CN1282816C - A drilling tool used in horizontal drilling applications - Google Patents
A drilling tool used in horizontal drilling applications Download PDFInfo
- Publication number
- CN1282816C CN1282816C CNB018173179A CN01817317A CN1282816C CN 1282816 C CN1282816 C CN 1282816C CN B018173179 A CNB018173179 A CN B018173179A CN 01817317 A CN01817317 A CN 01817317A CN 1282816 C CN1282816 C CN 1282816C
- Authority
- CN
- China
- Prior art keywords
- bar tool
- boring
- boring bar
- guide
- stability
- 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.)
- Expired - Lifetime
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/28—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with non-expansible roller cutters
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Drilling Tools (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
A drilling tool for enlarging previously drilled horizontal bore holes. The tool has a guide surface forward of the drilling means to engage in the previously drilled hole and a stabilising surface behind the drilling means to engage in the larger hole to support the drilling means. The guide and stabilising surfaces may include ribs, helical ribs, rings or rollers. A mud motor may be placed between the drilling means and the stabilising surface.
Description
Technical field
The present invention relates to a kind of boring bar tool that in horizontal drilling is used, uses, particularly a kind of stability-enhanced boring bar tool, thus reduce to affact lateral load on the boring bar tool cutting part.
Background technology
The cutting part of boring bar tool or drill bit Design of device can be resisted the active force that mainly is parallel to boring bar tool longitudinal axis direction.But when horizontal drilling, instrument and other weight that are connected the parts on the instrument also produce the load of crossing the instrument longitudinal axis.The design of many cutting parts can not be resisted this lateral load, and causes the inaccuracy of holing.Therefore, the objective of the invention is to reduce to affact lateral load on the boring bar tool cutting part that uses in the horizontal drilling.
Usually, the horizontal drilling operation comprises that beginning forms a boring in a certain position, and this boring is advanced along more shallow camber line, and occurs in another position away from the entrance.This horizontal drilling technology of general use is to provide pipeline below riverbed, canal or harbour.This pipeline is used for delivery service such as water supply, sewage effluent or supply of electric power.
Should be appreciated that this horizontal drilling also comprises drilling bore hole, these holes favour horizontal plane.The present invention is of great use in following application, and in these are used, the loading that the angle of inclination produces may cause tool damage to cutting tool.
The present invention refers in particular to the equipment that is used to enlarge boring, this equipment utilization hinge brill effect reaming.That is, the before bore dia that gets out of boring is expanded as large diameter second boring.
Utilize second and subsequent handling, gradually this bore dia is enlarged after the boring that gets out basic horizontal again, this is general way.
The shortcoming of this known horizontal drilling instrument is that in the boring of second expansion, drilling equipment or cutting tool support boring bar tool.Generally speaking, use the cylinder awl as cutting tool.Bearing assembly generally is supported in the cylinder awl on axle journal or the supporting leg.Usually, the surface of outstanding a little axle journal in the periphery of cylinder awl or supporting leg, this makes arbitrary lateral load all act on the periphery of cylinder awl.
Bearings cylinder awl, the blade on the cylinder awl is unsuitable for resisting these lateral loads, and this causes in short relatively time rear bearing and breaks down.And lateral load causes the hole that cannot not get out roundly.This unsteady motion is called as in the hole " walks about ", and the central axis of boring bar tool swing in the hole causes occurring the not large-scale boring of circle.The penetrance of boring descends, and cutting tool can not be worked efficiently.
Tolerated these problems in the past, and also accepted because reduce the existing life tools that lateral load caused.
The purpose of this invention is to provide the device that a kind of efficient improves.
Summary of the invention
The most widely in the form, the present invention is present in the employed boring bar tool of horizontal drilling, is used to enlarge the diameter of the boring that has before got out in the present invention, and this boring bar tool comprises:
Main body;
Drilling equipment is positioned on the described main body, comprises a plurality of blades that radially separate, and is used for the second bigger boring of diameter is expanded as in the boring that had before got out;
Guide extends before described main body, and this guide is fit to be positioned at the boring that had before got out, so that guide moving of described boring bar tool along the boring that had before got out;
First group of surface of stability comprises a plurality of muscle ribs, and described muscle rib radially separates along the longitudinal axis extension of boring bar tool and around boring bar tool, makes one of them muscle rib between two blades; With
One or more second surfaces of stability, be positioned at the back edge of described main body, described first group and second surface of stability are suitable for the hole wall near described second boring, reduce to act on the load on the drilling equipment whereby, and described load is crossed the longitudinal axis of described boring bar tool.
According to the present invention, described boring bar tool uses its diameter and the identical or smaller guide of the bore diameter that had before got out.This guide supports the front end of boring bar tool, and the assurance boring bar tool is advanced along the path identical with previous boring.
Improvements of the present invention are, the surface of stability that provides at least one to be positioned at the drilling equipment back, thereby utilize the guide and the surface of stability with the boring bar tool horizontal support in the boring of boring.Because lateral load is supported between the guide and the surface of stability, gives the lateral load of drilling equipment so reduced effect, and boring bar tool is remained on substantially on the center line of previous boring.This has improved the efficient and the speed of boring.
The surface of stability can comprise the external surface with many muscle ribs, and every muscle rib extends and is spaced around the periphery of boring bar tool along the longitudinal axis of boring bar tool.Perhaps, the surface of stability can comprise the external surface with annulation, and this annulation is located at the back of drilling equipment, perhaps can comprise the external surface with a plurality of pads, and this pad is around the peripheral back that is provided with and is positioned at drilling equipment at interval of boring bar tool.
The surface of stability can comprise the one or more combination in longitudinal rib rib, one or more annulation or the pad.
And the surface of stability can comprise a plurality of roller bearings that radially separate, and roller bearing has the rotation that is parallel to the boring bar tool longitudinal axis.
The surface of guide can be cylindrical, so that enter in the previous boring, but also can have a plurality of longitudinal rib rib or isolated roller bearings around the guide periphery.In addition, on the external surface of guide, can use screw type longitudinal rib rib, maybe with the stayed surface of this muscle rib as the drilling equipment back.
According to the present invention, the combination of the guide and the surface of stability helps the load of boring bar tool supporting boring bar tool and the load that other parts that can be connected with boring bar tool apply.These parts comprise the rotary part that is used for the rotary drilling instrument, mud motor for example, the connector between mud motor and the boring bar tool, adapter piece, and other stable element.Usually, gapped between the external diameter of mud motor and bore diameter.When horizontal drilling, the weight of motor causes a large amount of load of crossing the boring bar tool axis.Under pressure, carry the drilling pipe of fluid also can apply a large amount of load to boring bar tool to mud motor.Even use other stabilizing means to support mud motor, also be this situation along drill pipe.
Another aspect of the present invention comprises that the above-mentioned boring bar tool of use is used for the back reaming reaming.In conventional borehole, the length of boring rope when boring bar tool when previous boring is advanced increases gradually.Under the situation in hinge counterboring hole, rear portion, pull boring bar tool by previous boring, therefore, drilling rod was thrown off connection gradually when boring bar tool advanced along previous boring.
In this one side of the present invention, the end of boring bar tool guide is connected with one group of drill pipe that links to each other.Drill pipe is to mud motor discharge pressure fluid, and this pressure fluid transmits by the conduit in the boring bar tool, and mud motor is positioned at the back of boring bar tool.Use mud motor to come the rotary drilling instrument, simultaneously tension force is imposed on the brill rope of drill pipe, to drag boring bar tool along previous boring.
The advantage that this has on the one hand of the present invention is to make the brill rope be subjected to tension force so that hole, and unlike in the conventional borehole, use compressive force in boring rope.
In the present embodiment, the guide and the surface of stability still support the load on the drill bit, thereby improve the accuracy of boring.
Brief description of drawings
In order to more fully understand the present invention, preferred embodiment is described now.Yet, will be appreciated that the present invention is not limited to the fine feature among the embodiment.
Embodiment shown in the accompanying drawing, wherein:
Fig. 1 illustrates the transverse cross-sectional view of horizontal drilling operation;
Fig. 2 illustrates the lateral view according to the first embodiment boring bar tool;
Fig. 3 illustrates the stereogram of boring bar tool shown in Figure 2;
Fig. 4 illustrates the stereogram according to the second embodiment of the invention boring bar tool;
Fig. 5 illustrates the assembly of boring bar tool, mud motor and screw type stabilizing member; With
Fig. 6 illustrates the boring bar tool of use roller bearing stabilizing member and the assembly of roller bearing stabilizing member.
The specific embodiment
Fig. 1 illustrates the common horizontal drilling process under the gutter, is wherein boring the horizontal drilling of representing with label 10.Horizontal drilling 10 is from a bit, and comes out on the surface of another point.Boring 10 has curved path, makes it can pass through specified conditions, railway for example shown in Figure 1 and river course.As shown in Figure 1, boring 10 is always with respect to the horizontal plane angled usually.This angle is generally quite little, and this causes a large amount of load laterally to be acted on the longitudinal axis in order to the rig that forms boring 10.
See that from Fig. 1 auger 11 is located at the starting point of boring, be used for applying longitudinal force so that boring bar tool advances along boring 10 to boring to restrict, and the rotary drilling rope.
Shown in amplifier section among Fig. 1 is more detailed, got out first boring 9 with first diameter, use auger 11 outside boring 9, to carry out drilling operation then, so that the brill rope 6 of operation auger 11 makes boring bar tool 7 obtain large diameter borehole 8.
Fig. 2 and Fig. 3 illustrate respectively according to the lateral view of boring bar tool 12 of the present invention and stereogram.Boring bar tool 12 comprises mid-section body 13, and drilling equipment is connected with this main body.In this embodiment, drilling equipment comprises a plurality of conical rollers 14.Conical roller 14 is well known in the art, has the hardened insert that is located in each conical roller surface.Use hardened insert that rock surface is applied compressive impact load, make rock produce fragment or landwaste.The lasting generation of fragment or landwaste is advanced boring bar tool 12.
The boring 16 that had before got out is expanded into second diameter boring 17 by conical roller 14.Stabilizing member surface 18 is used for boring bar tool 12 is supported between the boring 16 and major diameter second boring 17 that had before got out between conical roller 14 and the back.Stabilizing member surface 18 is near the hole wall of second diameter boring 17.
In the embodiment shown in Figure 2, stabilizing member surface 18 comprises a plurality of muscle ribs 20 that radially separate, and wherein the external surface of each muscle rib 20 comprises stabilizing member surface 18.In addition, annulation 21 is positioned at the rear portion of boring bar tool 12, and at the end of each muscle rib 20.The external surface of annulation comprises stabilizing member surface 18.
Can see that from Fig. 2 and the present invention shown in Figure 3 any lateral load that may impose on boring bar tool 12 all will be directed to 18 supportings in surface of part 15 and stabilizing member.This can reduce to impose on the lateral load on the conical roller 14 between above-mentioned two parts.
Tilted ribs rib 19 extends to sleeve pipe 26 from annulation 21.When recalling boring bar tool 12, muscle rib 19 provides back reaming, also helps boring bar tool 12 to enter once more in the tubular shell, and this housing can partly extend in the just drilled boring from its entrance.Under the normal condition, this housing stops in ground firm or that reinforce.Under the normal condition, it is not any problem that boring bar tool enters in the housing once more.Yet if ground is softer or the hole of shell end is enlarged in addition, traditional boring bar tool can block and prevent that it from further recalling.Muscle rib 19 is guaranteed boring bar tool 12 is directed in the housing, thereby can not block.In other parts of for example stabilizing member, can use similar muscle rib.
Fig. 4 illustrates the second embodiment of the present invention.This embodiment comprises guide 15, main body 13 and the surface of stability 18.Yet in such an embodiment, the surface of stability 18 comprises the external surface of longitudinal rib rib 20 and the external surface of the pad 29 that is connected with annulation 21.This causes producing the gap between the surface 18 on surface on the pad 29 18 and the muscle rib 20.This helps to recall boring bar tool 12, and removes borings through boring bar tool 12, makes chip can not be deposited in the rear portion of boring bar tool 12, and talus accumulation may cause that boring bar tool 12 is blocked in the boring.
Fig. 5 illustrates the assembly of the boring bar tool 12 that has mud motor 30.Therefore the diameter of mud motor 30 is supported by boring bar tool 12 and screw type stabilizing member 31 less than the diameter of second boring 17, has the surface of stability 33 on the external surface of this stabilizing member.It is outside that drilling pipe 32 extends to boring from stabilizing member 31.
Mud motor is suspended in second boring 17, applies a large amount of load to boring bar tool 12 significantly.Yet, because boring bar tool 12 is directed to the surface of stability 18 and the support of the surface of stability on the screw type stabilizing member 31 on part 15, the boring bar tool 12, so there is small lateral load to act on the conical roller 14.
Fig. 6 illustrates the another kind setting of boring bar tool.In this embodiment, a plurality of roller bearings 34 are configured on the guide 15.Preferably, roller bearing 34 is installed on the extension 24 and other muscle rib 25 of muscle rib 20.
Roller bearing also can be installed in the boring bar tool 12, so roller bearing comprises stabilizing member surface 18.In this case, roller bearing 34 also will be located in the muscle rib 20.
Roller bearing 34 also is installed in the stabilizing member 31.Fig. 5 and stabilizing member 31 shown in Figure 6 also can be provided with tilted ribs rib 19, and when recalling boring bar tool and stabilizing member 31, the tilted ribs rib helps easily to enter in the housing.
Except longitudinal rib rib 20 and other muscle rib 25, muscle rib 20 and 25 can be spiral-shaped, during with convenient boring bar tool 12 rotations, guarantees that the surface of stability 18 or stayed surface 23 are always with second boring 17 or hole and 16 contact.In addition, twining of spiral type groove turned round and can be combined with the rotation of boring bar tool, along guide 15 and boring bar tool 12 borings hauled out backward.
Another aspect of the present invention is included in and uses boring bar tool 12 in the back reaming assembly.In this embodiment, Fig. 2 can have the drilling pipe that is connected with guide 15 front ends to boring bar tool shown in Figure 4.Mud motor can be connected to the rear portion of boring bar tool 12, and the drilling fluids of pressurization flows so that provide electric energy to mud motor by boring bar tool 12.Then tension force is imposed on drilling pipe, give conical roller 14, utilize mud motor to make boring bar tool 12 carry out necessary rotation simultaneously thereby will bore the power effect.In this embodiment, drilling pipe is worked under the tension force effect, rather than works under the pressure in the conventional borehole situation.Tension force can not cause drill pipe buckling, and usually drill pipe buckling can take place under the situation of exerting pressure.Therefore, can use the littler drilling pipe of diameter, so that recall the bigger boring bar tool of relative diameter 12.
Utilize this embodiment, at first get out pilot hole.Do not recall and bore rope, but when first boring bar tool and other parts expose, they are taken off from boring rope, therefore, can connect back reaming boring bar tool 12 and mud motor.Use same brill rope boring bar tool 12 to be towed back to then, to produce the second bigger boring of diameter by pilot hole.
Can understand from above-mentioned explanation, the invention provides a kind of improved boring bar tool, it is applicable to the lateral load that opposing can produce usually better in the horizontal drilling operation.Therefore, wish that boring bar tool of the present invention has the working life of raising, significantly improves the efficient of boring work.
Claims (11)
1. boring bar tool that uses in horizontal drilling is used is used to enlarge the diameter of the boring that had before got out, and described boring bar tool comprises:
Main body;
Drilling equipment is positioned on the described main body, comprises a plurality of blades that radially separate, and is used for the second bigger boring of diameter is expanded as in the boring that had before got out;
Guide extends before described main body, and this guide is fit to be positioned at the boring that had before got out, so that guide moving of described boring bar tool along the boring that had before got out;
First group of surface of stability comprises a plurality of muscle ribs, and described muscle rib radially separates along the longitudinal axis extension of boring bar tool and around boring bar tool, makes one of them muscle rib between two blades; With
One or more second surfaces of stability, be positioned at the back edge of described main body, described first group and second surface of stability are suitable for the hole wall near described second boring, reduce to act on the load on the drilling equipment whereby, and described load is crossed the longitudinal axis of described boring bar tool.
2. boring bar tool as claimed in claim 1, wherein, the diameter of described guide is identical or smaller with the diameter of the boring that had before got out, so guide supports the front end of boring bar tool, and guarantees that boring bar tool advances along the path identical with the boring that had before got out.
3. boring bar tool as claimed in claim 1, wherein, described second surface of stability comprises the external surface with annulation, this annulation is positioned at the back of drilling equipment.
4. boring bar tool as claimed in claim 1, wherein, described second surface of stability comprises the external surface with a plurality of pads, described pad is provided with at interval around the peripheral of boring bar tool, and is positioned at the back of drilling equipment.
5. boring bar tool as claimed in claim 1, wherein, described second surface of stability comprises a plurality of roller bearings that radially separate, described roller bearing has the rotation that is parallel to the boring bar tool longitudinal axis.
6. boring bar tool as claimed in claim 1, wherein, the surface of described guide is cylindrical, so that be configured in the boring that had before got out.
7. boring bar tool as claimed in claim 1, wherein, described guide comprises around peripheral longitudinal rib rib that is provided with of guide or the roller bearing that separates.
8. boring bar tool as claimed in claim 1, wherein, the longitudinal rib rib on the described surface of stability is a screw type.
9. boring bar tool as claimed in claim 7, wherein, the longitudinal rib rib on the described guide is a screw type.
10. boring bar tool as claimed in claim 1 also comprises the mud motor between the drilling equipment and the surface of stability.
11. boring bar tool as claimed in claim 1, wherein, described guide comprises the threaded joints that is used to bore rope, thereby configuration is used for the boring bar tool of back reaming.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPR0689 | 2000-10-12 | ||
| AUPR0689A AUPR068900A0 (en) | 2000-10-12 | 2000-10-12 | A drilling tool used in horizontal drilling applications |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1469964A CN1469964A (en) | 2004-01-21 |
| CN1282816C true CN1282816C (en) | 2006-11-01 |
Family
ID=3824747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB018173179A Expired - Lifetime CN1282816C (en) | 2000-10-12 | 2001-10-09 | A drilling tool used in horizontal drilling applications |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP1339939B1 (en) |
| CN (1) | CN1282816C (en) |
| AT (1) | ATE348241T1 (en) |
| AU (1) | AUPR068900A0 (en) |
| DE (1) | DE60125228T2 (en) |
| HK (1) | HK1060610A1 (en) |
| RU (1) | RU2276246C2 (en) |
| WO (1) | WO2002031313A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107407131A (en) * | 2015-01-23 | 2017-11-28 | 马斯特森可斯私人有限公司 | Vertical shaft for drilling system expands arrangement |
| CN110821409A (en) * | 2019-11-15 | 2020-02-21 | 四川石油天然气建设工程有限责任公司 | Manufacturing method of reamer with self-righting guide function |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2371740C (en) * | 2001-02-13 | 2006-04-18 | Smith International, Inc. | Back reaming tool |
| BRPI0808146B1 (en) * | 2007-02-28 | 2018-06-12 | Welltec A/S | DRILLING HEAD, DRILLING TOOL, DRILLING SYSTEM AND USING THE WELL BACKGROUND DRILLING HEAD |
| SA108290832B1 (en) * | 2007-12-21 | 2012-06-05 | بيكر هوغيس انكوربوريتد | Reamer with Stabilizer Arms for Use in A Wellbore |
| CN101832137B (en) * | 2009-09-17 | 2013-12-25 | 新奥气化采煤有限公司 | Pre-embedding method for coal seam roof strut |
| CN101701507B (en) * | 2009-10-30 | 2015-01-21 | 上海佳友市政建筑有限公司 | Underreamer with extrusion and wall-expansion functions |
| US20140238751A1 (en) * | 2011-09-06 | 2014-08-28 | Petrus Christiaan Gouws | Auxiliary equipment for use with drilling apparatus |
| RU2543226C2 (en) * | 2013-01-11 | 2015-02-27 | Открытое акционерное общество "Научно-производственное предприятие "Бурсервис" | Method for enlargement and reaming of well shaft |
| CN103147693B (en) * | 2013-03-22 | 2015-10-28 | 四川圆通建设有限公司 | Whether a kind of identifiable design uses the quick reamer reclaiming gear wheel |
| US10619420B2 (en) | 2013-05-20 | 2020-04-14 | The Charles Machine Works, Inc. | Reamer with replaceable rolling cutters |
| US9714544B2 (en) | 2013-05-20 | 2017-07-25 | The Charles Machine Works, Inc. | Reamer with replaceable rolling cutters |
| RU2529038C1 (en) * | 2013-05-29 | 2014-09-27 | Дмитрий Николаевич Сорокин | Device and method of hole reaming |
| DE102013013477A1 (en) | 2013-08-15 | 2015-03-12 | Herrenknecht Ag | Drilling head for expanding a pilot hole to create a borehole |
| DE102013111350A1 (en) * | 2013-10-15 | 2015-04-16 | TERRA AG für Tiefbautechnik | Expander tool and device for expanding a passage opening present in the ground |
| CN104563878A (en) * | 2014-12-29 | 2015-04-29 | 无锡中地地质装备有限公司 | Waistband structure of novel reamer |
| RU176117U1 (en) * | 2017-08-31 | 2018-01-09 | Владимир Вадимович Калинин | Combined Expander |
| CN110857622B (en) * | 2018-08-16 | 2023-06-23 | 中国石油化工股份有限公司 | Alarm device for foreign matter in back dragging hole of directional drilling |
| CN110748298B (en) * | 2019-11-15 | 2022-03-18 | 四川石油天然气建设工程有限责任公司 | Reamer with self-righting guide function |
| CN111852336B (en) * | 2020-08-27 | 2021-10-29 | 安徽建筑大学 | Drilling tool for horizontal directional drilling and reaming |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5269384A (en) * | 1991-11-08 | 1993-12-14 | Cherrington Corporation | Method and apparatus for cleaning a bore hole |
| US5325932A (en) * | 1992-03-27 | 1994-07-05 | The Robbins Company | Down reaming apparatus |
| NO178938C (en) * | 1992-04-30 | 1996-07-03 | Geir Tandberg | Borehole expansion device |
| US5314267A (en) * | 1992-08-27 | 1994-05-24 | Mark Osadchuk | Horizontal pipeline boring apparatus and method |
| CA2158637A1 (en) * | 1993-03-17 | 1994-09-29 | John North | Improvements in or relating to drilling and the extraction of fluids |
| US5904213A (en) * | 1995-10-10 | 1999-05-18 | Camco International (Uk) Limited | Rotary drill bits |
| US5765653A (en) * | 1996-10-09 | 1998-06-16 | Baker Hughes Incorporated | Reaming apparatus and method with enhanced stability and transition from pilot hole to enlarged bore diameter |
| US6059051A (en) * | 1996-11-04 | 2000-05-09 | Baker Hughes Incorporated | Integrated directional under-reamer and stabilizer |
-
2000
- 2000-10-12 AU AUPR0689A patent/AUPR068900A0/en not_active Abandoned
-
2001
- 2001-10-09 WO PCT/AU2001/001260 patent/WO2002031313A1/en active IP Right Grant
- 2001-10-09 AT AT01975838T patent/ATE348241T1/en active
- 2001-10-09 EP EP01975838A patent/EP1339939B1/en not_active Expired - Lifetime
- 2001-10-09 RU RU2003113555/03A patent/RU2276246C2/en active
- 2001-10-09 CN CNB018173179A patent/CN1282816C/en not_active Expired - Lifetime
- 2001-10-09 DE DE60125228T patent/DE60125228T2/en not_active Expired - Lifetime
-
2004
- 2004-05-24 HK HK04103652A patent/HK1060610A1/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107407131A (en) * | 2015-01-23 | 2017-11-28 | 马斯特森可斯私人有限公司 | Vertical shaft for drilling system expands arrangement |
| CN107407131B (en) * | 2015-01-23 | 2020-04-14 | 马斯特森可斯私人有限公司 | Shaft enlargement arrangement for a drilling system |
| CN110821409A (en) * | 2019-11-15 | 2020-02-21 | 四川石油天然气建设工程有限责任公司 | Manufacturing method of reamer with self-righting guide function |
Also Published As
| Publication number | Publication date |
|---|---|
| DE60125228D1 (en) | 2007-01-25 |
| RU2276246C2 (en) | 2006-05-10 |
| DE60125228T2 (en) | 2007-09-27 |
| EP1339939A1 (en) | 2003-09-03 |
| ATE348241T1 (en) | 2007-01-15 |
| HK1060610A1 (en) | 2004-08-13 |
| EP1339939B1 (en) | 2006-12-13 |
| AUPR068900A0 (en) | 2000-11-09 |
| CN1469964A (en) | 2004-01-21 |
| WO2002031313A1 (en) | 2002-04-18 |
| EP1339939A4 (en) | 2005-04-06 |
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