EP2896779A1 - Installation de forage équipée d'une zone de dépôt de tiges et d'un dispositif de manipulation de tiges et procédé de fonctionnement d'une telle installation de forage - Google Patents

Installation de forage équipée d'une zone de dépôt de tiges et d'un dispositif de manipulation de tiges et procédé de fonctionnement d'une telle installation de forage Download PDF

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Publication number
EP2896779A1
EP2896779A1 EP15150557.5A EP15150557A EP2896779A1 EP 2896779 A1 EP2896779 A1 EP 2896779A1 EP 15150557 A EP15150557 A EP 15150557A EP 2896779 A1 EP2896779 A1 EP 2896779A1
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EP
European Patent Office
Prior art keywords
mast
handling device
drilling rig
drill string
linkage
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Withdrawn
Application number
EP15150557.5A
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German (de)
English (en)
Inventor
Friedrich Büssis
Jürgen VOLKERS
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bentec Drilling and Oilfield Systems GmbH
Original Assignee
Bentec Drilling and Oilfield Systems GmbH
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 Bentec Drilling and Oilfield Systems GmbH filed Critical Bentec Drilling and Oilfield Systems GmbH
Publication of EP2896779A1 publication Critical patent/EP2896779A1/fr
Withdrawn legal-status Critical Current

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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
    • E21B15/00—Supports for the drilling machine, e.g. derricks or masts
    • E21B15/02—Supports for the drilling machine, e.g. derricks or masts specially adapted for underwater drilling

Definitions

  • This invention relates to a deep well drilling rig, for example, for drilling wells on hydrocarbon deposits for oil and gas exploration or for generating geothermal energy, the rig comprising a boom storage area and a boom handling facility.
  • the GestCodeabstell College is located on the so-called drill floor, ie on the acting as a working platform surface of the drilling rig.
  • the GestCodeabstell College is executed, for example - but not necessary - in the form of a finger stage with a defined so-called setback area.
  • the invention further relates to a method for operating such a drilling rig.
  • handling device rod handling device for transporting drill string elements and for transporting in the terminology usually referred to as casings casing pipes from and to the work platform.
  • the transfer to the work platform and the takeover of the work platform takes place on that side of the drilling rig at which the handling device is positioned.
  • the area between the handling device and the drill mast which is referred to below as a mast, has often been used as the position for the linkage area, ie, a position located in front of the mast, as viewed from the handling device.
  • This has the advantage that by means of the handling device drill string elements easily reach the linkage storage area and can be picked up from there just as easily.
  • due to the structure of the mast by means of the handling device another position is not reachable.
  • a fully equipped or substantially fully equipped boom storage area sometimes proves to be an obstacle to other work on or at the drilling rig.
  • a drilling rig with a drilling mast in the form of a single, lateral of the Well known mast segment known.
  • the single pole segment leaves the area in front of, behind and beside the borehole on three sides, so that a finger platform acting as a rod end bearing can be behind the mast, viewed from a handling device, leaving a linkage feed area between the handling device and the mast free.
  • a drilling rig having the features of claim 1.
  • a mast for this purpose, it is provided with a mast, a GestCodeabstell Scheme and a rod handling device in a drilling rig of the type mentioned that the GestCodeabstell Scheme is seen from the position of the rod handling device behind the mast.
  • the advantage of the proposed approach for a drilling rig is that with the positioning of the Gestfiteabstell Schemes behind the mast of previously occupied by the Gestfiteabstell Scheme space before the mast as a movement space for the rod handling device and each of which transported drill pipe elements or casings is available.
  • the mast in the form of two vertical or at least substantially vertical and acting as legs supporting structures, wherein in the mast between the two legs a device for rotating, lifting and lowering drill pipe, so for example a so-called top drive, by means of a The top of the mast and from there to a pulley mechanics guided support rope (the so-called "fast-running rope", almost line) is movable in the vertical direction, and the support cable in front, runs next to or in one of the legs, the space between the two legs for the drilling operation and handling of drill string elements free.
  • a pulley mechanics guided support rope the so-called "fast-running rope", almost line
  • This free area allows the supply of vertical (upright) drill string elements from the boom storage area located behind the mast to a position above the wellbore, as well as feeding also vertical drill string elements to the over-the-hole position by means of the handling device located in front of the mast. Likewise, it is also possible to pass through vertical drill string elements from a position in front of the mast to the boom storage area behind the mast and vice versa.
  • the support rope runs in front of, next to or in one of the legs, it is ensured that the support cable never blocks the area between the legs and thus the possibility for the described various handling operations. If the support cable runs in the respective pillar, in addition a particularly secure guidance of the support cable is given.
  • the linkage dumping area is intended and arranged for vertically supporting drill string elements, and by means of the linkage handling device, drill string elements and casing pipes can be fed in a vertical orientation to a position above a borehole.
  • the mast of the drilling rig is in the complete height respectively from or to the rod storage area transported drill string elements as well as in the complete height of each of the rod handling device transported drill string elements free of struts and the like from a leg to the respective opposite leg, drill pipe elements can be swapped in and out of the boom storage area and fed and transported away by means of the boom handling device.
  • a particular embodiment of a rig in which the mast is free of braces and the like in the manner described above is a mast having two vertical or at least substantially vertical segments functioning as legs. If the two legs / segments are connected together only in the region of their upper ends, the mast is even along its entire height or at least substantially along its entire height free of such struts.
  • a free end of the support rope acts as a dead rope and is guided on a dead rope anchor fixed to the mast
  • the dead rope, as well as the support rope, before, next to or in one of the legs it is provided that the dead rope, as well as the support rope, before, next to or in one of the legs. Then it is ensured that the dead rope never blocks the area between the legs.
  • the support cable is guided in front of, next to or in one of the two legs and the dead rope in front, next to or in the other leg.
  • the concept proposed here is particularly suitable for extensive automation of the drilling operation, in that drill pipe elements and the like are automatically, fully automatically or at least partially automatically moved from and to the boom storage area and transported by means of the boom handling device.
  • FIG. 1 shows a drilling rig 10 according to the concept proposed here.
  • the drilling rig 10 basically comprises a substructure 12 as well as the working platform 14 formed on the substructure 12 and designated in the technical terminology as a drill floor, on which or on which the mast 16 rises.
  • a device for rotating, lifting and lowering the drill string at least in the vertical direction movable is a so-called topdrive 18 shown as such a device - but without waiving any further generality.
  • the mast 16 in the embodiment shown here is a mast 16 with two vertical segments, hereinafter generally referred to as legs 20, 22 (first pillar 20, second pillar 22) and functioning as central support structures. According to the orientation and the arrangement of these legs 20, 22 (segments), the mast 16 may also be referred to as a "twin leg mast". Between the two legs 20, 22 remains a free space 24, in which the Topdrive 18 is movable, and the two legs 20, 22 include the recessed into the working platform 14 turntable 26 so that the drill string during drilling and when installing and removing drill pipe in the space 24 between the two legs 20th , 22 is located.
  • the Topdrive 18 is vertically movable in the mast 16 by means of a so-called lower block (block) 28 of a pulley mechanism, which is referred to in specialist terminology as a traveling block.
  • a so-called lower block (block) 28 of a pulley mechanism which is referred to in specialist terminology as a traveling block.
  • a traveling block As a means for horizontal adjustment and as torque arms function in the embodiment shown by Topdrive 18 outgoing, one-sided or both sides of the legs 20, 22 guided, in particular telescopic, spacer 30th
  • a configuration of an effective as a positioning device 32 crown bearing and the deflection rollers included is affected manually or automatically, with the result that referred to in technical terminology as a crown block upper bottle of the pulley mechanism Lowering or lifting the Topdrives from its substantially central position in the direction of one of the legs 20, 22 is moved.
  • a crown block upper bottle of the pulley mechanism Lowering or lifting the Topdrives from its substantially central position in the direction of one of the legs 20, 22 is moved.
  • an electromotive or hydraulic displacement of the bearings of the crown block and of the adjacent deflection rollers caused by toothed racks or the like comes into consideration.
  • mast 16 means for horizontal positioning of the top drive 18, so for example as an effective positioning device 32 crown bearing, as well as for adjusting the suspended under the clamp 28 Topdrives 18 and effective as torque supports spacers 30 are provided with a method of positioning device 32 also a length adjustment of the spacers 30, which are designed for this purpose, for example telescopically.
  • Hebewerk For vertical movement of the top drive 18 in the mast 16 a not shown here and, for example, in the substructure 12 of the drilling rig 10 placed Hebewerk is provided in a conventional manner, for example, a lift in the form of or in the manner of in the EP 2 303 754 B1 described gearless elevator. From Hebewerk leads in well-known manner in the terminology as a fast-running rope (fast line) and here and hereinafter referred to as a traction cable 34 rope to the mast top and provided there to the deflection roles. The support cable 34 is guided from there in basically known manner via one or more pulleys to the block 28.
  • the course of the support cable 34 in front of the pillar 20, 22 is otherwise the in the figures ( Fig. 1 . Fig. 3 . Fig. 4 ) in favor of the in the leg 20, 22 not visible course shown example and especially in the side view according to FIG. 3 is the there, however, only indicated course of the support cable 34, the course before the leg 20 clearly.
  • the space 24 between the legs 20, 22 remains at a comparatively low mast 16, ie at a mast 16, the height in the range of a sum of the length of the drill string elements 42 and a relevant total length of the block 28 or the like and the top drive 18 is free.
  • To the drilling rig 10 also includes a hereinafter referred to as handling device 40 linkage handling device.
  • the handling device 40 drill pipe elements 42 are received, stored, transported and rotated in a respective desired orientation, that is, for example, rotated transversely to the longitudinal axis.
  • a handling device in the form of a linkage swivel device sometimes also referred to as knuckleboom, in which the drill string elements 42 in a comparison with the representation in FIG. 1 Aligned in the plane rotated by 90 ° orientation of the handling device and pivoted from this orientation during transport to the working platform 14 in a vertical (upright) position.
  • Drill pipe members 42 are shown in FIG FIG. 1 shown in four different positions. First, a horizontally mounted drill pipe element 42 in a rod bearing 44 arranged next to the substructure 12. Then a drill rod element 42 lifted from the handling device 40 onto the plane of the work platform 14 and already rotated. Furthermore, a handling device 40 in a vertical (upright) orientation over the Turntable 26 positioned drill pipe element 42 and finally a plurality of drill string elements 42 in a GestCodeabstell Episode 46 on the level of the work platform 14 and outside by the legs 20, 22 certain base of the mast 16. In the Gestfiteabstell Scheme 46, the drill string elements 42 are vertical, so upright, stored.
  • two so-called doubles combined drill pipe elements 42 are turned off in the finger stage 48 in each case.
  • each three combined drill string elements 42 store.
  • the concept proposed here is therefore independent of the length of the drill string elements 42 and is suitable for different conventional configurations of drill pipe elements 42, namely in particular for the above-mentioned singles, supersingles, doubles and triples or even more than three combined drill string elements 42.
  • the handling device 40 combines in the illustrated embodiment, the function of a linkage elevator and the function of a so-called pipe handlers.
  • a boom elevator transports drill pipe members 42 to and from a boom support 44 adjacent to the base 12 and to and from the platform 14.
  • a pipe handler accepts or transfers drill string members 42 to the work platform 14 and moves them away from the turntable 26 or turntable 26 out.
  • there are also individual handling devices in particular at least one handling device acting as a linkage elevator and at least one handling device acting as a pipe handler, for use with the concept presented here.
  • Formulations such as "turntable movement” and “turntable movement” or similar formulations are intended to express in short form a movement to or from a position usually above the turntable and thus to a position above the drill string fixed in the turntable. This is to be read below with each use of the short form of the designation of this position.
  • a finger stage 48 is formed with either one-sided or two-sided struts (fingers) for vertical support of the drill string members 42.
  • a finger stage 48 with one-sided struts 48 remains next to the finger stage.
  • space remains between the two parts of the finger stage, as is the case with the drilling rig 10 shown in the illustrations.
  • lining pipes and the like have to be conveyed to the turntable 26. This is not always easy and above all requires the presence of personnel on the work platform 14. For the staff, the necessary measures then represent a heavy physical work and, above all, also entail an increased risk of injury and accidents.
  • a rod feed area 50 (FIG. FIG. 2 ), ie an area in which drill rod elements 42 are transported from or to the turntable 26 by means of the handling device 40, from the rod storage area 46, in particular a Gestlindeabstell Society 46 in the form of a finger stage 48, separated.
  • This spatial separation means that the space occupied in previous drilling rigs 10 by the boom-stopping area 46 in front of the mast 16 is now available for the handling device 40 or other machines and units.
  • the supply of, for example, casings but also other small tools, connectors and other equipment is thus even with a fully developed drill string and thus behind the mast 16 fully populated finger stage 48 still possible and thus enormously easier.
  • FIG. 2 shows the drilling rig 10 according to FIG. 1 in a top view in a sectional view with a sectional plane below the finger stage 48.
  • This clearance can also be used for example for a mast 16 mounted on the swivel arm or the like, which can be used, for example, to transport heavy equipment and the like from and to the working platform 14.
  • the surface of the work platform 14 can be kept comparatively small in front of the mast 16.
  • arm-like segments of the handling device 40 and the like can be made shorter and lighter. Due to the shorter path from and to the turntable 26, this also results in time gains when handling the drill pipe elements 42 by means of the handling device 40.
  • FIG. 3 shows the drilling rig 10 according to FIG. 1 in a side view.
  • the position of the linkage removal area 46 lying behind the mast 16 as seen by the handling device 40 and the position of the linkage supply area 50 lying in front of the mast 16 as seen by the handling device 40 can be clearly recognized.
  • the proposed here new concept for a drilling rig 10 is particularly well suited for extensive automation of the drilling operation, so that interference by personnel, especially potentially hazardous work, avoided or at least largely avoided.
  • Such a company is also referred to as "hands-off" in specialist terminology.
  • a not shown here, but basically known control device for automating the manipulator 52 includes in its memory on the one hand a control program for determining the automatic functionality of the manipulator 52 and on the other hand information on the position of the turntable 26 and to the position of the Gestlindeabstell Schemes 46 and the individual parking spaces formed therein.
  • the control device also manages information in its memory about parking spaces already occupied in the boom storage area 46.
  • a drill pipe element 42 can be successively picked up by the manipulator 52 and moved to the turntable 26 so that each in this way to the turntable 26 moved drill string element 42 with the drill string can be combined.
  • a respective drill rod element 42 removed on the turntable 26 can be moved by means of the manipulator 52 to a next free parking space in the linkage setting region 46.
  • the installation and removal of the drill string can be largely automated in this way by the retrieval automatically and without user intervention in each case a new drill pipe element 42 picked up from the GestCodeeabstell Society 46 and on the turntable 26 - possibly also automatically - combined with the drill string during installation of the drill string ,
  • the reverse movement when removing the drill string can be done automatically successively and without user intervention.
  • a semi-automatic operation can be implemented, in which the retrieval of a drill pipe element 42 from the Gestlindeabstell Scheme 46 and positioning this drill string member 42 is accessed via the turntable 26 by means of the manipulator 52 each by an operator action on the drilling rig 10 active personnel.
  • a basically comparable degree of automation is also provided for the operation of the handling device 40.
  • a fully automatic operation is basically conceivable in which by means of the handling device 40 drill pipe elements 42 or casings picked from a located next to the base 12 rod bearing 44, raised to the level of the work platform 14, rotated and moved to the turntable 26 to be there - also automatically - to be combined with the drill string.
  • the same applies to the reverse transport path are received in the drill pipe elements 42 or casing pipes by means of the handling device 40 on the turntable 26 and transported to the rod assembly 44.
  • Such a fully automatic and / or semi-automatic operation of the handling device 40 can be controlled and / or monitored by a separate control device of the type mentioned above.
  • both the manipulator 52 and the handling device 40 are controlled and / or monitored by means of the same control device.
  • For coordinating the movements of the manipulator 52 and the handling device 40 is as a partial functionality of the fully and / or semi-automatic control of the manipulator 52 and the handling device 40th determining control program provides a mutual locking of the area above the turntable 26 so that only either the manipulator 52 or the handling device 40 can enter this area to supply or remove a drill pipe element 42 there. In this way, otherwise possible collisions between the manipulator 52 and the handling device 40 and each moving drill string elements 42 are avoided.
  • the concept presented here is based, on the one hand, on a rod staging area 46, in which the drill string elements 42 located there are stored in a vertical orientation, for example by means of a finger platform 48, and on a special mast 16, for example. that drill pipe elements 42 can be transported in vertical orientation along two different transport paths.
  • a first transport path is the transport path from and to the GestCodeabstell Scheme 46, ie the transport path from GestCodeabstell Scheme 46 to a location within the defined by the legs 20, 22 base of the mast 16, usually the turntable 26, and the corresponding path in the opposite direction.
  • the GestCodeabstell Society 46 is usually - but not necessary - outside the base of the mast 16.
  • a second transport path is the transport path along which drill pipe elements 42 or casing pipes are transported from or to the turntable 26 or another location within the base area of the mast 16 by means of the respective handling device 40.
  • the mast 16 is characterized in that it is free of struts, truss or other fasteners at least in the full amount of during transport along these transport routes each vertical or at least substantially vertically oriented drill pipe elements 42 or casings, namely free from bracing, etc. of a pillar 20, 22 to the respective opposing leg 20, 22.
  • the mast 16 shown here as an embodiment with two legs 20, 22 is an example of a mast 16, which meets these conditions. This can be particularly well based on the representation in FIG. 2 comprehend. Of course, it is readily apparent that an exactly vertical orientation of the two legs 20, 22 is not necessary.
  • the mast 16 in the area of the two transport paths described above and in the full amount of each incoming or outgoing drill string elements 42 or feed pipe is free of braces and the like.
  • the concept proposed here is not limited to a mast 16 with two legs 20, 22. Under the conditions outlined above (free transport routes in the entire height of the respective transported elements), poles with more than two legs or more are also available as two central support structures and Gestfiteabstell Schle 46 behind and / or next to the mast 16 into consideration.
  • a linkage staging area 46 within the base area of the mast 16 is also possible. Then, the above-mentioned first transport path runs within the base area of the mast 16.
  • FIG. 4 shows a particular embodiment of the drilling rig 10 according to FIG. 1 ,
  • a device for reducing the sound emission of the top drive 18 is provided as a soundproofing measure.
  • the top drive 18 is located inside a sound insulation casing 54 which acts as a means for reducing the sound emission. This is arranged so that it surrounds the top drive 18 at least on four sides, namely front and rear and right and left.
  • This all-round enclosure of the top drive 18 through the sound insulation casing 54 is possible due to the mast configuration and from the top drive 18 on both sides to a pillar 20, 22 of the mast 16 reaching spacers 30 by the sound insulation casing 54 to the spacers 30 and / or the Topdrive 18th is mounted and the top drive 18 also includes on the back, with the side of the top drive 18 understood that side which is directly or indirectly connected to the spacers 30.
  • a drilling rig 10 and a method for operating a drilling rig 10 are disclosed, wherein the drilling rig 10 comprises a mast 16, a linkage staging area 46 and a handling device 40 and wherein the GestCodeabstell Scheme 46 seen from the position of the handling device 40 from behind the mast 16 or optionally within the base of the mast 16 and then at least behind the turntable 26 is located.
  • the GestCodeabstell Scheme 46 is so independent or largely independent of the handling device 40 used.
  • As a movement space for the handling device 40 is basically the entire, occupied in previous rigs from GestCodeabstell Scheme 46 space available.

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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)
EP15150557.5A 2014-01-16 2015-01-09 Installation de forage équipée d'une zone de dépôt de tiges et d'un dispositif de manipulation de tiges et procédé de fonctionnement d'une telle installation de forage Withdrawn EP2896779A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014200748.8A DE102014200748A1 (de) 2014-01-16 2014-01-16 Bohranlage mit einem Gestängeabstellbereich und einer Gestängehandhabungseinrichtung sowie Verfahren zum Betrieb einer solchen Bohranlage

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EP2896779A1 true EP2896779A1 (fr) 2015-07-22

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DE (1) DE102014200748A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109723397A (zh) * 2019-02-27 2019-05-07 上海金泰工程机械有限公司 用于超深作业的双动力头钻具续接结构及钻机

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111720066B (zh) * 2019-03-20 2023-11-03 周兆弟 一种桩机
DE102019206598A1 (de) 2019-05-08 2020-11-12 Bentec Gmbh Drilling & Oilfield Systems Landbohranlage und Verfahren zum Bewegen eines Topdrive in einem Bohrmast einer Landbohranlage

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4744710A (en) 1986-11-24 1988-05-17 Parco Mast And Substructures Drilling derrick with external pipe storage
US20010025727A1 (en) * 1998-08-20 2001-10-04 Byrt Harry F. Hydraulic drilling rig
US6336622B1 (en) * 1997-04-24 2002-01-08 Engineering & Drilling Machinery As Tower
US6412576B1 (en) * 1999-10-16 2002-07-02 William J. Meiners Methods and apparatus for subterranean drilling utilizing a top drive
DE102009043081A1 (de) 2009-09-25 2011-03-31 Max Streicher Gmbh & Co. Kg Aa Bohranlage, Bohrmast, Bohrstangenspeichervorrichtung und Verfahren zum Errichten des Bohrmastes
US20120305261A1 (en) * 2009-12-16 2012-12-06 Itrec B.V. drilling installation
EP2303754B1 (fr) 2008-06-27 2013-08-28 BENTEC GMBH Drilling & Oilfield Systems Treuil de manoeuvre sans engrenage
WO2013168064A2 (fr) * 2012-05-09 2013-11-14 Drillmec S.P.A. Appareil de forage de puits et méthode de montage et de démontage

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4744710A (en) 1986-11-24 1988-05-17 Parco Mast And Substructures Drilling derrick with external pipe storage
US6336622B1 (en) * 1997-04-24 2002-01-08 Engineering & Drilling Machinery As Tower
US20010025727A1 (en) * 1998-08-20 2001-10-04 Byrt Harry F. Hydraulic drilling rig
US6412576B1 (en) * 1999-10-16 2002-07-02 William J. Meiners Methods and apparatus for subterranean drilling utilizing a top drive
EP2303754B1 (fr) 2008-06-27 2013-08-28 BENTEC GMBH Drilling & Oilfield Systems Treuil de manoeuvre sans engrenage
DE102009043081A1 (de) 2009-09-25 2011-03-31 Max Streicher Gmbh & Co. Kg Aa Bohranlage, Bohrmast, Bohrstangenspeichervorrichtung und Verfahren zum Errichten des Bohrmastes
US20120305261A1 (en) * 2009-12-16 2012-12-06 Itrec B.V. drilling installation
WO2013168064A2 (fr) * 2012-05-09 2013-11-14 Drillmec S.P.A. Appareil de forage de puits et méthode de montage et de démontage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109723397A (zh) * 2019-02-27 2019-05-07 上海金泰工程机械有限公司 用于超深作业的双动力头钻具续接结构及钻机
CN109723397B (zh) * 2019-02-27 2023-10-20 上海金泰工程机械有限公司 用于超深作业的双动力头钻具续接结构及钻机

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