressure out with the inner barrel and a second pressure sensor adapted to measure pressure within the inner barrel; a rotation sensor adapted to measure relative rotation between the inner core barrel and the outer core barrel; and a vibration sensor adapted to measure vibration experienced by the inner barrel.

Abstract: A core orientation head (12) comprises a substantially cylindrical body (28) having a first end (30) and an opposite end (34). A core face profile recording system (41) is carried by the body (28) to record a profile of the face of a core cut by a core drill in which the orientation head (12) is disposed. The system (41) comprises a plurality of pins (42) housed with an interference fit inside respective axially extending holes (38) provided in the body (28). A bearing scale (48) is marked on an outer circumferential surface 50 of the body (28). A cap (74) is demountably connectable to either of the ends (30) and (34). When connected to the end (30), the caps (74) protects the system (41). The caps (74) is also provided with a vernier scale (110) which, when the cap (74) is connected to the end (34), co-operates with the bearing scale (48) to facilitate marking of the core sample (46).

Abstract: A sidewall coring tool includes a tool housing, a coring assembly coupled and a marking device. The defines a longitudinal axis and is adapted for suspension within the borehole at a selected depth. The coring assembly is coupled to the tool housing and includes a bit housing and a coring bit coupled to the bit housing. The coring bit is supported for movement between a transport position and a coring position. The marking device is located at a known position with respect to the coring bit and is adapted to form an orientation mark in the formation.

Abstract: A core barrel capacity gauge for use on a core barrel assembly having a barrel for receiving a core sample. The core barrel capacity gauge includes a core sample marker located within the barrel such that the core sample marker rests against the top of the drilled core sample and a marker location sensor. The marker location sensor is arranged to detect the location of the core sample marker within the barrel.

Abstract: A core orientation device (10) for a core drill (12). The device (10) comprises an arrangement (14) for providing signals (16) associated with a physical orientation (18) of the core orientation device (10). Processing means (22) are provided for processing the signals (16) so as to provide processed data (23) from which a measure (24) of the physical orientation (18) of the core orientation device (10) can be established. The measure (24) is associated with the physical orientation (18) of the device (10) at a particular moment in time. A memory (26) is coupled to the processing means 22 for storing the processed data 23. To this end there is provided an interface means (27) comprising first means (28) for storing the processed data (23) in the memory (26) and second means (30) for accessing the memory (26) to provide the measure (24) of the physical orientation (18) of core orientation device (10) when required.

Abstract: A core orientation device (10) for a core drill (12). The device (10) includes an arrangement (14) for providing signals (16) associated with a physical orientation (18) of the core orientation device (10). Processing device (22) are provided for processing the signals (16) so as to provide processed data (23) from which a measure (24) of the physical orientation (18) of the core orientation device (10) can be established. The measure (24) is associated with the physical orientation (18) of the device (10) at a particular moment in time. A memory (26) is coupled to the processing device 22 for storing the processed data 23. To this end there is provided an interface means (27) including first means (28) for storing the processed data (23) in the memory (26) and second device (30) for accessing the memory (26) to provide the measure (24) of the physical orientation (18) of core orientation device (10) when required.

Abstract: A sidewall coring tool includes a tool housing, a coring assembly coupled and a marking device. The defines a longitudinal axis and is adapted for suspension within the borehole at a selected depth. The coring assembly is coupled to the tool housing and includes a bit housing and a coring bit coupled to the bit housing. The coring bit is supported for movement between a transport position and a coring position. The marking device is located at a known position with respect to the coring bit and is adapted to form an orientation mark in the formation.

Abstract: An apparatus made according to one embodiment may include a chamber configured to receive a core at a receiving end of the chamber and a cutting device configured to cut the core at a location distal from the receiving end of the core chamber. A method according to one aspect of the disclosure may include drilling into the formation to retrieve a core, receiving the core into a chamber at an open end of a chamber, and cutting the core uphole of the open end of the chamber so as to continue to receive the core into the chamber as the drilling continues.

Abstract: A core orientator, comprising a body (11) configured to be receivable in a bore hole and to be lowered into the bore hole, the body defining a space (17) which in use is intended to receive a liquid, the space supporting a reference member (23) 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 (29) 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.

Abstract: An apparatus is used with an impact hammer penetration assemble such as standard penetration test (SPT) in geotechnical engineering. The impact hammer penetration assembly comprises a penetration sample, a series of rods coupled together and an impact hammer apparatus. The drop of the hammer from a constant height hits the coupled rods and sampler in series and forces the sampler deeper into the ground. The apparatus includes a tip depth transducer and sampler to output a first electrical signal that is a function of the sampler tip position. A shock force transducer communicates the axial shock force in the rod to output a second electrical signal that is a function of the rod shock force and hammer blows. A shock penetration transducer communicates the movement of the coupled rods and sampler to output a third electrical signal that is a function of the sampler penetration due to the hammer blows. A micro-process controller monitors and processes the first, second and third signals in real time.

Abstract: Core orientator for a core drill includes a face orientator and a bottom orientator supported by a shaft which extends into a shroud. A tubular extension is coupled to the shroud and is slidably coupled to a main body. The main body includes first and second latches. The first latches releasably lock the device to a core lifter case assembly disposed within the core drill, to selectively prevent the device from advancing in an uphole direction within the core drill. The latching system operates to prevent the device from falling out of the core drill. Face orientator includes a plurality of pins which can move axially to provide a plurality of profile reference points to a facing surface of a hole to be drilled. The bottom orientator includes a plurality of balls disposed within respective braces.

Abstract: A system for driving a large diameter caisson into the ground, comprising a crane assembly, a plurality of vibratory devices, a clamp assembly, a suspension assembly, and a timing system. Each vibratory device generates a vibratory force. The clamp assembly rigidly secures each of the vibratory devices to one of a plurality of predetermined angularly spaced locations about the caisson. The suspension assembly connects the vibratory devices to the crane assembly such that transmission of vibratory forces from the vibratory devices to the crane assembly is inhibited. The timing system operatively connects the plurality of vibratory devices to synchronize the vibratory forces generated thereby.

Abstract: A device for preserving the orientation of a core is described. A core barrel is attached to a rotatable orienting rod. A plurality of projections are located on an inner surface of the core barrel. Three projections are grouped together and opposite from a fourth projection. A ratchet assembly is included at an end of the rotatable orienting rod opposite from the core barrel. The ratchet assembly includes a first body, to which the rotatable orienting rod is attached, a plate, a second body, and a biasing mechanism. A turning rod is mounted on the plate, which is located between the two bodies. The plate and the second body each have teeth which intermesh, but which slip if a clog in the core barrel inhibits rotation of the rotatable orienting rod.

Abstract: An upper end (10) for the inner tube of a core drill has a marking device comprising a pendulum (350) or hard ball (30) which runs in a circumferential track (24). The marking device adapted to be carried within a tubular upper end casing (12) which surrounds a spindle (11) which supports the inner tube of the drill. An indent washer (25) is positionable below the marking device and is oriented relative to the casing. When the upper end (10) is lifted, the marking device is driven into contact with the washer (25) and makes an impression. The orientation of the impression reveals the orientation of the drill. The impressioned washer (25) can be used to assist in noting or marking the core orientation after the drill is removed from the earth.

Abstract: Geological probing device comprising a hollow probing rod to be extended into the geological matter to be probed, and a measuring probe fitted to the probing rod, said measuring probe comprising sensors for obtaining information about the matter.

Abstract: A sample catcher comprises an inclined sampling screw conveyor which intercepts a continuous stream of drill cuttings from a shaker. A vaned metering rotor accepts a plurality of discrete samples from adjacent the conveyor's discharge. The vaned rotor is rotated at a lag rate proportional to the rate of penetration at the time the stream of cuttings with drilled. The plurality of discrete samples are discharged as a substantially continuous sample stream which is directed through a second conveyor to one or more analytical instruments. Further, the sample stream can be directed to a sample bag carousel which is index advanced for associating the bag contents with the drilling. The apparatus enables a method of analyzing cutting samples which correlate to the cuttings when drilled and in a process which is continuous.

Abstract: A survey device for use in a borehole formed in an earth formation. The device includes a carrier body carrying earth formation survey apparatus and drilling device arranged at the front end of the device for drilling of the borehole, a device for progressing the carrier body through the borehole in correspondence with progress of drilling by the drilling device and a device for removing the rock particles resulting from the drilling process. The device for removing the rock particles comprises a device for transporting the rock particles to the rear end of the device and depositing the rock particles into the borehole behind the rear end of the device.

Abstract: A core barrel having an inner tube for coring and, alternately, a center plug assembly for closing the throat of the core bit at the bottom of the assembly for drilling in lieu of coring. The inner tube assembly and plug assembly are disposable and retrievable through the drill string on a wireline using an overshot. The core bit is of a stabilized, preferably anti-whirl, design and may be a low-invasion core bit used in cooperation with a low-invasion coring shoe. A logging tool and data transmission assembly may be incorporated in the plug assembly for logging while drilling. Alternatively, sensors for logging borehole parameters and a data transmission assembly may be incorporated in the inner tube assembly, in the wall of the core barrel, above the core barrel, or in a combination of such locations.

Abstract: A coring apparatus permitting the taking of a non-rotating core sample and testing of same, as by NMR, prior to breakage and ejection from the apparatus. A core barrel is suspended from a rotating outer sleeve by one or more bearing assemblies which permit the core barrel to remain stationary during rotation of the sleeve with attached core bit for cutting the core. A core test device is fixed with respect to the core barrel on the outside thereof to test the core as it proceeds through the barrel. The apparatus optionally includes a directional detecting device such as an inclinometer and a compact set of circumferentially-spaced steering arms for changing the direction of the apparatus during coring.

Abstract: A tool for obtaining samples of the formation surrounding the wellbore, and method of obtaining such samples, is disclosed. The tool is implemented within a sub in a bottomhole assembly, preferably within side-pocket mandrels in the outer surface of drill collar pipe. The tool includes a series of sampling bits that may be fired into the surrounding formation by the activation of an explosive charge, and also includes an electronic unit for detecting a signal from the surface and activating the charge in response thereto. The signal may be communicated by way of mud-pulse telemetry, or by any other known telemetry technique. Separate groups of sampling bits, with separate switch and power units, may be provided to provide redundant operation; a decoder is included in this alternative, to allow for selection of one of the groups.

Abstract: A system for reliably indexing and separating sidewall core samples obtained with a sidewall coring tool comprises markers made of a magnetic material and a mechanism body made of a combination of magnetic and non-magnetic materials to reliably insert and position markers in between successive core samples. The sidewall core is not altered in any way by the marking process. Further, a flexible rubber boot apparatus is disclosed to ensure the complete transfer of retrieved samples in cases where the sample is broken, shattered or segmented and to ensure that broken, shattered or segmented cores will be retrieved in cases where the borehole is horizontal and the tool must operate in a horizontal position or in any other rotational orientation.

Abstract: A method and apparatus for determining the location in space of a formation sample is set forth. This involves a tool which is typically run on a wireline in a well, the tool supporting orthogonal positioned magnetometers and similar orthogonal accelerometers for measuring movement of the tool along the well borehole whereby components of the magnetic field and gravity field are measured to enable determination of the well in space. The tool supports an axially positioned centrally located core cutting apparatus and a laterally projecting plug cutting apparatus; scribe marks formed on the formation samples orient the samples relative to the tool and the tool is located in space from the above mentioned measurements so that the position of formation samples can be determined.

Abstract: A core drilling tool for drilling rock in underground soil formations which includes an outside pipe and an inside pipe therein that can be conveyed separately to the surface. The inside pipe includes a core-receiving receptacle at its lower end, and at its upper end is provided with a measurement unit for on-site acquisition, processing and storage of data, such as borehole, core and/or drilling process parameters.

Abstract: A core orientation device for determining the in situ orientation of core samples taken during a drilling process. A sampling tube having a plurality of equispaced slots formed longitudinally on its sidewall permits the scribing of a longitudinal line on a core sample within the sampling tube. The slots for indicating the position of the core within the sampling tube, a test tube with etch mark to indicate the top point or position of the etch mark within the test tube and a connector for relating the said top point on the test tube to the longitudinal slots on the sampling tube sidewall permit determination of the in situ position of the core sample.