EP0799363A1 - Systeme de forage orientable a moteur de fond de puits - Google Patents

Systeme de forage orientable a moteur de fond de puits

Info

Publication number
EP0799363A1
EP0799363A1 EP95943229A EP95943229A EP0799363A1 EP 0799363 A1 EP0799363 A1 EP 0799363A1 EP 95943229 A EP95943229 A EP 95943229A EP 95943229 A EP95943229 A EP 95943229A EP 0799363 A1 EP0799363 A1 EP 0799363A1
Authority
EP
European Patent Office
Prior art keywords
borehole
drilling
drill string
motor
motor housing
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
EP95943229A
Other languages
German (de)
English (en)
Other versions
EP0799363B1 (fr
Inventor
Alban Michel Faure
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.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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 Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Priority to EP95943229A priority Critical patent/EP0799363B1/fr
Publication of EP0799363A1 publication Critical patent/EP0799363A1/fr
Application granted granted Critical
Publication of EP0799363B1 publication Critical patent/EP0799363B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • E21B7/06—Deflecting the direction of boreholes
    • E21B7/068—Deflecting the direction of boreholes drilled by a down-hole drilling motor

Definitions

  • the present invention relates to a method and a system for creating a borehole in an earth formation. More specifically the invention relates to drilling of boreholes whereby a drilling assembly is applied which allows steering of a drill bit to a desired subsurface target area.
  • a typical application in which there is a need for such steering of the drill bit is, for example, in offshore drilling whereby a plurality of deviated wellbores are drilled from an offshore platform to multiple locations of a hydrocarbon containing zone in an earth formation.
  • Other applications in which there is a need for steerable drilling include drilling of horizontal or highly inclined wellbores into such a hydrocarbon containing zone.
  • EP-571045-A1 discloses a method of creating a borehole in an earth formation using a drilling assembly comprising a drill string extending into the borehole, a downhole motor including a housing and a drive shaft for rotating a drill bit, which drive shaft has an inclined orientation relative to a longitudinal axis of the lower part of the drill string, the motor housing being connected to the lower part of the drill string in a manner so as to allow rotation of the motor housing about said longitudinal axis, the drilling assembly further comprising control means to control rotation of the motor housing about said longitudinal axis and relative to the drill string.
  • a downhole motor having a housing with an adjustable bend is applied, whereby during straight drilling the bend is adjusted so that the bend angle is zero, and during curved drilling the bend is adjusted so that the bend angle corresponds to the desired borehole curvature.
  • the motor housing Prior to drilling a curved borehole section the motor housing is rotated relative to the drill string about a selected number of incremental angular steps so as to orient the motor housing in the desired azimuthal direction.
  • FIG. 1 shows schematically a lower part of a drilling assembly as used in the method according to the invention.
  • the drilling assembly shown in Fig. 1 extends into a borehole 1 formed in an earth formation 3.
  • the assembly of which only the lower part is shown in Fig. 1, includes a drill string in the form of a tubing 5 of relatively small diameter, for example a diameter of about 50 mm.
  • tubing 5 Before being lowered into the borehole 1 the tubing 5 is stored in the form of a coil on a reel (not shown) located at surface. As drilling progresses the tubing 5 is unreeled from the reel and gradually lowered into the borehole 1.
  • the tubing 5 is therefore also referred to as “coiled tubing", and drilling with such coiled tubing is also referred to as “coiled tubing drilling”.
  • a downhole drilling motor 6 having a housing 7 is located at the lower end of the drilling assembly, which motor 6 drives a drive shaft 8 provided with a drill bit 9 which cuts into the rock at the borehole bottom 11 during drilling.
  • the downhole motor 6 forms a hydraulic motor of the Moineau type which is well-known in the art of steerable drilling.
  • the drive shaft 8 and the drill bit 9 are arranged inclined relative to the motor housing 7, so that a longitudinal axis 13 of the lower end part of the coiled tubing 5 is oriented at angle 15 relative to a longitudinal axis 17 of the drive shaft 8.
  • the longitudinal axes 13 and 17 have a point of intersection 19 located below the motor housing 7.
  • the housing 7 of the downhole motor 6 is provided with a number of stabiliser blades 21 to stabilise and centralise the lower part of the drilling assembly in the borehole 1.
  • the downhole motor 6 is connected to the coiled tubing 5 via an electric motor 23 having a housing 25 and an output shaft 27, the upper end of the housing 25 being fixedly connected to the lower end of the coiled tubing 5, and the lower end of the output shaft 27 being fixedly connected to the upper end of the housing 7 of the downhole motor 6.
  • the output shaft 27 of the electric motor 23 is rotatable about its longitudinal axis, relative to the housing 25 of the electric motor 23. When the electric motor 23 is operated the output shaft 27 rotates about its longitudinal axis, relative to the housing 25.
  • a bore (not shown) extends through the interior of the electric motor 23, which bore provides a fluid flow path between the interior of the coiled tubing and the fluid inlet of the downhole motor 6.
  • a substantially straight borehole section is drilled as follows. Drilling fluid is pumped through the coiled tubing 5 and through the bore of the electric motor 23 to the fluid inlet of the downhole motor 6. Thereby the downhole motor 6 is operated to drive the drive shaft 8 and the drill bit 9. Simultaneously with operating the downhole motor 23, the control system at surface induces the power supply to provide electric power to the electric motor 23, so that the output shaft 27 of the electric motor 23 is rotated continuously at a controlled speed and thereby the housing of the downhole motor 6 is rotated at the same controlled speed. The drill bit 9 consequently rotates in the borehole 1 about both axes 13 and 17.
  • the control system at surface induces the power supply to operate the electric motor 23 so as to rotate the output shaft 27 about a selected angle corresponding to a selected orientation of the housing 7 of the downhole motor 6 in the borehole 1, which orientation of the motor housing 7 determines the direction in which drilling of a curved borehole section proceeds.
  • the orientation indicator is induced to provide an indication of the angular orientation of the output shaft 27 to an operator at surface.
  • the electric motor 23 is stopped, and the downhole motor 6 is operated so as to rotate the drive shaft 8 and the drill bit 9 by pumping drilling fluid through the coiled tubing 5 and through the bore of the electric motor 23 to the fluid inlet of the downhole motor 6.
  • drilling proceeds with the housing 7 of the downhole motor 6 stationary while the drill bit 9 rotates. Since the drill bit 9 is inclined relative to the longitudinal axis 13 of the lower part of the drilling assembly, the borehole 1 is deepened in the direction of inclination of the drill bit 9 so that a curved borehole section is drilled.
  • the electric motor 23 is operated again so as to simultaneously rotate the motor housing 7 continuously and to operate the downhole motor 6 so as to rotate the drill bit 9.
  • the drilling operator may repeat the above procedure for alternatingly drilling straight and curved borehole sections.
  • the coiled tubing will twist due to reaction moments acting on the coiled tubing, the degree of twist being dependent on various factors, such as the diameter and wall-thickness of the coiled tubing, the weight-on-bit, the pressure of the fluid driving the downhole motor, or the magnitude of friction forces between the coiled tubing and the borehole-wall.
  • the motor can alternatively be oriented by varying the twist angle of the coiled tubing, for example by adjusting the weight- on-bit or by adjusting the pressure of the drilling fluid which drives the downhole motor, or by a combined operation of the electric motor and a variation of the twist angle.
  • control means does not include means for controlling rotation of the motor housing about said longitudinal axis and relative to the drill string, which rotation is caused by reactive torque forces exerted to the motor housing due to the reactive torque action of the rotating drill bit in the borehole.

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)
  • Drilling And Boring (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

Procédé permettant de produire un puits de forage dans une formation terrestre au moyen d'un ensemble de forage comprenant une garniture de forage (5) s'étendant dans le puits et un moteur de fond de puits (6) doté d'un carter (7) et d'un arbre d'entraînement (8) mettant en rotation le trépan de forage (9), ledit arbre d'entraînement étant incliné par rapport à l'axe longitudinal de la partie inférieure de la garniture de forage. Le carter du moteur est accouplé à la partie inférieure de la garniture de forage de sorte qu'il puisse tourner autour dudit axe longitudinal. L'ensemble de forage comprend en outre un moyen de commande (23) destiné à commander la rotation du carter du moteur autour dudit axe longitudinal et par rapport à la garniture de forage. Ce procédé consiste à effectuer le forage d'une partie pratiquement droite du puits par la mise en rotation, par le moteur électrique, du carter du moteur de manière continue autour dudit axe longitudinal et par rapport à la garniture de forage, tandis que le moteur de fond de puits est actionné de façon à faire tourner le trépan de forage.
EP95943229A 1994-12-21 1995-12-20 Systeme de forage orientable a moteur de fond de puits Expired - Lifetime EP0799363B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP95943229A EP0799363B1 (fr) 1994-12-21 1995-12-20 Systeme de forage orientable a moteur de fond de puits

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP94203712 1994-12-21
EP94203712 1994-12-21
EP95943229A EP0799363B1 (fr) 1994-12-21 1995-12-20 Systeme de forage orientable a moteur de fond de puits
PCT/EP1995/005163 WO1996019635A1 (fr) 1994-12-21 1995-12-20 Systeme de forage orientable a moteur de fond de puits

Publications (2)

Publication Number Publication Date
EP0799363A1 true EP0799363A1 (fr) 1997-10-08
EP0799363B1 EP0799363B1 (fr) 1999-05-06

Family

ID=8217472

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95943229A Expired - Lifetime EP0799363B1 (fr) 1994-12-21 1995-12-20 Systeme de forage orientable a moteur de fond de puits

Country Status (17)

Country Link
EP (1) EP0799363B1 (fr)
CN (1) CN1062634C (fr)
AR (1) AR004469A1 (fr)
AU (1) AU692040B2 (fr)
BR (1) BR9510493A (fr)
CA (1) CA2207923C (fr)
CO (1) CO4480786A1 (fr)
DE (1) DE69509557T2 (fr)
DK (1) DK0799363T3 (fr)
EG (1) EG20620A (fr)
MY (1) MY115387A (fr)
NO (1) NO310036B1 (fr)
OA (1) OA10429A (fr)
RU (1) RU2149248C1 (fr)
SA (1) SA95160479B1 (fr)
TN (1) TNSN95131A1 (fr)
WO (1) WO1996019635A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6635756B1 (en) 1998-06-15 2003-10-21 National Starch And Chemical Investment Holding Corporation Starch obtainable from modified plants

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5738178A (en) * 1995-11-17 1998-04-14 Baker Hughes Incorporated Method and apparatus for navigational drilling with a downhole motor employing independent drill string and bottomhole assembly rotary orientation and rotation
US6047784A (en) * 1996-02-07 2000-04-11 Schlumberger Technology Corporation Apparatus and method for directional drilling using coiled tubing
US6446737B1 (en) 1999-09-14 2002-09-10 Deep Vision Llc Apparatus and method for rotating a portion of a drill string
DE19963445A1 (de) 1999-12-28 2001-07-05 Basf Ag Verfahren zur Abtrennung von Formaldehyd aus polyolhaltigen Reaktionsgemischen unter Zusatz von Lösungsmitteln
US6419014B1 (en) 2000-07-20 2002-07-16 Schlumberger Technology Corporation Apparatus and method for orienting a downhole tool
DE602004001328T2 (de) * 2004-01-27 2007-05-10 Schlumberger Technology B.V. Unterirdisches Bohren einer Lateralbohrung
US8899352B2 (en) 2007-08-15 2014-12-02 Schlumberger Technology Corporation System and method for drilling
US8720604B2 (en) 2007-08-15 2014-05-13 Schlumberger Technology Corporation Method and system for steering a directional drilling system
US7845430B2 (en) * 2007-08-15 2010-12-07 Schlumberger Technology Corporation Compliantly coupled cutting system
US8763726B2 (en) 2007-08-15 2014-07-01 Schlumberger Technology Corporation Drill bit gauge pad control
US8066085B2 (en) 2007-08-15 2011-11-29 Schlumberger Technology Corporation Stochastic bit noise control
US8757294B2 (en) 2007-08-15 2014-06-24 Schlumberger Technology Corporation System and method for controlling a drilling system for drilling a borehole in an earth formation
US8534380B2 (en) 2007-08-15 2013-09-17 Schlumberger Technology Corporation System and method for directional drilling a borehole with a rotary drilling system
GB2454880B (en) * 2007-11-21 2012-02-15 Schlumberger Holdings Drilling system
US8151907B2 (en) 2008-04-18 2012-04-10 Shell Oil Company Dual motor systems and non-rotating sensors for use in developing wellbores in subsurface formations
WO2010045097A1 (fr) 2008-10-13 2010-04-22 Shell Oil Company Chauffage de fluide de transfert chauffé en circulation de formations d'hydrocarbure souterraines
US8510081B2 (en) * 2009-02-20 2013-08-13 Canrig Drilling Technology Ltd. Drilling scorecard
US9957755B2 (en) * 2012-12-19 2018-05-01 Halliburton Energy Services, Inc. Directional drilling using a rotating housing and a selectively offsetable drive shaft
US9347269B2 (en) * 2013-03-05 2016-05-24 National Oilwell Varco, L.P. Adjustable bend assembly for a downhole motor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3423465C1 (de) * 1984-06-26 1985-05-02 Norton Christensen, Inc., Salt Lake City, Utah Vorrichtungen zum wahlweisen Geradeaus- oder Richtungsbohren in unterirdische Gesteinsformationen
DE3839760C1 (en) * 1988-11-25 1990-01-18 Gewerkschaft Walter Ag Double rotary drilling apparatus for making directionally accurate bores, in particular horizontal bores
US5022471A (en) * 1990-01-08 1991-06-11 Maurer Engineering, Inc. Deviated wellbore drilling system and apparatus
GB9210846D0 (en) * 1992-05-21 1992-07-08 Baroid Technology Inc Drill bit steering

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9619635A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6635756B1 (en) 1998-06-15 2003-10-21 National Starch And Chemical Investment Holding Corporation Starch obtainable from modified plants
US7534931B2 (en) 1998-06-15 2009-05-19 Brunob Ii B.V. Method for producing modified starch

Also Published As

Publication number Publication date
AU692040B2 (en) 1998-05-28
NO972878L (no) 1997-06-20
NO310036B1 (no) 2001-05-07
CA2207923C (fr) 2006-05-16
BR9510493A (pt) 1998-01-13
EG20620A (en) 1999-09-30
DE69509557T2 (de) 1999-11-04
CO4480786A1 (es) 1997-07-09
WO1996019635A1 (fr) 1996-06-27
MY115387A (en) 2003-05-31
CN1171142A (zh) 1998-01-21
OA10429A (en) 2002-03-21
RU2149248C1 (ru) 2000-05-20
CA2207923A1 (fr) 1996-06-27
SA95160479B1 (ar) 2005-06-14
TNSN95131A1 (fr) 1996-02-06
AR004469A1 (es) 1998-12-16
MX9704585A (es) 1997-10-31
DE69509557D1 (de) 1999-06-10
AU4435796A (en) 1996-07-10
NO972878D0 (no) 1997-06-20
CN1062634C (zh) 2001-02-28
EP0799363B1 (fr) 1999-05-06
DK0799363T3 (da) 1999-11-15

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