EP2675984A1 - Instrument de centrage d'outils dans un puits de forage - Google Patents

Instrument de centrage d'outils dans un puits de forage

Info

Publication number
EP2675984A1
EP2675984A1 EP12747634.9A EP12747634A EP2675984A1 EP 2675984 A1 EP2675984 A1 EP 2675984A1 EP 12747634 A EP12747634 A EP 12747634A EP 2675984 A1 EP2675984 A1 EP 2675984A1
Authority
EP
European Patent Office
Prior art keywords
linkage
bulkhead
linkage bar
support plate
roller support
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.)
Withdrawn
Application number
EP12747634.9A
Other languages
German (de)
English (en)
Inventor
Nathan PASZEK
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.)
Scientific Drilling International Inc
Original Assignee
Scientific Drilling International 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 Scientific Drilling International Inc filed Critical Scientific Drilling International Inc
Publication of EP2675984A1 publication Critical patent/EP2675984A1/fr
Withdrawn legal-status Critical Current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
    • E21B17/1014—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well
    • E21B17/1021—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well with articulated arms or arcuate springs

Definitions

  • This disclosure relates generally to an instrument for centering wellbore tools and other tools that may be disposed in a wellbore or a cylindrical tubular member.
  • Certain centralizer devices for centering downhole tools during operations are known.
  • Some wellbore tools such as borehole televiewing equipment, require precise centering of the tool within the wellbore to provide accurate readings while such tools transverse the wellbore in the longitudinal direction.
  • a centralizer tool that is capable of substantially centering a tool or tubular member with respect to a longitudinal axis of wellbores having various diameters while the tool or tubular member is stationary or the tool or tubular member is transversing the longitudinal axis without adversely affecting the accuracy or consistency of measurements recorded by such tool.
  • a centralizer tool that is capable of being adapted to operate properly in borehole casings that include discontinuities or interrupts of varying lengths.
  • a downhole controller for aligning downhole tools includes a body extending between an upstream portion and a downstream portion. First and second springs disposed proximate the upstream and downstream portions, respectively.
  • a first collar bulkhead disposed around the upstream portion and a second collar bulkhead disposed is around the downstream portion.
  • the first collar bulkhead has a first plurality of ribs extending outwardly therefrom to define an upper recess spaced from a middle recess and the second collar bulkhead has a second plurality of ribs extending outwardly therefrom to define a bottom recess.
  • a linkage bar system includes first through third linkage bars, a roller support plate, and a roller, wherein each of the first through third linkage bars extend between first and second ends.
  • the first end of the first linkage bar is coupled to the upper recess and the second end of the first linkage bar is coupled to an upper end of the roller support plate.
  • the first end of the second linkage bar is coupled to the middle recess and the second end of the second linkage bar is coupled to a lower end of the roller support plate.
  • the first end of the third linkage bar is coupled to the bottom recess and the second end of the third linkage bar is coupled to the lower end of the roller support plate, wherein the linkage bar system is adapted to compress of at least one of the first and second springs when the roller is obstructed by an interval in a borehole.
  • a downhole controller for aligning downhole tools includes a body extending between an upstream portion and a downstream portion. First and second springs disposed proximate the upstream and downstream portions, respectively.
  • a first collar bulkhead is disposed around the upstream portion and a second collar bulkhead is disposed around the downstream portion. The first collar having a first plurality of ribs extending outwardly therefrom to define an upper recess spaced from a middle recess and the second collar having a second plurality of ribs extending outwardly therefrom to define a bottom recess.
  • a radially extendable linkage bar system disposed around the body, wherein the linkage bar system includes first through third linkage bars, a roller support plate, and a roller.
  • a coupling that is adapted to be coupled to the body, wherein the linkage bar system is adapted to compress of at least one of the first and second springs when the roller is obstructed by an interval in a borehole.
  • FIG. 1 shows an isometric view of one embodiment of centroller of the present disclosure
  • FIG. 2 illustrates a partially exploded view of the centroller of FIG. 1 ;
  • FIG. 3 shows the centroller of FIG. 2 transversing a section of a well casing having an interrupt therein.
  • body 20 extends between upstream and downstream portions 22, 24.
  • body 20 is tubular.
  • body 20 may be of any desired shape or length.
  • extension pipes and or couplings 26, 28 may be attached to body 20 as known to those of skill in the art to convey structure such as tools into a borehole.
  • Upper and lower compression springs 30, 32 are disposed around upstream and downstream portions 22, 24, respectively.
  • Collar bulkheads 34, 36 may be slidably disposed around upstream and downstream portions 22, 24.
  • the spring rate and compression length of one or both compression springs 30, 32 may be adjusted based on considerations such as the weight and orientation of centroller 10. It is contemplated that centroller 10 may be oriented in a borehole with either upstream or downstream portion 22, 24 lowered into the borehole first.
  • Ribs 40 extend outwardly from top end 42 of collar bulkhead 34 to define four upper recesses 44a that are approximately equidistantly spaced around collar bulkhead 34.
  • ribs 46 extend outwardly from bottom end 48 of collar bulkhead 34 to define four lower recesses 44b that are approximately equidistantly spaced.
  • ribs 50 extend outwardly from collar bulkhead 36 to define four recesses 52 that are approximately equidistantly spaced around collar bulkheads 36.
  • Holes 60 are provided on ribs 40, 46, and 50.
  • each recess 52 defined by ribs 40, 46, and 50 is adapted to anchor bar linkage assembly 61 that will be described hereinafter with reference to the figures.
  • bar linkage assembly 61 includes first through third linkage bars 61 a, 61b, 61c, a roller support plate 62, and two molded roller 64a, 64b.
  • Each of linkage bars 61a-61c extends from a first end 66 to a second end 68.
  • the second end 68 is characterized by two fingers 70 that define a clevis 72 therebetween.
  • Roller support plate 74 also extends from upper end 76 to lower end 78 wherein each end 76, 78 defines U-shaped slot 80 that is complementary to clevis 72 that are defined by the second end 68 of each linkage bars 61a, 61b, 61c.
  • Second end 68 of first linkage bar 61a is coupled to upper end 76 of roller support plate 74 by first pivot pin 82 and second end 68 of second linkage bar 61b is coupled to lower end 78 of second roller support plate 74b by second pivot pin. Further, second end 68 of third linkage bar 68c is coupled to lower end 78 of roller support plate 74 at the same point as second linkage bar 68b is coupled to lower end 78 of roller support plate 74 by pivot pin 82 which extend through holes 60 of ribs 40, 46, 50 .
  • Pivot pin 82 also function as axles for first and second molded rollers 84 that are disposed within the complementary U-shaped slots 80 formed between upper and lower ends of roller support plate 74 and clevis 72 of first through third linkage bars 61a-61c.
  • linkage bars 61a-61c are able to radially articulate around pivot pins 82 when a load is applied to or removed from the linkage bar assembly 61 thus increasing or reducing the radial diameter of centroller 10 depending on the amount of load applied to the springs 30, 32.
  • First end 66a of first linkage bar 61a is disposed within upper recess 44a collar bulkhead 34 and hingedly coupled thereto by pivot pin 90.
  • first end of second linkage bar 61b is disposed within and hingedly coupled to lower recess 44b of collar bulkhead 34.
  • first end of third linkage bar 61c is disposed within and hingedly coupled to recesses 52 that is defined by ribs 50 on collar bulkhead 36.
  • first through third linkage bars as described above are disposed in each of the four recesses 44a, 44b, 52 such that four linkage bar assemblies 61 form linkage bar system 91.
  • varying borehole conditions may require different designs of the linkage bar assembly 61. Therefore, in another embodiment fewer than four linkage bar assemblies may be utilized to form linkage bar system 91. In yet another embodiment more than four linkage bars may be utilized.
  • Centroller 10 is designed to be relatively easy to reconfigure because the pivot pin that forms the hinge connection between first through third linkage bars, collar bulkheads, and roller support may be easily removed and installed with the use of simple hand tools. Consequently, one or more linkage bars may be added or removed depending on the needs of any particular project for which centroller 10 is required.
  • centroller 10 is easily controlled by varying the strength of upper and lower compression springs 30, 32.
  • the weight and/or orientation of a tool to be centralized is known or readily ascertainable. Therefore, a user can readily adjust the strength of either or both of springs 30, 32 to obtain precise load-force/moment characteristics. By so doing, a user is able to orient the tool into a specific axial alignment even in situations where well deviation occurs or where there are well interrupts.
  • Centroller 10 is capable of compressing linkage bar system 91 positively in either a downhole or up-hole direction.
  • tool 92 is attached to centroller 10 to centralize attached tool 92 within a borehole that includes interrupt 94 on borehole wall 96.
  • a user aligns attached tool 92 with a longitudinal axis of centroller 10 by adjusting the spring rate of either or both compression springs 30, 32 knowing the weight of tool 92. Adjustment of the spring rate of either or both compression springs 30, 32 also causes the radial diameter of linkage bar system 91 decrease accordingly because the collar bulkheads 34, 36 are not fixedly attached to body 20.
  • centroller 10 in a situation where centroller 10 is being used to convey tool 92 in a downhole direction and one or more rollers 84 encounter an interval 94 in a borehole, compression spring 32 will be forced into spring compression until the threshold tension of centroller 10 is reached. Once the threshold tension is exceeded, one or more of pivot pin 82 will be sheared by the forces experienced by centroller 10, thereby causing linkage bar system 61 to break at one or more points. Once the linkage bar system 61 breaks, the centroller 10 is no longer able to generate a radial force to keep rollers 84 on 96 of the borehole. Further, any roller 84 that may have been obstructed by interval 94 becomes free, thereby enabling a user to retrieve centroller 10 and/or any attached tool 92.
  • centroller 10 and/or tooL 92 attached thereto are retrieved from the borehole.
  • centroller 10 practically eliminates the probability of one of the rollers of centroller 10 getting stuck in interrupt 94 and/or losing centroller 10 and/or tool 92 in the borehole.
  • the threshold tension at which pivot pins 82 shear may be selected as desired by the designer of the centroller 10 by choosing pivot pins of varying materials, sizes and/or strengths to couple the linkage bars 61a, 61b, 61 c to the roller support plates 74.
  • the length of roller support plates 74 can also be varied to suit different boreholes. Specifically, roller support plates 74 can be designed to be longer or shorter depending on casing interrupt geometry of any given borehole. In this manner, a user can ensure that at least one roller 84 is always in contact with wall 94 even where another roller 84 is passing through an interrupt.
  • centroller 10 may be constructed from conventional engineering materials used in the relevant fields and following known fabrication principles. Those of ordinary skill in the art will recognize substitutions and modifications that may be made to the above description without departing from the scope of this disclosure.

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)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

L'invention concerne une unité de commande de fond de puits pour aligner des outils de fond de puits, laquelle comprend un corps s'étendant entre une partie amont et une partie aval, l'axe longitudinal du corps coïncidant avec l'axe longitudinal du puits de forage. Des premier et second ressorts sont disposés à proximité des parties amont et aval, respectivement. Un premier bâtardeau est disposé autour de la partie amont et un second bâtardeau est disposé autour de la partie aval. Le premier bâtardeau comprend plusieurs premières nervures s'étendant vers l'extérieur afin de former un renfoncement supérieur espacé d'un renfoncement médian, et le second bâtardeau comprend plusieurs secondes nervures s'étendant vers l'extérieur afin de former un renfoncement inférieur. Un système de barres de liaison est couplé aux renfoncements supérieur, médian et inférieur autour du corps, ledit système de barres de liaison comprenant des première, seconde et troisième barres de liaison, une plaque de support de rouleau et un rouleau.
EP12747634.9A 2011-02-14 2012-02-14 Instrument de centrage d'outils dans un puits de forage Withdrawn EP2675984A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/027,020 US20120205093A1 (en) 2011-02-14 2011-02-14 Instrument for Centering Tools Within a Wellbore
PCT/US2012/024991 WO2012112504A1 (fr) 2011-02-14 2012-02-14 Instrument de centrage d'outils dans un puits de forage

Publications (1)

Publication Number Publication Date
EP2675984A1 true EP2675984A1 (fr) 2013-12-25

Family

ID=46636018

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12747634.9A Withdrawn EP2675984A1 (fr) 2011-02-14 2012-02-14 Instrument de centrage d'outils dans un puits de forage

Country Status (5)

Country Link
US (1) US20120205093A1 (fr)
EP (1) EP2675984A1 (fr)
AU (1) AU2012217882A1 (fr)
CA (1) CA2831842A1 (fr)
WO (1) WO2012112504A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130319684A1 (en) * 2012-05-31 2013-12-05 Tesco Corporation Friction reducing stabilizer
US9399894B2 (en) * 2013-03-14 2016-07-26 Premier Advanced Solution Technologies, Llc Friction reducing downhole assemblies
US9650847B2 (en) * 2013-09-26 2017-05-16 Schlumberger Technology Corporation Method and apparatus to enable toolstring to negotiate obstructions downhole
CN104329083B (zh) * 2014-11-05 2017-01-18 王少斌 一种推靠坐封装置
US20160298396A1 (en) * 2015-04-08 2016-10-13 Probe Technology Services, Inc. Constant force centralizer
US11442193B2 (en) * 2019-05-17 2022-09-13 Halliburton Energy Services, Inc. Passive arm for bi-directional well logging instrument
CN112096310B (zh) * 2020-11-09 2021-01-29 胜利油田固邦石油装备有限责任公司 一种用于石油开采的液压式套管扶正器
CN113756729B (zh) * 2021-11-01 2024-05-07 南通市华业石油机械有限公司 一种串珠式抽油杆防磨扶正器

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3068400A (en) * 1958-10-01 1962-12-11 Pgac Dev Company Method and apparatus for determining the dip of strata penetrated by a borehole
US4557327A (en) * 1983-09-12 1985-12-10 J. C. Kinley Company Roller arm centralizer
GB2178088B (en) * 1985-07-25 1988-11-09 Gearhart Tesel Ltd Improvements in downhole tools
US4811792A (en) * 1988-03-07 1989-03-14 Baker Hughes Incorporated Well tool stabilizer and method
US5785125A (en) * 1996-10-21 1998-07-28 Tiw Corporation Mechanical thru-tubing centralizer
US6920936B2 (en) * 2002-03-13 2005-07-26 Schlumberger Technology Corporation Constant force actuator
US7281578B2 (en) * 2004-06-18 2007-10-16 Schlumberger Technology Corporation Apparatus and methods for positioning in a borehole
GB2455685B (en) * 2006-11-10 2011-03-23 Rem Scient Entpr Inc Rotating fluid measurement device and method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012112504A1 *

Also Published As

Publication number Publication date
AU2012217882A1 (en) 2013-09-12
CA2831842A1 (fr) 2012-08-23
US20120205093A1 (en) 2012-08-16
WO2012112504A1 (fr) 2012-08-23

Similar Documents

Publication Publication Date Title
WO2012112504A1 (fr) Instrument de centrage d'outils dans un puits de forage
US7140432B2 (en) Dual diameter and rotating centralizer/sub and method
EP2185785B1 (fr) Dispositif et technique de mise en place d'un centreur installe sur une colonne de tubage deployable
US20160298396A1 (en) Constant force centralizer
US10156104B2 (en) Centralizer with collaborative spring force
CA2206916A1 (fr) Dispositif pour controler l'inclinaison du forage desactive par fluides
US20030145985A1 (en) Centralizer for wireline tools
US8061053B2 (en) Multiple stage mechanical drift tool
WO2010127128A2 (fr) Centreur à faible frottement
US6453998B1 (en) Progressive lock integral joint centralizer
US8281880B2 (en) Expandable tool for an earth boring system
CN110998059A (zh) 井下装置及相应方法
CN112005019A (zh) 可调提环延长件
EP3014046B1 (fr) Stabilisateur
GB2377717A (en) Polymeric cable protector
WO2016204796A1 (fr) Centreur ayant une force de ressort conjuguée
US6318462B1 (en) Downhole anti-rotation tool
AU2004249849B9 (en) Flexible drill string member
US20150129200A1 (en) Slim-line casing centralizer
US8561708B2 (en) ID centralizer
US2829441A (en) Bottom caliper support
GB2481203A (en) Reamer having supportive struts
RU2432447C1 (ru) Центратор гидромеханический
US20210025244A1 (en) Centralizer with dissolvable retaining members
NO20210599A1 (en) Centraliser

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20130819

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20150901