CN1305562A - Downhole milling device - Google Patents
Downhole milling device Download PDFInfo
- Publication number
- CN1305562A CN1305562A CN 99807158 CN99807158A CN1305562A CN 1305562 A CN1305562 A CN 1305562A CN 99807158 CN99807158 CN 99807158 CN 99807158 A CN99807158 A CN 99807158A CN 1305562 A CN1305562 A CN 1305562A
- Authority
- CN
- China
- Prior art keywords
- elbow
- milling cutter
- inclination
- milling
- piston
- 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.)
- Granted
Links
- 238000003801 milling Methods 0.000 title claims abstract description 81
- 238000005520 cutting process Methods 0.000 claims description 14
- 238000005553 drilling Methods 0.000 claims description 11
- 239000003129 oil well Substances 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 7
- 239000013536 elastomeric material Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 description 7
- 210000000515 tooth Anatomy 0.000 description 6
- 230000002950 deficient Effects 0.000 description 3
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- 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
- E21B27/00—Containers for collecting or depositing substances in boreholes or wells, e.g. bailers, baskets or buckets for collecting mud or sand; Drill bits with means for collecting substances, e.g. valve drill bits
- E21B27/02—Dump bailers, i.e. containers for depositing substances, e.g. cement or acids
-
- 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
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/06—Cutting windows, e.g. directional window cutters for whipstock operations
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Milling Processes (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
A device for performing milling operations in an underground borehole comprises a toppling head (2) which is pivotably secured to a stator housing (1) and which is equipped with one or more rotatable mills (3, 4) which are in use pivoted together with the toppling head (2) into an extended position from the stator housing (1) to mill a window in a surrounding casing (23), or to underream the wellbore whilst the stator housing is rotated in the wellbore.
Description
The present invention relates to a kind of device that is used for carrying out milling machine operation at subterranean boreholes.Described milling machine operation can comprise the reaming of boring or cut out a window on pit shaft.
United States Patent (USP) 5,551,509 and publication number be the using method that discloses a kind of rotatable milling cutter among International Patent Application PCT/GB95/02267 of WO96/09460, in the method, at first milling cutter is imported in the oil well casing, then by in oil well casing, cutting out a window wanting to push rotary milling tools downwards on the position of windowing along the whipstock inclined-plane that is fixed in the oil well casing.BP GB2,306,985 disclose a kind of milling cutter, and this milling cutter radially is pressed in the sleeve pipe that will be cut open by hydraulic piston, wherein hydraulic piston is radially outstanding and be pressurized fluid and drive in the motor shell of drill bit, and the while charging fluid also is used to drive the hydraulic motor of drill bit.Fluid is injected into by a flexible pipe, and is used for passing at the window cutting process that housing longitudinally spurs or the pushing tow milling cutter.
Existing window cutter sweep has following defective: the shape of the window of incision and position be inaccuracy very, and the window cutting operation is also very time-consuming, also produces a large amount of thick rock dust of removing in oil well of being difficult to sometimes.
Another defective of existing milling attachment is: the milling cutter of rotation will apply a very high and variable tangential moment of torsion to milling attachment, and tangential moment of torsion will make milling attachment tangentially move.Therefore existing milling attachment need lead by guiding device, the whipstock of secure fixation in sleeve pipe for example, thus avoid milling attachment moving in milling process.
The objective of the invention is to avoid the defective of existing milling attachment.
The inventive system comprises: a stator housing; An inclination elbow, this elbow are rotatably mounted on the housing and are equipped with a plurality of rotating milling cutters; A driving mechanism is used for rotating each milling cutter relative to elbow; With single-revolution mechanism, be used for relative housing return bend between a retracted position and an extended position, wherein each milling cutter is all aimed at stator case substantially on retracted position, and each milling cutter is all radially outstanding along the direction away from housing at a certain angle on extended position.
This device preferably is equipped with a pair of milling cutter that can rotate in opposite direction, thus the tangential moment that generation can be repealed by implication, direction is opposite.
The milling cutter of Zhuan Donging can be cut into the window of a sharp outline in sleeve pipe or other oil well casing in opposite direction, and is easy to sealing by fine ground window edge.
Stator case preferably defines a longitudinal median plane of this device, driving mechanism preferably includes the driving shaft of a flexibility, this driving shaft can be compassingly set at the pivot center rotation on the described central plane, and this driving shaft has also constituted the power shaft of the gear mechanism that is positioned at elbow, described gear mechanism comprises a pair of output shaft that rotates in opposite direction, and a milling cutter is installed on each output shaft.
Slew gear preferably can allow the pivoted of elbow relative stator housing around a vertical substantially described central plane; Output shaft preferably can rotate around the pivot center that is parallel to each other, and the pivot center basic fixed position that is parallel to each other is in the equidistant place of the central plane of distance device; It is columnar main body that described milling cutter comprises basic, and main body is provided with spiral helicine mill teeth, and the helical angle numerical value of mill teeth equates but rotation direction is opposite, and the mill teeth of adjacent milling cutter is faced on described central plane or near described central plane mutually.
Driving mechanism can suitably comprise the hydraulic motor of a Moineau formula, and this motor is provided with a rotor, and this rotor is rotatably installed on the upper end of stator case, and described motor is fixed in the upper end of flexible drive shaft; Described slew gear can comprise a hydraulic piston, this piston is slidably mounted between the inclined upper surface of the outlet of the Moineau formula motor in the stator case and elbow, thereby in use, the supercharging power transmitting fluids that is sprayed by motor is acted on the inclined upper surface of elbow, so that elbow is towards its extended position revolution.
In this case, hydraulic piston preferably is slidingly mounted on the flexible axle, and flexible axle is preferably made by elastomeric material and can be applied a residual torque to elbow, and when not having action of hydraulic force on piston, this residual torque will make elbow towards its retracted position revolution.
If this device is used as the milling attachment of sleeve pipe window, so preferably be fixed in a drilling cuttings collecting box on the housing and be positioned under the milling cutter, in use, the drilling cuttings in the milling cutter is poured in the collecting box from the hydraulic drive fluid of motor ejection.
With reference to accompanying drawing, engage feature, purpose and advantage that following detailed description will be known the present invention's milling attachment, wherein:
Fig. 1 is the lateral view of milling attachment of the present invention, and in the figure, a pair of milling cutter is positioned on the position of its withdrawal;
Fig. 2 is the longitudinal sectional view of the described milling attachment of claim 1;
Fig. 3 shows the milling attachment of Fig. 2, and in the figure, milling cutter is in the state of stretching out and is just cutting out a window on oil well casing;
Fig. 4 shows another embodiment according to milling attachment of the present invention, and in this embodiment, described device is used as the Counterboring apparatus of wellhole.
Referring to Fig. 1, there is shown a milling attachment, it comprises: a stator housing 1, one inclination elbow 2 and a pair of in opposite direction two milling cutters 3 and 4.Two milling cutters 3 are faced on the symmetrical centre plane of milling attachment each other mutually with 4, and this central plane is perpendicular to the plane at Fig. 1 place, and intersect at central axis 5 places with the plane at accompanying drawing place.
Inclination elbow 2 hangs in the stator case 1 rotationally by a pair of joint pin 6, and joint pin 6 allows elbow 2 to rotate around rotation 7, and axis 7 cardinal principles are perpendicular to the symmetrical centre plane of central axis 5 and milling attachment.
Elbow 2 comprises a gear-box (not shown), be provided with the output shaft 8 of a flexible power shaft 9 and pair of parallel in the gear-box, be separately installed with milling cutter 3 and 4 on the output shaft 8, and when flexible power shaft 9 when relative stator housing 1 rotates under the driving of Moineau formula or other hydraulic motor or motor (not shown), as shown in arrow 12, output shaft 8 can rotate along the rightabout shown in the arrow 10 with the speed that equates relative to elbow 2.
Milling cutter 3 and 4 comprises and is roughly columnar main body, and identical with size respectively but helical angle that direction is opposite is equipped with spiral helicine mill teeth on this main body, these mill teeths can be meshing with each other on the symmetrical centre plane of milling attachment.
In the time of in milling attachment is lowered to oil well, elbow 2 and milling cutter 3 and 4 are under the feed status of withdrawal, and under this state, milling cutter 3 and 4 is in substantially parallel relationship to the central axis 5 of milling attachment, and do not give prominence in stator case 1, as illustrated in fig. 1 and 2.Fig. 2 shows under feed status, and flexible axle 9 has crooked shape, and elbow 2 comprises a upper inclined surface 13, and this inclined-plane 13 is provided with a top 14 that engages with the lower end of piston 15, and piston 15 is mounted slidably in the inside of stator case 1.
The upper inclined surface 13 of piston 15 and elbow has formed a slew gear, and this slew gear can make inclination elbow 2 rotate towards extended position shown in Figure 3.
Fig. 3 shows the liquid that sprayed by hydraulic motor through the inside 18 that the upper end and the annular opening between the flexible axle 9 16 of piston 15 flows into pistons 15, and is as shown in arrow 19.
The flow restriction of annular opening 16 has formed hydraulic pressure difference between cavity on the piston 15 20 and internal piston 18, this pressure differential will make piston pass stator case 1 to lower slider, and will be as shown in arrow 21.The top 14 of the upper inclined surface 13 that moves down also downward promotion elbow 2 of piston, thus elbow 2 is rotated relative to pivotal line 7, as shown in arrow 31.
Milling cutter 3 and 4 turns round towards extended position around pivotal line 7 with elbow 2, and is rotated by axle 8 simultaneously, thereby cuts a window 22 on the sleeve pipe 23 that surrounds milling attachment.
When the whole upper inclined surface 13 of elbow 2 engaged with the lower end of piston 15, milling cutter 3 and 4 outside revolutions just stopped, and on this position, milling cutter 3 and 4 stretches out in stator case 1 with predetermined angle.Through an outlet 24 ejections, liquid to be spraying to milling cutter 3 and 4 from exporting 24 at a high speed from the inside 18 of piston for liquid, thereby cools off its mill teeth 11 and drilling cuttings 25 is washed away.Next, liquid circulates by a drilling cuttings collecting box 26 that is suspended on the bottom of stator case 1, and is as shown in arrow 27.Guide plate 28 in the collecting box 26 is used to reduce the flow velocity of liquid, thereby make drilling cuttings can under the effect of gravity and/or magnetic force, separate and be deposited in the bottom of collecting box with liquid, then, by the opening 29 on collecting box 26 tops liquid is entered in the annular space of milling attachment.
When milling cutter 3 and 4 cut window 32 in oil well casing 23, milling attachment will upwards be spurred along sleeve pipe by the piston (not shown) that is arranged on this device, has required length up to window 22.This device preferably hangs in the sleeve pipe 23 by a coiled tubing or drill string, in milling process, coiled tubing or drill string will be by upwards pullings gradually, and the piston on this device guarantees that this device can upwards move in a distance that accurately limits with a speed that accurately limits by sleeve pipe 23 simultaneously.
Milling cutter 3 and 4 acts on equilibrant force on the stator case will make this device mill out the window of a straight and clear-cut quickly and accurately in oil well casing 23, and can not stay drilling cuttings at inside pipe casing.Be appreciated that if desired milling cutter also can the columnar shape of right and wrong, for example can be truncated cone shape.In this case, the rotating shaft of two milling cutters preferably intersects on the central plane of this device.
Fig. 4 shows another embodiment according to device of the present invention, and wherein this device is used for the reaming of uncased earth drilling.
Device top shown in Figure 4 is identical with the top of Fig. 1-3 shown device, and identical Reference numeral is represented identical parts.
But device shown in Figure 4 does not comprise the drilling cuttings collecting box, and it is provided with a stator housing 1, and this housing can rotate around central axis 5, and is as shown in arrow 40.
Device shown in Figure 4 is equipped with a milling cutter 4, and when the stator case rotation, and milling cutter 4 can be finished the ream operation to wellhole 41 when elbow 2 rotates simultaneously.Elbow 2 stretches out in the mode shown in Fig. 1-3 that is same as and withdraws.
Flexible axle 9 is connected with output shaft 8 by the gear-box that is arranged in the elbow 2, perhaps also can be made into integration with output shaft 8.If desired, Counterboring apparatus shown in Figure 4 can be equipped with a pair of two milling cutters 4 that rotate in opposite direction, and this is identical with the situation shown in Fig. 1-3.
Claims (9)
1. device that is used for carrying out milling machine operation at subterranean boreholes, it comprises: a stator housing; One inclination elbow, this elbow are fixed on the stator case rotationally and are provided with a plurality of rotating milling cutters; One is used for the driving mechanism that the relative tilt elbow rotates each milling cutter; One is used to slew gear that described inclination elbow relative stator housing is rotated between a retracted position and an extended position, wherein on retracted position, each milling cutter is all aimed at stator case substantially, on extended position, each milling cutter is all outstanding along side direction from stator case with certain angle.
2. device according to claim 1, it is characterized in that: described stator case limits a longitudinal median plane of this device, described driving mechanism comprises a flexible axle, this flexible axle can be around the pivot center rotation that is positioned in the described central plane, this flexible axle has also formed a power shaft, and described power shaft can directly or indirectly be connected with the output shaft that a milling cutter respectively is installed.
3. device according to claim 2 is characterized in that: described slew gear allows inclination elbow relative stator housing to rotate around the pivotal line of the central plane of a vertical substantially described device.
4. device according to claim 3, it is characterized in that: described inclination elbow is provided with a pair of milling cutter that rotates in opposite direction, described milling cutter is installed on the output shaft respectively, and described output shaft can be around being parallel to each other and rotating apart from the equidistant pivot center of the central plane of described device, described milling cutter comprises the basic columnar main body that is, described main body is provided with the helical form mill teeth, the helical angle equal and opposite in direction of described mill teeth but rotation direction is opposite, the mill teeth of adjacent milling cutter are on the central plane of described device or facing mutually near the central plane place.
5. device according to claim 2, it is characterized in that: described inclination elbow is provided with a pair of milling cutter that rotates in opposite direction, described milling cutter is installed on the output shaft, described output shaft can be respectively around the pivot center rotation, described pivot center intersects being positioned on the intersection location of described central plane, described milling cutter has the main body of frustum-like shape, and described main body is provided with intermeshing mill teeth.
6. device according to claim 2 is characterized in that: described driving mechanism comprises a hydraulic motor, and this hydraulic motor is provided with a rotor, and described rotor is rotatably installed in the stator case and with flexible axle and is connected.
7. device according to claim 6, it is characterized in that: described hydraulic motor is a Moineau formula motor that is arranged at the stator case upper end, described slew gear comprises a hydraulic piston, described piston is slidingly mounted between the upper inclined surface of the outlet of Moineau formula motor in the stator case and inclination elbow, thereby in use, the supercharging power transmitting fluids that is sprayed by motor is pressed on piston on the described upper inclined surface of inclination elbow, thereby the inclination elbow is rotated towards its extended position.
8. device according to claim 6, it is characterized in that: described hydraulic piston is slidingly mounted on the flexible axle, described flexible axle is made by elastomeric material and the inclination elbow is applied a remaining moment, when not having hydraulic pressure to act on the piston, this remnants moment will make the inclination elbow rotate towards its extended position.
9. according to claim 4 and 7 described devices, it is characterized in that: described device is used for milling out a window in oil well casing, the one drilling cuttings collecting box that is positioned under the milling cutter is fixed on the described housing, in use, the hydraulic drive fluid from the motor ejection pours drilling cuttings in the drilling cuttings collecting box from milling cutter.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP98304595.6 | 1998-06-10 | ||
| EP98304595 | 1998-06-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1305562A true CN1305562A (en) | 2001-07-25 |
| CN1119499C CN1119499C (en) | 2003-08-27 |
Family
ID=8234868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99807158A Expired - Fee Related CN1119499C (en) | 1998-06-10 | 1999-06-09 | Downhole milling device |
Country Status (12)
| Country | Link |
|---|---|
| EP (1) | EP1088151B1 (en) |
| CN (1) | CN1119499C (en) |
| AU (1) | AU741468B2 (en) |
| BR (1) | BR9911083A (en) |
| CA (1) | CA2334150A1 (en) |
| DE (1) | DE69905364D1 (en) |
| EA (1) | EA002048B1 (en) |
| ID (1) | ID27015A (en) |
| NO (1) | NO314855B1 (en) |
| NZ (1) | NZ508288A (en) |
| OA (1) | OA11626A (en) |
| WO (1) | WO1999064715A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102395749A (en) * | 2009-04-14 | 2012-03-28 | 西部产品科技有限公司 | Device for a downhole apparatus for machining of casings and also a method of depositing machined shavings |
| CN111980614A (en) * | 2020-08-28 | 2020-11-24 | 中国石油天然气股份有限公司 | Hydraulic large-angle bendable milling tool |
| CN114922581A (en) * | 2022-05-27 | 2022-08-19 | 重庆科技学院 | Underground casing continuous hole forming device and working method thereof |
| CN117145379A (en) * | 2023-10-31 | 2023-12-01 | 长沙黑金刚实业有限公司 | Reverse circulation impactor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2296122C (en) | 1999-01-15 | 2008-07-29 | Baker Hughes Incorporated | Window forming by flame cutting |
| US6971449B1 (en) | 1999-05-04 | 2005-12-06 | Weatherford/Lamb, Inc. | Borehole conduit cutting apparatus and process |
| US6364037B1 (en) | 2000-04-11 | 2002-04-02 | Weatherford/Lamb, Inc. | Apparatus to actuate a downhole tool |
| US6536525B1 (en) | 2000-09-11 | 2003-03-25 | Weatherford/Lamb, Inc. | Methods and apparatus for forming a lateral wellbore |
| US6474415B1 (en) * | 2000-11-15 | 2002-11-05 | Schlumberger Technology Corporation | Method and apparatus for milling openings in downhole structures |
| GB2389129B8 (en) * | 2002-05-29 | 2008-01-29 | Lattice Intellectual Property | Method and dual reamer apparatus for forming boredhole |
| US7077212B2 (en) | 2002-09-20 | 2006-07-18 | Weatherford/Lamb, Inc. | Method of hydraulically actuating and mechanically activating a downhole mechanical apparatus |
| GB0226725D0 (en) * | 2002-11-15 | 2002-12-24 | Bp Exploration Operating | method |
| US20090308605A1 (en) | 2008-06-14 | 2009-12-17 | Mcafee Wesley Mark | Methodolgy and apparatus for programmable robotic rotary mill cutting of multiple nested tubulars |
| GB2462306B (en) * | 2008-08-01 | 2012-12-26 | Deep Casing Tools Ltd | Reaming tool |
| WO2010027274A1 (en) * | 2008-09-08 | 2010-03-11 | Sinvent As | An apparatus and method for modifying the sidewalls of a borehole |
| US8146679B2 (en) | 2008-11-26 | 2012-04-03 | Schlumberger Technology Corporation | Valve-controlled downhole motor |
| US8215400B2 (en) * | 2010-10-29 | 2012-07-10 | Halliburton Energy Services, Inc. | System and method for opening a window in a casing string for multilateral wellbore construction |
| AU2015289775B2 (en) | 2014-07-14 | 2018-08-09 | Aarbakke Innovation A.S. | Wellbore intervention tool for penetrating obstructions in a wellbore |
| CN107387011A (en) * | 2017-08-02 | 2017-11-24 | 西南石油大学 | Waterpower promotes the downhole tool for realizing continuous cutting different-diameter sleeve pipe |
| US10711551B2 (en) * | 2018-07-25 | 2020-07-14 | Saudi Arabian Oil Company | Milling downhole tubulars |
| CA3203455A1 (en) * | 2020-12-02 | 2022-06-09 | Conocophillips Company | Method and apparatus for milling a window in casing |
| CN116255100B (en) * | 2023-04-27 | 2023-09-12 | 山东爱特机电技术有限责任公司 | Super capacitor energy storage electric workover rig |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US527123A (en) * | 1894-10-09 | Means for transporting beer | ||
| NL23055C (en) * | 1928-12-28 | 1930-05-15 | ||
| US4003602A (en) * | 1976-01-16 | 1977-01-18 | Coaltex, Incorporated | Method and apparatus for in-cutting and out-cutting during coal mining |
| DE3107973C2 (en) * | 1980-07-12 | 1982-12-02 | Preussag Ag, 3000 Hannover Und 1000 Berlin | Drilling tool for producing curved sections of deep boreholes |
| GB2129350A (en) * | 1982-10-14 | 1984-05-16 | Colebrand Ltd | Remotely controllable cutting apparatus |
| FR2597543B1 (en) * | 1986-04-17 | 1988-06-24 | Soletanche | DEVICE FOR UNDERWATER DRILLING OF FOUNDATIONS |
| FR2641316B1 (en) * | 1988-12-30 | 1995-09-08 | Inst Francais Du Petrole | LINING FOR BOREHOLE WITH CONTROLLED TRAJECTORY COMPRISING A BENDED ELEMENT WITH VARIABLE ANGLE AND USE OF THIS LINING |
| US5056242A (en) * | 1989-05-12 | 1991-10-15 | Finic, B.V. | Underground wall construction method and apparatus |
| US5135059A (en) * | 1990-11-19 | 1992-08-04 | Teleco Oilfield Services, Inc. | Borehole drilling motor with flexible shaft coupling |
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| US5484029A (en) * | 1994-08-05 | 1996-01-16 | Schlumberger Technology Corporation | Steerable drilling tool and system |
| GB9422837D0 (en) * | 1994-09-23 | 1995-01-04 | Red Baron Oil Tools Rental | Apparatus for milling a well casing |
| US5503235A (en) * | 1994-11-28 | 1996-04-02 | Falgout, Sr.; Thomas E. | Directional drilling control method |
| US5551509A (en) * | 1995-03-24 | 1996-09-03 | Tiw Corporation | Whipstock and starter mill |
| GB2306985B (en) * | 1995-11-07 | 1999-06-02 | Hector Filippus Alexand Susman | Improvements in milling |
| DE19612902C2 (en) * | 1996-03-30 | 2000-05-11 | Tracto Technik | Direction drilling method and apparatus for performing the method |
-
1999
- 1999-06-09 DE DE69905364T patent/DE69905364D1/en not_active Expired - Lifetime
- 1999-06-09 EA EA200100019A patent/EA002048B1/en not_active IP Right Cessation
- 1999-06-09 WO PCT/EP1999/004039 patent/WO1999064715A1/en active IP Right Grant
- 1999-06-09 CN CN99807158A patent/CN1119499C/en not_active Expired - Fee Related
- 1999-06-09 ID IDW20002563A patent/ID27015A/en unknown
- 1999-06-09 OA OA1200000337A patent/OA11626A/en unknown
- 1999-06-09 NZ NZ508288A patent/NZ508288A/en unknown
- 1999-06-09 EP EP99936456A patent/EP1088151B1/en not_active Expired - Lifetime
- 1999-06-09 CA CA002334150A patent/CA2334150A1/en not_active Abandoned
- 1999-06-09 AU AU51550/99A patent/AU741468B2/en not_active Ceased
- 1999-06-09 BR BR9911083-0A patent/BR9911083A/en not_active IP Right Cessation
-
2000
- 2000-12-08 NO NO20006247A patent/NO314855B1/en not_active IP Right Cessation
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102395749A (en) * | 2009-04-14 | 2012-03-28 | 西部产品科技有限公司 | Device for a downhole apparatus for machining of casings and also a method of depositing machined shavings |
| US8931555B2 (en) | 2009-04-14 | 2015-01-13 | West Production Technology As | Device for a downhole apparatus for machining of casings and also a method of depositing machined shavings |
| CN102395749B (en) * | 2009-04-14 | 2015-05-20 | 西部产品科技有限公司 | Device for a downhole apparatus for machining of casings and also a method of depositing machined shavings |
| CN111980614A (en) * | 2020-08-28 | 2020-11-24 | 中国石油天然气股份有限公司 | Hydraulic large-angle bendable milling tool |
| CN111980614B (en) * | 2020-08-28 | 2022-11-15 | 中国石油天然气股份有限公司 | Hydraulic large-angle bendable milling tool |
| CN114922581A (en) * | 2022-05-27 | 2022-08-19 | 重庆科技学院 | Underground casing continuous hole forming device and working method thereof |
| CN114922581B (en) * | 2022-05-27 | 2023-08-18 | 重庆科技学院 | Underground casing pipe continuous perforating device and working method thereof |
| CN117145379A (en) * | 2023-10-31 | 2023-12-01 | 长沙黑金刚实业有限公司 | Reverse circulation impactor |
| CN117145379B (en) * | 2023-10-31 | 2024-01-30 | 长沙黑金刚实业有限公司 | Reverse circulation impactor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1119499C (en) | 2003-08-27 |
| NO20006247D0 (en) | 2000-12-08 |
| EA002048B1 (en) | 2001-12-24 |
| WO1999064715A1 (en) | 1999-12-16 |
| NO20006247L (en) | 2000-12-08 |
| AU741468B2 (en) | 2001-11-29 |
| OA11626A (en) | 2004-09-09 |
| NZ508288A (en) | 2003-03-28 |
| EP1088151B1 (en) | 2003-02-12 |
| NO314855B1 (en) | 2003-06-02 |
| BR9911083A (en) | 2001-02-20 |
| EP1088151A1 (en) | 2001-04-04 |
| EA200100019A1 (en) | 2001-06-25 |
| DE69905364D1 (en) | 2003-03-20 |
| ID27015A (en) | 2001-02-22 |
| CA2334150A1 (en) | 1999-12-16 |
| AU5155099A (en) | 1999-12-30 |
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