[go: up one dir, main page]

WO2013090971A1 - Centreur de fond de trou - Google Patents

Centreur de fond de trou Download PDF

Info

Publication number
WO2013090971A1
WO2013090971A1 PCT/AU2011/001683 AU2011001683W WO2013090971A1 WO 2013090971 A1 WO2013090971 A1 WO 2013090971A1 AU 2011001683 W AU2011001683 W AU 2011001683W WO 2013090971 A1 WO2013090971 A1 WO 2013090971A1
Authority
WO
WIPO (PCT)
Prior art keywords
end ring
downhole
tubular body
projection
aperture
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.)
Ceased
Application number
PCT/AU2011/001683
Other languages
English (en)
Inventor
Peter Brendon Thomas Pezet
Aaron Begley
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.)
Matrix Composites and Engineering Ltd
Original Assignee
Matrix Composites and Engineering Ltd
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 Matrix Composites and Engineering Ltd filed Critical Matrix Composites and Engineering Ltd
Priority to RU2014128253/03A priority Critical patent/RU2573656C1/ru
Priority to PCT/AU2011/001683 priority patent/WO2013090971A1/fr
Publication of WO2013090971A1 publication Critical patent/WO2013090971A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • 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
    • 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
    • E21B17/1042—Elastomer protector or centering means
    • 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
    • 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

Definitions

  • the present invention relates to a downhole centraliser.
  • the present invention provides a downhole centraliser which is composed entirely of plastics material and therefore avoids problems of galvanic interaction encountered with some prior art centralisers.
  • a downhole centraliser arranged to receive a downhole tubular comprising a tubular body having opposed ends and being formed of plastics material, and at least one end ring mounted to an end of the tubular body, the or each end ring also being formed of a plastics material and having a Youngs modulus no greater than that of the tubular body.
  • a respective end ring is mounted to each of the opposed ends of the tubular body.
  • the tubular body of the centraliser of the present invention is preferably formed of plastics materials such as thermoplastic compounds, fibre reinforced thermoplastic, thermoset plastic, fibre reinforced thermoset plastic.
  • the or each end ring is preferably formed of the same plastics material.
  • the or each each end ring may fit into the tubular body by means of an interference fit. However, means may be provided for positively engaging the or each end ring with the tubular body.
  • the or each end ring may have an inner face that is formed with a plurality of inwardly extending projections.
  • the inwardly extending projections are arranged in use to bear on a tubular member about which the centraliser is mounted.
  • Figure 1 is a perspective view of a downhole centraliser in accordance with the present invention showing a first end ring installed and a second end ring spaced apart;
  • Figure 2 is a side elevation of a tubular body of the centraliser of Figure 1 ;
  • FIG. 3 is a cross-section taken along the line 3-3 of Figure 2;
  • Figure 4 is a cross-sectional view similar to Figure 3 showing first and second end rings installed;
  • Figure 5 is a perspective view of an end ring of the centraliser of Figures 1 to 4;
  • Figure 6 is a side elevation of the end ring of Figure 5;
  • Figure 7 is a plan view of the end ring of Figure 6;
  • Figure 8 is an enlarged view of part of Figure 4 sowing in detail an interconnection between an end ring and the tubular body.
  • a downhole centraliser 10 comprising a generally cylindrical tubular body 12 formed of plastics material.
  • the body 12 has an external surface 13.
  • the body 12 has a plurality of longitudinal spiral or straight blades 14 disposed on the external surface 13 thereof.
  • the blades 14 are arranged to engage in use with internal surfaces of casing members in a downhole well.
  • the body 12 is substantially rigid.
  • the blades 14 may be integrally formed with the body 12.
  • the body may be conveniently manufactured by moulding.
  • the body 12 is formed with opposed ends 16. As can be seen in Figure 3 each end 16 of the body 12 is provided with a relatively thin wall section 17 arranged to receive an end ring 18 to be described.
  • each end 16 of the body 12 is provided with an end ring 18 formed of plastics material.
  • each end ring 18 comprises an annular member 20 having a generally smooth outer surface which is arranged to engage with an inner surface of the wall section 17 of an end 16.
  • the inner surface of the body 12 at the inner end of each wall section 17 provides a seat 19 arranged to engage with an annular member 20.
  • the body 12 and each end ring 18 are formed from the same plastics material.
  • the plastics material of each end ring 18 has a Youngs modulus no greater than that of the tubular body 12.
  • each end ring 18 has an outer annular portion 22 of larger external dimension than the annular member 20.
  • the annular portion 22 is arranged to engage with an outer end of a wall section 17 of the tubular body 12 in use.
  • each end of the tubular body 12 is provided with at least one aperture 24 which is arranged to engage with a corresponding projection 26 on the annular member 20 of a respective end ring 18.
  • a plurality of apertures 24 equiangularly spaced with corresponding projections 26.
  • FIG. 8 A preferred arrangement of a projection 26 engaging with an aperture 24 is shown in Figure 8. It can be seen that the projection 26 has a tapered lower end 26a which becomes progressively smaller downwardly until it merges with the annular member 20.
  • the project 26 shown in Figure 8 has an angular upper end 26b which is disposed substantially at right angles to the annular member 20. In this way the end ring 18 may be readily engaged with an end 16 of the tubular body 12 but is more difficult to remove such that the risk of inadvertent dislodgement of the end ring 18 is reduced.
  • each annular member 20 has a small degree of resilience enabling it to be urged inwardly upon engagement with the tubular body 12 until a projection 26 reaches an aperture 24 at which point the annular member 20 springs outwardly so that the projection 26 and an aperture 24 interengage with one another. In this way the end ring 18 is more securely and positively engaged with the body 12 compared to relying on an interference fit alone.
  • each end ring has an inner face 28 which may be provided with a plurality of inwardly extending projections 30.
  • the projections 30 preferably are generally flat but have curved inner surfaces 32.
  • the projections 30 are arranged to bear on, in use, a tubular about which the centraliser 10 is mounted.
  • the tubular body 12 is provided with alignment and anti-rotation means in the form of a plurality of equiangularly spaced longitudinal ribs 34 provided on an internal surface adjacent each end 16 and corresponding slots 36 in an outer face of the annular member 20 of each end ring 18.
  • At least one centraliser 10 is mounted about each length of the tubular member before the tubular member is lowered into the casing of the well being drilled.
  • the centralisers 10 are arranged to be rotatably mounted on the drill string and to be freely slidable therealong between set points.
  • the blades 14 are arranged to engage with the casing of the well so that the tubular members are laterally constrained within the casing by engagement of the centraliser 10 with the casing on the one hand and the tubular members on the other hand.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)

Abstract

L'invention porte sur un centreur de fond de trou (10), lequel centreur est agencé de façon à recevoir des tubulaires de fond de trou, et a un corps tubulaire (12) avec des extrémités opposées (16), et est formé en matière plastique. Une bague d'extrémité respective (18) est montée dans la ou dans chaque extrémité opposée, et est formée en une matière plastique ayant un module de Young qui n'est pas supérieur à celui du corps tubulaire (12).
PCT/AU2011/001683 2011-12-23 2011-12-23 Centreur de fond de trou Ceased WO2013090971A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
RU2014128253/03A RU2573656C1 (ru) 2011-12-23 2011-12-23 Скважинный центратор
PCT/AU2011/001683 WO2013090971A1 (fr) 2011-12-23 2011-12-23 Centreur de fond de trou

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/AU2011/001683 WO2013090971A1 (fr) 2011-12-23 2011-12-23 Centreur de fond de trou

Publications (1)

Publication Number Publication Date
WO2013090971A1 true WO2013090971A1 (fr) 2013-06-27

Family

ID=48667478

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2011/001683 Ceased WO2013090971A1 (fr) 2011-12-23 2011-12-23 Centreur de fond de trou

Country Status (2)

Country Link
RU (1) RU2573656C1 (fr)
WO (1) WO2013090971A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9217301B1 (en) * 2012-03-06 2015-12-22 B.O.N.D. Enterprises, Llc Attachable collar for down hole apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003106811A1 (fr) * 2002-06-18 2003-12-24 Baker Hughes Incorporated Element de centrage expansible destine a des elements tubulaires de fond
US20080210419A1 (en) * 2005-01-18 2008-09-04 Downhole Products Plc Centralizer
WO2011059694A1 (fr) * 2009-11-13 2011-05-19 Wwt International, Inc. Manchon non rotatif pour trou découvert et ensemble correspondant

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2060350C1 (ru) * 1993-02-09 1996-05-20 Научно-технический центр "Нефтепромдиагностика" Центратор для насосных штанг
US5908072A (en) * 1997-05-02 1999-06-01 Frank's International, Inc. Non-metallic centralizer for casing
RU2263760C1 (ru) * 2004-11-26 2005-11-10 ОАО "Татнефть" им. В.Д. Шашина Центратор для центрирования дополнительной обсадной колонны внутри основной обсадной колонны скважины
RU79139U1 (ru) * 2008-07-29 2008-12-20 Общество с ограниченной ответственностью (ООО) "Инжиниринговая компания "ИНКОМП-НЕФТЬ" Центратор насосно-компрессорных труб
RU87451U1 (ru) * 2009-04-08 2009-10-10 Общество с ограниченной ответственностью (ООО) "Инжиниринговая компания "ИНКОМП-НЕФТЬ" Центратор насосно-компрессорных труб

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003106811A1 (fr) * 2002-06-18 2003-12-24 Baker Hughes Incorporated Element de centrage expansible destine a des elements tubulaires de fond
US20080210419A1 (en) * 2005-01-18 2008-09-04 Downhole Products Plc Centralizer
WO2011059694A1 (fr) * 2009-11-13 2011-05-19 Wwt International, Inc. Manchon non rotatif pour trou découvert et ensemble correspondant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9217301B1 (en) * 2012-03-06 2015-12-22 B.O.N.D. Enterprises, Llc Attachable collar for down hole apparatus

Also Published As

Publication number Publication date
RU2573656C1 (ru) 2016-01-27

Similar Documents

Publication Publication Date Title
CA2757349C (fr) Centreur de fond de trou
US6435275B1 (en) Casing centralizer
EP3759306B1 (fr) Outil à molettes
US20150361731A1 (en) Roller device
WO2013095887A2 (fr) Bague de coin pour attacher des centralisateurs
US8631863B2 (en) Snap mount annular debris barrier
CA2892537C (fr) Centralisateur de tubulure
US20170051563A1 (en) Centraliser
US9556687B2 (en) Multi-vane centralizer and method of forming
US10822885B2 (en) Reduced drag casing connection
CA3076856C (fr) Centreur de sonde de forage
WO2006077399A2 (fr) Centreur
AU2005202914B2 (en) Field-installable rod guide
US20160047174A1 (en) Downhole clamp system
WO2013090971A1 (fr) Centreur de fond de trou
US8662177B2 (en) Hydraulic fracture diverter apparatus and method thereof
CA2939317A1 (fr) Raccord de conduite a region de deviation de charge
US20110278020A1 (en) Shearing tool and methods of use
US11873687B2 (en) Centralizer with elongated rods
US20170306708A1 (en) A centralizer with low friction buttons and method of fabrication thereof
US20140027107A1 (en) Continuous rod centralizer

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11877714

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2014128253

Country of ref document: RU

Kind code of ref document: A

122 Ep: pct application non-entry in european phase

Ref document number: 11877714

Country of ref document: EP

Kind code of ref document: A1