CN102505918A - Rotary dragging reaming device - Google Patents

Rotary dragging reaming device Download PDF

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Publication number
CN102505918A
CN102505918A CN2011103510464A CN201110351046A CN102505918A CN 102505918 A CN102505918 A CN 102505918A CN 2011103510464 A CN2011103510464 A CN 2011103510464A CN 201110351046 A CN201110351046 A CN 201110351046A CN 102505918 A CN102505918 A CN 102505918A
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China
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connector
reamer
mud
pipe
drill
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CN2011103510464A
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Chinese (zh)
Inventor
祝效华
蒋俊
贾彦杰
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西南石油大学
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Application filed by 西南石油大学 filed Critical 西南石油大学
Priority to CN2011103510464A priority Critical patent/CN102505918A/en
Publication of CN102505918A publication Critical patent/CN102505918A/en

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Abstract

The invention relates to a rotary dragging reaming device which can accomplish reaming and pipe back dragging processes in one step in horizontal directional crossing constructions. The rotary dragging reaming device employs a technical scheme as follows: the rotary dragging reaming device mainly comprises a drill stem, a bearing group, a reamer, a connector, and the like, wherein the front end of the reamer is in threaded connection with the drill stem, and the rear end of the reamer is in clearance fit with the connector; a rib plate is arranged in the connector, and assembled together with the drill stem through the bearing group; an outer shell and an inner shell are arranged at the rear end of the connector, and are connected with a product pipe and a debris discharge pipe through fastening devices respectively; hollowed-out long holes and cutting teeth are arranged on the cutting surface of the reamer; mud nozzles are formed on the cutting surface and the rear end face of the reamer; annular debris flow enters the inside of the connector through the hollowed-out long holes, and then is discharged to a mud sump through the debris discharge pipe. The rotary dragging reaming device disclosed by the invention can avoid hole collapse caused by large diameter ratio of a pre-reamed hole to the pipe, realize accurate mounting of product pipes, reduce back dragging force, save construction time and cost, and protect the environment.

Description

一种旋转拖拉扩孔装置 A rotary drag device reaming

技术领域 FIELD

[0001 ] 本发明涉及一种用于水平定向穿越施工中,一次性完成扩孔和管道回拖两个工艺的旋转拖拉扩孔装置。 [0001] The present invention relates to a method for horizontal directional crossing construction and completion of one rotation of the reamer and pipeline drag pullback means two reaming process.

背景技术 Background technique

[0002] 非开挖技术是指在不开挖或少开挖地表的条件下进行铺设、更换或修复各种地下管线的施工新技术,国外称TTCTrenchless Technology)或Ν-Dig,是钻探工程的一项重要的组成部分。 [0002] trenchless technology is laying under the ground without excavation or less excavation, replacement or repair of all kinds of underground pipeline construction technology, said the foreign TTCTrenchless Technology) or Ν-Dig, a drilling project an important part. 作为一项新兴的管道非开挖施工技术,定向钻穿越以其精确导向、施工周期短、综合效率高等众多优势,在天然气等相关行业管道线路施工中获得了广泛应用。 As an emerging pipeline trenchless construction technology, directional drilling crossing its precise orientation, short construction period, higher overall efficiency many advantages, has been widely used in natural gas and other related industries in the pipe line construction. 定向钻进技术作为一种优先选择的非开挖施工技术,具有以下特点:(1)对交通、环境的破坏及干扰小;(2)几乎可全天候施工,施工安全、高效;(3)效率高,综合成本低,工时少;(4)对施工场地要求高,砾石层施工困难。 Directional Drilling as trenchless technique for preference, has the following characteristics: (1) small traffic, interference and damage to the environment; (2) almost all-weather construction, construction safety, efficiency; (3) Efficiency high and low overall cost, less work; (4) high requirements on the construction site, construction difficulties gravel. 它广泛应用于穿越河流和水渠、街道、高速公路、铁路、机场跑道、海滩、岛屿、建筑物拥挤的地方、管线通道和运河等的石油、天然气、自来水、污水及其它流体的管线铺设和电力与电讯电缆的导管铺设等场合。 It is widely used across the rivers and canals, streets, highways, railways, airport runways, beaches, islands, building a crowded place, such as pipeline channel and canals of oil, natural gas, water, sewage and other fluid pipeline laying and electricity and duct laying telecommunications cables and other occasions.

[0003] 在常规的水平定向穿越中一般都要进行多次扩孔,最终所扩的孔径一般要达到产品管道外径的1. 5倍(如当产品管道外径为30寸时,采用常规扩孔就需要所扩的最终孔径为45寸),所以需要进行多次扩孔,当孔径过大时容易造成孔内坍塌,使孔内堆积岩土形成卡钻等复杂情况,妨碍进一步施工,甚至有可能让前期施工完全报废,卡钻后需要多次洗孔,既浪费时间又增加施工成本。 [0003] generally have multiple reaming in a conventional horizontal directional cross, the final expansion of the pore size is generally 1.5 times to reach the outer diameter of pipe product (e.g., when the product pipe diameter of 30 inches, using a conventional reaming the need to expand the final aperture 45 inches), so the need for reaming a plurality of times, when the hole diameter is too large likely to cause collapse of the hole accumulation Rock drilling a complicated situation cards, impede further construction, there may even make pre-construction completely scrapped, requiring multiple wash hole after sticking, waste of time and increased construction costs. 另外,在管道回拖时由于浮力作用产品管道会上浮,当浮力很大时管道和孔壁产生很大的摩擦,阻碍管道回拖的同时,也会影响孔壁稳定。 In addition, due to the buoyancy product pipeline will go up, when the buoyancy of the pipe is large and have a huge hole wall friction in the pipe pullback, hinder pipeline pullback, it would also affect the stability of the cell wall.

[0004] 采用常规扩孔工艺时,由于扩孔器和钻杆的自重,将导致孔径线下沉,最终造成成孔形状变为鸭梨形,管道回拖轨迹和初始设计孔眼轨迹相差很大,不能保证产品管道和所设计孔有较好的对中性。 [0004] When using a conventional reaming process, since the weight of the drill and the reamer will cause subsidence aperture lines, eventually leading to a pear-shaped hole shape becomes, and the track pipe pullback trajectory initial design eyelet big difference , can not guarantee product pipeline and design hole has a good neutral. 通常,带切屑的泥浆都是通过钻杆和孔壁之间的外环空进行泥浆外排,很难用专用回收装置来回收泥浆,因此造成环境污染。 Typically, the mud with cuttings are performed by the outer annulus between the drill pipe and the mud hole wall efflux, it is difficult to recover a dedicated recovery slurry, thus causing environmental pollution.

发明内容 SUMMARY

[0005] 本发明的目的是:为解决大口径定向穿越易塌孔、回拖摩擦阻力大和泥浆外排污染环境等问题,特提出一种扩孔和管道回拖两个工艺一次性完成的旋转拖拉扩孔装置。 [0005] The object of the present invention is: directed to solve the large-diameter through hole collapse easily, and the frictional resistance pullback mud efflux environment pollution, rotating one kind proposed Laid reaming process and two pipe pullback one process drag reaming apparatus.

[0006] 为了达到上述目的,本发明解决此技术问题采用的技术方案是:一种旋转拖拉扩孔装置,主要包括钻杆1、扩孔器3、轴承组6和连接器5 ;扩孔器3包括集流腔18、连接面板11、镂空长孔10、切削齿9、磨损衬垫对、泥浆通道25、径向泥浆喷口沈和轴向泥浆喷口12 ; 连接器5包括连接器外壳体30、连接器内壳体22、肋板17、轴承座31、密封垫片32、密封圈19和端盖16 ;其特征是:钻杆1末端安装有轴承组6,在钻杆内腔四末端处的钻杆壁上有交错排列的泥浆孔27 ;扩孔器前端2和钻杆1通过螺纹观连接在一起,扩孔器后端4与连接器5间隙配合,可相互转动,扩孔器后端4与连接器5配合段之间有磨损衬垫M ;连接器5内置肋板17,肋板17焊接在连接器5内;连接器5通过肋板17、轴承座31与轴承组6装配在钻杆1上,轴承组6靠端盖16、轴肩21和螺母23固定,端盖16由螺栓组14固定 Technical Solution [0006] To achieve the above object, the present invention solves this technical problem is that: a rotary drag reaming apparatus includes a drill, reamer 3, the bearing 5 and the connector 6 groups; reamer 3 includes a manifold 18, connecting panel 11, the hollow elongate hole 10, cutting teeth 9, wear pads pair, mud channel 25, the radial and axial heavy mud slurry nozzle spout 12; 5 connector includes a connector housing 30 , the connector housing 22, ribs 17, bearing housing 31, seal 32, seal 19 and end cap 16; characterized in that: the end of the drill pipe 1 is attached to the bearing set 6, four drill tip in the lumen at a mud wall drill hole are staggered 27; distal reamer 2 and the rod 1 are connected together by a screw concept, the rear end of the reamer mating connector 4 gap 5, mutually rotatable, reamers M between the rear wear pads 4 and 5 the connector mating section; built-in connector 5 rib 17, rib 17 welded to the connector 5; 5 via a connector rib 17, bearing 31 and the bearing 6 group mounted on the drill pipe 1, the end cap 16 against the bearing set 6, the shoulder 21 and the nut 23 is fixed, the end cap 16 is fixed by a set screw 14 在轴承座31上;端盖16和钻杆1之间由密封圈19密封、端盖16和轴承座31之间由密封垫片32密封;连接器后端15有连接器外壳体30和连接器内壳体22,分别通过扣紧装置20与产品管道7和排屑管道8相连,扣紧装置20采用螺栓或者销结构,排屑管道8从产品管道7 内部通过;扩孔器3切削面上有径向泥浆喷口沈、扩孔器后端4有轴向泥浆喷口12、壳体内有泥浆通道25,钻杆内腔四、泥浆孔27、集流腔18、泥浆通道25与径向泥浆喷口沈和轴向泥浆喷口12形成的通道连接内外环空。 On the bearing block 31; and the drill pipe 16 between the end cap 32 is sealed by a sealing gasket 31 between the seal ring 19, cover 16 and housing; a connector 15 with a rear end of the connector housing 30 and connector inner housing 22, 20 are connected to the product pipe 7 and a pipe 8 through the chip fastening means, the fastening means using a bolt or pin structure 20, from the inside of chip discharge pipe 8 through the product pipe 7; reamer cutting face 3 the radial orifices mud sink 4 with an axial rear end of the reamer mud spout 12, there is the mud channel 25, four drill lumen within the housing, the mud-hole 27, manifold 18, and radially mud mud channel 25 Shen and spout passage 12 formed axially connected to the mud inside and outside the nozzle annulus. 扩孔器3切削面上每一个列组设置径向泥浆喷口沈有4〜6个,其中每一个列组对应的连接面板11上设置径向泥浆喷口沈的数量为1〜 2个。 3 reamer cutting face disposed radially each column group has 4 ~ 6 a mud sink spout, provided the number of radial orifices slurry sink 1 ~ 2 to 11 wherein each column group corresponding to the connection panel.

[0007] 本发明的主要优点:①可以确保产品管道的安装精度;②用本装置进行水平定向穿越施工可以缩短施工时间和节约施工成本,特别是对于大口径的管道施工可以缩短一半的工期;③可以通过排屑管道收集携带岩屑的泥浆,起到保护环境的作用。 The main advantages of the [0007] present invention: ① the can ensure that the installation accuracy of the product pipe; ② performed with the present apparatus horizontally oriented crossing construction can shorten the construction time and save construction cost, especially for pipeline construction of large diameter can be shortened half period; ③ carry cuttings slurry can be collected by chip removal pipe, serve to protect the environment.

附图说明 BRIEF DESCRIPTION

[0008] 图1是本发明一种旋转拖拉扩孔装置的安装示意图; 图2是本发明一种旋转拖拉扩孔装置的外观图; [0008] FIG. 1 is a schematic view of the present invention for mounting a rotary drag reaming apparatus; FIG. 2 of the present invention is an external view of a rotary drag reaming device;

图3是本发明一种旋转拖拉扩孔装置的扩孔器前视图; 图4是本发明一种旋转拖拉扩孔装置的剖视图。 FIG 3 is a front invention A rotary drag device reamer reaming view; FIG. 4 is a cross-sectional view of present invention provides a rotary drag device reaming.

[0009] 图中:1.钻杆,2.扩孔器前端,3.扩孔器,4.扩孔器后端,5.连接器,6.轴承组, 7.产品管道,8.排屑管道,9.切削齿,10.镂空长孔,11.连接面板,12.轴向泥浆喷口, 13.泥浆流向箭头,14.螺栓组,15.连接器后端,16.端盖,17.肋板,18.集流腔,19.密封圈,20.扣紧装置,21.轴肩,22.连接器内壳体,23.螺母,24.磨损衬垫,25.泥浆通道, 26.径向泥浆喷口,27.泥浆孔,28.螺纹,29.钻杆内腔,30.连接器外壳体,31.轴承座, 32.密封垫片。 [0009] FIG.:....... A drill pipe, distal reamer 2, 3 reamers, reamer rear end 4, the connector 5, 6 bearing set, the product pipe 7, 8 rows cuttings pipe 9. The cutting teeth 10. long hollow hole 11 connected to panel 12. spout axially mud, mud flow arrows 13, 14. bolt group, 15 connected to the rear end, 16 cover, 17 . rib, 18 manifold 19. seals, 20. the fastening means 21 shoulder, 22 within the connector housing 23 nut, 24 wear pad 25. mud channel, 26 radial mud spout 27. mud hole 28 threaded, 29 drill rod lumen 30 of the connector housing body 31 bearing seat 32. A sealing gasket.

具体实施方式 Detailed ways

[0010] 按照图1〜图4所示,一种旋转拖拉扩孔装置,主要包括钻杆1、扩孔器3、轴承组6和连接器5 ;扩孔器3包括集流腔18、连接面板11、镂空长孔10、切削齿9、磨损衬垫24、 泥浆通道25、径向泥浆喷口沈和轴向泥浆喷口12 ;连接器5包括连接器外壳体30、连接器内壳体22、肋板17、轴承座31、密封垫片32、密封圈19和端盖16 ;其特征是:钻杆1末端安装有轴承组6,在钻杆内腔四末端处的钻杆壁上有交错排列的泥浆孔27 ;扩孔器前端2和钻杆1通过螺纹观连接在一起,扩孔器后端4与连接器5间隙配合,可相互转动;扩孔器后端4与连接器5配合段之间有磨损衬垫M,可以有效阻止内外的泥浆在扩孔器3和连接器5之间的缝隙流动,并且能够有效缓解扩孔器3和连接器5在相对转动时的磨损。 [0010] According to FIG. 1 ~ FIG. 4, a rotary drag reaming apparatus includes a drill, reamer 3, the bearing 5 and the connector 6 groups; reamer 3 comprises a manifold 18, connected panel 11, the hollow elongate hole 10, cutting teeth 9, wear pad 24, the mud channel 25, the radial and axial heavy mud slurry nozzle spout 12; connector 5 comprises a body 30 within the connector housing, the connector housing 22, ribs 17, chock 31, seal 32, seal 19 and end cap 16; characterized in that: the end of a drill pipe group 6 is attached to a bearing, the wall of the drill rod at the end of the lumen has a four interleave mud hole arrangement 27; distal reamer 2 and the drill pipe 1 by screwing together concept, the rear end of the reamer mating connector 4 gap 5, mutually rotatable; reamer rear end 4 mating with the connector 5 between wear liner segments M, can effectively prevent the flow of mud inside and outside the gap between the connector 3 and the reamer 5, and the wear of the reamer can effectively alleviate the connector 3 and 5 at the time of relative rotation. 连接器5 内置肋板17,肋板17焊接在连接器5上;连接器5通过肋板17、轴承座31与轴承组6装配在钻杆1上,轴承组6由端盖16、轴肩21及螺母23固定,端盖16通过螺栓组14固定轴承座31上;端盖16和钻杆1之间由密封圈19密封、端盖16和轴承座31之间由密封垫片32 密封,以防止返回泥浆中的岩屑颗粒加速轴承磨损;连接器后端15有连接器外壳体30和连接器内壳体22,分别通过扣紧装置20与产品管道7和排屑管道8相连,扣紧装置20采用螺栓或者销结构,排屑管道8从产品管道7内部通过;扩孔器3切削面上有径向泥浆喷口26、 扩孔器后端4有轴向泥浆喷口12、壳体内有泥浆通道25 ;钻杆内腔四、泥浆孔27、集流腔18、泥浆通道25与径向泥浆喷口沈或轴向泥浆喷口12形成的通道连接内外环空。 Built-in connector 5 rib 17, rib 17 welded to the connector 5; 5 via a connector rib 17, bearing 31 and the bearing 6 fitted on the drill pipe group 1, group 6 of the bearing cap 16, the shoulder 21 and the nut 23 is fixed to the end cap 14 is fixed to the bearing housing 16 by set screws 31; between the end cap 16 and the sealing ring 19 by the drill pipe 1, the end cap 32 by a seal between the gasket 16 and housing 31, to prevent the return of debris particles in the slurry accelerated bearing wear; rear end of the connector body 15 has a connector housing 30 and the connector housing 22, the fastening means 20 are connected through the product pipe 7 and conduit 8 chip, deduction gripping means 20 with bolts or pin structure, chip inside the product conduit 8 via conduit 7; mud radial orifices 263 reamer cutting face, a rear end 4 with an axial reamer mud spout 12, the inner housing having mud channel 25; four lumen drill mud hole 27, manifold 18, the mud channel passage 25 is connected to the radial or axial sink mud slurry nozzle orifices 12 formed in the inner and outer annulus.

[0011] 在保证扩孔器3安全可靠的条件下,喷出充足的携岩流体,需在切削面上每一个列组设置径向泥浆喷口沈的数量应为4〜6个,其中连接面板11上径向泥浆喷口沈的数量为1〜2个。 [0011] In the reamer to ensure safe and reliable condition 3, the discharge fluid carrying cuttings sufficient, set the number of heavy mud radial orifices should be 4 ~ 6 in a cutting face each column group, wherein the connection panel the number of radial orifices mud sink 11 is 1 ~ 2. 为了使钻杆1有足够的强度,在钻杆1上开设的泥浆孔27应交错排列。 In order to have a sufficient strength of the drill pipe, the drill pipe 1 defines the mud hole 27 should be staggered.

[0012] 扩孔器3切削面上均勻分布镂空长孔10、连接面板11、切削齿9和径向泥浆喷口沈,扩孔器后端4有轴向泥浆喷口12 ;扩孔器3壳体内分布着泥浆通道25,连通径向泥浆喷口沈和轴向泥浆喷口12。 [0012] The cutting surface of the reamer is evenly distributed hollow elongate hole 10, connecting panel 11, radial cutting teeth 9 and mud spout sink 4 with an axial rear end of the reamer mud spout 12; 3 inner casing reamer distribution of the mud channel 25 communicating radial and axial heavy mud slurry nozzle spout 12. 从地面泵入的泥浆经过钻杆内腔四、泥浆孔27、集流腔18和扩孔器3中的泥浆通道25,最终通过径向泥浆喷口沈和轴向泥浆喷口12喷出,泵入的泥浆流向如图中泥浆流向箭头13。 After four lumen drill pipe, mud hole 27, manifold 18 and reamer mud channel 325, and ultimately discharged from the pump into the ground slurry by radial and axial heavy mud slurry spout nozzle 12, pumped mud flowing mud flow arrows 13 in FIG. 从径向泥浆喷口沈喷出的泥浆主要对扩孔器切削齿9进行清洗,防止产生泥包,并携带岩屑;从轴向泥浆喷口12喷出的泥浆为产品管道7提供浮力、润滑孔道和平衡地层压力。 Shen discharge spout radially mud slurry mainly broach cutting teeth 9 for cleaning, to prevent balling, and carry cuttings; axially from the mud slurry to the discharge spout 12 the product conduit 7 provide buoyancy, lubrication bore and balance the formation pressure. 带切屑的泥浆通过镂空的长孔10进入扩孔器3,并通过连接器5、 排屑管道8排到地面泥浆池,实现管内排屑。 Mud with cuttings by a long hole 10 into the hollow reamer 3, and 5, the chip surface mud tank conduit 8 is discharged through the connector for a chip inner tube.

Claims (4)

1. 一种旋转拖拉扩孔装置,主要包括钻杆(1)、轴承组(6)、扩孔器(3)和连接器(5);扩孔器(3)包括集流腔(18)、连接面板(11)、镂空长孔(10)、切削齿(9)、磨损衬垫(24)、泥浆通道(25)、径向泥浆喷口(26)和轴向泥浆喷口(12);连接器(5)包括连接器外壳体(30)、连接器内壳体(22)、肋板(17)、轴承座(31)、密封垫片(32)、密封圈(19)和端盖(16);其特征是:钻杆(1)末端安装有轴承组(6),钻杆内腔(29)末端处的钻杆壁上有交错排列的泥浆孔(27);扩孔器前端(2)和钻杆(1)通过螺纹(28)连接在一起,扩孔器后端(4)与连接器(5) 间隙配合,可相互转动;连接器(5)内置肋板(17),肋板(17)焊接在连接器5内;连接器(5) 通过肋板(17)、轴承座(31)与轴承组(6)装配于钻杆(1)上,轴承组(6)靠端盖(16)、轴肩(21)和螺母(23)固定,端盖(16)由螺栓组(14) A rotary drag reaming apparatus, including drill pipe (1), of bearings (6), reamer (3) and the connector (5); reamer (3) comprises a manifold (18) connecting panel (11), a hollow elongate hole (10), the cutting teeth (9), the wear pad (24), the mud channel (25), radially slurry nozzle (26) and the axial mud spout (12); a connector (5) a connector housing comprising a body (30), the connector housing (22), the ribs (17), the bearing block (31), gasket (32), the sealing ring (19) and end cap ( 16); characterized in that: the drill pipe (1) is attached to the end of bearing sets (6), the drill interior (29) at the end wall of the drill mud are staggered hole arrangement (27); distal reamer ( 2) and drill pipe (1) by a threaded connection (28) together, the rear end of the reamer (4) and the connector (5) clearance fit, mutually rotatable; a connector (5) built-in rib (17), ribs (17) welded within the connector 5; a connector (5) by a rib (17), bearing (31) and the bearing group (6) is attached to the drill pipe (1), of bearings (6) against the end cap (16), the shoulder (21) and the nut (23) is fixed, the end cap (16) by a set of bolts (14) 固定在轴承座(31)上;端盖(16)和钻杆(1)之间由密封圈(19)密封、端盖(16)和轴承座(31)之间由密封垫片(32)密封;连接器后端(15)有连接器外壳体(30)和连接器内壳体(22),分别通过扣紧装置(20)与产品管道(7)和排屑管道(8)相连,排屑管道(8)从产品管道(7)内部通过;扩孔器后端(4)有轴向泥浆喷口(12),扩孔器(3)切削面上有径向泥浆喷口(26)、壳体内有泥浆通道(25),钻杆内腔(29)、泥浆孔(27)、集流腔(18)、泥浆通道(25)与径向泥浆喷口(26)和轴向泥浆喷口(12) 形成的通道连接内外环空。 Fixed to the bearing housing (31); between the end cap (16) and drill pipe (1) by a seal (19) sealing the end cap (16) and housing (31) by a gasket (32) seal; rear connector (15) has a connector housing (30) and the inner connector housing (22), respectively, and the product pipe (7) and a chip discharge duct (8) connected via fastening means (20), chip discharge pipe (8) from the product pipe (7) through the interior; reamer rear end (4) has an axial mud spout (12), there is (3) a reamer cutting face radially slurry nozzle (26), there mud channel (25), the drill interior (29), the mud (27), the manifold (18), the mud channel (25) radially mud spout (26) and the axial mud spout (within the housing 12 ) is connected to the channel forming the inner and outer annulus.
2.根据权利要求1所述的旋转拖拉扩孔装置,其特征在于:扩孔器(3)切削面上每一个列组设置径向泥浆喷口(26)4〜6个,其中每一个列组相对应的连接面板(11)上有径向泥浆喷口(26)的数量为1〜2个。 2. The rotary drag reaming apparatus according to claim 1, characterized in that: (3) each of the reamer cutting face disposed radially mud orifice column group (26) a 4 ~ 6, wherein each column group have the corresponding connecting panel (11) the number of radial orifices slurry (26) is 1 ~ 2.
3.根据权利要求1所述的旋转拖拉扩孔装置,其特征在于:扩孔器后端(4)与连接器(5)配合段之间有磨损衬垫(24)。 3. The rotary drag reaming apparatus according to claim 1, wherein: wear pad (24) between the rear end of the reamer (4) and the connector (5) mating segments.
4.根据权利要求1所述的旋转拖拉扩孔装置,其特征在于:扣紧装置(20)采用螺栓或者销结构。 4. The rotary drag reaming apparatus according to claim 1, characterized in that: the fastening means (20) using a bolt or pin structure.
CN2011103510464A 2011-11-09 2011-11-09 Rotary dragging reaming device CN102505918A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104234628A (en) * 2014-09-09 2014-12-24 无锡中地地质装备有限公司 Geological exploration reamer
CN104563879A (en) * 2014-12-29 2015-04-29 无锡中地地质装备有限公司 Waist belt structure for reamer

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CN2767634Y (en) * 2004-04-30 2006-03-29 上海威猛非开挖技术工程有限公司 Collapse preventing hole enlarger for drilling through soft stratum by horizontal directional drill
WO2010070256A1 (en) * 2008-12-19 2010-06-24 Schlumberger Technology B.V. Drilling apparatus
CN201934025U (en) * 2011-02-10 2011-08-17 天合石油集团汇丰石油装备股份有限公司 Buoy reamer with conical knife seat
US8011449B2 (en) * 2003-12-11 2011-09-06 Roth Raymond G Method and apparatus for directional drilling

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2307905Y (en) * 1997-07-21 1999-02-17 秦世范 Drill and enlarging hole device
US8011449B2 (en) * 2003-12-11 2011-09-06 Roth Raymond G Method and apparatus for directional drilling
CN2767634Y (en) * 2004-04-30 2006-03-29 上海威猛非开挖技术工程有限公司 Collapse preventing hole enlarger for drilling through soft stratum by horizontal directional drill
WO2010070256A1 (en) * 2008-12-19 2010-06-24 Schlumberger Technology B.V. Drilling apparatus
CN201934025U (en) * 2011-02-10 2011-08-17 天合石油集团汇丰石油装备股份有限公司 Buoy reamer with conical knife seat

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104234628A (en) * 2014-09-09 2014-12-24 无锡中地地质装备有限公司 Geological exploration reamer
CN104563879A (en) * 2014-12-29 2015-04-29 无锡中地地质装备有限公司 Waist belt structure for reamer

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