US3825076A - Pile mounted drilling rig and method - Google Patents

Pile mounted drilling rig and method Download PDF

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Publication number
US3825076A
US3825076A US00331006A US33100673A US3825076A US 3825076 A US3825076 A US 3825076A US 00331006 A US00331006 A US 00331006A US 33100673 A US33100673 A US 33100673A US 3825076 A US3825076 A US 3825076A
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Prior art keywords
pile
rig
sleeve
drilling
support
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Expired - Lifetime
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US00331006A
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English (en)
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A Kolb
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Brown and Root Inc
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Brown and Root Inc
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Priority to US00331006A priority Critical patent/US3825076A/en
Priority to GB949573A priority patent/GB1397470A/en
Priority to NO794/73A priority patent/NO135679C/no
Priority to NL7303395A priority patent/NL7303395A/xx
Priority to CA188,225A priority patent/CA978762A/en
Application granted granted Critical
Publication of US3825076A publication Critical patent/US3825076A/en
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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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/12—Underwater drilling
    • E21B7/122—Underwater drilling with submersible vertically movable guide
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • 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
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes

Definitions

  • a rig for drilling in a pile projecting from a submerged surface to a location above the surface of a water body includes an elongate derrick operable to support drilling equipment and a deck fixed to the derrick at one end thereof, An elongate open ended sleeve for telescopingly receiving a pile is suspended from the deck. An apertured rig support, fixed to and generally aligned with the sleeve, is engageable with a pile received by the sleeve and provides freestanding support of the rig on the pile.
  • a conduit communicates with the interior of the pile and projects through a sleeve aperture. The conduit provides an outlet for drilling fluid and impedes turning of the rig on the pile.
  • drilling operations have often been performed utilizing drilling rigs carried by a floating vessel or barge.
  • Such techniques may often be suitable; however, they may not be entirely desirable for a number of reasons.
  • the drilling equipment is rendered responsive to wave action induced barge motions which could impede pile drilling operations.
  • a preferred form of theinvention intended to accomplish at least some of the foregoing objects entails a method and apparatus wherein a pile drilling rig is supported on the pile itself during drilling of the borehole at the pile base for purposes of setting the pile.
  • an open-ended tubular projection is suspended from a drilling rig which includes a derrick structure operable to support drilling apparatus.
  • This tubular projection and a-pile projecting-generally upwardly from a submerged surface are telescoped together.
  • the rig is then supported in a free standing manner on the pile telescoped with the tubular projection.
  • the open-ended tubular projection is in the form of elongate sleeve means for telescopingly receiving the pile.
  • Sleeve mounting means which may be in the form of braces, suspend the sleeve means from a deck means which is fixed to the derrick at one end thereof.
  • Free standing support of the rig on the pile is preferably accomplished utilizing an apertured rig support means fixed to and generally aligned with the sleeve means.
  • the apertured rig support means may advantageously constitute an annular plate located at the level of the deck means and gusseted to the sleeve means.
  • the sleeve means includes a wall defining an aperture through which projects a conduit means communicable with the interior of a pile received by the sleeve means.
  • This conduit means provides an outlet for drilling fluid.
  • the conduit means also constitutes torque resistant means for impending turning of the rig on the pile received by the sleeve means.
  • the sleeve means may be provided with annular stabilizing means supported internally of the sleeve means for stabilizing the rig on the telescopingly received pile against substantial lateral movement with respect to that pile.
  • the annular stabilizing means may be in the form of removable shims having an internal diameter appropriately sized with respect to the external diameter of the pile to be received by the sleeve.
  • the rig In order to telescope the sleeve over the pile, the rig may be supported in a generally upright posture by a cable sling. Thereafter the sling supported rig, including the sleeve, is lowered over the pile until the apertured rig support plate engages the upper end of the pile.
  • thederrick means includes lifting eyes and cable retainers adjacent opposite ends thereof.
  • the rig With the rig supported in a freestanding manner on the pile, the rig is isolated from any wave action that might otherwise interfere with drilling operations.
  • a nearby barge may be employed to provide power to the drilling equipment on the rig through various hoses, but only the hoses would be subject to wave induced motion.
  • the derrick may be provided with suitable elevated work platforms if desired, as well as with various drilling tool guides, drilling pipe storage compartments, and primary and/or auxilliary power equipment usually associated with drilling operations.
  • the pile During drilling of the borehole at the pile base, the pile remains in position by reason of the skin friction between the pile and the surrounding submerged ground. After removing the rig from the pile, the pile may be driven into the ground in any suitable manner, and the pile may be permanently set. It is, however, contemplated that underreaming of the pile may be practiced so that the pile, with the rig mounted thereon, penetrates further into the ground during drilling, and is thereafter set.
  • FIG. 1 is a partially completed off-shore platform 12 for use in well drilling operations may be seen.
  • This platform 12 maybe positioned in any suitable manner at its off-shore location.
  • the platform 12 includes a conventional tower structure 13 provided with legs 14 projecting generally upwardly, at an incline, from a submerged surface 16 to a location above the surface 18 of a water body 20. These legs 14 constitute jackets surrounding hollow piles 22 received by the legs and operative to stabilize the platform 12 at its off-shore location.
  • deck sections (not shown) may be provided at the upper end thereof. These deck sections are conventionally associated with legs constituting generally vertical continuation of the inclined legs of the illustrated, partially completed, platform 12. Such vertical .legs maybe joined to the inclined legs illustrated by a miter joint.
  • the piles 22 penetrate beneath the submerged surface 16. However, the piles are not finally set. Operations for subsequent setting of the piles include the drilling of a borehole beneath the open bottom of the hollow piles to accomodate deeper penetration of the piles beneath the submerged surface 16.
  • this is accomplished utilizing a pile drilling rig 24 supported in a freestanding fashion on the pile.
  • the rig 24 is isolated from wave action which might otherwise the construction of completed platform 12 will not always be acceptable for mounting of pile drilling equipment insofar as such decks are, as earlier noted, often associated with generally vertical legs mitered to the inclined legs of the illustrated; partially completed platform.
  • Locating of the pile drilling rig 24 in its position of freestanding support on a pile 22 may be accomplished by lowering of the rig 24 onto the upper pile section projecting above the surface 18 of the water body 20.
  • a crane assembly 26 mounted on a floating barge 28 may be employed for such lowering.
  • a cable sling support 30 for the rig may be suitably connected to the crane assembly 26; and the crane assembly 26 maybe operated to lower the sling supported rig 24 from its full line position, as depicted in FIG. 1, to its inclined dotted line position supported on the pile 22.
  • the crane assembly 26 may be employed to lift, by means of the sling assembly 30, the pile drilling rig 24 from that pile 22. Then the rig 24 may be similarly repositioned above another pile and similarly lowered into its position of freestanding support on that other pile.
  • the barge 28 may be employed to provide power for operations associated with pile drilling operations;
  • Such power sources schematically indicated at 32 in FIG.v 1
  • the cables, hoses, etc. maybe subject to the effects'of barge motion induced by wave action, the drilling rig 24 is essentiallyisolated from those effects.
  • FIGS; 2 through 6 the structure and operation of the drilling rig 24 depicted in FIG. 1 may be more fully appreciated.
  • the rig 24 includes an elongate derrick 36 projecting upwardly from a deck assembly 38 fixed to the derrick 36 at one end thereof.
  • An open ended tubular structure 40 is suspended from the rig.
  • the derrick or mast portion 36 of the rig 24 may be suitably fabricated in any desired length from a .plurality of legs 42 and a network of interconnected structural members 44 forming braces and struts.
  • the illustrated derrick 36 need not be described in detail.
  • reference may be had to Irons et al U.S. Pat. No. 3,539,024 issued have adverse effects on pile drilling operations.
  • the mounting of the rig 24 on the piles enables completion of the pile drilling operations without the need for awaiting construction of'a deck on which pile drilling equipment can be supported at the upper end of the platform 12.
  • the derrick 36 may be connected at one end thereof to the deck assembly 38 in any suitable manner.
  • a crown block assembly 46 is provided at the other end of the derrick.
  • This crown block assembly 46 is employed to mount a fixed pulley or block section 48 in a conventional manner.
  • the fixedblock 48 forms part of a pulley system which also includes a travelling block 50.
  • the travelling block 50 is employed to raise and lower a drill string, schematically indicated in phantom at 52, at desired times.
  • control of movement of the travelling block 50 may be accomplished utilizing a winch, schematically indicated at 54, mounted on the deck assembly 38 and operative to control a cable 56 passing through the crown block assembly 46 and around the fixed pulley 48.
  • a winch schematically indicated at 54
  • FIGS. 5 and 6 the basic structure of the crown block assembly may be seen.
  • the associated pulleys and drilling equipment have been omitted for clarity from these figures, and the derrick structure 36 is shown only partially in FIG. 6.
  • the crown block assembly 46 may be comprised of a plurality of l-beams 58 suitably interconnected to form a generally rectangular framework. These I- beams 58 may be provided with a plurality of apertures 60 spaced about the framework to facilitate bolting of the crown block assembly to the derrick structure 36 at the upper end thereof. The provision for bolting of the crown block assembly to the derrick structure facilitates shifting of the position of that assembly or removal of that assembly if desired.
  • this lowering of the rig ontothe pile 22 is accomplished by forming the previously identified tubular projection 40 as a sleeve for telescopingly receiving a pile 22.
  • the lower end 64 of the sleeve 40 may be generally outwardly flared so as to facilitate guiding of the rig into its position supported on the pile 22 with the pile telescopingly received by the sleeve 40.
  • the sleeve 40 may be suspended from the rig by a suitable number of circumferentially spaced, inclined brace members 66 attached to the deck assembly 38.
  • the suspension of the sleeve 40 from the rig by means of the braces 66 is accomplished so as to align the longitudinal axis of the sleeve 40 with the path of travel of a drill string 52 controlled by the travelling block 50.
  • a drilling bit schematically indicated at 68 in FIG. 2 may be lowered through the pile 22 telescopingly received by the sleeve 40.
  • rotation of the drillstring and the associated drilling bit 68 may be accomplished by utilization of a power swivel 70 suitably con nected to the travelling block 50 as by means of a bracket 72.
  • This power swivel 70 is operative in a known manner to not only rotate the drill string and drilling bit 68 but also to maintain the string 52 and bit 68 at the appropriate inclination aligned with'the inclined pile 22.
  • Drilling fluid and power may be supplied to the drilling equipment through the power swivel 70 by appropriate hoses (not shown in FIG. 2) that may lead'back to the barge 28 as schematically indicated at 34 in FIG. 1.
  • any suitable power swivel 70 may suffice such as the lOO-ton power swivel commercially available from the '40 includes an aperture 78 in its wall, and a conduit 80 passing through this aperture is connected in any suitable manner to the pile 22 so as to communicate with the internal portion thereof.
  • This conduit 80 may be employed as an outlet for drilling fluid, which outlet may be directly to the water body 20 or may be suitable connected by flexible hoses or the like to any desired disposal equipment.
  • the generally rigid conduit 80 provides the torque resistance impending turning of the rig on the pile.
  • the present invention embraces the use of a non-rotating drill string.
  • turbine drilling or jetting may be employed.
  • drilling apparatus employing an hydraulic jetting and air lift principle may be utilized.
  • jetting nozzles may be disposed in an annular fashion radially outward of the apertures providing for air lift.
  • the drilling apparatus utilized in the jetting and air lift apparatus may include circumferentially disposed, projecting teeth to aid in breaking up the ground material upon the application of vertically recipricatory and/or rotational forces to the apparatus.
  • the sleeve 40 may include stabilizers in the form of annular shims 82 for stabilizing the rig on the received pile against substantial lateral movement with respect to the pile 22.
  • These shims 82 are sized to have an internal diameter slightly greater than the external diameter of the pile 22 and, preferably, may-be removed and replaced with other appropriately sized shims for accomodating piles 22 of other external diameters.
  • the freestanding support of the rig 24'on the pile 22 is accomplished by engagement of the pile 22 with rig support means.
  • this rig support means is in the form of an annular plate 84 attached to the sleeve 40.
  • the central aperture in the annular plate 84 has a diameter substantially equal to the internal diameter of the pile 22 so that the plate may rest fully on the pile as indicated at 86 in FIG.'4.
  • Securing of the plate 84 to the tubular sleeve 40 may be accomplished by a plurality of circumferentially spaced gussets 88 as may be seen in FIG. 2.
  • the plate 84 resting on the pile 22 bears essentially the entire weight of the pile drilling rig 24 and its associated equipment, with force being advantageously transmitted to the pile receiving sleeve 40 through the gussets 88 and to the deck assembly 38 through the braces 66.
  • the deck assembly 38 may be comprised of a plurality of suitably interconnected I-beams 90 forming a network having a generally rectangular boundary and emanating from a central portion at which the sleeve 40 and plate 84 are located.
  • a fence like structure 92 comprised of a plurality of handrails and stanchions.
  • a suitable platform floor 94 (omitted in FIG. 3 for clarity) is provided for walking area.
  • the deck assembly may support conventional air tuggers, schematically shown at 96 in FIG. 3, for use in connection with operating the power swivel 70 and for handling pipe sections for the drill string.
  • a suitablepipe rack 98 for storage of drill string pipe may also be provided.
  • the deck may also support a suitable slip assembly 100 (see FIG. 2) to facilitate adding of pipe sections to the drill string.
  • connection and disconnection of pipe sections may be accomplished in a conventional manner.
  • the rig 24 is positioned on the pile 22 with a sufficient amount of pipe in the rack 98 to facilitate drilling. After completion of drilling of the borehole at the base of the pile, the rig may be removed and the pile may be driven and set in any suitable manner.
  • elongate derrick means operable to support drilling means
  • apertured rig support means fixed to and generally aligned with said sleeve means, for engaging a pile received by said sleeve means and providing freestanding support of said rig on the pile.
  • said sleeve means includes annular stabilizing means supported internally of said sleeve means for stabilizing said rig on a pile received by said sleeve means against substantial lateral movement with respect to the pile.
  • said apertured rig support means is located adjacent said deck means, and said sleeve mounting means comprises:
  • brace means operable to transmit force to said deck means. 4.
  • said apertured rig support means is gusseted to said sleeve means.
  • elongate derrick means operable to support drilling means
  • apertured rig support means fixed to and generally aligned with said sleeve means, for engaging a pile received by said sleeve means and providing freestanding support of said rig on the pile;
  • said sleeve means including a wall defining an aperture
  • the'rig further including: conduit means communicable with the interior of a pile received by said sleeve means and projecting through said aperture defined by said sleeve means wall,
  • conduit means providing an; outlet for drilling fluid and constituting torque resistant means for impending turning of said rig on a pile received by said sleeve means.
  • said sleeve means -includes annular stabilizing means supported internally of said sleeve means for stabilizing said rig on a pile received by said sleeve means against substantial lateral movement with respect to the pile.
  • elongate derrick means operable to support drilling means
  • apertured rig support means fixed to and generally aligned with said sleeve means, for engaging a pile received by said sleeve means and providing freestanding support of said rig on the pile;
  • said derrick means including means adjacent opposite ends thereof for receiving rig lifting cables in a sling arrangement.
  • a cable sling comprised of rig lifting calbes extending between locations adjacent opposite ends of the derrick means, and I lowering the slong supported rig, including the sleeve means, over'the pile until the rig support means engages the pile.
  • Apparatus for drilling in a pile projecting from a submerged surface to a location above the surface of a water body comprising:
  • floating vessel means supporting power supply means and 1 a drilling rig including:
  • elongate derrick means operable to support drilling means powered by said power supply means; deck means fixed to said derrick means at one end thereof; elongate, open ended, tubular projection means for telescoping together with a pile; sleeve mounting means for suspending said sleeve means from said rig; and rig support means, generally aligned with said tubular projection means, for engaging a pile and providing freestanding support of said rig on the pile telescoping the tubular projection and one of the piles together;
  • a rig for'drilling in a pile projecting from a submerged surface comprising:
  • elongate derrick means operable to support drilling means
  • rig support means engageable with the pile telescoped together with the tubular projection, for supporting the rig on the pile in a freestanding manner.
  • a rig according to claim 16 including:
  • conduit means communicable with the interior of a pile telescoped together with said tubular projection, l
  • conduit means providing a passage for drilling fluid and constituting torque resistant means for impeding turning of the rig on a pile telescoped together with said tubular projection.
  • a rig according to claim 16 including:
  • a cable sling comprised of rig lifting cables extending between locations adjacent opposite ends of the derrick means, and lowering the sling supported rig, including the tubular projection, until the rig support means engages the pile.
  • FIGURE 1 shows a barge disposed adjacent to a partially completedoffshore platform with a pile drilling rig suspended above the r platform, the rig also being shown in dash lines in position and supported by a pile;
  • FIGURE 2 illustrates the pile drilling rig of FIGURE 1 on a larger scale
  • FIGURE 3 is a view taken along line 3-3 of FIGURE 2 showing the annular rig support plate
  • FIGURE 4 is a view taken along line 44 of FIGURE 3 illustrating support of the rig on a pile:
  • FIGURE 5 is a view taken along line 5-5 of FIGURE 2 depicting the crown block assembly of the rig; and 5 FIGURE 6 is a view taken along line 6-6 of FIGURE 5 showing a portion of the structural network of the mast portion of the rig.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Civil Engineering (AREA)
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US00331006A 1973-02-09 1973-02-09 Pile mounted drilling rig and method Expired - Lifetime US3825076A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US00331006A US3825076A (en) 1973-02-09 1973-02-09 Pile mounted drilling rig and method
GB949573A GB1397470A (en) 1973-02-09 1973-02-27 Pile mounted drilling rig and method
NO794/73A NO135679C (enrdf_load_stackoverflow) 1973-02-09 1973-02-27
NL7303395A NL7303395A (enrdf_load_stackoverflow) 1973-02-09 1973-03-09
CA188,225A CA978762A (en) 1973-02-09 1973-12-14 Pile mounted drilling rig and method

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US00331006A US3825076A (en) 1973-02-09 1973-02-09 Pile mounted drilling rig and method

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US3825076A true US3825076A (en) 1974-07-23

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US00331006A Expired - Lifetime US3825076A (en) 1973-02-09 1973-02-09 Pile mounted drilling rig and method

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US (1) US3825076A (enrdf_load_stackoverflow)
CA (1) CA978762A (enrdf_load_stackoverflow)
GB (1) GB1397470A (enrdf_load_stackoverflow)
NL (1) NL7303395A (enrdf_load_stackoverflow)
NO (1) NO135679C (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3961673A (en) * 1974-04-02 1976-06-08 Maschinen- Und Bohrgerate-Fabrik Alfred Wirth & Co., K.G. Drilling apparatus
US4084385A (en) * 1976-08-02 1978-04-18 Varco International, Inc. Pile handing methods
US4144940A (en) * 1977-02-07 1979-03-20 Ortemund Leon D Method and apparatus for installing an offshore pile driving rig
US20100178114A1 (en) * 2009-01-12 2010-07-15 Reeves William W Modular foundation designs and methods
CN103938629A (zh) * 2014-04-02 2014-07-23 宁波鸿晨建设有限公司 加压式长螺旋钻孔桩机及利用该桩机钻孔的方法
CN107470860A (zh) * 2017-07-17 2017-12-15 南通蓝岛海洋工程有限公司 一种海上升压站下部组件的建造工艺
US20180099843A1 (en) * 2016-10-07 2018-04-12 Zentech, Inc. Drilling, plug, abandonment, and decommissioning
CN109025807A (zh) * 2018-08-20 2018-12-18 中水电第十工程局（郑州）有限公司 一种旋挖钻机在地质复杂地层钻进的施工方法
CN109083146A (zh) * 2017-06-13 2018-12-25 日本车辆制造株式会社 打桩机的立柱和斜撑的竖立设置方法

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RU2171349C1 (ru) * 2000-08-24 2001-07-27 Государственное геологическое предприятие "Южное научно-производственное объединение по морским геологоразведочным работам" (ГГП НПО "ЮЖМОРГЕОЛОГИЯ") Способ монтажа и стабилизации морского бурового одноколонного основания и устройство для его осуществления
RU2245436C2 (ru) * 2002-12-17 2005-01-27 Государственный научный центр-Федеральное государственное унитарное геологическое предприятие "Южное научно-производственное объединение по морским геологоразведочным работам" (ГНЦ ГГП НПО "ЮЖМОРГЕОЛОГИЯ") Способ и устройство для стабилизации одноколонного основания и бурения с него на море
RU2250976C1 (ru) * 2003-10-23 2005-04-27 Государственный научный центр - государственное унитарное геологическое предприятие "Южное научно-производственное объединение по морским геологоразведочным работам" (ГНЦ ФГУГП "ЮЖМОРГЕОЛОГИЯ") Морское буровое одноколонное трубчатое основание свайного типа
RU2278943C2 (ru) * 2004-04-05 2006-06-27 Государственный научный центр - государственное унитарное геологическое предприятие "Южное научно-производственное объединение по морским геологоразведочным работам" (ГНЦ ФГУГП "ЮЖМОРГЕОЛОГИЯ") Способ монтажа и стабилизации бурового моноопорного основания на дне моря и устройство для осуществления способа

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3961673A (en) * 1974-04-02 1976-06-08 Maschinen- Und Bohrgerate-Fabrik Alfred Wirth & Co., K.G. Drilling apparatus
US4084385A (en) * 1976-08-02 1978-04-18 Varco International, Inc. Pile handing methods
US4144940A (en) * 1977-02-07 1979-03-20 Ortemund Leon D Method and apparatus for installing an offshore pile driving rig
US20100178114A1 (en) * 2009-01-12 2010-07-15 Reeves William W Modular foundation designs and methods
US8215874B2 (en) * 2009-01-12 2012-07-10 Reeves William W Modular foundation designs and methods
US20120275866A1 (en) * 2009-01-12 2012-11-01 Reeves William W Modular foundation designs and methods
US8529158B2 (en) * 2009-01-12 2013-09-10 William W. Reeves Modular foundation designs and methods
CN103938629B (zh) * 2014-04-02 2016-01-20 宁波鸿晨建设有限公司 加压式长螺旋钻孔桩机及利用该桩机钻孔的方法
CN103938629A (zh) * 2014-04-02 2014-07-23 宁波鸿晨建设有限公司 加压式长螺旋钻孔桩机及利用该桩机钻孔的方法
US20180099843A1 (en) * 2016-10-07 2018-04-12 Zentech, Inc. Drilling, plug, abandonment, and decommissioning
CN109083146A (zh) * 2017-06-13 2018-12-25 日本车辆制造株式会社 打桩机的立柱和斜撑的竖立设置方法
CN109083146B (zh) * 2017-06-13 2021-04-02 日本车辆制造株式会社 打桩机的立柱和斜撑的竖立设置方法
CN107470860A (zh) * 2017-07-17 2017-12-15 南通蓝岛海洋工程有限公司 一种海上升压站下部组件的建造工艺
WO2019015260A1 (zh) * 2017-07-17 2019-01-24 南通蓝岛海洋工程有限公司 一种海上升压站下部组件的建造工艺
CN107470860B (zh) * 2017-07-17 2019-05-21 南通蓝岛海洋工程有限公司 一种海上升压站下部组件的建造工艺
CN109025807A (zh) * 2018-08-20 2018-12-18 中水电第十工程局（郑州）有限公司 一种旋挖钻机在地质复杂地层钻进的施工方法

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