EP3198105A1 - Mobile drilling rig - Google Patents
Mobile drilling rigInfo
- Publication number
- EP3198105A1 EP3198105A1 EP15843585.9A EP15843585A EP3198105A1 EP 3198105 A1 EP3198105 A1 EP 3198105A1 EP 15843585 A EP15843585 A EP 15843585A EP 3198105 A1 EP3198105 A1 EP 3198105A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mast
- main frame
- drilling rig
- drill head
- pivot support
- 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.)
- Withdrawn
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterized by means for land transport with their own drive, e.g. skid mounting or wheel mounting
- E21B7/023—Drilling rigs characterized by means for land transport with their own drive, e.g. skid mounting or wheel mounting the mast being foldable or telescopically retractable
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterized by means for land transport with their own drive, e.g. skid mounting or wheel mounting
- E21B7/024—Drilling rigs characterized by means for land transport with their own drive, e.g. skid mounting or wheel mounting having means for adapting to inclined terrain; having means for stabilizing the vehicle while drilling
Definitions
- the present application concerns drilling rigs for boring holes into the ground and more particularly mobile rigs which can traverse the land to sites where holes are to be bored into the ground for various purposes, i.e. to create oil or water wells, for obtaining core samples, etc.
- Such mobile drilling rigs are known but are not well suited to traverse many off road conditions and to safely negotiate rugged terrain with areas of steep grades.
- Such rigs are typically limited in the depths of drilling possible since the drilling apparatus is not adequately stabilized to allow deep wells to be drilled and the vertical reaction forces become quite substantial when deep holes are attempted to be drilled.
- Still another object is to provide a mobile drilling rig which has a retractable seat for an operator which allows good visibility of the components during drilling and movement of the rig between locations where drilling operations are to be conducted.
- a drive chassis which may be supported and driven by various types of running gear, including wheels, a recirculating track or a snow drive, supports a main frame resting on top of the drive chassis and quickly attached or detached therefrom since only a few fasteners need be removed or installed.
- the main frame is made of elongated members fixed together, which may form an X shape, each member having telescoped extensions at one end thereof enabling extending the elongated members for increasing the stability of the main frame.
- a vertical support is mounted to an end of each telescoped extension which vertical supports also being extendible to raise or lower the main frame above the ground and the drive chassis.
- An elongated mast supporting a drill head is mounted to one end of the main frame on a mast pivot support which allows the mast to be swung from a horizontal position extending back over the main frame, to a vertical drilling position at a location just forward of the main frame.
- the mast is also movable on the mast support up and down when vertically oriented or forward and back when in the stowed horizontal position.
- the drill head is movable along the length of the mast, preferably by a power cylinder and mechanical movement arrangement which speeds the movement thereof relative to the motion of the power cylinder.
- the slide chassis supports a power plant comprised of engine and one or more hydraulic pumps, a fuel tank, a reservoir for hydraulic fluid and other components necessary for powering the various actuators which are hydraulically operated, as well as for propelling of the drive chassis supported on running gear, such as by wheels, a recirculating track or a snow drive.
- a power plant comprised of engine and one or more hydraulic pumps, a fuel tank, a reservoir for hydraulic fluid and other components necessary for powering the various actuators which are hydraulically operated, as well as for propelling of the drive chassis supported on running gear, such as by wheels, a recirculating track or a snow drive.
- a self-powered flat bed truck may optionally be used as the drive chassis in which case the power plant is not used to propel the rig but only to operate the various actuators and drill motor
- the slide chassis is movable on a pair of rails attached to the main frame at the other end thereof from the mast support to be positioned at a variable distance from the other end of the main frame.
- the sliding motion of the power plant is useful to facilitate maintenance and/or replacement of the engine and other power plant components, as well as to increase the stability of the rig when being transported as described below.
- the main frame may be transported on a wheeled or tracked drive chassis.
- the drill head is powered to be movable in an up and down direction on the mast (and forward and back when the mast is stowed in the horizontal position) by a mechanical movement operated by a double acting power cylinder which has pairs of sprockets on either end thereof, each sprocket in each pair engaged with a respective chain loop passing around a respective set of sprockets.
- a through cylinder rod of the power cylinder actuator is fixed at either end to the mast.
- the sprockets advance the chain loops a distance substantially greater than the distance of the stroke of the cylinder.
- the drill head is attached to one segment of each of the chain loops and moves together with those chain segments on guide surfaces on the mast. Another segment of each chain loop is anchored to the mast.
- the back and forth horizontal movements of the power plant, the mast and the drill head on the mast can be carried out as an aid in maintaining stability when the rig is being driven over up or down sloping terrain by operating the associated actuators.
- Any shifting of a center of gravity of the mobile rig caused by being on an up or down grade may also be sensed and the mast/drill head/power plant then shifted horizontally automatically so that any shifting of the center of gravity of the rig is offset by actuating the various associated power cylinders so as to shift the location of these components in the appropriate direction.
- An operator's seat can be mounted to the rig, swung out from one side of the main frame and shifted forwardly when the rig is going to be operated to allow the operator to operate the various actuators.
- FIG. 1 is a pictorial view of a mobile drilling rig according to the present invention, shown without a cover normally installed over the power plant.
- Figure 1A is a side elevational view of the mobile drilling shown in Figure 1.
- Figure 2 is a bottom view of the mobile drilling rig shown in Figures 1 and 1A.
- Figure 3 is a pictorial view of a drive chassis included in the mobile drilling rig as shown in Figures 1 and 1A which is powered by the power plant.
- Figure 3A is a pictorial view of a drive chassis of the mobile drilling rig showing the drive chassis frame without cover plates normally installed thereon for clarity.
- Figure 4 is a top view of the drive chassis included in the mobile drilling rig shown in Figure 1.
- Figure 5 is a pictorial view of the main frame included in the mobile drilling rig shown in Figure 1.
- Figure 6 is a reduced size top view of the main frame shown in Figure 5 with the structural support members for an operator seat depicted in a retracted state.
- Figure 7 is a top view of the main frame as shown in Figure 6 but with the operator seat structural support members for an operator seat swung out and extended.
- Figure 8 is a reduced size pictorial view of the main frame shown in Figure 5 without the operator seat structural support members, with both the vertical end supports and horizontal extensions in retracted positions.
- Figure 9 is a pictorial view of the main frame as shown in Figure 8 with the vertical end supports fully extended.
- Figure 10 is a plan view of the main frame with the horizontal extensions fully moved out.
- Figure 11 is a pictorial top view of a slide chassis mounted to the main frame fully extended therefrom with supported thereon components removed for clarity.
- Figure 12 is a fragmentary top view of a slide chassis fully extended from the main frame.
- Figure 13 is a side elevational view of a slide chassis fully extended from the main frame with all of the major components shown in place and a hydraulic hose guide rack shown in phantom lines.
- Figure 14 is a fragmentary top view of the slide chassis fully extended from the main frame and the supported components omitted in Figure 11 shown in place.
- Figure 14A is a pictorial view of the slide chassis shown in a fully retracted position on the main frame.
- Figure 14B is a top view of the slide chassis in the fully retracted position on the main frame.
- Figure 15 is an enlarged fragmentary partially sectional view of the mating rail components for the slide chassis.
- Figure 16 is a front view of the mast pivot support included in the drilling rig of Figure 1.
- Figure 16A is an enlarged pictorial view from the front of the mast pivot support shown in Figure 16.
- Figure 17 is a view of the section A- A in Figure 16.
- Figure 18 is a reduced top view of the mast pivot support with the mast in place thereon in a vertical orientation.
- Figure 19 is an end rear view of the back plate of the mast pivot support with the antifriction coverings installed thereon.
- Figure 20 is a front view of the pivot support and mast.
- Figure 21 is a side view of the pivot support and mast as shown in Figure 20.
- Figure 22 is a front view of the pivot support and mast as shown in Figure 20 with the mast tilted to the left.
- Figure 23 is a side view of the pivot support and mast as shown in Figure.
- Figure 24 is a reduced size fragmentary pictorial view of a portion of the slide chassis and main frame with the mast and pivot support shown in the fully tilted right position.
- Figure 25 is a reduced size side view of the slide chassis and main frame with the mast in a horizontal position thereon.
- Figure 26 is a fragmentary depiction of the main frame with the pivot support and mast in a vertical position thereon.
- Figure 27 is a fragmentary depiction of the main frame with the mast and pivot support in the past vertical tipped position.
- Figure 28 is a pictorial rear view of the mast pivot support, mast and drill head with the mast elevated on the mast pivot support.
- Figure 29 is a pictorial rear view of the mast pivot support, mast and drill head with the mast in a lowered position on the pivot support.
- Figure 30 is a top view of the mast pivot support, the mast, and the drill head.
- Figure 31 is a pictorial diagrammatic view of the drill head drive arrangement for achieving increased movement of the drill head on the mast with the mast in a horizontal orientation.
- Figure 32 is an enlarged diagrammatic representation of the drill head and mast depicting the drive arrangement shown in Figure 31.
- Figure 33 is a diagrammatic representation of a mobile drill rig according to the invention descending a grade with movable components shifted to increase the stability of the rig when descending a grade.
- Figure 34 is a diagrammatic representation of the rig shown in Figure 32 ascending a grade with movable components positioned to increase the stability of the rig when negotiating a grade in an uphill direction.
- Figure 35 is a pictorial view of an operator seat and industrial controller with a block diagram depiction of control valving for operating the various actuators and a controller handle for operating the drive components of the mobile drilling rig, and an optional remote control.
- Figure 36 is a side elevational view of a rig showing the use of a conventional flat bed truck as a drive chassis.
- Figure 37 is a side elevational view of a drilling rig showing use of a tracked drive chassis.
- Figure 38 is a bottom view of the drilling rig using tracked drive chassis shown in Figure
- the mobile drilling rig 10 is comprised of four main assemblies which are easily separable from each other for maintenance and servicing or to replace any of these assemblies which requires servicing or with a differently configured version thereof.
- These assemblies include a drive chassis 12 of a type which is powered by the power plant 16 described below, which is a steel frame 13 mounting running gear having elements thereof resting on the ground or pavement, here shown as a wheeled drive chassis including four multiple double wheel sets 15 A, 15B.
- the number of wheels in each set is shown as two but may be varied by the insert arrangement shown in the parent U.S. patent application serial no. 14/702,853 filed on May 4, 2015, referenced above.
- the drive chassis 12 supports a main frame 14 which is generally configured by crossing members 25 defining a generally X shaped configuration ( Figure 5) and attached to the drive chassis 12 as by eight threaded fasteners (not shown) received in holes in attachment plates 40 ( Figure 4).
- a slide chassis 16 Supported on the left end of the main frame 14 is a slide chassis 16 which in turn mounts a power plant 18 which preferably includes a diesel engine 17 driving one or more hydraulic pumps 19 which provide a source of hydraulic pressure, a fuel tank 52 and hydraulic fluid reservoir 54 ( Figure 1A).
- the hydraulic power is used for driving the wheels and operating the other hydraulic equipment, mainly the many actuators described herein.
- the hydraulic lines, not shown, may be routed through a track T shown in broken lines generally rectangular in section to guide the lines when the slide chassis is shifted.
- an elongated mast 20 carrying a drill head 22 movable along the length of the mast 20 when the mast 20 is positioned vertically as seen in the Figures 1-3 or horizontally (Figure 25).
- the mast 20 is pivotally mounted on a mast pivotal support 21 pivotally connected to a pair of short upright beams 21A fixed on one end of the main frame 14.
- the drill head 22 has one or more drill motors 24, each driving a drill (not shown) which is advanced down on the mast 20 as drilling of each bore section proceeds.
- the drive chassis 12 includes a conventional transfer case 26 and hydraulic motor assembly 28 supported beneath the frame 13 which could be comprised of multiple pumps.
- Conventional front and rear differentials 30, 32 are driven by drive shafts 34, 36 respectively extending from either side of the transfer case 28 ( Figure 2).
- Aligned pairs of the wheel sets 15 A, 15B are driven by the respective conventional differentials 30, 32.
- Front differential 30 and associated axles and wheel sets are supported on a subframe 38 ( Figures 3 and 3 A) able to pivot on one end of the frame 13 by means of a pivot connection 48 thereto.
- the front wheel sets 15B are steerable by conventional steering linkages 50 operated by a power cylinder 44 and gear racks 46 and tie bars 47.
- Braking is preferably carried out by an internal circuit in the hydraulic motor (not shown) although conventional friction braking by hydraulic actuators could also be employed (not shown).
- mounting plates 40 are attached to the top of the frame 13 with fasteners (not shown) received in pairs of holes 57 in each plate 40 fixing the main frame 14 in position atop plates 56 covering the frame 13 of the drive chassis 12 ( Figure 4).
- the sets of tires 15A, 15B are attached to hubs 58 as described in the parent application referenced above.
- main frame 14 which include the elongated members 25 which are welded together in a general X form, crossing at the center.
- Connecting beams 60, 62 reinforce the right end and support a pair of upright posts 21A that hold the mast pivot support 21 for the mast 20.
- Bearing plates 64 having holes 65 at the top of upright posts 21A are provided for a generally U shaped structure 66 included in the mast pivot support 21 as further described hereinafter.
- Bearing blocks 68 are fixed to cross beam 60 for mounting a large power cylinder 70 (Figure 1) used to pivot the structure 66 as described below.
- Each member 25 has an extension 72 telescoped therein at its outer end connected to a hydraulic double acting actuator cylinder 74 output rod 76 which can be selectively activated to move the extension 72 outwardly to increase the effective length of the members 25 for increased stability to resist reactions to the drilling operations as necessary as shown in Figure 10.
- Each extension 72 has an adjustable height stanchion mounted thereto, comprised of a vertically mounted power cylinder 78 with a foot plate 80 attached to an output rod 82 to allow tilting to securely rest on the ground.
- the rods 82 can be extended vertically to selectively raise the main frame 14 when drilling or to replace or service the drive chassis 12 as with a track drive.
- Hydraulic hose guide tracks 85 can be provided to control movement of the hydraulic hoses (not shown) as the extensions 72 move in and out in the well known manner, with track holder pieces 86, 87affixed to members 74 and extensions 72 respectively for that purpose.
- the main frame 14 also includes a seat swing out linkage 88 on one member 25 operated by a power cylinder 90 and slide 92 which swings a seat support structure 94 outwardly and forwardly as seen in Figures 6 and 7. This portions an operator to have good vision of the movable components including driving of the rig and drilling operations.
- Figures 11-15 show details of the mounting and movement of the slide chassis 16 atop the main frame 14.
- a pair of parallel slide channels 96 are affixed to main frame members 25 and slidably receive a pair of slide chassis members 98 with interposed antifriction layers 100 around box beams 102 and channels 96.
- An array of cross pieces 104, 106, 108 fixed extending between members 98 provide support for the power plant 18, the fuel tank 52 and 54.
- a large hydraulic cylinder 110 extends lengthwise above the main frame 14, the cylinder body 112 fixed at the end thereof to the main frame 14, with an output rod 114 connected to the chassis 16. This enables the sliding chassis 16 to be pushed to the extended position shown in Figures 11-14 (or to be removed entirely) or moved to a fully retracted position shown in Figures 14A, 14B.
- this shifting action is used to increase the stability of the rig when going up or down grades as will be described in further detail below.
- the mast pivot support structure 66 including a pair of plates 63 welded to a pivot connector plate 65 is secured to the main frame 14, pivotally connected to the upright members 21 A at one end of the main frame 14 ( Figure 1).
- the power cylinder 70 output rod 71 ( Figure 1) has the ends of a connector shaft 73 received in respective tubular holders 118 to allow pivoting of the pivot support structure 66 when the power cylinder 70 is actuated as illustrated in Figures 24-27 to swing the mast 20 from a vertical (or slightly past vertical) portion to a horizontal position extending back over the main frame 14 and slide chassis 16.
- the plates 63 and pivot 65 affixed thereto cannot rotate since mounted to the frame members 21 by a connection allowing pivoting to the front or rear but preventing motion to the sides thereof as viewed in Figure 16.
- the plate 65 has a hole formed therein which allows a rotary cylinder 120 affixed to a pivot back plate 122 to protrude into the space between the side plates 63.
- the rotary cylinder 120 allows the pivot back plate 122 to rotate to either side on plate 65.
- An outer tube 120 A fixed to plate 65 and end cap 120B encloses the rotary tube 120.
- a pair of radiused cover pieces 124A, 124B are affixed to pivot back plate 122 extend over upper and lower edges of the connector plate 65.
- a pair of power cylinders 126 each have an output rod 128 connected at its upper end to a respective side of the fixed connector plate 65 with a pivot 130.
- each cylinder body 131 is attached to a respective side of the pivot plate 122 by mounting extension plates 132 and pivots 134.
- the pivot back plate 122 has a pair of square sheets 136 made of a friction reducing material fixed to the backside thereof, with a pair of mast retention plates 138 attached over the spacers 136. This creates a pair of spaces 137 for slidably receiving the ends of a mast back plate 142.
- a flat spacer sheet 140 of friction reducing material is interposed between the mast back plate 142 and the pivot back plate 122.
- the mast 20 is slidably mounted to the pivot support 21 enabling guided vertical or horizontal movement of the mast 20 depending on the orientation of the mast 20 about its pivot axis. At the same time this makes the mast 20 rotate with the pivot back plate 122, enabling limited tipping of the mast 20 sideways in either direction.
- a pair of long power cylinders 144 best seen in Figures 20 and 22 but also in Figures 21, 28 and 29 have an output rod 146 attached to a cross bar 148 affixed to the mast 20 and a body 150 attached by a pivot support 152 ( Figures 21 and 23) to the mast pivot support 21 to slide the mast 20 up or down (or back and forth) relative to the mast pivot support 21.
- the double acting power cylinders 126A, 126B are oppositely actuated as seen in Figure 22 to enable tilting of the mast in either direction sideways to the left shown in Figure 22.
- the mast 20 can be positioned in either a horizontal or vertical orientation while having an ability to be moved in a lengthwise direction either horizontally or vertically.
- the mast 20 may be tipped past vertical to a limited extent, as seen in Figure 27.
- Figures 28-32 show details of the mounting of the drill head 22 on the mast 20 which allows advancing and retracting movement thereof along the length of the mast 20.
- a mechanical movement is included to enable advance of the drill head 22 at a rate of speed double that of the actuator motion.
- a double acting power cylinder 152 is mounted within the mast 20 and has an output rod 154 protruding from either end of the cylinder body 156, each end anchored to an end wall 158 of the mast 20.
- the cylinder body 156 is moved lengthwise within the mast 20 in either direction by proper application of hydraulic pressure to the double acting cylinder 152 in the well known manner.
- a pair of rotatable sprockets 160 are mounted rotatable about a common axis normal to the direction of movement of the cylinder body 56.
- a respective chain loop 162A, 162B extends around each sprocket in positive driving engagement therewith so that there are two segments 168 A, 168B of each chain loop extending between each of the respective engaged sprockets.
- the triple drill head 22 details do not form a part of the present invention and are here described to illustrate that the drilling rig 10 of the invention is useable not only with a single head but also with various types of drill designs and drill holders and drivers.
- a base plate 164 may be provided mounting together the components of the drill head 22 and riding along the side of the mast 20.
- a pair of I beam guide members 166 A, 166B are affixed beneath the plate 162, with webs engaging and being captured by a step 166 feature on each side of the mast 20.
- Antifriction coverings are preferably provided to minimize friction between the mating surfaces as the drill head 22 moves along the length of the mast 20.
- the upper chain segment 168 A is attached to the drill head 22 with a connector 170 so that the drill head 22 moves with upper chain segment 168A when the cylinder body 156 moves in either direction upon pressurizing one of the sides of the piston (not visible) within the cylinder body 156.
- the lower chain segment 168B is fixed at one point to relatively stationary structure by a connector 172.
- the capability of movement of the slide chassis 16 on the main frame 14 (fixed to the drive chassis 12), the mast 20 on the mast pivot support 21, and the drill head 22 on the mast 20 can be used to increase the stability of the rig 10 when ascending or descending a grade.
- Figure 33 shows the drilling rig 10 descending a grade, and the slide chassis 16, the mast 20, and the drill head 22 shifted upwardly. This rebalancing lessens the tendency that the drilling rig 10 will flip backward.
- shifts can be carried out by manual operation of the associated actuators or can be automated by including a center of gravity sensor 174 and actuator control 176 responsive thereto. This will automatically carry out the shift to the extent and direction necessary to limit shifting of the center of gravity of the drilling rig 10 due to the grade being traversed.
- Figure 35 depicts the use of an industrial controller 176 adjacent the operator's seat 178 enables an operator while in the seat 178 to activate the various actuators.
- a commercially available wireless remote controller 177 can optionally be used to allow the operator to be standing somewhere alongside the rig 10.
- a drive controller 180 connected to valving may also be provided operated by movement of a handle 182 operating connected valving so as to increase or decrease speed, or turn right or left. Suitable such controllers are known and are commercially available.
- a separate brake foot pedal 184 can also interact with the drive controller 180 to conveniently enable braking in the conventional manner.
- a track or snow drive can be used by detaching the wheeled drive chassis and installing another drive chassis mounting a track or snow drive.
- the power plant can be quickly replaced or serviced by detaching the same and installing another engine, etc.
- a separate independently powered flat bed truck may provide a drive chassis for the drilling rig 10A as shown in Figure 36. This may be necessary when transported long distances.
- the slide chassis 16 (shown with a cover 186 in place) is preferably moved to its retracted position on the main frame 14 as shown.
- Support members 188 are secured to the bed 190 of the flat bed truck 184 and to the main frame 14. Drilling operations could be carried out using the truck 184, or an integrated drive chassis 12 may separately shipped for use supporting the main frame in the field.
- Figures 37 and 38 show a recirculating track drive chassis 192 connected to the main frame 14 by members 194 fixed to a track deck 196 ( Figure 38).
Abstract
Description
Claims
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201462055158P | 2014-09-25 | 2014-09-25 | |
US201562119316P | 2015-02-23 | 2015-02-23 | |
US14/702,853 US9688099B2 (en) | 2015-04-13 | 2015-05-04 | Mounting arrangement for installing auxiliary vehicle wheels |
PCT/US2015/052159 WO2016049422A1 (en) | 2014-09-25 | 2015-09-25 | Mobile drilling rig |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3198105A1 true EP3198105A1 (en) | 2017-08-02 |
EP3198105A4 EP3198105A4 (en) | 2018-07-11 |
Family
ID=58933705
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15843585.9A Withdrawn EP3198105A4 (en) | 2014-09-25 | 2015-09-25 | Mobile drilling rig |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3198105A4 (en) |
CN (1) | CN106715820A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110331934B (en) * | 2019-06-28 | 2020-09-18 | 重庆宏工工程机械股份有限公司 | Universal drilling machine |
CN112443276B (en) * | 2020-12-01 | 2022-11-25 | 中国地质科学院 | Tight rock geological exploration sampling drilling system and working method thereof |
CN115405249A (en) * | 2022-08-18 | 2022-11-29 | 中铁三局集团华东建设有限公司 | Horizontal MJS construction method based broken drill rod taking-out method |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3994350A (en) * | 1975-10-14 | 1976-11-30 | Gardner-Denver Company | Rotary drilling rig |
US4371041A (en) * | 1978-09-15 | 1983-02-01 | Drill Systems, Inc. | Multi-purpose mobile drill rig |
GB2050264A (en) * | 1979-06-04 | 1981-01-07 | Berry W | Rough terrain vehicle suspension |
US5636699A (en) * | 1995-07-26 | 1997-06-10 | Pitman, I; Samuel D. | Mobile hauling vehicle |
US6533045B1 (en) * | 2001-05-02 | 2003-03-18 | Jack M. Cooper | Portable drilling rig |
CA2458376C (en) * | 2001-10-09 | 2009-07-07 | Claude Macdonald | Multi-functional drilling vehicle |
CN100528647C (en) * | 2007-09-21 | 2009-08-19 | 三一重工股份有限公司 | Walking type mechanical supporting device and concrete pump vehicle with the same |
ES2714451T3 (en) * | 2013-03-20 | 2019-05-28 | Keller Holding Gmbh | Small drilling rig |
-
2015
- 2015-09-25 CN CN201580051956.7A patent/CN106715820A/en not_active Withdrawn
- 2015-09-25 EP EP15843585.9A patent/EP3198105A4/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
CN106715820A (en) | 2017-05-24 |
EP3198105A4 (en) | 2018-07-11 |
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