WO2021181004A1 - Unité de forage - Google Patents

Unité de forage Download PDF

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Publication number
WO2021181004A1
WO2021181004A1 PCT/FI2021/050165 FI2021050165W WO2021181004A1 WO 2021181004 A1 WO2021181004 A1 WO 2021181004A1 FI 2021050165 W FI2021050165 W FI 2021050165W WO 2021181004 A1 WO2021181004 A1 WO 2021181004A1
Authority
WO
WIPO (PCT)
Prior art keywords
boom
support arm
drill pipe
drilling unit
drilling
Prior art date
Application number
PCT/FI2021/050165
Other languages
English (en)
Inventor
Simo KAUPPILA
Original Assignee
Oy Kati Ab Kalajoki
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oy Kati Ab Kalajoki filed Critical Oy Kati Ab Kalajoki
Priority to EP21718929.9A priority Critical patent/EP4118290A1/fr
Publication of WO2021181004A1 publication Critical patent/WO2021181004A1/fr
Priority to DKPA202270485A priority patent/DK202270485A1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • 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
    • E21B15/00—Supports for the drilling machine, e.g. derricks or masts
    • 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
    • E21B19/087—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods by means of a swinging arm

Definitions

  • a drilling unit comprising a drilling machine, the drilling machine having a frame, a boom attached to the frame pivotally about an axle, and a rotating unit for rotating a drill pipe, the rotating unit being attached to the boom so that it is movable in the longitudinal direction of the boom.
  • drill holes are drilled in the bedrock, and specimens sampled from the drill holes are used to assess the composition and ore concentrations of the bedrock.
  • Drilling is carried out with a drilling machine having a boom and a rotating unit moving parallel to the boom, by means of which drill pipes are drilled into the bedrock.
  • the drilling depth can be several hundred, even thousands of meters.
  • the individual drill pipes used in a drilling machine are typically 3-6 meters long. When drilling, it is thus necessary to connect the individual drill pipes into a drill string that reaches the desired drilling depth. At the end of the first drill pipe in the drill string there is a drill bit that must be replaced from time to time.
  • the entire drill string must normally be lifted up from the drill hole and disassembled into individual drill pipes. After replacing the drill bit, the drill string is lowered back into the drill hole. The time taken to connect and disconnect the drill pipes thus has a significant impact on the output of the drilling machine.
  • Drill pipe handling devices have been developed for the handling of drill pipes to facilitate and speed up the connection and disconnection of drill pipes.
  • Known drill pipe handling devices comprise an auxiliary guide attached in parallel with the drilling machine boom and a drill pipe gripper which moves along the auxiliary guide. The gripper grips the drill pipe on the side of the drilling machine and moves it within the reach of the rotating unit moving along the upper surface of the boom. Disconnecting the drill pipes from the drill string takes place in the reverse way.
  • Known drill pipe handling devices are suspended from the drilling machine boom, whereby their weight puts a strain on the boom.
  • the attachment of the handling devices to the side of the boom results in an eccentric load and causes a torsional stress on the boom and in particular on the attachment joint between the boom and the drilling machine.
  • Moving the drill pipe from the side of the boom along a curved trajectory over the top surface of the boom requires a complex transfer mechanism, which increases the weight and manufacturing cost of the handling equipment.
  • Known drill pipe handling devices also increase the overall width of the drilling unit consisting of the drilling machine and the drill pipe handling device. Often, the drilling machine is placed on the platform or frame of an off-road vehicle, whereby the space required by the drill pipe handling equipment on the side of the boom makes it difficult to operate the drilling machine and poses an occupational safety risk.
  • An object of the invention is to provide a drilling unit with which the disadvantages associated with the prior art can be reduced.
  • the objects of the invention are achieved by a drilling unit which is characterized by what is set out in the independent claim. Some preferred embodiments of the invention are set out in the dependent claims.
  • the invention relates to a drilling unit comprising a drilling machine, the drilling machine having a frame, a boom attached to the frame pivotally about an axle, and a rotating unit for rotating a drill pipe.
  • the rotating unit is attached to the boom so that it is movable in the longitudinal direction of the boom.
  • the rotating unit is below the boom or on the side of the boom when the boom is in an oblique drilling position.
  • the drilling machine boom can be in either a vertical or oblique position, depending on the drilling job.
  • the rotating unit is arranged on the boom so that when the boom is in an oblique drilling position, the rotating unit is below the boom or on the side of the boom, i.e. it moves along the lower surface of the boom or along the side surface of the boom.
  • a preferred embodiment of the drilling unit according to the invention further comprises a drill pipe handling device with an elongate support arm for supporting the drill pipe, the support arm being arranged to pivot about an imaginary axis of rotation along a trajectory in one plane.
  • the rotating unit is below the boom and the support arm is on the rotating unit side of the boom. The rotating unit is thus in the area between the boom and the support arm.
  • the drill pipe handling device is used to move drill pipes to the rotating unit and to remove drill pipes from the rotating unit.
  • the support arm supporting the drill pipes is on the same side of the boom as the rotating unit, the drill pipe supported by the support arm can move to the rotating unit along a trajectory in one plane.
  • the support arm is pivotally attached to an axle at its first end.
  • the support arm and boom thus rotate about the same axle.
  • the drill pipe supported on the support arm and the rotating unit supported on the boom can then be arranged to move in a plane.
  • the support arm has a head end and a tail end and the support arm is pivotable to a first position in which the tail end is substantially horizontal. Depending on the position of the boom, the support arm then forms either a right angle or an acute angle with the boom. Preferably, in a first position, the head end and tail end of the support arm are substantially parallel. The support arm is turned to the first position when drill pipes are being moved on the support arm from a drill pipe rack or storage.
  • the support arm can be brought into a second position in which the tail end is substantially parallel to the boom.
  • the imaginary central axis of the drill pipe supported by the support arm and the imaginary central axis of the drill pipe rotated by the rotating unit are parallel and aligned.
  • the head end and tail end of the support arm may be non parallel.
  • the head end of the support arm is attached at its second end rotatably around a pivot pin to the first end of the tail end, and the drilling unit has an actuator for turning the tail end relative to the head end and for turning the support arm about an axle.
  • said actuator is a hydraulic cylinder having a first end engaging the frame and a second end engaging the tail end of the support arm.
  • the drill pipe handling device has a rotating mechanism for rotating the drill pipe about its imaginary central axis.
  • the rotating mechanism is used to tightly screw the individual drill pipes onto the threads of the drill pipe at the end of the drill string.
  • said rotating mechanism comprises support rollers pressed against the outer surface of the drill pipe and a motor for rotating the support rollers.
  • said support arm has at least one guide on which the rotating mechanism is suspended movably in the longitudinal direction of the guide, and the drill pipe handling device has displacement means for moving the rotating mechanism in the direction of the guides.
  • the rotating mechanism can be made to move in the direction of the guides at a speed equaling the progress of the threads at the end of the drill pipe.
  • said displacement means comprises a threaded rod rotated by a motor in the rotating mechanism with an internally threaded sleeve attached to the support arm around the threaded rod.
  • the rotating mechanism comprises a transmission mechanism for transmitting the rotational movement of the support rollers to the threaded rod. The drill pipe supported by the support arm and the threaded rod included in the displacement means are thus rotated by the same motor.
  • said transmission mechanism comprises a first gear connected to the at least one support roller, a second gear arranged on the threaded rod, and a chain circling the first and second gears.
  • the ratio of the rotational speeds of the support roller and the threaded rod can be changed by changing the sizes of the gears.
  • the rotational speed of the threaded rod and thereby the speed of motion of the rotating mechanism can be adjusted to be equal to the rising speed of the threads at the end of the drill pipe.
  • the invention has the advantage that it facilitates and speeds up the transfer of drill pipes from storage to the rotating unit and from the rotating unit back to storage, thus improving the performance and efficiency of the drilling unit.
  • the invention has the advantage that it improves the occupational safety and ergonomics of the operators of the drilling unit and reduces their workload.
  • An advantage of one embodiment of the invention is that it is simple and light in construction, resulting in savings in material and manufacturing costs.
  • Another advantage of one embodiment of the invention is that the drill pipe handling equipment is separate from the drilling machine boom, whereby it does not strain and load the drilling machine boom.
  • the drilling machine fits in a significantly narrower space.
  • Fig. 1a shows, by way of example, a side view of a drilling unit according to the invention
  • Fig. 1 b shows a top view of the drilling unit shown in Fig. 1 a
  • Figs. 2a and 2b show a part of the drilling unit shown in Figs. 1a and 1b in a cross- sectional view
  • Figs. 3a-3c show a side view of the drilling unit shown in Figs. 1a and 1b with the drill pipe handling device belonging to the drilling unit in different positions.
  • Fig. 1a shows, by way of example, a drilling unit according to the invention seen from the side
  • Fig. 1b shows the same drilling unit seen from above. In the following, both images are described simultaneously.
  • the drilling unit has a frame 10 formed of metal pipe profiles with a vertical portion 10a and a horizontal portion 10b.
  • the vertical portion is substantially at right angles to the horizontal portion.
  • At the base of the vertical portion of the frame there are plate-like metal brackets 11 through which an axle 12 transverse to the direction of the vertical portion passes.
  • a boom 14 having an upper surface 15 on the vertical portion side and a lower surface 17 on the opposite side thereof.
  • the opposite side surfaces of the boom have rails 13 in the longitudinal direction of the boom.
  • the boom is secured at its first end to the axle 12 so that the boom can rotate about the axle 12 to the vertical position shown in Fig. 1 or from the vertical position to a clockwise inclined position (Fig. 3c).
  • the boom can be in the vertical or in the inclined position.
  • the boom can be swinged around the axle to a transport position in the direction of the horizontal portion of the frame. In the transport position, the boom is at an angle of approximately 25 degrees to the horizontal.
  • a slide carriage 19 Attached to the frame, there is a slide carriage 19 on which the rotating unit 16 of the drill pipes 18 is supported.
  • the slide carriage is supported on the rails 13 on the side surfaces of the boom so that the slide carriage and the rotating unit supported thereon can move parallel to the boom 14 along the lower surface of the boom from a first end of the boom to a second end of the boom.
  • a support 20 At the first end of the boom there is a support 20 on which a pipe holder 22 is attached.
  • the pipe holder has a hole for the passage of the drill pipe 18.
  • At the second end of the boom there is a pulley 23 around which a cable 25 unwinding from the spool of a hydraulic winch 27 is wound. The cable allows the rock sample to be lifted up from the drill hole.
  • a hydraulic pump 29 On the other side of the vertical portion of the frame is a hydraulic pump 29, which produces the hydraulic fluid pressure required by the hydraulically operated equipment of the drilling unit.
  • the hydraulic pump is connected by hydraulic hoses to the hydraulically operated equipment of the drilling unit. For clarity, the hydraulic hoses are not shown in the figure.
  • a control panel 53 In connection with the hydraulic pump, there is a control panel 53 for controlling the operation of the drilling machine.
  • the drilling unit includes a drill pipe handling device, by means of which the drill pipes are moved within reach of the rotating unit to be connected to the end of the uppermost drill pipe of the drill string to be drilled in the bedrock. Similarly, the drill pipes to be detached from the drill string lifted from the drill hole are moved away from the vicinity of the rotating equipment by the drill pipe handling device.
  • the drill pipe handling device has an elongate support arm 24 with a head end 26 and a tail end 28.
  • the support arm is attached at its first end, i.e. the first end of the head end 26, to the axle 12.
  • the head end branches into two parts so that the first branch of the head end engages the first end of the axle on the first side of the boom 14, and the second branch of the head end engages the second end of the axle on the second side of the boom.
  • the second end of the head end is secured by a pivot pin 30 to the first end of the tail end 28 so that the tail end can rotate about the pivot pin.
  • At the second end of the head end there is a limiter 31 which sets an upper limit for the counterclockwise rotation of the tail end around the pivot pin.
  • the horizontal portion of the frame has a support post 57 that supports the tail end of the support arm and prevents the support arm from rotating clockwise beyond the substantially horizontal first position shown in the figure.
  • the hydraulic cylinder 35 At the first end of the tail end 28, there is a plate-like projection 33, to the tip of which is connected the first end of the hydraulic cylinder 35.
  • the second end of the hydraulic cylinder is connected to the vertical portion 10a of the frame so that with the tail end 28 in the first position parallel to the head end according to Fig. 1a, the hydraulic cylinder is in the extended position parallel to the head end above the support arm.
  • the hydraulic cylinder is connected to the hydraulic pump 29 by hydraulic hoses (not shown).
  • a drill pipe rotating mechanism comprising a first end support 46a and a second end support 46b connected to each other by support rods 37.
  • Fig. 1a shows only one support rod, but there may be several.
  • Above and below the tail end of the support arm there is a guide 32 in the direction of the tail end of the support arm. The guides are attached to the first end of the tail end 28 of the support arm by means of first end plates 47a, and to the second end of the tail end 28 by means of second end plates 47b.
  • the first and second end supports and any intermediate supports are slidably attached to the guides so that the rotating mechanism can move on the guides parallel to them.
  • the mechanism has a threaded rod 34 attached rotatably about the longitudinal axis at its first end to the first end support and at its second end to the second end support. Between the first and second ends of the threaded rod there is an internally threaded sleeve 50 fixedly attached to the side of the tail end of the support arm.
  • the threaded rod passes through the internally threaded sleeve so that rotation of the threaded rod causes the rotating mechanism to move along the guides towards the first end or the second end of the tail end of the support arm.
  • the rotating mechanism further includes displacement rollers 52 which, when rotated, cause the drill pipe to move in the longitudinal direction of the support arm.
  • the drilling unit further includes a hydraulic cylinder for changing the position of the boom, a generator for generating electric power, a motor for generating the driving force of the hydraulic pump and generator, a drilling fluid pump and drilling fluid recirculation means.
  • a hydraulic cylinder for changing the position of the boom
  • a generator for generating electric power
  • a motor for generating the driving force of the hydraulic pump and generator
  • a drilling fluid pump and drilling fluid recirculation means are known devices commonly used in drilling units, and are not shown in the figure.
  • Figs. 2a and 2b show a part of the drilling unit shown in Figs. 1a and 1b in a cross- sectional view in the section plane A-A.
  • the figures show the second end support 46a of the rotating mechanism belonging to the drill pipe handling device. In the following, both images are described simultaneously.
  • the second end support 46b has two parallel support plates 54 with a gap therebetween. There is a recess at the edge of the support plates, providing a space for the tail end 28 of the support arm. Between the edges of the recess and the walls of the support arm is a clearance, i.e. the wall of the support arm does not come into contact with the edge of the recess.
  • the support plates have aligning upper holes above the tail end of the support arm and lower holes below the tail end.
  • the guides 32 are arranged to pass through the upper and lower holes so that the upper and lower holes act as slide fastening members by means of which the second end support rests on the guides.
  • the gap between the support plates has two support rollers 36 through which a shaft pin 39 passes.
  • the shaft pins rest on the first support plate at their first end and on the second support plate at their second end.
  • the drill pipe 18 is rested on these two parallel support rollers, between the support rollers.
  • Above the drill pipe is a press roller 38 which is attached to the end of a pivot arm 56 through a cylinder 55.
  • the arm is turned to a first position, whereby the press roller is pressed against the wall of the drill pipe.
  • a hydraulically operated motor (not shown), by means of which the first support roller and the drill pipe in contact with it are made to rotate about their central axis.
  • Fig. 2b the arm has been turned to a second position, whereby the press roller has risen up a distance along the surface of the drill pipe. The drill pipe then rests freely on the support rollers.
  • first gear 40 At the end of the shaft pin 39 of the second support roller there is a first gear 40 and at the end of the threaded rod 34 extending through the support plate there is a second gear 42.
  • a chain 44 encircles the first and second gears so that rotation of the support roller causes the threaded rod to rotate about a central axis, whereby the entire rotating mechanism moves on the guides 32 and parallel to the guides.
  • the second support roller is made to rotate by rotating the drill pipe with the first support roller 36, whereby the rotational movement of the drill pipe causes the second support roller to rotate.
  • the first and second gears and the chain together form a transmission mechanism by means of which the rotational movement of the second support roller is transmitted to the threaded rod 34.
  • the rotational movement of the threaded rod is thus produced by the motor rotating the first support roller.
  • the size of the first and second gears is selected to be such that, during one revolution of the drill pipe, the rotating mechanism moves by a distance equaling the thread pitch of the drill pipe.
  • the gears are removably fastened in place, so that whenever the diameter of the drill pipe and the type of thread change, the gears can be changed to adjust the speed of rotation of the threaded rod.
  • Figs. 2a and 2b show the second end support 46b of the rotating mechanism.
  • the first end support is similar in structure to the second end support, except that the first end support does not have a transmission mechanism for transmitting the rotational movement of the rotating rollers to the threaded rod. If there are intermediate supports between the first and second end supports, they are substantially similar in structure to the first end support.
  • Figs. 3a and 3b show a side view of the drilling unit shown in Fig. 1a.
  • the figures illustrate the operation of the drill pipe handling device included in the drilling unit. In the following, both images are described simultaneously.
  • the rotating unit 16 As the drill string rotated by the rotating unit 16 is drilled into the bedrock, the rotating unit moves along the boom 14 towards the pipe holder 22. At the same time, the upper end of the drill string moves downward. During drilling, a drill pipe 18 is moved onto the support arm of the drill string handling device. The drill pipe can be moved to the handling device by hand or using an automatic manipulator.
  • the drill pipe supported on the drill pipe handling device is added to the drill string and attached to the upper end of the uppermost drill pipe in the drill string. This is carried out by shortening the length of the hydraulic cylinder 35, whereby the tail end 28 of the support arm 24 rotates around the pivot pin 30 against the limiter 31 to the intermediate position shown in Fig. 3a. In the intermediate position, the tail end of the support arm forms an obtuse angle with the head end 26 of the support arm.
  • the entire support arm begins to rotate about the axle 12.
  • the limiter prevents the angle between the head end 26 and tail end 28 of the support arm from changing as the support arm in its entirety rotates around the axle 12.
  • the hydraulic cylinder is shortened until the support arm rotates to the second position shown in Fig. 3b, where the tail end 28 of the support arm is substantially parallel to the boom 14. In the second position, the imaginary center line of the drill pipe 18 supported by the rotating mechanism attached to the support arm is parallel and aligned with the center line of the uppermost drill pipe in the drill string passing through the rotating unit 16.
  • the drill pipe supported by the support arm is connected to the end of the uppermost drill pipe in the drill string by rotating the drill pipe with the rotating mechanism, whereby the rotating mechanism and the drill pipe supported by it move towards the upper end of the drill string.
  • the drill pipe hits the end of the drill string, it becomes attached to the threads of the uppermost drill pipe in the drill string.
  • drilling is temporarily suspended during the connection of the new drill pipe.
  • the support arm is first returned to the intermediate position of Fig. 3a by extending the hydraulic cylinder and further to the first position of Fig. 1a where it is ready to receive the next drill pipe.
  • Fig. 3c shows, by way of example, a drilling unit according to the invention seen from the side.
  • the drilling unit shown in the figure is similar to the drilling unit shown in Figs. 1a, 3a and 3b.
  • the drilling machine of the drilling unit can drill drill pipes 18 into the bedrock in either a vertical or oblique position.
  • the boom 14 of the drilling machine is placed at a desired angle to the vertical line and drilling is performed as described above.
  • the boom of the drilling machine shown in Fig. 3c is clearly in an oblique position.
  • the feeding of the drill pipes to the rotating unit 16 moving along the boom in an oblique position takes place in the same way as described above.
  • the oblique position of the boom does not in any way hamper the operation of the drill pipe handling device, and the oblique position of the boom does not have to be specially taken into account when operating the handling device. Since the support arm 24 of the drill pipe handling device and the boom rotate about the same axle 12, the tail end 28 of the support arm in the second position is always in a position parallel to the boom, regardless of the angle of inclination of the boom.
  • the drilling machine shown in the figures has a frame comprising a vertical portion and a horizontal portion.
  • the drilling unit can be mounted on a vehicle body or platform, in which case it does not necessarily need to have a horizontal portion of the frame.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Abstract

Une unité de forage comprend une machine de forage ayant un cadre, une flèche (14) fixée pivotante au cadre autour d'un axe (12), et une unité rotative (16) permettant de faire tourner une tige de forage (18). L'unité rotative est fixée à la flèche de telle sorte qu'elle est mobile dans la direction longitudinale de la flèche. L'unité rotative se trouve sous la flèche ou sur le côté de la flèche lorsque la flèche est dans une position de forage oblique. L'unité de forage peut en outre comprendre un dispositif de manipulation de tige de forage ayant un bras de support allongé (24) pour supporter une tige de forage, le bras de support étant conçu pour pivoter autour d'un axe de rotation imaginaire le long d'une trajectoire dans un plan. Le dispositif de manipulation de tige de forage est utilisé pour déplacer des tiges de forage vers l'unité rotative et pour retirer les tiges de forage de l'unité rotative.
PCT/FI2021/050165 2020-03-12 2021-03-05 Unité de forage WO2021181004A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21718929.9A EP4118290A1 (fr) 2020-03-12 2021-03-05 Unité de forage
DKPA202270485A DK202270485A1 (en) 2020-03-12 2022-10-05 Drilling unit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20205259 2020-03-12
FI20205259A FI130964B1 (fi) 2020-03-12 2020-03-12 Kairausyksikkö

Publications (1)

Publication Number Publication Date
WO2021181004A1 true WO2021181004A1 (fr) 2021-09-16

Family

ID=75530059

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2021/050165 WO2021181004A1 (fr) 2020-03-12 2021-03-05 Unité de forage

Country Status (4)

Country Link
EP (1) EP4118290A1 (fr)
DK (1) DK202270485A1 (fr)
FI (1) FI130964B1 (fr)
WO (1) WO2021181004A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3734208A (en) * 1971-08-19 1973-05-22 Bucyrus Erie Co Well drill transfer mechanism
US3986619A (en) * 1975-06-11 1976-10-19 Lee C. Moore Corporation Pipe handling apparatus for oil well drilling derrick
US4061233A (en) * 1975-07-04 1977-12-06 Joseph Reginald Benjamin Drilling rigs
WO2011120627A2 (fr) * 2010-04-01 2011-10-06 Herrenknecht Vertical Gmbh Procédé et dispositif pour l'acheminement et l'évacuation de trains de tiges vers un dispositif de forage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3734208A (en) * 1971-08-19 1973-05-22 Bucyrus Erie Co Well drill transfer mechanism
US3986619A (en) * 1975-06-11 1976-10-19 Lee C. Moore Corporation Pipe handling apparatus for oil well drilling derrick
US4061233A (en) * 1975-07-04 1977-12-06 Joseph Reginald Benjamin Drilling rigs
WO2011120627A2 (fr) * 2010-04-01 2011-10-06 Herrenknecht Vertical Gmbh Procédé et dispositif pour l'acheminement et l'évacuation de trains de tiges vers un dispositif de forage

Also Published As

Publication number Publication date
FI20205259A1 (fi) 2021-09-13
EP4118290A1 (fr) 2023-01-18
DK202270485A1 (en) 2022-10-12
FI130964B1 (fi) 2024-06-19

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