EP0434924A1 - Dispositif pour forer un puits adjacent ou dévié à partir d'un puits, notamment d'un puits tubé - Google Patents

Dispositif pour forer un puits adjacent ou dévié à partir d'un puits, notamment d'un puits tubé Download PDF

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Publication number
EP0434924A1
EP0434924A1 EP90120537A EP90120537A EP0434924A1 EP 0434924 A1 EP0434924 A1 EP 0434924A1 EP 90120537 A EP90120537 A EP 90120537A EP 90120537 A EP90120537 A EP 90120537A EP 0434924 A1 EP0434924 A1 EP 0434924A1
Authority
EP
European Patent Office
Prior art keywords
cutting tool
deflection
starting
wedge unit
borehole
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
Application number
EP90120537A
Other languages
German (de)
English (en)
Other versions
EP0434924B1 (fr
Inventor
Rainer Dr.-Ing. Jürgens
Dietmar Krehl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Baker Hughes Holdings LLC
Original Assignee
Baker Hughes Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Baker Hughes Inc filed Critical Baker Hughes Inc
Publication of EP0434924A1 publication Critical patent/EP0434924A1/fr
Application granted granted Critical
Publication of EP0434924B1 publication Critical patent/EP0434924B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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
    • E21B7/04—Directional drilling
    • E21B7/06—Deflecting the direction of boreholes
    • E21B7/061—Deflecting the direction of boreholes the tool shaft advancing relative to a guide, e.g. a curved tube or a whipstock

Definitions

  • the invention relates to a device for drilling a secondary or deflection bore of a particularly cased borehole in underground rock or earth formations according to the preamble of claim 1.
  • a packer When creating a conventional borehole deflection from z. B. the pipe wall of a cased borehole, a packer is first placed in the borehole, a deflecting wedge unit having a wedge surface is oriented in a certain direction and fixed to the packer via an anchor device.
  • the deflection wedge unit is conventionally fastened to a start cutting tool via a shear pin connection and introduced into the borehole with the drill string having the start cutting tool.
  • the conventionally used starting tool has a front cone oriented towards the deflection wedge unit, which cone forms a deflection guide which interacts with the deflection wedge piece at the upper end of the deflection wedge unit.
  • the start cutting tool is located after the initiation of the deflection process in an area of the borehole where its front or front cutting surfaces no longer come to rest on the front edge of the deflection wedge unit .
  • a guide element that cannot be cut such as a cone part, cannot hinder the progress of the tool.
  • the start cutting tool is located after the start cutting or milling process with its end face in the casing and is fully cutable without fear of destroying the deflection wedge unit. It is therefore not necessary to pull the strand and replace the starting cutting tool when a drilling progress corresponding to the length of the deflection guide has been reached. The associated time savings are considerable.
  • the design of the device according to the invention thus creates the prerequisite for arranging further milling tools after the leading cutting tool in order to cut out and expand the window with a drilling set, Carry out clearing work and make the deflection hole until you can continue working with a conventional drilling set.
  • the deflection wedge unit preferably comprises a deflection ramp engaging behind the starting cutting tool or the leading tool in the starting position and interacting with the deflection guide.
  • the deflection guide of the starting cutting tool is formed by a downstream, tapered tool holder area.
  • This can then be followed directly by other cutting tools, e.g. B. a milling tool with a larger cutting diameter than the cutting tool, with which the cut borehole window in the casing area is to be expanded.
  • Such a milling tool can be followed by a further broaching tool with a larger cutting diameter than the first downstream tool.
  • there is the possibility of adding further broaching tools if the broaching capacity should not be sufficient in the individual case.
  • the device according to the invention illustrated in FIGS. 1 to 3 comprises a packer 1 and a deflecting wedge unit 2 with a deflecting wedge surface 3.
  • the packer 1 and the deflecting wedge unit 2 are designed as a complete structural unit and therefore together in one borehole to be determined.
  • the deflection wedge unit 2 or the deflection wedge surface 3 should have a deflection or deflection angle of approximately 2 ° to 3 ° in the illustrated exemplary embodiment.
  • the deflecting wedge surface 3 consists of a tempered high-performance steel, so that a milling tool can be guided along this while simultaneously cutting out a casing tube window without having to fear destruction of the wedge surface.
  • the deflection wedge unit 2 is connected directly to the packer 1 and has a hydraulic passage 4 in order to place the packer 1 together with the deflection wedge unit 2 in the borehole. Otherwise, the deflecting wedge unit 2 also comprises a hydraulic line on the rear side, which is not visible in the illustration according to FIG.
  • the hose 5 is to be connected to the start cutting tool numbered 6 and thus creates a direct connection to the flushing supply, but at the same time also closes the flushing openings of the starting cutting tool 6 that are not visible in the drawing.
  • the deflection guide 9 of the leading cutting tool 6 is arranged in the form of a tapering tool holder area in the tool holder area under the downstream milling cutting tool 7, which is therefore also arranged downstream of the cutting tool 6 in the direction of drilling progress.
  • the deflecting wedge unit 2 in turn comprises the start cutting tool at its upper end facing the drill rods of the drill string, generally numbered 10 6 engaging deflection ramp 11. Not visible in detail is fixed in the region of the deflection ramp 11 of the starting cutting tool 6 via a shear pin connection for setting and positioning the device on the deflection wedge unit 2 and thus also on the packer 1.
  • the deflection ramp 11 in turn has a deflection wedge surface 13 against which the lower region of the deflection guide 9 rests at the start of a deflection or window cutting process. 2, the deflection guide 9 projects beyond the wedge surface 13 of the deflection ramp 11, so that the starting cutting tool 6 can be deflected away from the longitudinal axis of the borehole via the deflection guide 9 and the deflection wedge surface 13 of the deflection ramp 11 without first to come into contact with the deflecting wedge surface 3 of the deflecting wedge unit 2.
  • the milling cutting tool 7 immediately downstream of the starting cutting tool 6 in the direction of the drilling progress has an outer cutting diameter which is larger than the outer diameter of the starting cutting tool 6, but does not yet correspond to the diameter of the deflection bore to be created.
  • a cut window is to be expanded with the milling cutter tool 7.
  • Above the milling cutter 14 of the first subordinate cutting tool 7, the latter is so flexible via a constriction 15 that it can be deflected to a certain extent, so that material loads due to bending moments that occur during deflection can be kept low.
  • the tool 7 is followed by a further tool 7.2, which is also equipped with a milling cutter 16.
  • the tool 7.2 also includes a constriction 17 and is therefore also flexible in order to reduce the material loads that occur.
  • the milling cutter 16 of the tool 7.2 has an outer cutting diameter which corresponds essentially to the diameter of the finished deflection bore to be produced and thus forms a broaching tool. Additional cutting tools or milling cutters can be connected between the broaching tool 7.2 and the strand 10, if in the respective individual case the existing clearing capacity should not be sufficient.
  • the packer / deflecting wedge complete unit together with the tools 6, 7, 7.2 are to be mounted on the derrick, wherein the deflecting wedge unit 2 and milling cutters 6, 7, 7.2 are to be aligned .
  • Packer 1, deflection wedge unit 2 and milling tools 6, 7, 7.2 are then lowered into the borehole. Once the desired depth has been reached, the deflection wedge unit 2 is to be aligned using special tools and the packer 1 is set by means of overpressure via the hydraulic passages 4 of the deflection wedge unit 2.
  • the connecting bolts between the starting cutting tool 6 and the deflection unit 2 are then to be sheared off, after which the device is ready for the deflection or window cutting process to be carried out.
  • the cutting tool unit is put into operation, with the starting cutting tool 6 first cutting a window in the borehole wall when the deflection guide 9 moves downward along the deflection wedge surface 13 of the deflection ramp 11 before it comes into contact with the deflection wedge surface 3 of the deflection wedge unit 2 as part of a further downward movement ( 3A). This ensures that the deflecting wedge unit 2 is not damaged in its upper region via the starting cutting tool 6, but that the starting cutting tool 6 can be used for the window cutting process.
  • the downstream cutting tool 7 first mills away the deflection ramp 11 in some areas, but in doing so also expands the window in the borehole wall cut by the starting cutting tool 6 (FIG. 3B).
  • the cutting tool 6, which now rests on the deflecting wedge surface 3 of the deflecting wedge unit 2 takes over the guidance and can safely slide along the deflecting wedge surface 3, which is made of tempered high-performance steel, without causing damage.
  • the start cutting tool After further drilling progress, the start cutting tool has 6 the casing wall directly below its center, which is noticeable by a reduced torque with decreasing drilling progress.
  • the load is therefore expediently initially increased further in order to bring the starting cutting tool 6 out of this position.
  • the window area is to be expanded and cleared with the milling cutter 16 or the further downstream cutting tool 7.2, the starting cutting tool 6 drilling further into the formation until it is ensured that that the milling tool 7.2 has completely passed through the drilling wall area.
  • the drill string can be exchanged for a standard drill set.

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)
EP90120537A 1989-12-22 1990-10-26 Dispositif pour forer un puits adjacent ou dévié à partir d'un puits, notamment d'un puits tubé Expired - Lifetime EP0434924B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3942438 1989-12-22
DE3942438A DE3942438A1 (de) 1989-12-22 1989-12-22 Vorrichtung zum bohren einer neben- oder ablenkbohrung eines insbesondere verrohrten bohrlochs

Publications (2)

Publication Number Publication Date
EP0434924A1 true EP0434924A1 (fr) 1991-07-03
EP0434924B1 EP0434924B1 (fr) 1993-09-22

Family

ID=6396110

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90120537A Expired - Lifetime EP0434924B1 (fr) 1989-12-22 1990-10-26 Dispositif pour forer un puits adjacent ou dévié à partir d'un puits, notamment d'un puits tubé

Country Status (5)

Country Link
US (1) US5109924A (fr)
EP (1) EP0434924B1 (fr)
CA (1) CA2033048A1 (fr)
DE (1) DE3942438A1 (fr)
NO (1) NO905506L (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994006996A1 (fr) * 1992-09-16 1994-03-31 Weatherford U.S., Inc. Ensemble sifflet deviateur
WO1994009243A2 (fr) * 1992-10-19 1994-04-28 Baker Hughes Incorporated Systeme a deviateur recuperable
GB2246585B (en) * 1990-07-31 1995-03-22 Masx Energy Services Group Inc Hydraulically set anchor for well tools
WO2008104005A2 (fr) * 2007-02-23 2008-08-28 Baker Hughes Incorporated Ensemble de fraisage de fenêtre de tubage

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US5318132A (en) * 1992-10-28 1994-06-07 Marathon Oil Company Retrievable whipstock/packer assembly and method of use
US5335737A (en) * 1992-11-19 1994-08-09 Smith International, Inc. Retrievable whipstock
US5462120A (en) 1993-01-04 1995-10-31 S-Cal Research Corp. Downhole equipment, tools and assembly procedures for the drilling, tie-in and completion of vertical cased oil wells connected to liner-equipped multiple drainholes
US5287921A (en) * 1993-01-11 1994-02-22 Blount Curtis G Method and apparatus for setting a whipstock
US5452759A (en) * 1993-09-10 1995-09-26 Weatherford U.S., Inc. Whipstock system
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US5346017A (en) * 1993-09-27 1994-09-13 Atlantic Richfield Company Method and apparatus for setting a whipstock
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RU2661925C1 (ru) * 2017-07-27 2018-07-23 Федеральное государственное бюджетное учреждение науки Институт машиноведения им. А.А. Благонравова Российской академии наук (ИМАШ РАН) Устройство для установки обсадных фильтров в глубоких перфорационных каналах-волноводах
CN108397137A (zh) * 2018-03-01 2018-08-14 中国海洋石油集团有限公司 一种造斜工具及其制造方法
US11162315B2 (en) 2020-03-25 2021-11-02 Baker Hughes Oilfield Operations Llc Window mill and whipstock connector for a resource exploration and recovery system
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US11162314B2 (en) 2020-03-25 2021-11-02 Baker Hughes Oilfield Operations Llc Casing exit anchor with redundant activation system
US11753892B2 (en) * 2021-10-22 2023-09-12 Baker Hughes Oilfield Operations Llc Electrically activated downhole anchor system
US11725482B2 (en) 2021-10-22 2023-08-15 Baker Hughes Oilfield Operations Llc Electrically actuated tubular cleaning system
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GB2246585B (en) * 1990-07-31 1995-03-22 Masx Energy Services Group Inc Hydraulically set anchor for well tools
WO1994006996A1 (fr) * 1992-09-16 1994-03-31 Weatherford U.S., Inc. Ensemble sifflet deviateur
US5341873A (en) * 1992-09-16 1994-08-30 Weatherford U.S., Inc. Method and apparatus for deviated drilling
WO1994009243A2 (fr) * 1992-10-19 1994-04-28 Baker Hughes Incorporated Systeme a deviateur recuperable
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US5474126A (en) * 1992-10-19 1995-12-12 Baker Hughes Incorporated Retrievable whipstock system
WO2008104005A2 (fr) * 2007-02-23 2008-08-28 Baker Hughes Incorporated Ensemble de fraisage de fenêtre de tubage
WO2008104005A3 (fr) * 2007-02-23 2008-12-24 Baker Hughes Inc Ensemble de fraisage de fenêtre de tubage

Also Published As

Publication number Publication date
NO905506D0 (no) 1990-12-20
US5109924A (en) 1992-05-05
EP0434924B1 (fr) 1993-09-22
DE3942438C2 (fr) 1992-01-30
NO905506L (no) 1991-06-24
CA2033048A1 (fr) 1991-06-23
DE3942438A1 (de) 1991-07-11

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