GB2521963A - A centralisation system - Google Patents

A centralisation system Download PDF

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Publication number
GB2521963A
GB2521963A GB1506841.4A GB201506841A GB2521963A GB 2521963 A GB2521963 A GB 2521963A GB 201506841 A GB201506841 A GB 201506841A GB 2521963 A GB2521963 A GB 2521963A
Authority
GB
United Kingdom
Prior art keywords
main body
extending radially
hollow
centralizer
tapered
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Withdrawn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
GB1506841.4A
Other versions
GB201506841D0 (en
Inventor
Gregory Douglas Trowbridge
Geoffrey Neil Murray
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.)
TDTECH Ltd
Original Assignee
TDTECH 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 TDTECH Ltd filed Critical TDTECH Ltd
Publication of GB201506841D0 publication Critical patent/GB201506841D0/en
Publication of GB2521963A publication Critical patent/GB2521963A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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

Abstract

The present invention is directed to a tubular centralization system for completing oil, gas, geothermal and other types of wells where the temperatures may be high or the side loads are high, or both. The system is composed of a centralizer having a ring-shaped body with a plurality of wide ridges extending radially outwards from the main body, the ridges hollow along their length, and forming pockets on the inner surface, each ridge having at least one vane longitudinally aligned with the pocket and the axis of rotation, the vane or vanes extending radially inwards from the inner surface of the hollow ridge and having an inner edge aligned with a circumferential line that follows the circumference of the inner surface, a generally cylindrical stand-off band having a plurality of wide, straight ridges extending radially outwards from a portion of the outer surface, equi-spaced around the main body, the main body having a first part with the inner surface substantially parallel to the outer surface, and a second part that is tapered in profile, and a generally cylindrical stop collar for well bore holes, having a hollow main body formed from a first part that extends inwards from the first end and which has parallel walls, and a second part that extends inwards from the second end to meet the first part and which is tapered in profile, the outer surface of the second part tapering down to meet the inside surface, the taper having a first portion furthest from the second end that has a first angle between the inner surface and the outer surface, and a second portion closest to the second end with a greater angle between the first portion and the axis of rotation of the main body. The centralizer can also be ring-shaped with a plurality of elongate blades extending axially along the outer surface, each blade forming a wave form with at least two peaks and troughs along the length of the blade.
GB1506841.4A 2012-10-24 2013-10-16 A centralisation system Withdrawn GB2521963A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ60321012 2012-10-24
PCT/NZ2013/000187 WO2014065677A1 (en) 2012-10-24 2013-10-16 A centralisation system

Publications (2)

Publication Number Publication Date
GB201506841D0 GB201506841D0 (en) 2015-06-03
GB2521963A true GB2521963A (en) 2015-07-08

Family

ID=50544947

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1506841.4A Withdrawn GB2521963A (en) 2012-10-24 2013-10-16 A centralisation system

Country Status (3)

Country Link
US (1) US20150275588A1 (en)
GB (1) GB2521963A (en)
WO (1) WO2014065677A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10669788B2 (en) * 2015-01-12 2020-06-02 Schlumberger Technology Corporation Active stabilization
BR112017014465A2 (en) * 2015-02-04 2018-03-13 Halliburton Energy Services Inc system and method for monitoring fluid in a well to extract hydrocarbons.
GB2548066B (en) 2015-02-13 2020-12-09 Halliburton Energy Services Inc Downhole fluid characterization methods and systems employing a casing with a multi-electrode configuration
AU2016377419B2 (en) 2015-12-23 2022-06-30 Friction Tool Solutions Inc. Apparatus for mounting on a tubular structure
US20170292336A1 (en) * 2016-04-07 2017-10-12 Slender Force, Llc Thin bow-string centralizer for wells
US11286750B2 (en) * 2020-03-31 2022-03-29 Weatherford Technology Holdings, Llc Stop collar assembly
US20210381323A1 (en) * 2020-06-04 2021-12-09 Halliburton Energy Services, Inc. Stabilizer including modified helical wellbore stabilizing elements

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002004781A1 (en) * 2000-06-30 2002-01-17 Brunel Oilfield Services (Uk) Limited Nonconductive centralizer
US6772836B2 (en) * 2000-10-20 2004-08-10 Schlumberger Technology Corporation Expandable tubing and method
US20110114338A1 (en) * 2009-11-13 2011-05-19 Casassa Garrett C Non-rotating casing centralizer
US20120138288A1 (en) * 2010-12-06 2012-06-07 Frank's International, Inc. Rigid centralizer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4817710A (en) * 1985-06-03 1989-04-04 Halliburton Company Apparatus for absorbing shock
US5937948A (en) * 1998-01-15 1999-08-17 Robbins, Iii; George Dee Extruded casing centralizer
US20120073803A1 (en) * 2009-06-08 2012-03-29 Shantanu Dalmia Dual rotary centralizer for a borehole

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002004781A1 (en) * 2000-06-30 2002-01-17 Brunel Oilfield Services (Uk) Limited Nonconductive centralizer
US6772836B2 (en) * 2000-10-20 2004-08-10 Schlumberger Technology Corporation Expandable tubing and method
US20110114338A1 (en) * 2009-11-13 2011-05-19 Casassa Garrett C Non-rotating casing centralizer
US20120138288A1 (en) * 2010-12-06 2012-06-07 Frank's International, Inc. Rigid centralizer

Also Published As

Publication number Publication date
WO2014065677A1 (en) 2014-05-01
US20150275588A1 (en) 2015-10-01
GB201506841D0 (en) 2015-06-03

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)