US3770067A - Reaction counterbalanced earth boring - Google Patents

Reaction counterbalanced earth boring Download PDF

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Publication number
US3770067A
US3770067A US00192153A US3770067DA US3770067A US 3770067 A US3770067 A US 3770067A US 00192153 A US00192153 A US 00192153A US 3770067D A US3770067D A US 3770067DA US 3770067 A US3770067 A US 3770067A
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Prior art keywords
casing
machine
earth boring
gear
cutters
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Expired - Lifetime
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US00192153A
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English (en)
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N Ikeda
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Tone Boring Co Ltd
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Tone Boring Co Ltd
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    • 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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/16—Plural down-hole drives, e.g. for combined percussion and rotary drilling; Drives for multi-bit drilling units
    • 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
    • E21B10/00—Drill bits
    • E21B10/02—Core bits
    • E21B10/04—Core bits with core destroying means
    • 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
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/22—Roller bits characterised by bearing, lubrication or sealing details
    • E21B10/24—Roller bits characterised by bearing, lubrication or sealing details characterised by lubricating details
    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor

Definitions

  • the present invention relates to an earth boring method and machine, and more particularly to such'a method and machine in which reaction torque can be substantially counterbalanced.
  • the earth boring method of the above application is characterized by the fact that the output torque of a high speed motor is transmitted with a high reduction ratio to a plurality of cutters disposed at mechanically balanced positions so that each of the cutters is rotated about its own axis while revolving about the cutter axis of the machine so as to reduce the reaction torque on the motor supporting mechanism.
  • this method it is not necessary to have drilling pipe of a high torsional rigidity, but it is simply required to support and suspend the boring machine with a thin-walled pipe, a strong hose or a chain. Further, it is possible to substantially simplify ground equipment.
  • the present invention has an object the further improvement of the machine as disclosed in the copending application Another object is to provide a novel and excellent boring method which can reduce the reaction torque on a main body of an earth boring machine on which a motor is mounted.
  • an earth boring machine comprising motor means mounted on a body of the machine, transmission means such as a speed change gear means connected with said motor means to divide the output torque thereof, a casing mounted on said body and rotatable with respect thereto, a plurality of cutters disposed on said casing at mechanically balanced positions, said cutters being driven to rotate about their own axes through the transmission means and a motion transmitting member which is rotatable co-axially with respect to the casing, said transmission means being further connected with said casing so that the latter is rotated by reaction in the direction opposite to the rotation of each cutter, the torque transmitted through the motion transmitting member being substantially equal to the brake torque of said casing.
  • the revolvable casing may be provided with a core breaker at the center of the end surface thereof so as to break a central core that remains at the bottom of a hole being bored.
  • the motors mounted on the body may be submersible motors, and a double pipe may be disposed at the center of the machine so as to feed boring water into and out of the hole being bored for applying the machine in a water boring method.
  • This arrangement is effective to perform a forced circulation of boring water.
  • the above earth boring machine may be provided with water discharge nozzle means on the casing so as to jet discharge water toward the cutters, preferably the leading sides thereof.
  • each of the cutters may be supported with its drive shaft forwardly inclined in the sense of the rotation of the casing. With this arrangement, cutting edges on each cutter are kept apart from the bore bottom when they are at the trailing side as seen in the rotation of the casing. Thus, cutting performance can further be improved.
  • the revolvable casing When the machine of the present invention is intended to be used in a boring water method, the revolvable casing may be a sealed casing filled with lubricating oil.
  • the machine may be provided with a liquid pressure balancing means so as to balance the pressure of the lubricating oil with the pressure of water in the bored hole to positively maintain a seal even in a deep hole.
  • the machine When the machine is used in a boring water method, it may be provided at the upper portion thereof with a thrust adjusting float which is so constructed that the amount of air therein can be readily adjusted.
  • a thrust adjusting float which is so constructed that the amount of air therein can be readily adjusted.
  • FIG. I is a diagrammatic elevational view, partly in vertical section, showing the general arrangement of a boring plant employing an earth boring machine according to the present invention
  • FIG. 2 is an elevational view, in vertical section, showing in detail the earth boring machine shown in FIG. 1;
  • FIG. 3 is a sectional plan view taken along the line A-A in FIG. 2, showing the arrangement of cutters;
  • FIGS. 4 through 6 show sectional views similar to FIG. 3 but showing other arrangements of cutters
  • FIG. 7 is a diagrammatical side elevation of another embodiment of the present invention in which each cutter is mounted on a forwardly inclined shaft, a part of the machine being shown in section to show the interior thereof;
  • FIG. 8 is a sectional view taken along the line VII]- VIII of FIG. 7;
  • FIG. 9 is a fragmentary sectional view showing a diaphragm type liquid pressure balancing means
  • FIG. 10 is a fragmentary sectional view showing a piston type liquid pressure balancing means.
  • FIG. 11 is a diagrammatical view with parts broken away of a thrust adjusting float in accordance with the present invention.
  • FIG. 1 there is diagrammatically shown the general arrangement of an earth boring plant by which the present invention is applied in a water reverse circulation method.
  • the reference numeral (1) generally shows an earth boring machine embodying the present invention.
  • the machine includes motors, however, as will be explained later in more detail by a torque analysis, the body of themachine is substantially free from a twisting torque load so that it is not required to use a drilling pipe of a high rigidity as has been required in a. conventional earth boring apparatus.
  • submersible electric or hydraulic motors may be used as driving power sources.
  • electric motors are employed and supplied with electric power through cables (3).
  • the cables (3) are continuously fed from a cable reel (9) as the depth of the hole (I-I) increases.
  • Water is supplied under pressure through a hose (4) and discharged at the bottom end of the boring machine to clean cutting edges on cutters and prevent slime from adhering thereto.
  • the slime and gravel are exhausted through anfexhaust hose (5).
  • a centrifugal pump it may be possible to use a centrifugal pump, however, it is a usual practice to feed air bubbles from an air'supply hose (6) into the exhaust conduit so as to effect an air lifting.
  • the reference numeral (13) designates an air compressor used for this purpose.
  • the slime-containing-water is circulated through a mud screen (11) and a cyclone (12) into a water supply pu p
  • the ground equipment may include a derrick (7) which may be of a simple and light duty construction as compared with that in a conventional apparatus.
  • a derrick (7) which may be of a simple and light duty construction as compared with that in a conventional apparatus.
  • the derrick (7) is only required to support an electrically operated chain block (8) or a head pulley for a hoist.
  • water can be circulated through hoses (4) and (5) so that it is not necessary to provide swivel joint means for water passages.
  • a guide (14) may be provided around the machine (1) for securing straight boring.
  • FIG. 2 there is shown an earth boring machine (1) embodying the present invention and intended to be used under water.
  • the machine (1) has a selfcontained driving means in the form of a submersible electric motor.
  • the machine (1) has a body including a central member a transmission gear box (130) secured to the central member 110) and submersible electric motors mounted on the gear box
  • the central member (110) is a double pipe construction including an inner pipe (111) and an outer pipe (112) which are respectively connected with the aforementioned water exhaust hose (5) and the water supply hose (4).
  • the water supplied under pressure through the water supply hose (4) is passed between the inner pipe (1 11) and the outer pipe (112) and discharged from nozzles (141).
  • the inner pipe (111) is connected at an intermediate portion thereof to the aforementioned air supply hose (6) to be supplied with compressed air for exhausting slime through thewater exhaust hose (5).
  • the central member (110) is in the form of a double pipe having the aforementioned inner and outer pipes (111) and (1 12)
  • the pressurized water from the ground is directly discharged to the bottom of the hole which is being bored by cutters'
  • the water then carries the slime produced during the boring operation through the inner pipe (111) for discharging it from the hole.
  • the machine of the present invention is effective to maintain a water reverse circulation.
  • the submersible motors (120) are secured to the double pipe or central member (110). In the illustrated embodiment, two motors (120) are used, however, it should be understood that the present invention is not intended to limit the number of such motors.
  • a double tubular shaft means (150, 151) is disposed about and coaxially with the central member (110). In one embodiment shown by the drawings, one tubular shaft (151) is arranged to rotate the revolution casing while another tubular shaft is used as a transmission member of power for the drill bit
  • Each of the motors (120) has an output shaft secured to a sun gear (I-l) of a first stage planetary gear means. A plurality of planetary gears (l-2) are in meshing engagement with the sun gear (I-]
  • the first stage planetary gear means is constituted by the sun gear (I-1) and the planetary gears (I-2).
  • Each of the planetary gears (l-2) is connected with a planetary gear (II-1).
  • a sun gear (II-2) is disposed coaxially with the sun gear (l-l) and meshes with the planetary gears (II-1)
  • the planetary gears (II-1) and the sun gear (II-2) constitute a second stage planetary gear means.
  • a planetary carrier (131) for supporting the planetary gears (I-2) and (II-l) is rotatable with respect to the gear box (130).
  • the planetary carrier (131) has a co-axial gear (III-1) secured thereto.
  • the gear (III-l) engages with a gear (III-2) secured to a revolvable casing (140) which is rotatable with respect to the body.
  • the gears (Ill-1) and (III-2) constitute a third stage speed reduction gear means.
  • a plurality of cutters (160) are rotatably mounted on the casing (140) at mechanically balanced positions.
  • a gear (IV-1) is secured to the sun gear (II-2) of the second stage planetary gear means.
  • the gear (IV-l) serves to drive a gear (IV-2) which is secured to a transmission member (150).
  • the gears (IV-1) and (IV-2) constitute a fourth speed reduction gear means.
  • the transmission member (150) is rotatable with respect to the casing (140).
  • a gear (V-l) is provided beneath the transmission member (150) for driving a gear (V-2) secured to the support shaft of each cutter (160).
  • the gears (V-l) and (V-2) constitute a fifth stage gear means.
  • the double pipe (110) is of a relatively large diameter with respect to the diameter of the hole (H) to be bored.
  • the gear (V-l) has a substantial diameter and the fifth stage gear means is designed as a speed increasing stage.
  • a core breaker (142) may be provided at the center of the end of the casing (140) for cutting the soil portion which is left unbroken by the peripherally disposed cutters (160).
  • Water discharge nozzles (141) are mounted on the casing (140) in proximity to its end. Suitable seal means may be provided between the body (100) and the casing (140).
  • This fifth stage gear means serves to rotate the cutters (160) in the clockwise direction as shown by the arrow (P) in FIG. 3 at a slightly increased speed.
  • the casing Since the planetary carrier (131) supporting the planetary gears at'the first and second gear means is connected through the third stage gear means to the revblvable casing (140), the casing is rotated counterclockwise as shown by (Q) due to the reaction produced by the rotation of the cutters (160) (refer to FIG. 3). As the casing (140) is rotated counterclockwise (Q), the planetary carrier (131) is caused to rotate clockwise through the third stage gear means. Thus, the torque for supporting the body (100) can be counterbalanced as will be explained later in detail.
  • each of the cutters (160) is rotated about its own axis as shown by the arrow (P) in FIG. 3, while revolving about the axis of the machine or the hole in the counterclockwise direction as shown by the arrow (Q).
  • R designates the speed reduction ratio at the third stage gear means.
  • the torque (T transmitted from the gear (ll-2) through the gear (IV-1) to the gear (IV-2) can be represented by' the following equation,
  • R is the speed reduction ratio of the fourth stage gear means.
  • the torque (T is transmitted through the transmission member to the gear (V-l) secured thereto.
  • the revolving torque (T about the center axis of the machine produced by the force (F) acting on the cutter (160) can be represented by the following equation.
  • the geartrain is designed so that the requirement of the equation (10) is met, them the requirement of the equation (11) can be met.
  • the rotating torque (Ty) acting on each cutter (160) becomes equal to the revolving torque (T). Since the rotation of the cutter (160) is in the opposite direction to the revolution thereof, the rotating torque (T acting on the cutter can be completely counterbalanced with the revolving torque (T).
  • the reaction torque acting on the body (100) of the earth boring machine (1) can be completely counterbalanced or at least reduced to such an extent that it does not have any effect on the means for suspending the machine. Therefore, the body (100) of the machine can be suspended by a chain (2), wire rope and the like without any risk that the chain (2) or wire rope is twisted or entangled with the cable (3) and the hoses (4), (5) and (6).
  • the allowable DN vaiue is about 200,000.
  • the machine of the present invention includes the aforementioned unique torque transmission arrangement, the amount of output torque does not have any remarkable effect on the means for supporting the machine, so that it is possible to use a low speed high torque motor. For this reason, the power transmission means can be simplified by eliminating a complicated speed reduction means. In other words, since the apparatus does not include any high speed rotating part, there can be attained remarkable structural advantages.
  • the machine of the present invention is particularly suitable for boring a large diameter hole in an earth formation containing gravel or boulders by performing a strong reverse circulation through a large diameter water discharge pipe provided at the center of the machine.
  • FIG. 3 shows an example of arrangement of the cutters (160) in the machine shown in FIG. 2.
  • each of the cutters (160) is rotated about its own axis while simultaneously revolving in the opposite direction about the axis of the machine.
  • each cutting edge on each cutter is moved along a trochoidal path.
  • the machine of the present invention also has features as disclosed in the above-noted co-pending patent application entitled An Earth Boring Apparatus," so that it provides excellent performance.
  • FIGS. 4 through 6 show alternative arrangements of a plurality of cutters by plan views similar to FIG. 3.
  • FIG. 4 threecutters (160) of the same diameter are arranged at equidistant positions on a circle coaxial with the machine.
  • two large diameter cutters (160) and two small diameter cutters (161) are alternately arranged.
  • the large diameter cutters (160) can be positioned relatively close together, so that it is possible to prevent substantially core formation at the center of the hole bottom.
  • four cutters (160) are positioned at mechanically balanced but not circumferentially equi-distant positions.
  • pressurized water is discharged through the nozzles (14!) toward each cutter (160), preferably the leading side thereof. Since the relative position between each water discharge nozzle (141) and each cutter (160) remains unchanged, it is possible to continuously clean the leading side cutting edges on each cutter (160) which are expected to perform a substantial part of the effective work. Thus, it is possible to maintain sharpness of the cutting edges.
  • the cutter (160) having cutting edges at the outer periphery is supported on a drive shaft having a longitudinal axis (S) inclined forwardly or in the direction of revolution by an angle (6).
  • the cutting edges at the leading side always contact the bottom of the hole (H), while those at the trailing side are spaced therefrom as shown by the gap (G). In other words, the cutting edges on the cutter (160) intermittently come into engagement with the hole bottom.
  • a screw gear In order to transmitpower between offset shafts, a screw gear has commonly been used. However, since the screw gear performs its function through a point contact, although it may be useful when it is desired to transmit a motion, it cannot bear a heavy load. Particularly, in an application of the machine in accordance with the present invention where the machine is subjected to a heavy load, it cannot be used since it is heavily worn.
  • the gear (V-2) engaging with the gear (V 1) is formed with internal spline teeth (V-3) for engagement with an external spline (V-4).
  • V-3 internal spline teeth
  • V-4 external spline
  • a gap is provided between the splines (V-3) and (V-4) as shown in FIG. 8.
  • the provision of the gap enables arrangement of the drive shaft with its axis (s) slightly inclined by an angle (9) with respect to the vertical line.
  • the casing (130) may be provided with liquid pressure balancing means at an appropriate position.
  • FIGS. 9 and 10 there is shown examples of such liquid pressure balancing means (190) adapted to be provided on the casing (130).
  • FIG. 9 shows a liquid pressure balancing means (190) including a diaphragm (191) for balancing the oil pressure in the casing and the water pressure in the bored hole.
  • the liquid pressure balancing means (190) comprises a piston (192) and a cylinder (193).
  • the machine can be used for drilling a deep hole maintaining a positive seal.
  • the earth boring machine (I) of the present invention may be suspended by .a chain (2) or the like as shown in FIG. 1. In such a case, downward thrust is produced by the weight of the machine itself.
  • a weight or a drill collar may suitably be added.
  • a thrust adjusting float When the hole being bored is filled with water, a thrust adjusting float may conveniently be used.
  • An example of such an application is shown in FIG. 11.
  • a thrust adjusting float (200) is disposed above the boring machine (1). and suspended by a chain (2).
  • compressed air is supplied through an air hose (202) into an air chamber (201) so as to discharge the water through a water port (203).
  • the buoyancy of the chamber (201). is increased with the result that the downward thrust acting on the cutters is correspondinglydecreased.
  • the method of the present invention can positively provide the advantageous features of the co-pending patent application entitled Reaction Minimized Earth Boring in that it does not require any large diameter stiff drilling pipe as in a conventional apparatus, and that the ground equipment can be simplified so that the efficiency of the boring operation can be improved.
  • the machine of the present invention is particularly effective to perform the above novel method, and is particularly suitable for boring a large diameter hole with a water boring method.
  • each cutting edge on each cutter is moved along a trochoidal path, so that the cutting performance can remarkably be improved as compared with a conventional apparatus.
  • the earth boring machine may be provided at the center part thereof with a large diameter water exhaust pipe.
  • a large diameter water exhaust pipe it is possible to perform the boring operation with a strong reverse circulation for removing gravel, boulders and the like.
  • An earth boring machine comprising a power source secured to a central member, a speed change gear means having a first casing rotatable coaxially with the output shaft of said gear means, two tubular shafts disposed rotatably about and coaxially with said central member, a second revolution casing rotatable about said central member and connected to one of said tubular shafts, a drill bit rotatably supported on said revolution casing about its own axis and connected with the other one of said tubular shafts, wherein the directions of the rotation torques of said tubular shafts are opposite to each other and the intensities of the rotation torques thereof are substantially the same.
  • central member is a double pipe structure comprising inner and outer pipes to form a cylindrical gap between them extending to the lower end portion thereof, through which gap water is fed to nozzle means disposed at the lower end portion of said revolution casing to supply water into the bottom of a bored hole and through which inner pipe slime is exhausted.
  • revolution casing is a sealed casing filled with iubricant oil and provided with liquid pressure balancing means.
  • An earth boring machine according to claim 1 further comprising a thrust adjusting float.

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  • 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)
US00192153A 1971-05-13 1971-10-26 Reaction counterbalanced earth boring Expired - Lifetime US3770067A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46032015A JPS5117201B1 (enrdf_load_stackoverflow) 1971-05-13 1971-05-13

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US3770067A true US3770067A (en) 1973-11-06

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US00192153A Expired - Lifetime US3770067A (en) 1971-05-13 1971-10-26 Reaction counterbalanced earth boring

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US (1) US3770067A (enrdf_load_stackoverflow)
JP (1) JPS5117201B1 (enrdf_load_stackoverflow)
DE (1) DE2162314C3 (enrdf_load_stackoverflow)
FR (1) FR2137433B1 (enrdf_load_stackoverflow)
GB (1) GB1371932A (enrdf_load_stackoverflow)
IT (1) IT945398B (enrdf_load_stackoverflow)

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US4102415A (en) * 1977-02-08 1978-07-25 Cunningham Wesley B Drilling device
US4133396A (en) * 1977-11-04 1979-01-09 Smith International, Inc. Drilling and casing landing apparatus and method
US4304309A (en) * 1979-02-16 1981-12-08 Dome Petroleum Limited Surface drilling apparatus
US4629010A (en) * 1984-05-29 1986-12-16 Claude Sourice Process and device for sinking wells
US4646853A (en) * 1984-07-31 1987-03-03 The Robbins Company Shaft boring machine and method
US4718504A (en) * 1985-03-15 1988-01-12 Tone Boring Co., Ltd. Trench excavator
US20050091885A1 (en) * 2003-11-04 2005-05-05 Maximilian Arzberger Gear unit and method for controlling an internal pressure in the gear unit
US20090241383A1 (en) * 2008-04-01 2009-10-01 Ihc Holland Ie B.V. Suction Tube Device Provided with Drive Systems and Method of Repairing Same
CN103485712A (zh) * 2013-09-24 2014-01-01 北京嘉友心诚工贸有限公司 一种硬护壁孔底取进动力头
CN104612584A (zh) * 2015-01-17 2015-05-13 刘玉秋 力矩平衡钻孔机
US20150345222A1 (en) * 2014-06-02 2015-12-03 King Fahd University Of Petroleum And Minerals Directional system drilling and method
CN106286780A (zh) * 2016-10-13 2017-01-04 周德吉 压力补偿装置及用于检测被补偿装置是否漏油的方法
US20240167341A1 (en) * 2022-11-18 2024-05-23 Haozhou Drilling Engineering Machinery (Shandong) Co., Ltd. Full-hole reverse circulation cluster-type down-the-hole (DTH) hammer with multiple independent hannels

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JPS52129004U (enrdf_load_stackoverflow) * 1976-03-29 1977-10-01
DE2845878C2 (de) * 1978-10-21 1983-01-20 Salzgitter Maschinen Und Anlagen Ag, 3320 Salzgitter Bohreinrichtung für Erdbohrungen
FR2512875B1 (fr) * 1981-09-11 1985-07-12 Campguilhem Jacques Dispositif a tubes multiples avec dispositif de rotopercussion annulaire pour tube inferieur par barre de percussion centrale
US4790391A (en) * 1985-10-04 1988-12-13 Tone Boring Co., Ltd. Air pressure impact drilling method and apparatus for same
DE9107187U1 (de) * 1991-06-11 1991-07-25 Bauer Spezialtiefbau GmbH, 8898 Schrobenhausen Fräsrahmen für eine Schlitzwandfräse mit einer Druckausgleichsvorrichtung für die Lagerdichtungen
AT501696B1 (de) 2004-03-30 2008-03-15 Alwag Tunnelausbau Gmbh Verfahren und vorrichtung zum bohren von löchern in boden- oder gesteinsmaterial
NL1033050C2 (nl) 2006-12-13 2008-06-16 Vertical Dev B V Funderingsysteem voor het vormen van een funderingspaal in de grond.
EP2592214A1 (en) * 2011-11-10 2013-05-15 Chuan Home Machinery Co., Ltd. Air pressure reused pneumatic hammer drill
DE202019102477U1 (de) 2019-02-27 2020-06-03 Liebherr-Components Biberach Gmbh Antriebseinrichtung für eine Schlitzwandfräse

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US1574040A (en) * 1924-11-13 1926-02-23 Alfred W Lasher Drill
US1904522A (en) * 1931-11-11 1933-04-18 Haskel A Pippin Apparatus for drilling wells
DE881484C (de) * 1944-03-28 1953-06-29 Salzgitter Maschinen Ag Bohrturbine
GB712913A (en) * 1951-08-27 1954-08-04 Alexander Vellan Improvements in and relating to earth boring apparatus
US3161243A (en) * 1960-07-22 1964-12-15 Frank F Davis Drilling system with plural below ground motors
US3285351A (en) * 1962-08-06 1966-11-15 Michael R Caro Drilling apparatus
US3181631A (en) * 1962-08-24 1965-05-04 Cameron And Jones Inc Counter-rotating earth drill
US3232362A (en) * 1963-11-12 1966-02-01 Cullen Well drilling apparatus
US3322466A (en) * 1963-12-30 1967-05-30 Gewerk Eisenhuette Westfalia Mining machine with concentric relatively variably rotated heads
US3431989A (en) * 1967-07-31 1969-03-11 Willis D Waterman Planetary excavator
US3556231A (en) * 1968-08-30 1971-01-19 Homer I Henderson Bit weight maintainer for marine earth boring

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4102415A (en) * 1977-02-08 1978-07-25 Cunningham Wesley B Drilling device
US4133396A (en) * 1977-11-04 1979-01-09 Smith International, Inc. Drilling and casing landing apparatus and method
US4304309A (en) * 1979-02-16 1981-12-08 Dome Petroleum Limited Surface drilling apparatus
US4629010A (en) * 1984-05-29 1986-12-16 Claude Sourice Process and device for sinking wells
US4646853A (en) * 1984-07-31 1987-03-03 The Robbins Company Shaft boring machine and method
US4718504A (en) * 1985-03-15 1988-01-12 Tone Boring Co., Ltd. Trench excavator
US7789201B2 (en) * 2003-11-04 2010-09-07 Bauer Maschinen Gmbh Gear unit and method for controlling an internal pressure in the gear unit
US20050091885A1 (en) * 2003-11-04 2005-05-05 Maximilian Arzberger Gear unit and method for controlling an internal pressure in the gear unit
US20090241383A1 (en) * 2008-04-01 2009-10-01 Ihc Holland Ie B.V. Suction Tube Device Provided with Drive Systems and Method of Repairing Same
US8127473B2 (en) * 2008-04-01 2012-03-06 Ihc Holland Ie B.V. Suction tube device provided with drive systems and method of repairing same
CN103485712A (zh) * 2013-09-24 2014-01-01 北京嘉友心诚工贸有限公司 一种硬护壁孔底取进动力头
US20150345222A1 (en) * 2014-06-02 2015-12-03 King Fahd University Of Petroleum And Minerals Directional system drilling and method
US9657521B2 (en) * 2014-06-02 2017-05-23 King Fahd University Of Petroleum And Minerals Directional system drilling and method
US9863188B2 (en) 2014-06-02 2018-01-09 King Fahd University Of Petroleum And Minerals Multi-motor steerable drilling system and method
CN104612584A (zh) * 2015-01-17 2015-05-13 刘玉秋 力矩平衡钻孔机
CN106286780A (zh) * 2016-10-13 2017-01-04 周德吉 压力补偿装置及用于检测被补偿装置是否漏油的方法
US20240167341A1 (en) * 2022-11-18 2024-05-23 Haozhou Drilling Engineering Machinery (Shandong) Co., Ltd. Full-hole reverse circulation cluster-type down-the-hole (DTH) hammer with multiple independent hannels
US12286850B2 (en) * 2022-11-18 2025-04-29 Haozhou Drilling Engineering Machinery (Shandong) Co., Ltd. Full-hole reverse circulation cluster-type down-the-hole (DTH) hammer with multiple independent channels

Also Published As

Publication number Publication date
DE2162314A1 (de) 1972-11-23
JPS5117201B1 (enrdf_load_stackoverflow) 1976-06-01
FR2137433A1 (enrdf_load_stackoverflow) 1972-12-29
IT945398B (it) 1973-05-10
FR2137433B1 (enrdf_load_stackoverflow) 1974-04-05
DE2162314C3 (de) 1974-03-28
GB1371932A (en) 1974-10-30
DE2162314B2 (de) 1973-08-30

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